SN75177B, SN75178B
DIFFERENTIAL BUS REPEATERS
SLLS002C – D2606, JULY 1985 – REVISED FEBRUARY 1993
logic symbols
†
SN75177B
EN
A
B
T
3
8
7
2
logic diagrams (positive logic)
SN75177B
EN
3
8
7
2 Receiver
Driver
5
6
Y
Z
EN
5
6
A
Y
Z
T
B
SN75178B
EN
A
B
T
3
8
7
2
EN
EN
5
6
A
Y
Z
T
B
SN75178B
3
8
7
2 Receiver
Driver
5
6
Y
Z
† 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
VCC
Req
TYPICAL OF ALL DRIVER OUTPUTS
VCC
Input
Output
Driver input: Req = 3 kΩ NOM
Enable inputs: Req = 8 kΩ NOM
EQUIVALENT OF EACH RECEIVER INPUT
VCC
GND
TYPICAL OF RECEIVER OUTPUT
VCC
85
Ω
NOM
960
Ω
NOM
16.8 kΩ 960
Ω
NOM
NOM
Input
Output
2–2
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