SP207EET/TR [ROCHESTER]
TRIPLE LINE TRANSCEIVER, PDSO24, PLASTIC, SOIC-24;
| 型号： | SP207EET/TR |
| 厂家： | 
Rochester Electronics |
| 描述： | TRIPLE LINE TRANSCEIVER, PDSO24, PLASTIC, SOIC-24 光电二极管 |
| 文件： | 总19页 (文件大小：1040K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SP207E–SP213E
Low Power, High ESD +5V RS232 Transceivers
+5V INPUT
■ Meets All EIA-232 and ITU V.28
0.1µF
6.3V
9
Specifications
10
+
0.1µF
6.3V
C1
+
VCC
11
15
+
+
0.1µF
6.3V
V +
V –
■ Single +5V Supply Operation
12
13
0.1µF
C1
C2
–
+
■ 3mA Typical Static Supply Current
■ 4 x 0.1µF External Charge Pump Capacitors
■ Typical 230kbps Transmission Rates
■ Standard SOIC and SSOP Footprints
■ 1µA Shutdown Mode (SP211E & SP213E)
■ Two Wake-Up Receivers (SP213E)
■ Tri-State/RxEnable (SP211E & SP213E)
■ Improved ESD Specifications:
+15kV Human Body Model
16V
+
0.1µF
16V
SP207E
400KOHM
400KOHM
400KOHM
400KOHM
400KOHM
14
C2
–
7
6
2
T1
T2
T3
T4
T5
T1 IN
T1 OUT
T2 OUT
T3 OUT
3
T2 IN
T3 IN
T4 IN
T5 IN
1
18
19
21
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
24
20
T
T
4 OUT
5 OUT
Now Available in Lead Free Packaging
5
22
17
4
R1
R
1 OUT
R1 IN
R2 IN
R3 IN
Device
Drivers Receivers Pins
SP207E
SP208E
SP211E
SP213E
5
4
4
4
3
4
5
5
24
24
28
28
5KOHM
5KOHM
5KOHM
23
16
R2
R3
R2 OUT
R3 OUT
Table 1. Model Selection Table
8
GND
DESCRIPTION
The SP207E-SP213E are enhanced transceivers intended for use in RS-232 and V.28 serial
communication. Thesedevicesfeatureverylowpowerconsumptionandsingle-supplyoperation
making them ideal for space-constrained applications. Sipex-patented (5,306,954) on-board
charge pump circuitry generates fully compliant RS-232 voltage levels using small and inexpen-
sive 0.1µF charge pump capacitors. External +12V and -12V supplies are not required. The
SP211E and SP213E feature a low-power shutdown mode, which reduces power supply drain
to1µA. SP213Eincludestworeceiversthatremainactiveduringshutdowntomonitorforsignalactivity.
The SP207E-SP213E devices are pin-to-pin compatible with our previous SP207, SP208,
SP211 and SP213 as well as industry-standard competitor devices. Driver output and receiver
input pins are protected against ESD to over ±15kV for both Human Body Model and IEC1000-
4-2AirDischargetestmethods. Dataratesofover120kbpsareguaranteedwith230kbpstypical,
making them compatible with high speed modems and PC remote-access applications.
Receivers also incorporate hysteresis for clean reception of slow moving signals.
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
Power Dissipation Per Package
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional
operation of the device at these or any other
above those indicated in the operation sections
of the specifications below is not implied. Exposure
to absolute maximum rating conditions for extended
periods of time may affect reliability.
24-pin SSOP (derate 11.2mW/oC above +70oC)....900mW
24-pin PDIP (derate 15.9mW/oC above +70oC)....1300mW
24-pin SOIC (derate 12.5mW/oC above +70oC)...1000mW
28-pin SSOP (derate 11.2mW/oC above +70oC)....900mW
28-pin SOIC (derate 12.7mW/oC above +70oC)...1000mW
VCC .................................................................. +6V
V+ ....................................... (VCC – 0.3V) to +13.2V
V– ................................................................ 13.2V
Input Voltages
TIN .......................................... –0.3V to (VCC +0.3V)
RIN ................................................................ ±20V
Output Voltages
TOUT ................................ (V+, +0.3V) to (V–, –0.3V)
ROUT ....................................... –0.3V to (VCC +0.3V)
Short Circuit Duration on TOUT .............. Continuous
SPECIFICATIONS
.
VCC at nominal ratings; 0.1µF charge pump capacitors; TMIN to TMAX, unless otherwise noted.
PARAMETER
MIN.
TYP.
MAX.
UNIT
CONDITIONS
TIN, EN, SD
TTL INPUTS
Logic Threshold
VIL
VIH
0.8
Volts
Volts
µA
2.0
Logic Pullup Current
Maximum Transmssion Rate
15
230
200
TIN = 0V
CL = 1000pF, RL = 3KΩ
120
kbps
TTL OUTPUTS
Compatibility
VOL
TTL/CMOS
0.05
0.4
Volts
Volts
µA
IOUT = 3.2mA; VCC = +5V
IOUT = –1.0mA
0V ≤ ROUT ≤ VCC ; SP211 EN = 0V;
VOH
3.5
Leakage Current
+10
SP213 EN = VCC
TA = +25°C
RS232 OUTPUT
Output Voltage Swing
+5
+7
Volts
All transmitter outputs loaded
with 3KΩ to ground
Output Resistance
300
Ω
VCC = 0V; VOUT = +2V
Output Short Circuit Current
+25
mA
Infinite duration, VOUT = 0V
RS232 INPUT
Voltage Range
Voltage Threshold
Low
High
Hysteresis
Resistance
–15
0.8
+15
Volts
1.2
1.7
0.5
5
Volts
Volts
Volts
kΩ
VCC = 5V, TA = +25°C
VCC = 5V, TA = +25°C
VCC = +5V
2.8
1.0
7
0.2
3
VIN =+15V; TA = +25°C
DYNAMIC CHARACTERISTICS
Driver Propagation Delay
Receiver Propagation Delay
Instantaneous Slew Rate
1.5
0.5
µs
µs
V/µs
TTL–to–RS-232
RS-232–to–TTL
1.5
30
CL = 50pF, RL = 3–7KΩ;
TA = +25°C; from +3V
CL = 2,500pF, RL = 3KΩ;
measured from +3V to –3V
or –3V to +3V
Transition Time
1.5
µs
Output Enable Time
Output Disable Time
400
250
ns
ns
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
2
SPECIFICATIONS
VCC at nominal ratings; 0.1µF charge pump capacitors; TMIN to TMAX, unless otherwise noted.
PARAMETER
MIN.
TYP.
MAX.
UNIT
CONDITIONS
POWER REQUIREMENTS
VCC
SP207
All other parts
ICC
4.75
4.50
5.00
5.00
5.25
5.50
Volts
Volts
TA = +25°C
3
15
1
6
mA
mA
µA
No load; VCC = ±10%
All transmitters RL = 3KΩ
TA = +25°C
Shutdown Current
10
ENVIRONMENTAL AND MECHANICAL
Operating Temperature
Commercial, –C
Extended, –E
Storage Temperature
0
–40
–65
+70
+85
+125
°C
°C
°C
Package
–A
Shrink (SSOP) small outline
Wide (SOIC) small outline
–T
–P
Narrow (PDIP) Plastic Dual-In-Line
Transmitter Output @ 120kbps
Transmitter Output @ 120kbps
RL=3KΩ, CL=1,000pF
RL=3KΩ, CL=2,500pF
Transmitter Output @ 240kbps
Transmitter Output @ 240kbps
RL=3KΩ, CL=1,000pF
RL=3KΩ, CL=2,500pF
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
3
PINOUT
T
2 OUT
T3 OUT
R3IN
T3 OUT
T1OUT
T2OUT
R1IN
T4 OUT
R2IN
24
23
22
21
20
19
18
17
16
15
14
13
24
23
22
21
20
19
18
17
16
15
14
13
1
2
1
2
T1OUT
R2IN
R3OUT
T4IN
R2OUT
T5IN
3
3
R2OUT
T1IN
4
4
T4OUT
T3IN
R1OUT
T2IN
T5OUT
T4IN
5
5
R1OUT
R1IN
6
6
T2IN
T1IN
T3IN
7
7
GND
R4OUT
R4IN
GND
R3OUT
R3IN
8
8
VCC
VCC
9
9
+
–
+
C1
–
C1
V
V
10
11
12
10
11
12
+
–
+
–
C2
V
C2
V
–
+
–
C1
+
C2
C1
C2
T3 OUT
T
4 OUT
R3IN
R3OUT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
T3 OUT
T1OUT
T2OUT
R2IN
T
4 OUT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
T1OUT
T2OUT
R2IN
R3IN
2
3
4
5
6
7
8
9
3
R3OUT
SHUTDOWN (SD)
EN
SHUTDOWN (SD)
4
R2OUT
T2IN
EN
5
R2OUT
T2IN
R4IN
R4OUT
T4IN
6
R4IN
T1IN
7
T1IN
R4OUT
T4IN
R1OUT
R1IN
8
R1OUT
R1IN
T3IN
9
T3IN
GND
R5OUT
R5IN
10
11
12
13
14
GND
R5OUT
R5IN
10
11
12
13
14
VCC
VCC
+
+
–
–
V
C1
V
+
+
–
–
V
C1
V
–
C2
C2
–
C2
C2
+
C1
+
C1
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
4
FEATURES
Transmitter/Drivers
The SP207E, SP208E, SP211E and
SP213E multi–channel transceivers fit most
RS-232/V.28 communication needs. All of
these devices feature low–power CMOS
con-struction and SIPEX–proprietary on-
board charge pump circuitry to generate
RS-232 signal-voltages, making them ideal
forapplicationswhere+9Vand-9Vsupplies
arenotavailable. Thehighlyefficientcharge
pump is optimized to use small and
inexpensive0.1µFchargepumpcapacitors,
saving board space and reducing overall
circuit cost.
The drivers are single-ended inverting
transmitters, which accept either TTL or
CMOSinputsandoutputtheRS-232signals
with an inverted sense relative to the input
logiclevels. Shouldtheinputofthedriverbe
left open, an internal pullup to VCC forces the
input high, thus committing the output to a
logic-1 (MARK) state. The slew rate of the
transmitter output is internally limited to a
maximum of 30V/µs in order to meet the
EIA/RS-232 and ITU V.28 standards. The
transition of the output from high to low also
meets the monotonicity requirements of the
standard even when loaded. Driver output
voltage swing is ±7V (typical) with no load,
and ±5V or greater at maximum load. The
transmitter outputs are protected against
infinite short–circuits to ground without
degradation in reliability.
Each device provides a different driver/
receiver combination to match standard
application requirements. The SP207E is a
5-driver, 3-receiver device, ideal for DCE
applications such as modems, printers or
other peripherals. SP208E is a 4-driver/
4receiver device, ideal for providing hand-
shaking signals in V.35 applications or other
general-purpose serial communications.
TheSP211EandSP213Eareeach3-driver,
5-receiver devices ideal for DTE serial ports
on a PC or other data-terminal equipment.
ThedriversoftheSP211E,andSP213Ecan
be tri–stated by using the SHUTDOWN
function. In this “power-off” state the charge
pump is turned off and VCC current drops to
1µA typical. Driver output impedance will
remain greater than 300Ω, satisfying the
RS-232andV.28specifications. ForSP211E
SHUTDOWN is active when pin 25 is driven
high. For SP213E SHUTDOWN is active
when pin 25 is driven low.
The SP211 and SP213E feature a low–
powershutdownmode,whichreducespower
supply drain to 1µA. TheSP213E includes a
Wake-Upfunctionwhichkeepstworeceivers
activeintheshutdownmode,unlessdisabled
by the EN pin.
Receivers
The receivers convert RS-232 level input
signalstoinvertedTTLlevelsignals.Because
signals are often received from a
transmission line where long cables and
system interference can degrade signal
quality,theinputshaveenhancedsensitivity
to detect weakened signals. The receivers
also feature a typical hysteresis margin of
500mV for clean reception of slowly
transitioning signals in noisy conditions.
These enhancements ensure that the
receiver is virtually immune to noisy
transmission lines.
The family is available in 28 and 24 pin SO
(wide) and SSOP (shrink) small outline
packages. Devices can be specified for
commercial (0˚C to +70˚C) and industrial/
extended (–40˚C to +85˚C) operating
temperatures.
THEORY OF OPERATION
SipexRS232transceiverscontainthreebasic
circuit blocks — a) transmitter/driver,
b) receiver and c) the SIPEX–proprietary
charge pump. SP211E and SP213E also
includeSHUTDOWNandENABLEfunctions.
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
5
Receiver input thresholds are between 1.2
to 1.7 volts typical. This allows the receiver
to detect standard TTL or CMOS logic-level
signals as well as RS232 signals. If a
receiver input is left unconnected or un-
driven, a 5kΩ pulldown resistor to ground
will commit the receiver to a logic-1 output
state.
Phase 2
VSS transfer and invert: Phase two connects
thenegativeterminalofC2 totheVSS storage
capacitor and the positive terminal of C2 to
ground. This transfers the doubled and
inverted (V ) voltage onto C3. Meanwhile,
capacitor C1 charged from VCC to prepare it
for its next phase.
-
V
= +5V
CC
HIGHLY EFFICIENT CHARGE–PUMP
The onboard dual-output charge pump is
usedtogeneratepositiveandnegativesignal
voltagesfortheRS232drivers. Thisenables
fullycompliantRS232andV.28signalsfrom
a single power supply device.
C
4
+
–
+
V
V
Storage Capacitor
Storage Capacitor
DD
+
–
+
–
C
C
2
1
–
SS
The charge pumps use four external
capacitors to hold and transfer electrical
charge. The Sipex–patented design (US
Patent#5,306,954)usesauniqueapproach
compared to older, less–efficient designs.
Thepumpsuseafour–phasevoltageshifting
technique to attain symmetrical V+ and V-
power supplies. An intelligent control
oscillator regulates the operation of the
chargepumptomaintainthepropervoltages
at maximum efficiency.
C
–10V
3
Figure 2. Charge Pump — Phase 2
Phase 3
VDD charge store and double: Phase three
is identical to the first phase. The positive
terminalsofcapacitorsC1 andC2 arecharged
fromVCCwiththeirnegativeterminalsinitially
connectedtoground. Cl+isthenconnected
to ground and the stored charge from C1 is
superimposed onto C2 Since C2+ is still
connectedtoVCC thevoltagepotentialacross
capacitor C2 is now 2 x VCC.
V
= +5V
CC
C
+5V
–
4
+
–
+
V
V
Storage Capacitor
Storage Capacitor
DD
–.
+
–
+
–
C
C
2
1
–
SS
C
–5V
–5V
3
V
= +5V
CC
Figure 1. Charge Pump — Phase 1
Phase 1
C
+5V
4
VSS charge store and double: The positive
terminalsofcapacitorsC1 andC2 arecharged
fromVCCwiththeirnegativeterminalsinitially
connectedtoground. Cl+isthenconnected
to ground and the stored charge from C1– is
superimposed onto C2–. Since C2+ is still
connectedtoVCC thevoltagepotentialacross
capacitor C2 is now 2 x VCC.
+
–
+
V
V
Storage Capacitor
Storage Capacitor
DD
+
–
+
–
C
C
2
1
–
SS
C
–5V
–5V
3
Figure 3. Charge Pump — Phase 3
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
6
Phase 4
consumption. This improvement is made
possiblebytheindependentphasesequence
of the Sipex charge-pump design.
—VDD transfer—Thefourthphaseconnects
thenegativeterminalofC2 togroundandthe
positive terminal of C2 to the VDD storage
capacitor. This transfers the doubled (V+)
voltage onto C4. Meanwhile, capacitor C1 is
charged from VCC to prepare it for its next
phase.
The clock rate for the charge pump typically
operatesatgreaterthan15kHz,allowingthe
pump to run efficiently with small 0.1µF
capacitors. Efficient operation depends on
rapidly charging and discharging C1 and C2,
therefore capacitors should be mounted
closetotheICandhavelowESR(equivalent
series resistance). Low cost surface mount
ceramiccapacitors(suchasarewidelyused
for power-supply decoupling) are ideal for
use on the charge pump. However the
charge pumps are designed to be able to
function properly with a wide range of
capacitor styles and values. If polarized
capacitors are used, the positive and
negative terminals should be connected as
shown.
V
= +5V
CC
C
+
+10V
4
–
+
V
V
Storage Capacitor
Storage Capacitor
DD
+
–
+
–
C
C
2
1
–
SS
C
3
Figure 4. Charge Pump — Phase 4
The Sipex charge-pump generates V+ and
-
V independently from VCC. Hence in a no–
Voltagepotentialacrossanyofthecapacitors
will never exceed 2 x VCC. Therefore
capacitors with working voltages as low as
10V rating may be used with a nominal VCC
supply. C1 will never see a potential greater
than VCC , so a working voltage of 6.3V is
adequate. The reference terminal of the VDD
capacitor may be connected either to VCC or
ground,butifconnectedtogroundaminimum
16V working voltage is required. Higher
workingvoltagesand/orcapacitancevalues
may be advised if operating at higher VCC or
to provide greater stability as the capacitors
age.
-
loadconditionV+andV willbesymmetrical.
Older charge pump approaches generate
V+andthenusepartofthatstoredchargeto
generate V . Because of inherent losses,
the magnitude of V will be smaller than V+
-
-
on these older designs.
Underlightlyloadedconditionstheintelligent
pump oscillator maximizes efficiency by
running only as needed to maintain V+ and
-
V . Sinceinterfacetransceiversoftenspend
muchoftheirtimeatidle,thispower-efficient
innovation can greatly reduce total power
+10V
a) C2+
Figure5: typicalwaveformsseenon
capacitor C2 when all drivers are at
maximum load.
GND
GND
b) C2–
–10V
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
7
SHUTDOWN MODE
SP211Eand SP213E feature a control input
which will shut down the device and reduce
the power supply current to less than 10µA,
making the parts ideal for battery–powered
systems. Inshutdownmodethetransmitters
Allreceiversthatareactiveduringshutdown
maintain 500mV (typ.) of hysteresis. All
receivers on the SP213E may be put into tri-
state using the ENABLE pin.
+
SHUTDOWN CONDITIONS
will be tri–stated, the V output of the charge
–
For complete shutdown to occur and the
10µApowerdraintoberealized,thefollowing
conditions must be met:
pumpwilldischargetoVCC,andtheV output
will discharge to ground. Shutdown will tri-
state all receiver outputs of the SP211E.
SP211E:
SP213E WAKEUP FUNCTION
• +5V must be applied to the SD pin
• ENABLE must be either Ground, +5.0V or
not connected
• the transmitter inputs must be either +5.0V
or not connected
• VCC must be +5V
• Receiver inputs must be greater than
Ground and less than +5V
On the SP213E, shutdown will tri-state
receivers 1-3. Receivers 4 and 5 remain
active to provide a “wake-up” function and
may be used to monitor handshaking and
control inputs for activity. With only two
receivers active during shutdown, the
SP213E draws only 5–10µA of supply
current.
SP213E:
A typical application of this function would
be where a modem is interfaced to a com-
puter in a power–down mode. The ring indi-
catorsignalfromthemodemcouldbepassed
through an active receiver in the SP213E
that is itself in the shutdown mode. The ring
indicator signal would propagate through
the SP213E to the power management cir-
cuitryofthecomputertopowerupthemicro-
processorandtheSP213Edrivers. Afterthe
supplyvoltagetotheSP213Ereaches+5.0V,
theSHUTDOWNpincanbedisabled,taking
the SP213E out of the shutdown mode.
• Zero Volts must be applied to the SD pin
• ENABLE must be either Ground, +5.0V or
not connected
•Thetransmitterinputsmustbeeither+5.0V
or not connected
• VCC must be +5V
• Receiver inputs must be greater than
Ground and less than +5V
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
8
RECEIVER ENABLE
SP211EandSP213Efeatureanenableinput,
which allows the receiver outputs to be either
tri–stated or enabled. This can be especially
useful when the receiver is tied directly to a
shared microprocessor data bus. For the
SP211E, enable is active low; that is, Zero
Volts applied to the ENABLE pin will enable
the receiver outputs. For the SP213E, enable
is active high; that is, +5V applied to the
ENABLE pin will enable the receiver outputs.
Table 2. Shut-down and Wake–Up Truth Tables
SP211E
SD
0
0
1
1
EN#
Drivers
Active
Active
Off
Receivers
Tri-State
Active
Tri-State
Tri-State
1
0
1
0
Off
SP213E
SD#
EN
1
0
1
0
Drivers
Off
Off
Active
Active
Rx 1-3
Rx 4-5
Active
Tri-State
Active
0
0
1
1
Tri-State
Tri-State
Active
Tri-State
Tri-State
POWER UP WITH SD ACTIVE (Charge pump in shutdown mode)
t
0 (POWERUP)
+5V
DATA VALID
R
OUT
0V
t
WAIT
ENABLE
SD
DISABLE
POWER UP WITH SD DISABLED (Charge pump in active mode)
t
0 (POWERUP)
+5V
DATA VALID
R
OUT
0V
t
ENABLE
ENABLE
SD
DISABLE
EXERCISING WAKE–UP FEATURE
t
0 (POWERUP)
+5V
DATA VALID
DATA VALID
DATA VALID
t
ENABLE
R
OUT
0V
t
t
ENABLE
ENABLE
SD
DISABLE
ENABLE
DISABLE
t
WAIT
V
= +5V ±10%; T = 25°C
A
CC
t
t
= 2ms typical, 3ms maximum
WAIT
ENABLE
= 1ms typical, 2ms maximum
Figure 6. Wake–Up Timing
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
9
ESD TOLERANCE
The SP207E Family incorporates rugge-
dized ESD cells on all driver output and
receiver input pins. The ESD structure is
improved over our previous family for more
rugged applications and environments sen-
The IEC-1000-4-2, formerly IEC801-2, is
generallyusedfortestingESDonequipment
and systems. For system manufacturers,
they must guarantee a certain amount of
ESD protection since the system itself is
exposed to the outside environment and
human presence. The premise with
IEC1000-4-2isthatthesystemisrequiredto
withstandanamountofstaticelectricitywhen
ESD is applied to points and surfaces of the
equipment that are accessible to personnel
during normal usage. The transceiver IC
receives most of the ESD current when the
ESDsourceisappliedtotheconnectorpins.
The test circuit for IEC1000-4-2 is shown on
Figure 8. There are two methods within
IEC1000-4-2, theAirDischargemethodand
the Contact Discharge method.
sitive
to
electro-static
discharges and associated transients. The
improved ESD tolerance is at least +15kV
without damage nor latch-up.
There are different methods of ESD testing
applied:
a) MIL-STD-883, Method 3015.7
b) IEC1000-4-2 Air-Discharge
c) IEC1000-4-2 Direct Contact
The Human Body Model has been the
generally accepted ESD testing method for
semiconductors. This method is also
specified in MIL-STD-883, Method 3015.7
for ESD testing. The premise of this ESD
testistosimulatethehumanbody’spotential
to store electro-static energy and discharge
it to an integrated circuit. The simulation is
performedbyusingatestmodelasshownin
Figure 7. This method will test the IC’s
capability to withstand an ESD transient
during normal handling such as in
manufacturing areas where the ICs tend to
be handled frequently.
With the Air Discharge Method, an ESD
voltage is applied to the equipment under
test (EUT) through air. This simulates an
electricallychargedpersonreadytoconnect
a cable onto the rear of the system only to
findanunpleasantzapjustbeforetheperson
touches the back panel. The high energy
potential on the person discharges through
an arcing path to the rear panel of the
system before he or she even touches the
system. This energy, whether discharged
directly or through air, is predominantly a
R
R
S
S
R
R
C
C
SW2
SW2
SW1
SW1
Device
Under
Test
DC Power
Source
C
C
S
S
Figure 7. ESD Test Circuit for Human Body Model
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
10
Contact-Discharge Module
Contact-Discharge Module
R
R
R
R
S
S
R
R
V
V
C
C
SW2
SW2
SW1
SW1
Device
Under
Test
DC Power
Source
C
C
S
S
R
R
and R add up to 330Ω for IEC1000-4-2.
and R add up to 330Ω for IEC1000-4-2.
S
S
V
V
Figure 8. ESD Test Circuit for IEC1000-4-2
function of the discharge current rather than
the discharge voltage. Variables with an air
discharge such as approach speed of the
object carrying the ESD potential to the
system and humidity will tend to change the
discharge current. For example, the rise
time of the discharge current varies with the
approach speed.
30A
15A
0A
The Contact Discharge Method applies the
ESDcurrentdirectlytotheEUT. Thismethod
wasdevisedtoreducetheunpredictabilityof
the ESD arc. The discharge current rise
time is constant since the energy is directly
transferred without the air-gap arc. In
situations such as hand held systems, the
ESD charge can be directly discharged to
theequipmentfromapersonalreadyholding
theequipment. Thecurrentistransferredon
to the keypad or the serial port of the
equipment directly and then travels through
the PCB and finally to the IC.
t=0ns
t=30ns
t ■
Figure 9. ESD Test Waveform for IEC1000-4-2
in the capacitor is then applied through RS,
the current limiting resistor, onto the device
under test (DUT). In ESD tests, the SW2
switchispulsedsothatthedeviceundertest
receives a duration of voltage.
For the Human Body Model, the current
limitingresistor(RS)andthesourcecapacitor
(CS) are 1.5kW an 100pF, respectively. For
IEC-1000-4-2, the current limiting resistor
(RS)andthesourcecapacitor(CS)are330W
an 150pF, respectively.
ThecircuitmodelinFigures7and8represent
the typical ESD testing circuit used for all
three methods. The CS is initially charged
with the DC power supply when the first
switch (SW1) is on. Now that the capacitor
is charged, the second switch (SW2) is on
while SW1 switches off. The voltage stored
The higher CS value and lower RS value in
the IEC1000-4-2 model are more stringent
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
11
than the Human Body Model. The larger
storage capacitor injects a higher voltage to
thetestpointwhenSW2isswitchedon. The
lower current limiting resistor increases the
current charge onto the test point.
EIA STANDARDS
The Electronic Industry Association (EIA)
developed several standards of data trans-
mission which are revised and updated in
order to meet the requirements of the indus-
try. In data processing, there are two basic
means of communicating between systems
and components. The RS--232 standard was
first introduced in 1962 and, since that time,
has become an industry standard.
DEVICE PIN
TESTED
HUMAN BODY
MODEL
IEC1000-4-2
Air Discharge Direct Contact
Level
Driver Outputs
Receiver Inputs
+15kV
+15kV
+15kV
+15kV
+8kV
+8kV
4
4
Table 3. Transceiver ESD Tolerance Levels
Specification
RS–232D
RS–423A
RS–422
RS–485
RS–562
Mode of Operation
Single–Ended
Single–Ended
Differential
Differential
Single–Ended
No. of Drivers and Receivers
Allowed on One Line
1 Driver
1 Receiver
1 Driver
10 Receivers
1 Driver
10 Receivers
32 Drivers
32 Receivers
1 Driver
1 Receiver
Maximum Cable Length
50 feet
4,000 feet
4,000 feet
4,000 feet
C ≤ 2,500pF @ <20Kbps;
C ≤1,000pF @ >20Kbps
64Kb/s
Maximum Data Rate
20Kb/s
100Kb/s
10Mb/s
10Mb/s
Driver output Maximum Voltage
±25V
±6V
–0.25V to +6V
–7V to +12V
–3.7V to +13.2V
Driver Output Signal Level
Loaded
Unloaded
±5V
±15V
±3.6V
±6V
±2V
±5V
±1.5V
±5V
±3.7V
±13.2V
Driver Load Impedance
3 – 7Kohm
450 ohm
100 ohm
54 ohm
3–7Kohm
Max. Driver Output Current
(High Impedance State)
Power On
±100µA
±100µA
Power Off
V
/300
MAX
100µA
±100µA
Slew Rate
30V/µs max.
±15V
Controls Provided
±12V
30V/µs max.
±15V
Receiver Input Voltage Range
Receiver Input Sensitivity
Receiver Input Resistance
–7V to +7V
±200mV
–7V to +12V
±200mV
±3V
±200mV
±3V
3–7Kohm
4Kohm min.
4Kohm min.
12Kohm min.
3–7Kohm
Table 4. EIA Standard Definitions
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
12
TYPICAL APPLICATION CIRCUITS...SP207E TO SP213E
+5V
11
VCC
12
Typical EIA-232
Application:
SP213E, UART &
DB-9 Connector
C1+
C1-
C2+
C2-
V+
V-
14
15
13
17
16
8
9
DCD
DSR
Rx
1
2
3
4
5
16C550
UART
22
23
6
7
8
9
26
7
27
2
DCD
DSR
SI
RTS
Tx
6
3
CTS
DTR
RTS
SO
5
4
1
CTS
DTR
RI
RI
20
19
18
28
CS
NC
NC
SG
21
25
24
CS
SHUTDOWN
VCC or CS *
EN
GND
Figure 10. Typical SP213E Application
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
13
TYPICAL APPLICATION CIRCUITS...SP207E TO SP213E
+5V INPUT
+5V INPUT
0.1µF
6.3V
9
0.1µF
6.3V
9
10
+
0.1µF
6.3V
C1
+
10
+
0.1µF
6.3V
VCC
11
15
C1
+
+
+
0.1µF
6.3V
VCC
V +
V –
11
15
+
+
0.1µF
6.3V
V +
V –
12
13
0.1µF
C1
C2
–
+
12
13
0.1µF
C1
C2
–
+
16V
+
16V
+
0.1µF
16V
0.1µF
16V
SP207E
400KOHM
400KOHM
400KOHM
400KOHM
400KOHM
SP208E
400KOHM
400KOHM
400KOHM
400KOHM
14
14
C2
–
C2
–
7
6
2
5
18
19
21
2
T1
T2
T3
T4
T5
T1 IN
T1 OUT
T1
T2
T3
T4
T1 IN
T
T
T
T
1 OUT
2 OUT
3 OUT
4 OUT
3
1
T2 IN
T3 IN
T4 IN
T5 IN
T2 OUT
T2 IN
T3 IN
T4 IN
1
18
19
21
24
20
T3 OUT
24
20
T
4 OUT
5 OUT
6
4
7
T
R1
R1 OUT
R2 OUT
R3 OUT
R1 IN
R2 IN
R3 IN
5KOHM
5KOHM
5KOHM
5KOHM
3
5
22
17
4
R2
R3
R1
R
1 OUT
R1 IN
R2 IN
R3 IN
5KOHM
5KOHM
5KOHM
22
23
23
16
R2
R3
R2 OUT
R3 OUT
17
16
R4
R
4 OUT
R4 IN
8
8
GND
GND
+5V INPUT
+5V INPUT
0.1µF
11
0.1µF
6.3V
11
VCC
12
6.3V
+
0.1µF
6.3V
12
C1
+
+
0.1µF
6.3V
VCC
13
17
C1
+
+
+
0.1µF
6.3V
V +
V –
13
+
+
0.1µF
6.3V
V +
V –
14
15
0.1µF
16V
+
C1
C2
–
+
14
15
0.1µF
C1
C2
–
+
16V
+
17
0.1µF
16V
SP211E
400KOHM
400KOHM
400KOHM
400KOHM
0.1µF
16V
SP213E
16
C2
–
16
C2
–
400KOHM
400KOHM
400KOHM
400KOHM
7
6
2
7
6
T1
T2
T3
T4
2
T1 IN
T
T
T
T
1 OUT
2 OUT
3 OUT
4 OUT
T1
T2
T3
T4
T1 IN
T
1 OUT
3
T2 IN
T3 IN
T4 IN
3
T2 IN
T3 IN
T4 IN
T2 OUT
1
20
21
1
20
21
T3 OUT
28
28
T4 OUT
8
5
9
R1
R
1 OUT
R1 IN
R2 IN
R3 IN
8
5
9
R1
R1 OUT
R2 OUT
R3 OUT
R1 IN
R2 IN
R3 IN
5KOHM
5KOHM
5KOHM
5KOHM
5KOHM
4
5KOHM
5KOHM
5KOHM
5KOHM
5KOHM
R2
R3
R2 OUT
R3 OUT
4
R2
R3
26
27
26
27
22
23
18
25
R4
R5
R4 OUT
R4IN
R5 IN
SD
22
23
R4
R5
R4 OUT*
R4IN*
R5 IN*
SD
19
24
R5 OUT
EN
19
24
18
25
R5 OUT*
EN
10
GND
10
GND
*Receivers active during shutdown
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
14
PACKAGE: PLASTIC SHRINK
SMALL OUTLINE
(SSOP)
E
H
D
A
Ø
A1
L
e
B
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
24–PIN
28–PIN
A
A1
B
D
E
0.068/0.078
(1.73/1.99)
0.068/0.078
(1.73/1.99)
0.002/0.008
(0.05/0.21)
0.002/0.008
(0.05/0.21)
0.010/0.015
(0.25/0.38)
0.010/0.015
(0.25/0.38)
0.317/0.328
(8.07/8.33)
0.397/0.407
(10.07/10.33)
0.205/0.212
(5.20/5.38)
0.205/0.212
(5.20/5.38)
e
0.0256 BSC
(0.65 BSC)
0.0256 BSC
(0.65 BSC)
H
L
0.301/0.311
(7.65/7.90)
0.301/0.311
(7.65/7.90)
0.022/0.037
(0.55/0.95)
0.022/0.037
(0.55/0.95)
Ø
0°/8°
(0°/8°)
0°/8°
(0°/8°)
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
15
PACKAGE: PLASTIC
SMALL OUTLINE (SOIC)
(WIDE)
E
H
D
A
Ø
A1
L
e
B
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
24–PIN
28–PIN
A
A1
B
D
E
0.093/0.104
0.093/0.104
(2.352/2.649) (2.352/2.649)
0.004/0.012
(0.102/0.300) (0.102/0.300)
0.004/0.012
0.013/0.020 0.013/0.020
(0.330/0.508) (0.330/0.508)
0.599/0.614 0.697/0.713
(15.20/15.59) (17.70/18.09)
0.291/0.299 0.291/0.299
(7.402/7.600) (7.402/7.600)
e
0.050 BSC
(1.270 BSC)
0.050 BSC
(1.270 BSC)
H
L
0.394/0.419
0.394/0.419
(10.00/10.64) (10.00/10.64)
0.016/0.050
(0.406/1.270) (0.406/1.270)
0.016/0.050
Ø
0°/8°
(0°/8°)
0°/8°
(0°/8°)
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
16
PACKAGE: PLASTIC
DUAL–IN–LINE
(NARROW)
E1
E
D1 = 0.005" min.
(0.127 min.)
A1 = 0.015" min.
(0.381min.)
D
A = 0.210" max.
(5.334 max).
C
A2
Ø
L
B1
B
e
= 0.300 BSC
(7.620 BSC)
e = 0.100 BSC
(2.540 BSC)
A
ALTERNATE
END PINS
(BOTH ENDS)
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
24–PIN
0.115/0.195
(2.921/4.953)
A2
0.014/0.022
(0.356/0.559)
B
0.045/0.070
B1
C
(1.143/1.778)
0.008/0.014
(0.203/0.356)
1.230/1.280
(31.24/32.51)
D
0.300/0.325
(7.620/8.255)
E
0.240/0.280
E1
L
(6.096/7.112)
0.115/0.150
(2.921/3.810)
0°/ 15°
(0°/15°)
Ø
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
17
ORDERING INFORMATION
RS232 Transceivers:
Model .................... Drivers .......................... Receivers ..................................... Temperature Range ................................. Package Type
SP207ECA ................. 5 ....................................... 3 ................................................... 0°C to +70°C ............................................... 24–pin SSOP
SP207ECP ................. 5 ....................................... 3 ................................................... 0°C to +70°C ....................................... 24–pin Plastic DIP
SP207ECT ................. 5 ....................................... 3 ................................................... 0°C to +70°C ................................................ 24–pin SOIC
SP207EEA ................. 5 ....................................... 3 ............................................... –40°C to +85°C ............................................... 24–pin SSOP
SP207EEP ................. 5 ....................................... 3 ............................................... –40°C to +85°C ....................................... 24–pin Plastic DIP
SP207EET ................. 5 ....................................... 3 ............................................... –40°C to +85°C ................................................ 24–pin SOIC
SP208ECA ................. 4 ....................................... 4 ................................................... 0°C to +70°C ............................................... 24–pin SSOP
SP208ECP ................. 4 ....................................... 4 ................................................... 0°C to +70°C ....................................... 24–pin Plastic DIP
SP208ECT ................. 4 ....................................... 4 ................................................... 0°C to +70°C ................................................ 24–pin SOIC
SP208EEA ................. 4 ....................................... 4 ............................................... –40°C to +85°C ............................................... 24–pin SSOP
SP208EEP ................. 4 ....................................... 4 ............................................... –40°C to +85°C ....................................... 24–pin Plastic DIP
SP208EET ................. 4 ....................................... 4 ............................................... –40°C to +85°C ................................................ 24–pin SOIC
RS232 Transceivers with Low–Power Shutdown and Tri–state Enable:
Model .................... Drivers .......................... Receivers ..................................... Temperature Range ................................. Package Type
SP211ECA ............ 4 ....................................... ....5 ............................... ...................0°C to +70°C............. ................................... 28–pin SSOP
SP211ECT ............ 4 ....................................... ....5 ............................... ...................0°C to +70°C.......... ....................................... 28–pin SOIC
SP211EEA ............ 4 ....................................... ....5 ............................... ...............–40°C to +85°C................ ................................ 28–pin SSOP
SP211EET ............ 4.... ................................... ....5 ............................... ...............–40°C to +85°C................... ............................. 28–pin SOIC
RS232 Transceivers with Low–Power Shutdown, Tri–state Enable, andWake–Up Function:
Model .................... Drivers .......................... Receivers ..................................... Temperature Range ................................. Package Type
SP213ECA ............ 4 ....................................... 5, with 2 active in Shutdown ................................ 0°C to +70°C ....................... ....28–pin SSOP
SP213ECT ............ 4 ....................................... 5, with 2 active in Shutdown ................................ 0°C to +70°C ............................ 28–pin SOIC
SP213EEA ............ 4 ....................................... 5, with 2 active in Shutdown ................................ –40°C to +85°C ....................... 28–pin SSOP
SP213EET ............ 4 ....................................... 5, with 2 active in Shutdown ................................ –40°C to +85°C ........................ 28–pin SOIC
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SP213EET/TR = standard; SP213EET-L/TR = lead free.
/TR = Tape and Reel
Solved by Sipex
TM
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
© Copyright 2006 Sipex Corporation
18
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