SN75177B, SN75178B
DIFFERENTIAL BUS REPEATERS
SLLS002C – D2606, JULY 1985 – REVISED FEBRUARY 1993
†
logic symbols
logic diagrams (positive logic)
SN75177B
SN75177B
3
EN
3
8
5
6
EN
A
EN
A
7
Y
Z
8
7
2
5
6
Y
Z
B
B
Receiver
Driver
2
T
T
SN75178B
SN75178B
3
EN
3
8
7
2
8
7
5
6
EN
A
EN
A
B
Y
Z
5
6
Y
Z
B
Receiver
Driver
2
T
T
†
These symbols are in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT
TYPICAL OF ALL DRIVER OUTPUTS
V
CC
V
CC
R
eq
Input
Output
Driver input: R = 3 kΩ NOM
eq
GND
Enable inputs: R = 8 kΩ NOM
eq
TYPICAL OF RECEIVER OUTPUT
EQUIVALENT OF EACH RECEIVER INPUT
V
CC
V
CC
85 Ω
NOM
960 Ω
NOM
Input
16.8 kΩ
NOM
960 Ω
NOM
Output
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
