SN75177B, SN75178B
DIFFERENTIAL BUS REPEATERS
SLLS002C – D2606, JULY 1985 – REVISED FEBRUARY 1993 SN75177B . D OR P PACKAGE
(TOP VIEW) Meets EIA Standards RS-422-A and RS-485
and CCITT Recommendations V.11 and X.27
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
3-State Outputs
Bus Voltage Range . – 7 V to 12 V
Positive and Negative Current Limiting
Driver Output Capability . 60 mA Max
Driver Thermal Shutdown Protection
Receiver Input Impedance . 12 kΩ Min
Receiver Input Sensitivity . В± 200 mV
Receiver Input Hysteresis . 50 mV Typ
Operates From Single 5-V Supply
Low Power Requirements VCC
T
EN
GND 1 8 2 7 3 6 4 5 A
B
Z
Y SN75178B . P PACKAGE …
