UM491EEPE [UNIONSEMI]
Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission;
| 型号： | UM491EEPE |
| 厂家： | 
Union Semiconductor, Inc. |
| 描述： | Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission |
| 文件： | 总17页 (文件大小：363K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UM488/UM491
±15kV ESD-Protected, Fail-Safe, Slew-Rate-Limited RS-422
Transceivers in SOP8/DIP8/SOP14/DIP14
General Description
The UM488/UM491 is ±15kV electrostatic discharge (ESD)-protected, high-speed transceivers for
RS-422 communication that contain one driver and one receiver. The UM491 contains an additional
receiver and driver enable control. The device features fail-safe circuitry, which guarantees a
logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver
output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). The
UM488/UM491 offers higher driver output slew-rate limits, allowing transmit speeds up to 2.5Mbps.
The device features enhanced ESD protection. All transmitter outputs and receiver inputs are
protected to ±15kV using the Human Body Model.
These transceivers typically draw 375µA of supply current when unloaded, or when fully loaded
with the drivers disabled.
The device has a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the
bus. The UM488/UM491 is intended for full-duplex communications.
Applications
Features
RS-422 Communications
Level Translators
Transceivers for EMI-Sensitive
Applications
Industrial-Control Local Area Networks
ESD Protection for RS-422 I/O Pins
±15kV, Human Body Model
True Fail-Safe Receiver while Maintaining
EIA/TIA-422 Compatibility
Enhanced Slew-Rate Limiting Facilitates
Error-Free Data Transmission
1nA Low-Current Shutdown Mode
(UM491)
Allow up to 256 Transceivers on the Bus
Selector Guide
Data
Rate
Slew-
Rate
Low-
Power
Receiver/
Driver
Enable
Quiescent Transceivers
Part
Number
Half/Full
Duplex
Pin
Count
Current
(µA)
on
Bus
(Mbps) Limited Shutdown
UM488
UM491
full
full
2.5
2.5
Yes
Yes
No
No
375
375
256
256
8
Yes
Yes
14
Ordering Information
Part Number
UM488EESA
UM488EEPA
UM491EESE
UM491EEPE
Temperature Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Packaging Type
SOP8
Shipping Qty
2500pcs/13 Inch
Tape & Reel
DIP8
50pcs/Tube
2500pcs/13 Inch
Tape & Reel
SOP14
DIP14
25pcs/Tube
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UM488/UM491
Pin Configurations
Top View
14 VCC
NC
1
2
R
13
12
11
10
9
NC
A
RO
RE
3
4
5
6
7
B
DE
Z
DI
D
GND
Y
XX: Week Code
UM491EESE
SOP14
XX: Week Code
UM491EEPE
DIP14
8
GND
NC
UM488
EESA
XX
UM488
EEPA
XX
1
8
VCC
RO
A
R
2
3
4
7
6
5
B
Z
Y
DI
D
GND
XX: Week Code
UM488EESA
SOP8
XX: Week Code
UM488EEPA
DIP8
Absolute Maximum Ratings
Symbol
Parameter
Supply Voltage
Value
Unit
V
VCC
+7
______
-0.3V to (VCC + 0.3V)
-0.3V to (VCC + 0.3V)
±13
V
Control Input Voltage (RE, DE)
Driver Input Voltage (DI)
V
Driver Output Voltage (A, B, Y, Z)
Receiver Input Voltage (A, B)
Receiver Output Voltage (RO)
V
±25
V
-0.3V to (VCC + 0.3V)
V
8-Pin SO (derate 9.09mW/°C above +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)
14-Pin Plastic DIP (derate 10.0mW/°C above +70°C)
520
727
800
PD
mW
14-Pin SO (derate 8.33mW/°C above +70°C)
Ambient Temperature
667
TA
TSTG
TL
-40 to +85
-65 to +150
+300
°C
°C
°C
Storage Temperature Range
Lead Temperature for Soldering 10 seconds
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UM488/UM491
DC Electrical Characteristics
(VCC = +5V ± 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V
and TA = +25°C.) (Note 1)
Parameter
DRIVER
Symbol
Test Conditions
Min
Typ
Max Unit
Differential Driver Output
(No Load)
VOD1
VOD2
Figure 3
V
V
5
Differential Driver Output
Figure
Figure
Figure
3
3
3
,
,
,
R
R
R
=
=
=
=
50Ω
50Ω
50Ω
50Ω
2.0
Change-in-Magnitude of
Differential Output Voltage
(Note 2)
ΔVOD
VOC
V
V
V
0.2
3.0
0.2
Driver Common-Mode
Output Voltage
Change-in-Magnitude of
Common-Mode Voltage
(Note 2)
ΔVOC
Figure 3,
R
______
Input High Voltage
Input Low Voltage
VIH
VIL
2.0
V
V
DE, DI, RE
______
0.8
DE, DI, RE
VHYS
DI Input Hysteresis
mV
µA
100
DE = GND,
VCC = GND or
5.25V
VIN = 12V
125
Input Current (A and B)
IIN
-75
VIN = -7V
VIN = 12V
VIN = -7V
DE = GND,
VCC = GND or
5.25V
125
Output Leakage (Y and Z)
IO
µA
-100
-250
-7V≤VOUT≤VCC
Driver Short-Circuit Output
Current (Note 3)
VOD1
mA
0V≤VOUT≤12V
0V≤VOUT≤VCC
250
±25
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UM488/UM491
DC Electrical Characteristics (Continued)
(VCC = +5V ± 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V
and TA = +25°C.) (Note 1)
Parameter
RECEIVER
Symbol
Test Conditions
Min
Typ
Max Unit
Receiver Differential
Threshold Voltage
VTH
-7V≤VCM≤12V
-200
-125
25
-50
mV
Receiver Input Hysteresis
mV
V
Δ
VTH
VOH
VOL
IO
IO
=
=
-4mA, VID
4mA, VID
= -50mV
Receiver Output High Voltage
VCC-1.5
=
-200mV
2.4V
Receiver Output Low Voltage
0.4
±1
V
Three-State Output Current at
Receiver
IOZR
RIN
0.4V
-7V
≤
VO
≤
µA
≤
VCM
≤
12V
VCC
Receiver Input Resistance
96
±7
kΩ
Receiver Output Short Circuit
Current
IOSR
0V≤VRO
≤
±95
mA
µA
SUPPLY CURRENT
DE
DE
= VCC
430
375
900
600
No load,
_______
ICC
Supply Current
R E
= DI =
GND or VCC
=
=
GND
VCC
Supply Current in Shutdown
Mode
ISHDN
DE = GND, VRE
0.001
±15
10
µA
kV
ESD Protection for Y, Z, A, B
Human Body Model
Note 1: All currents into the device are positive; all currents out of the device are negative. All
voltages are referred to device ground unless otherwise noted.
Note 2: ΔVOD and ΔVOC are the changes in VOD and VOC, respectively, when the DI input changes
state.
Note 3: Maximum current level applies to peak current just prior to foldback-current limiting;
minimum current level applies during current limiting.
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UM488/UM491
Switching Characteristics
(VCC = +5V ± 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V
and TA = +25°C.)
Parameter
Symbol
Test Conditions
Min
Typ Max Unit
tDPLH
10
30
30
60
60
Figures
5
and
7
,
=
RDIFF
100pF
=
54Ω,
Driver Input-to-Output
ns
CL1
=
CL2
tDPHL
10
Figures
5
and
7
,
=
RDIFF
100pF
=
54Ω,
54Ω,
Driver Output Skew
| tDPLH - tDPHL |
tDSKEW
5
10
25
ns
ns
CL1
=
CL2
Figures
5
and
7
,
=
RDIFF
100pF
=
tDR, tDF
fMAX
Driver Rise or Fall Time
Maximum Data Rate
5
15
CL1
=
CL2
2.5
Mbps
Figures
Figures
6
6
and
S2 closed
8
, CL
=
=
100pF,
Driver Enable to Output
High
tDZH
40
70
ns
and , CL
8
100pF,
15pF,
15pF,
tDZL
tDLZ
tDHZ
Driver Enable to Output Low
40
40
40
70
70
70
ns
ns
ns
S1 closed
and , CL
S1 closed
and , CL
S2 closed
Figures 9 and 11;
Figures
Figures
6
8
=
Driver Disable Time from
Low
6
8
=
Driver Disable Time from
High
tRPLH
tRPHL
,
V
2.0V;
15ns
|
|
≥
≤
ID
Receiver Input to Output
20
90
13
20
150
ns
ns
ns
rise and fall time of VID
| tRPLH - tRPHL | Differential
Receiver Skew
Figures 9 and 11;
rise and fall time of VID
V
2.0V;
15ns
|
|
≥
≤
ID
tRSKD
Figures
Figures
4
4
and 10, CL
S1 closed
=
100pF,
Receiver Enable to Output
Low
tRZL
tRZH
tRLZ
tRHZ
tSHDN
50
and 10, CL
S2 closed
=
=
=
100pF,
100pF,
100pF,
Receiver Enable to Output
High
20
20
50
50
ns
ns
Figures 4 and 10, CL
S1 closed
Receiver Disable Time from
Low
Figures
4
and 10, CL
S2 closed
Receiver Disable Time from
High
20
200
40
50
ns
ns
ns
Time to Shutdown
(Note
4
)
50
600
100
Figures
Figures
6
and
S2 closed
8
, CL
=
=
=
=
15pF,
Driver Enable from
Shutdown to Output High
tDZH(SHDN)
6
and , CL
S1 closed
8
15pF,
Driver Enable from
Shutdown to Output Low
tDZL(SHDN)
tRZH(SHDN)
tRZL(SHDN)
40
100
1000
1000
ns
ns
ns
Receiver Enable from
Shutdown- to-Output High
Figures
Figures
4
and 10, CL
S2 closed
100pF,
100pF,
300
300
Receiver Enable from
Shutdown- to-Output Low
4
and 10, CL
S1 closed
_______
Note 4: The device is put into shutdown by bringing R E high and DE low. If the enable inputs are in
this state for less than 50ns, the device is guaranteed not to enter shutdown. If the enable inputs are in
this state for at least 600ns, the device is guaranteed to have entered shutdown.
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UM488/UM491
Typical Operating Characteristics
+5V, TA +25°C, unless otherwise noted.)
(VCC
=
=
No Load Supply Current vs.
Temperature
Output Current vs. Receiver Output High
Voltage
400
70
60
50
40
30
20
10
0
375
350
325
300
275
250
225
200
RE=L,DE=H
-60 -40 -20
0
20
40
60
80 100
0
1
2
3
4
5
6
Output High Voltage (V)
Temperature(℃)
Receiver Output High Voltage vs.
Temperature
Output Current vs. Receiver Output Low
Voltage
70
60
50
40
30
20
10
0
5
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
4.1
4
IRO=8mA
0
1
2
3
4
5
6
-60
-40
-20
0
20
40
60
80
100
Output Low Voltage (V)
Temperature(℃)
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UM488/UM491
Typical Operating Characteristics (Continued)
+5V, TA +25°C, unless otherwise noted.)
(VCC
=
=
Driver Differential Output Voltage vs.
Temperature
Receiver Output Low Voltage vs.
Temperature
3
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2
0.4
IRO=8mA
RT=54ohm
0.35
0.3
0.25
0.2
0.15
0.1
-60 -40 -20
0
20
40
60
80
100
-60
-40
-20
0
20
40
60
80
100
Temperature(℃)
Temperature(℃)
Driver Output Current vs. Differential
Output Voltage
100
10
1
0.1
0
1
2
3
4
5
6
Differential Output Voltage (V)
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UM488/UM491
Pin Description
Pin Number
Symbol
Function
UM488
-
UM491
1
NC
RO
Not Connected
________
Receiver Output. When R E is low and if A - B ≥-50mV, RO
2
2
will be high; if A - B ≤ -200mV, RO will be low.
______
Receiver Output Enable. Drive RE low to enable RO; RO is
_______
______
______
-
3
RE
high impedance when RE is high. Drive RE high and DE
low to enter low-power shutdown mode.
Driver Output Enable. Drive DE high to enable driver outputs.
______
DE
DI
-
4
5
These outputs are high impedance when DE is low. Drive RE
high and DE low to enter low-power shutdown mode.
Driver Input. With DE high, a low on DI forces non-inverting
output low and inverting output high. Similarly, a high on DI
forces non-inverting output high and inverting output low.
3
GND
GND
NC
Y
4
4
-
6
7
Ground
Ground
8
Not Connected
5
6
7
8
-
9
Non-inverting Driver Output
Inverting Driver Output
Inverting Receiver Input
Non-inverting Receiver Input
Not Connected
Z
10
11
12
13
14
B
A
NC
VCC
Positive Supply 4.75V ≤
V
CC
≤ 5.25V
1
Functions Tables
TRANSMITTING
INPUTS
OUTPUTS
______
DE
DI
Z
Y
RE
X
X
0
1
1
0
0
1
0
X
X
0
1
1
0
High-Z
High-Z
1
Shutdown
RECEIVING
INPUTS
OUTPUT
______
DE
A-B
RO
RE
0
0
0
1
1
X
X
X
1
≥-0.05V
≤-0.2V
Open/Short
X
1
0
1
High-Z
Shutdown
0
X
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UM488/UM491
Typical Operating Circuit
DE
VCC RE
VCC
14
4
Y
9
5
Rt
D
DI
R
RO
DI
10
Z
12
11
A
2
Rt
RO
NC
R
D
1,8,13
B
3
6,7
GND
DE
RE GND
Figure 1: UM491 pin configuration and typical full-duplex operating circuit
A
Y
120ohm
120ohm
120ohm
120ohm
RO
DI
R
D
RE
DE
B
Z
Z
B
DE
RE
RO
R
D
DI
Y
A
Y
Z B
A
Y
Z B
A
R
R
D
D
DI
DI
DERERO
DERERO
Figure 2: Typical Full-Duplex RS-422 Network
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UM488/UM491
Detailed Description
The UM488/UM491 high-speed transceivers for RS-422 communication contain one driver and
one receiver. The device features fail-safe circuitry, which guarantees a logic-high receiver output
when the receiver inputs are open or shorted, or when they are connected to a terminated
transmission line with all drivers disabled.
The UM488/UM491 offer higher driver output slew-rate limits, allowing transmit speeds up to
2.5Mbps.
The UM488/UM491 is full-duplex transceiver. It operates from a single +5V supply. Drivers are
output short-circuit current limited. Thermal shutdown circuitry protects drivers against excessive
power dissipation. When activated, the thermal shutdown circuitry places the driver outputs into a
high- impedance state.
Receiver Input Filtering
The receivers of the UM488/UM491 incorporate input filtering in addition to input hysteresis.
This filtering enhances noise immunity with differential signals that have very slow rise and fall
times. Receiver propagation delay increases by 20% due to this filtering.
Fail-Safe
The UM488/UM491 guarantees a logic-high receiver output when the receiver inputs are shorted
or open, or when they are connected to a terminated transmission line with all drivers disabled.
This is done by setting the receiver threshold between -50mV and -200mV. If the differential
receiver input voltage (A-B) is greater than or equal to -50mV, RO is logic high. If A-B is less
than or equal to -200mV, RO is logic low. In the case of a terminated bus with all transmitters
disabled, the receiver’s differential input voltage is pulled to 0V by the termination. With the
receiver thresholds of the UM488/UM491, this results in a logic high with a 50mV minimum
noise margin. Unlike previous fail-safe devices, the -50mV to -200mV threshold complies with
the ±200mV EIA/TIA-422 standard.
±15kV ESD Protection
As with all Union devices, ESD-protection structures are incorporated on all pins to protect
against electrostatic discharges encountered during handling and assembly. The driver outputs and
receiver inputs of the UM488/UM491 have extra protection against static electricity. Union’s
engineers have developed state-of-the-art structures to protect these pins against ESD of ±15kV
without damage.
The ESD-protected pins are tested with reference to the ground pin in a powered-down condition.
They are tested to ±15kV using the Human Body Model.
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UM488/UM491
Test Circuit
Y
1K
Test Point
+
Receive
Output
R
R
VCC
S1
CRL
VOD
15pF
1K
VOC
S2
Z
Figure 3. Driver DC Test Load
Figure 4. Receiver Enable/Disable Timing Test Load
3V
VCC
DE
500ohm
Output
Under
Test
CL1
S1
S2
Y
Z
RDIFF
DI
+
VOD2
CL
CL2
Figure 5. Driver Timing Test Circuit
Figure 6. Driver Enable and Disable Timing Test Load
5V
1.5V
1.5V
5V
0V
1.5V
1.5V
tDPHL
DE 0V
tDPLH
DI
Y,Z
VOL
tDZL(SHDN), tDZL
1/2VO
tDLZ
Z
2.3V Output Normally Low
VO
VOL+0.5V
VOH-0.5V
Y
1/2VO
Output Normally High
2.3V
Y,Z
0
VDIFF=V(Y)-V(Z)
90％
VO
0
90％
10％
10％
tDZH(SHDN), tDZH
tDHZ
VDIFF
tDR
－VO
tSKEW=tDPLH-tDPHL
tDF
Figure 7. Driver Propagation Delays
Figure 8. Driver Enable and Disable Times
5V
1.5V
1.5V
RE
0V
VCC
RO
VOH
VOL
RO
tRZL(SHDN), tRZL
tRLZ
1.5V
1.5V
OUTPUT
1.5V Output Normally Low
tRPHL
VOL+0.5V
tRPLH
1V
A
B
Output Normally High
1.5V
INPUT
-1V
VOH-0.5V
0
tRZH(SHDN), tRZH
tRHZ
Figure 9. Receiver Propagation Delays
Figure 10. Receiver Enable and Disable Times
A
120ohm
RO
RE
DATA IN
R
B
B
Receiver
Output
DE
ATE
R
VD
A
Z
120ohm
DI
D
DATA OUT
Y
Figure 11. Receiver Propagation Delay Test Circuit
Figure 12: Line Repeater
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UM488/UM491
Applications Information
256 Transceivers on the Bus
The standard RS-422 receiver input impedance is 12kΩ (one-unit load), and the standard driver
can drive up to 32 unit loads. The UM491 has a 1/8-unit-load receiver input impedance (96kΩ),
allowing up to 256 transceivers to be connected in parallel on one communication line. Any
combination of these devices and/or other RS-422 transceivers with a total of 32 unit loads or less
can be connected to the line.
Reduced EMI and Reflections
The UM488/UM491 is slew-rate limited, minimizing EMI and reducing reflections caused by
improperly terminated cables. It’s high-frequency harmonic components are much lower in
amplitude, and the potential for EMI is significantly reduced.
In general, a transmitter’s rise time relates directly to the length of an unterminated stub, which
can be driven with only minor waveform reflections. The following equation expresses this
relationship conservatively:
Length = tRISE / (10 × 1.5ns/ft)
where tRISE is the transmitter’s rise time.
Low-Power Shutdown Mode (UM491)
_____
Low-power shutdown mode is initiated by bringing both RE high and DE low. In shutdown, the
_____
devices typically draw only 1nA of supply current. RE and DE may be driven simultaneously;
_____
the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If
the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown.
Enable times t
and t
in the Switching Characteristics tables assume the part was not in a
ZH
ZL
low-power shutdown state. Enable times tZH(SHDN) and tZL(SHDN) assume the parts were shut down.
It takes drivers and receivers longer to become enabled from low-power shutdown mode (tZH(SHDN)
,
tZH(SHDN)) than from driver/receiver-disable mode (tZH, tZL).
Driver Output Protection
Two mechanisms prevent excessive output current and power dissipation caused by faults or by
bus contention. The first, a foldback current limit on the output stage, provides immediate
protection against short circuits over the whole common-mode voltage range. The second, a ther-
mal shutdown circuit, forces the driver outputs into a high-impedance state if the die temperature
becomes excessive.
Line Length vs. Data Rate
The RS-422 standard covers line lengths up to 4000 feet. For line lengths greater than 4000 feet,
use the repeater application shown in Figure 12.
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UM488/UM491
Package Information
UM488EESA SOP8
Outline Drawing
c
D
DIMENSIONS
MILLIMETERS
INCHES
Min Max
Symbol
Min
1.350
0.100
1.350
0.33
Max
1.750
0.250
1.550
0.51
A
A1
A2
b
c
D
E
0.053 0.069
0.004 0.010
0.053 0.061
0.013 0.020
0.006 0.010
0.185 0.200
0.150 0.157
0.228 0.244
0.050 (BSC)
1
2
θ
e
0.170
4.700
3.800
5.800
0.250
5.100
4.000
6.200
Top View
End View
E1
e
1.270 (BSC)
b
L
θ
0.400
0°
1.270
8°
0.016 0.050
Side View
0°
8°
Land Pattern
NOTES:
1. Compound dimension: 4.90×3.90；
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
1.27
0.50
4. The layout is just for reference.
Tape and Reel Orientation
________________________________________________________________________
http://www.union-ic.com Rev.05 Dec.2014 13/17
UM488/UM491
UM488EEPA DIP8
Outline Drawing
DIMENSIONS
MILLIMETERS
INCHES
Symbol
Min
-
Max
5.08
-
Min
Max
0.200
-
A
A1
A2
A3
b
b1
C
D
D1
E
E1
e
eA
eB
L
-
D1
0.38
3.18
1.40
0.41
1.14
0.20
8.84
0.13
7.62
6.10
2.54
7.62
-
0.015
0.125
0.055
0.016
0.045
0.008
0.348
0.005
0.300
0.240
0.100
0.300
-
E
E1
4.45
2.03
0.56
1.65
0.30
9.91
2.03
8.26
7.87
-
0.175
0.080
0.022
0.065
0.012
0.390
0.080
0.325
0.310
-
eA
eB
C
D
e
b1
b
-
-
10.16
3.81
0.400
0.150
2.92
0.115
Tape and Reel Orientation
________________________________________________________________________
http://www.union-ic.com Rev.05 Dec.2014 14/17
UM488/UM491
UM491EESE SOP14
Outline Drawing
DIMENSIONS
MILLIMETERS
INCHES
Min Max
Symbol
Min
Max
1.750
0.250
1.650
0.750
0.490
0.250
8.730
6.200
4.000
A
A1
A2
A3
b
c
D
E
E1
e
1.350
0.100
1.250
0.550
0.360
0.170
8.530
5.800
3.800
0.053 0.069
0.004 0.010
0.050 0.066
0.022 0.030
0.014 0.020
0.006 0.010
0.341 0.349
0.228 0.244
0.152 0.160
0.050BSC
D
L2
INDEX Ø0.8±0.1 DEP0.2±0.1
θ2
θ1
e
b
c
0.25
M
1.270BSC
θ3
L
0.450
0.800
0.018 0.032
0.042REF
0.010BSC
L1
L2
θ1
θ2
θ3
θ4
1.04REF
0.250BSC
6°
6°
5°
5°
0.10
θ4
10°
10°
9°
6°
6°
5°
5°
10°
10°
9°
9°
9°
Land Pattern
0.50
NOTES:
1. Compound dimension: 8.63×3.90 ;
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
1.27
4. The layout is just for reference.
Tape and Reel Orientation
________________________________________________________________________
http://www.union-ic.com Rev.05 Dec.2014 15/17
UM488/UM491
UM491EEPE DIP14
Outline Drawing
DIMENSIONS
MILLIMETERS
INCHES
Min Max
Symbol
Min
-
Max
5.08
-
D1
A
A1
-
0.200
-
E
0.38
3.18
1.40
0.41
1.14
0.20
18.67
0.13
7.62
6.10
2.54
7.62
-
0.015
E1
A2
A3
b
b1
C
D
D1
E
E1
e
eA
eB
L
4.45
2.03
0.56
1.65
0.30
19.43
2.03
8.26
7.87
-
0.125 0.175
0.055 0.080
0.016 0.022
0.045 0.065
0.008 0.012
0.735 0.765
0.005 0.080
0.300 0.325
0.240 0.310
eA
eB
C
D
e
b1
b
0.100
0.300
-
-
-
-
10.16
3.81
0.400
2.92
0.115 0.150
Tape and Reel Orientation
________________________________________________________________________
http://www.union-ic.com Rev.05 Dec.2014 16/17
UM488/UM491
IMPORTANT NOTICE
The information in this document has been carefully reviewed and is believed to be
accurate. Nonetheless, this document is subject to change without notice. Union assumes
no responsibility for any inaccuracies that may be contained in this document, and makes
no commitment to update or to keep current the contained information, or to notify a
person or organization of any update. Union reserves the right to make changes, at any
time, in order to improve reliability, function or design and to attempt to supply the best
product possible.
Union Semiconductor, Inc
Add: Unit 606, No.570 Shengxia Road, Shanghai 201210
Tel: 021-51093966
Fax: 021-51026018
Website: www.union-ic.com
________________________________________________________________________
http://www.union-ic.com Rev.05 Dec.2014
17/17
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