
SN55138, SN75138
QUADRUPLE BUS TRANSCEIVERS
SLLS079B – SEPTEMBER 1973 – REVISED MAY 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, V
CC
(see Note 1)
Input voltage, V
I
Driver off-state output voltage
Low-level output current into the driver output
Continuous total dissipation
Operating free-air temperature range, T
A
: SN55138
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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SN75138
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or W package
Case temperature for 60 seconds, T
C
: FK package
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package
5.5 V
7 V
150 mA
See Dissipation Rating Table
–55
°
C to 125
°
C
0
°
C to 70
°
C
–65
°
C to 150
°
C
. . . . . . . . . . . . .
260
°
C
260
°
C
300
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to both ground terminals connected together.
DISSIPATION RATING TABLE
PACKAGE
TA
≤
25
°
C
POWER RATING
DERATING FACTOR
ABOVE TA = 25
°
C
7.6 mW/
°
C
11.0 mW/
°
C
11.0 mW/
°
C
9.2 mW/
°
C
TA = 70
°
C
POWER RATING
TA = 125
°
C
POWER RATING
D
950 mW
608 mW
—
FK
J
1375 mW
880 mW
275 mW
1375 mW
880 mW
275 mW
N
1150 mW
736 mW
—
W
1000 mW
8.0 mW/
°
C
640 mW
200 mW
In the FK and J packages, the SN55138 chip is alloy mounted.
recommended operating conditions
SN55138
NOM
SN75138
NOM
UNIT
MIN
MAX
MIN
MAX
Supply voltage, VCC
4.5
5.5
4.75
5
5.25
V
High level input voltage VIH
High-level input voltage, VIH
Driver or strobe
2
2
V
Receiver
3.2
2.9
Low level input voltage VIL
Low-level input voltage, VIL
Driver or strobe
0.8
0.8
V
Receiver
1.5
1.8
High-level output current, IOH
Receiver output
–400
–400
μ
A
Low level output current IOL
Low-level output current, IOL
Driver output
100
100
mA
Receiver output
16
16
Operating free-air temperature, TA
–55
125
0
70
°
C