Datasheet
SN65176B, SN75176B
DIFFERENTIAL BUS TRANSCEIVERS
SLLS101B – JULY 1985 – REVISED JUNE 1999
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
schematics of inputs and outputs
Output
85 Ω
NOM
TYPICAL OF RECEIVER OUTPUT
Input/Output
Port
960 Ω
NOM
16.8 kΩ
NOM
TYPICAL OF A AND B I/O PORTS
Driver input: R
(eq)
= 3 kΩ NOM
Enable inputs: R
(eq
)= 8 kΩ NOM
R
(eq)
= equivalent resistor
R
(eq)
V
CC
EQUIVALENT OF EACH INPUT
V
CC
Input
960 Ω
NOM
V
CC
GND
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
(see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range at any bus terminal –10 V to 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enable input voltage, V
I
5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): D package 197°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P package 104°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°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.
NOTES: 1. All voltage values, except differential input/output bus voltage, are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
MIN TYP MAX UNIT
Supply voltage, V
CC
4.75 5 5.25 V
Voltage at any bus terminal (se
p
arately or common mode) V
I
or V
IC
12
V
Voltage
at
an
y
b
u
s
terminal
(separatel
y
or
common
mode)
,
V
I
or
V
IC
–7
V
High-level input voltage, V
IH
D, DE, and RE 2 V
Low-level input voltage, V
IL
D, DE, and RE 0.8 V
Differential input voltage, V
ID
(see Note 3) ±12 V
High level out
p
ut current I
OH
Driver –60 mA
High
-
le
v
el
o
u
tp
u
t
c
u
rrent
,
I
OH
Receiver –400 µA
Low level out
p
ut current I
OL
Driver 60
mA
Lo
w-
le
v
el
o
u
tp
u
t
c
u
rrent
,
I
OL
Receiver 8
mA
O
p
erating free air tem
p
erature T
A
SN65176B –40 105
°
C
Operating
free
-
air
temperat
u
re
,
T
A
SN75176B 0 70
°C
NOTE 3: Differential-input/output bus voltage is measured at the noninverting terminal A with respect to the inverting terminal B.