SP491E [EXAR]
Enhanced Full Duplex RS-485 Transceivers; 增强型全双工RS- 485收发器
| 型号： | SP491E |
| 厂家： | 
EXAR CORPORATION |
| 描述： | Enhanced Full Duplex RS-485 Transceivers |
| 文件： | 总15页 (文件大小：811K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SP490E/491E
EnhancedꢀFullꢀDuplexꢀRS-485ꢀTransceivers
FEATURES
• +5V Only
• Low Power BiCMOS
• Driver/Receiver Enable (SP49ꢀE)
• RS-485 and RS-422 Drivers/Receivers
• Pin Compatible with LTC490 and
SN75ꢀ79 (SP490E)
• Pin Compatible with LTC49ꢀ and
SN75ꢀ80 (SP49ꢀE)
• Improved ESD Specifications:
±ꢀ5kV Human Body Model
±ꢀ5kV IEC6ꢀ000-4-2 Air Discharge
±8kV IEC6ꢀ000-4-2 Contact Discharge
Now Available in Lead Free Packaging
DESCRIPTION
The SP490E is a low power differential line driver/receiver meeting RS-485 and RS-422
standards up to ꢀ0Mbps. The SP491E is identical to the SP490E with the addition of driver
and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity,
over wide common mode range. The SP490E is available in 8-pin plastic DIP and 8-pin
NSOIC packages for operation over the commercial and industrial temperature ranges.
The SP491E is available in ꢀ4-pin DIP and ꢀ4-pin NSOIC packages for operation over the
commercial and industrial temperature ranges.
BLOCKꢀDIAGRAMS
ꢀ
ꢀ
ꢀ
SP490Eꢀ
ꢀ
ꢀ
ꢀ
SP491E
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
ABSOLUTEꢀMAXIMUMꢀRATINGS
These are stress ratings only and functional operation of the device at
theseratingsoranyotherabovethoseindicatedintheoperationsections
ofthespecificationsbelowisnotimplied. Exposuretoabsolutemaximum
rating conditions for extended periods of time may affect reliability.
VCC....................................................................................................+7V
Input Voltages
Drivers................................................-0.5V to (VCC+0.5V)
Receivers..................................................................±ꢀ4V
Output Voltages
Drivers......................................................................±ꢀ4V
Receivers...........................................-0.5V to (VCC+0.5V)
Storage Temperature....................................................-65˚C to +150˚
Power Dissipation.....................................................................ꢀ000mW
ELECTRICALꢀCHARACTERISTICSꢀ
TMINꢀtoꢀTMAXꢀꢀandꢀVCCꢀ=ꢀ5Vꢀ±ꢀ5%ꢀunlessꢀotherwiseꢀnoted.
PARAMETERSꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀMIN.ꢀꢀꢀꢀꢀꢀꢀTYP.ꢀꢀꢀꢀꢀꢀꢀMAX.ꢀꢀꢀꢀUNITSꢀ ꢀꢀꢀCONDITIONS
ꢀꢀꢀꢀꢀSP490EꢀDRIVER
DCꢀCharacteristics
Differential Output Voltage
Differential Output Voltage
GND
2
VCC
VCC
Volts
Volts
Unloaded; R = ∞ ; see figure 1
With Load; R = 50Ω; (RS422);
see figure 1
Differential Output Voltage
ꢀ.5
2.0
VCC
Volts
With Load;R = 27Ω; (RS485);
see figure 1
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
0.2
3
Volts
R = 27Ω or R = 50Ω; see figure 1
Volts
Volts
Volts
µA
R = 27Ω or R = 50Ω; see figure 1
Applies to D
Applies to D
0.8
±ꢀ0
Applies to D
Driver Short-Circuit Current
VOUT = HIGH
VOUT = LOW
250
250
mA
mA
-7V ≤ V ≤ +12V
-7V ≤ VOO ≤ +12V
SP490EꢀDRIVER
ꢀꢀꢀꢀꢀACꢀCharacteristicsꢀ
Maximum Data Rate
Driver Input to Output
ꢀ0
Mbps
ns
30
30
5
60
60
tPLH; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 5
tPHL; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 5
Driver Input to Output
Driver Skew
ns
ns
ns
see figures 3 and 5,
tSKEW = | tDPLH - tDPHL
|
Driver Rise or Fall Time
ꢀ5
40
From ꢀ0% to 90%; RDIFF = 54Ω,
CLꢀ = CL2 = ꢀ00pF; see figures 3 and 5
ꢀꢀꢀꢀꢀSP490EꢀRECEIVERꢀ
DCꢀCharacteristics
Differential Input Threshold
Input Hysteresis
Output Voltage High
Output Voltage Low
Input Resistance
Input Current (A, B); VIN = ꢀ2V
Input Current (A, B); VIN = -7V
Short-Circuit Current
-0.2
3.5
12
+0.2 Volts
mV
-7V ≤ VCM ≤ 12V
VCM = 0V
I = -4mA, VID = +200mV
IO = +4mA, VID = -200mV
-O7V ≤ VCM ≤ 12V
VIN = ꢀ2V
70
Volts
0.4
Volts
15
kΩ
±ꢀ.0 mA
-0.8
mA
VIN = -7V
0V ≤ VO ≤ VCC
85
mA
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
2
ELECTRICALꢀCHARACTERISTICSꢀ
TMINꢀtoꢀTMAXꢀꢀandꢀVCCꢀ=ꢀ5Vꢀ±ꢀ5%ꢀunlessꢀotherwiseꢀnoted.
PARAMETERSꢀ
MIN.ꢀ
TYP.ꢀ
MAX.ꢀ UNITSꢀ CONDITIONSꢀ
SP490EꢀRECEIVER
ACꢀCharacteristics
Maximum Data Rate
Receiver Input to Output
ꢀ0
20
Mbps
ns
45
45
ꢀ3
ꢀ00
ꢀ00
t
C
t
; R
= 54Ω,
PLH = CDILF2F=ꢀ00pF; Figures 3 & 7
Receiver Input to Output
20
ns
ns
Lꢀ; RDIFF = 54Ω,
CPHLꢀL = CL2 = ꢀ00pF; Figures 3 & 7
RDIFF = 54Ω; CLꢀ = CL2 = ꢀ00pF;
Figures 3 & 7
Diff. Receiver Skew ItPLH-tPHL
I
POWERꢀREQUIREMENTS
Supply Voltage
Supply Current
+4.75
+5.25 Volts
µA
900
ENVIRONMENTALꢀANDꢀ
MECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
Storage Temperature
Package
0
-40
-65
+70
+85
+ꢀ50 °C
°C
°C
Plastic DIP (_P)
NSOIC (_N)
Figure ꢀ. Driver DC Test Load Circuit
Figure 2. Receiver Timing Test Load Circuit
Figure 3. Driver/Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load #2 Circuit
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
3
Figure 5. Driver Propagation Delays
Figure 6. Driver Enable and Disable Times
Figure 7. Receiver Propagation Delays
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
4
ABSOLUTEꢀMAXIMUMꢀRATINGS
Theseꢀareꢀstressꢀratingsꢀonlyꢀandꢀfunctionalꢀoperationꢀofꢀtheꢀdeviceꢀ
atꢀtheseꢀratingsꢀorꢀanyꢀotherꢀaboveꢀthoseꢀindicatedꢀinꢀtheꢀoperationꢀ
sections of the specifications below is not implied. Exposure to
absolute maximum rating conditions for extended periods of time
may affect reliability.
VCC...................................................................................................+7V
InputꢀVoltages
ꢀ
ꢀ
ꢀ
Logic.................................................-0.5Vꢀtoꢀ(VCC+0.5V)
Drivers..............................................-0.5Vꢀtoꢀ(VCC+0.5V)
Receivers................................................................±14V
OutputꢀVoltages
ꢀ
ꢀ
ꢀ
Logic................................................-0.5Vꢀtoꢀ(VCC+0.5V)
Drivers....................................................................±14V
Receivers.........................................-0.5Vꢀtoꢀ(VCC+0.5V)
Storage Temperature.....................................................-65˚C to +150
Power Dissipation.................................................................1000mW
ELECTRICALꢀCHARACTERISTICSꢀ
TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERSꢀ
SP491EꢀDRIVER
MIN.ꢀ
TYP.ꢀ
MAX.ꢀ UNITSꢀ CONDITIONSꢀ
DCꢀCharacteristics
Differential Output Voltage
Differential Output Voltage
GND
2
VCC
VCC
Volts
Volts
Unloaded; R = ∞ ; see figure 1
With Load; R = 50Ω; (RS422);
see figure 1
Differential Output Voltage
ꢀ.5
VCC
Volts
With Load; R = 27Ω; (RS485);
see figure
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
0.2
3
Volts
R = 27Ω or R = 50Ω; see figure 1
Volts
Volts
Volts
µA
R = 27Ω or R = 50Ω; see figure 1
Applies to D, RE, DE
Applies to D, RE, DE
2.0
0.8
±ꢀ0
Applies to D, RE, DE
Driver Short-Circuit Current
VOUT = HIGH
VOUT = LOW
250
250
mA
mA
-7V ≤ V ≤ 12V
-7V ≤ VOO ≤ 12V
SP491EꢀDRIVER
ACꢀCharacteristics
Maximum Data Rate
Driver Input to Output
ꢀ0
Mbps
ns
RE = 5V, DE = 5V
tPLH; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 5
tPHL; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 5
see figures 3 and 5,
tSKEW = | tDPLH - tDPHL
From ꢀ0% to 90%; RDIFF = 54Ω,
CLꢀ = CL2 = ꢀ00pF; see figures 3 and 5
30
30
5
60
60
ꢀ0
40
70
70
70
70
Driver Input to Output
ns
ns
ns
ns
ns
ns
ns
Driver Skew
|
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
ꢀ5
40
40
40
40
C
= CL2 = ꢀ00pF; see figures
4Laꢀnd 6; S2 closed
= CL2 = ꢀ00pF; see figures
4Laꢀnd 6; Sꢀ closed
= CL2 = ꢀ00pF; see figures
4Laꢀnd 6; Sꢀ closed
= CL2 = ꢀ00pF; see figures
4Laꢀnd 6; S2 closed
C
C
C
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
5
ELECTRICALꢀCHARACTERISTICSꢀ
TMINꢀtoꢀTMAXꢀꢀandꢀVCCꢀ=ꢀ5Vꢀ±ꢀ5%ꢀunlessꢀotherwiseꢀnoted.
PARAMETERSꢀ
MIN.ꢀ
TYP.ꢀ
MAX.ꢀ UNITSꢀ CONDITIONSꢀ
SP491EꢀRECEIVER
DCꢀCharacteristics
Differential Input Threshold
Input Hysteresis
-0.2
+0.2 Volts
mV
-7V ≤ VCM ≤ 12V
VCM = 0V
70
Output Voltage High
Output Voltage Low
3.5
Volts
Volts
I = -4mA, VID = +200mV
0.4
IOO = +4mA, VID = -200mV
Three State (high impedance)
Output Current
Input Resistance
±1
µA
kΩ
0.4V ≤ V ≤ 2.4V; RE = 5V
-7V ≤ VCMO ≤ 12V
12
15
Input Current (A, B); VIN = ꢀ2V
Input Current (A, B); VIN = -7V
Short-Circuit Current
±ꢀ.0 mA
DE = 0V, VCC = 0V or 5.25V, VIN = ꢀ2V
DE = 0V, VCC = 0V or 5.25V, VIN = -7V
0V ≤ VO ≤ VCC
-0.8
mA
85
mA
SP491EꢀRECEIVER
ACꢀCharacteristics
Maximum Data Rate
Receiver Input to Output
ꢀ0
20
Mbps
ns
RE = 0V
45
45
ꢀ3
ꢀ00
ꢀ00
t
C
t
; R
= 54Ω,
PLH = CDILF2F=ꢀ00pF; Figures 3 & 7
Receiver Input to Output
20
ns
ns
Lꢀ; RDIFF = 54Ω,
CPHLꢀL = CL2 = ꢀ00pF; Figures 3 & 7
RDIFF = 54Ω; CLꢀ = CL2 = ꢀ00pF;
Figures 3 & 7
Diff. Receiver Skew ItPLH-tPHL
I
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
45
45
45
45
70
70
70
70
ns
ns
ns
ns
CRL = ꢀ5pF; Figures 2 and 8; S closed
CRL = ꢀ5pF; Figures 2 and 8; Sꢀ closed
CRL = ꢀ5pF; Figures 2 and 8; S2 closed
CRL = ꢀ5pF; Figures 2 and 8; S2ꢀ closed
POWERꢀREQUIREMENTS
Supply Voltage
+4.75
+5.25 Volts
µA
Supply Current
900
RE, D = 0V or VCC; DE = VCC
SP491EꢀENVIRONMENTAL
ANDꢀMECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
0
-40
-65
+70
+85
+ꢀ50 °C
°C
°C
Storage Temperature
Package
Plastic DIP (_P)
NSOIC (_N)
Figure 8. Receiver Enable and Disable Times
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
6
DESCRIPTION
ThedriveroftheSP491Ehasadriverenable
control line which is active high. Alogic high
on DE (pin 4) of the SP491E will enable
the differential driver outputs. A logic low
on DE (pin 4) of the SP491E will tri-state the
driver outputs. The SP490E does not have
a driver enable.
The SP490E and SP491E are
full-duplex differential transceiv-
ers that meet the requirements of
RS-485andRS-422.FabricatedwithaExar
proprietaryBiCMOSprocess, bothproducts
require a fraction of the power of older bi-
polar designs.
Receiver...
The RS-485 standard is ideal for multi-drop
applications or for long-distance interfaces.
RS-485 allows up to 32 drivers and 32
receivers to be connected to a data bus,
making it an ideal choice for multi-drop
applications. Since the cabling can be as
long as 4,000 feet, RS-485 transceivers are
equipped with a wide (-7V to +ꢀ2V) com-
mon mode range to accommodate ground
potential differences. Because RS-485
is a differential interface, data is virtually
immune to noise in the transmission line.
The receivers for both the SP490E and
SP491E have differential inputs with an
input sensitivity as low as ±200mV. Input
impedance of the receivers is typically
15kΩ (12kΩ minimum). A wide common
mode range of -7V to +ꢀ2V allows for
large ground potential differences be-
tween systems. The receivers for both the
SP490E and SP491E are equipped with the
fail-safe feature. Fail-safe guarantees that
the receiver output will be in a high state
when the input is left unconnected.
Driver...
The receiver of the SP491E has a receiver
enablecontrollinewhichisactivelow.Alogic
lowonREB(pin3)oftheSP491Ewillenable
the differential receiver.Alogic high on REB
(pin 3) of the SP491E will tri-state the re-
ceiver.
ThedriversforboththeSP490EandSP491E
havedifferentialoutputs.Thetypicalvoltage
output swing with no load will be 0 volts to
+5 volts. With worst case loading of 54Ω
acrossthedifferentialoutputs,thedrivercan
maintain greater than ꢀ.5V voltage levels.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
7
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
anarcingpathtotherearpanelofthesystem
before he or she even touches the system.
This energy, whether discharged directly or
throughair,ispredominantlyafunctionofthe
discharge current rather than the discharge
voltage. Variableswithanairdischargesuch
asapproachspeedoftheobjectcarryingthe
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.
ESDꢀTOLERANCE
The SP490E/SP49ꢀE devices incorporates
ruggedized ESD cells on all driver output
and receiver input pins. The ESD structure
is improved over our previous family for
moreruggedapplicationsandenvironments
sensitive to electro-static discharges and
associated transients. The improved ESD
tolerance is at least ±ꢀ5kV without damage
nor latch-up.
There are different methods of ESD testing
applied:
a) MIL-STD-883, Method 30ꢀ5.7
b) IEC6ꢀ000-4-2 Air-Discharge
c) IEC6ꢀ000-4-2 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
forESDtesting.ThepremiseofthisESDtest
is to simulate the human body’s potential to
store electro-static energy and discharge it
to an integrated circuit. The simulation is
performed by using a test model as shown
in Figure 9. This method will test the IC’s
capability to withstand an ESD transient
during normal handling such as in manu-
facturing areas where the ICs tend to be
handled frequently.
The Contact Discharge Method applies the
ESDcurrentdirectlytotheEUT. Thismethod
was devised to reduce the unpredictability
of the ESD arc. The discharge current rise
time is constant since the energy is directly
transferred without the air-gap arc. In situ-
ations such as hand held systems, the ESD
charge can be directly discharged to the
equipment from a person already holding
the equipment. The current is transferred
on to the keypad or the serial port of the
equipment directly and then travels through
the PCB and finally to the IC.
The IEC-6ꢀ000-4-2, formerly IEC80ꢀ-2, is
generallyusedfortestingESDonequipment
and systems. For system manufacturers,
theymustguaranteeacertainamountofESD
protection since the system itself is exposed
totheoutsideenvironmentandhumanpres-
ence. ThepremisewithIEC6ꢀ000-4-2isthat
thesystemisrequiredtowithstandanamount
of static electricity when 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 ESD source is
appliedtotheconnectorpins. Thetestcircuit
for IEC6ꢀ000-4-2 is shown on Figure ꢀ0.
TherearetwomethodswithinIEC6ꢀ000-4-2,
the Air Discharge method and the Contact
Discharge method.
The circuit model in Figures 9 and ꢀ0 repre-
sent the typical ESD testing circuit used for
allthreemethods. TheCS isinitiallycharged
with the DC power supply when the first
switch (SWꢀ) is on. Now that the capacitor
is charged, the second switch (SW2) is on
while SWꢀ switches off. The voltage stored
in the capacitor is then applied through R ,
the current limiting resistor, onto the devicSe
under test (DUT). In ESD tests, the SW2
switch is pulsed so that the device under
test receives a duration of voltage.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
8
For the Human Body Model, the current
limitingresistor(RS)andthesourcecapacitor
(CS) are 1.5kΩ an 100pF, respectively. For
IEC-6ꢀ000-4-2, the current limiting resistor
(R ) and the source capacitor (CS) are 330Ω
anSꢀ50pF, respectively.
The higher CS value and lower R value in
the IEC6ꢀ000-4-2 model are moreSstringent
than the Human Body Model. The larger
storage capacitor injects a higher voltage
to the test point when SW2 is switched on.
The lower current limiting resistor increases
the current charge onto the test point.
R
R
C
S
SW1
SW2
Device
Under
Test
C
DC Power
Source
S
Figure 9. ESD Test Circuit for Human Body Model
Contact-Discharge Model
R
R
C
R
V
S
SW1
SW2
Device
Under
Test
C
DC Power
Source
S
and
add up to 330Ω for IEC61000-4-2.
R
V
R
S
Figure ꢀ0. ESD Test Circuit for IEC6ꢀ000-4-2
30A
15A
0A
t = 0ns
t = 30ns
t →
Figure ꢀꢀ. ESD Test Waveform for IEC6ꢀ000-4-2
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
9
Sp490E, Sp491E
Family
Hꢀꢁꢂꢃ BꢄDꢅ
IEC61000-4-2
ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀMODELꢀ ꢀꢀꢀꢀꢀꢀꢀꢀꢀAirꢀDischargeꢀꢀꢀꢀꢀDirectꢀContactꢀ ꢀꢀꢀꢀꢀꢀꢀꢀLevel
Driver Outputs
Receiver Inputs
±ꢀ5kV
±ꢀ5kV
±ꢀ5kV
±ꢀ5kV
±8kV
±8kV
4
4
Tabke ꢀ. Transceiver ESD Tolerance Levels
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
ꢀ0
PACKAGE:ꢀ8ꢀPINꢀNSOIC
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
ꢀꢀ
PACKAGE:ꢀ14ꢀPINꢀNSOIC
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
ꢀ2
PACKAGE:ꢀ8ꢀPINꢀPDIP
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
ꢀ3
PACKAGE:ꢀ14ꢀPINꢀPDIP
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
ꢀ4
ORDERINGꢀINFORMATION
ꢁodel
Temperature Range
Package
SP490ECN-L..................................................................................0˚C to +70˚C ............................................................................... 8-Pin NSOIC
SP490ECN-L/TR............................................................................0˚C to +70˚C ............................................................................... 8-Pin NSOIC
SP490ECP-L..................................................................................0˚C to +70˚C .................................................................................8-Pin PDIP
SP490EEN-L................................................................................ -40˚C to +85˚C.............................................................................. 8-Pin NSOIC
SP490EEN-L/TR.......................................................................... -40˚C to +85˚C.............................................................................. 8-Pin NSOIC
SP490EEP-L................................................................................ -40˚C to +85˚C................................................................................8-Pin PDIP
SP49ꢀECN-L..................................................................................0˚C to +70˚C .............................................................................. ꢀ4-Pin NSOIC
SP49ꢀECN-L/TR............................................................................0˚C to +70˚C .............................................................................. ꢀ4-Pin NSOIC
SP49ꢀECP-L..................................................................................0˚C to +70˚C ................................................................................ꢀ4-Pin PDIP
SP49ꢀEEN-L................................................................................ -40˚C to +85˚C............................................................................. ꢀ4-Pin NSOIC
SP49ꢀEEN-L/TR.......................................................................... -40˚C to +85˚C............................................................................. ꢀ4-Pin NSOIC
SP49ꢀEEP-L................................................................................ -40˚C to +85˚C...............................................................................ꢀ4-Pin PDIP
Note: /TR = Tape and Reel
REVISION HISTORY
Date
Revision Description
2000
ꢀ4
Sipex Legacy Data Sheet
May 20ꢀꢀ
ꢀ.0.0
Convert to Exar format. Remove driver propagation delay minimum and
driver rise/fall time minimum entry for SP490E and SP49ꢀE. Update
ESD rating to IEC6ꢀ000-4-2. Update ordering information.
Notice
EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliabil-
ity. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for
illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked;
no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for
use in such applications unless EXAR Corporation receives, in writting, assurances to its satisfaction that: (a) the risk of injury or damage has been
minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Copyright 20ꢀꢀ EXAR Corporation
Datasheet May 20ꢀꢀ
Send your serial transceiver technical inquiry with technical details to: serialtechsupport@exar.com
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490E,49ꢀE_ꢀ00_0527ꢀꢀ
ꢀ5
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