SN75176BP differential bus transceivers are integrated circuits designed for bidirectional
data communication on multipoint bus transmission lines. They are designed for balanced transmission lines
and meet ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A and ITU Recommendations V.11 and X.27.
SN75176BP combine a 3-state differential line driver and a differential input line receiver,
both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low
enables, respectively, that can be connected together externally to function as a direction control. The driver
differential outputs and the receiver differential inputs are connected internally to form differential input/output
(I/O) bus ports that are designed to offer minimum loading to the bus when the driver is disabled or VCC = 0.
These ports feature wide positive and negative common-mode voltage ranges, making the device suitable for
party-line applications.

The driver is designed for up to 60 mA of sink or source current. The driver features positive and negative current
limiting and thermal shutdown for protection from line-fault conditions. Thermal shutdown is designed to occur
at a junction temperature of approximately 150°C. The receiver features a minimum input impedance of 12 kΩ,
an input sensitivity of ±200 mV, and a typical input hysteresis of 50 mV.

Bidirectional Transceivers
Meet or Exceed the Requirements of ANSI
Standards TIA/EIA-422-B and TIA/EIA-485-A
and ITU Recommendations V.11 and X.27
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
3-State Driver and Receiver Outputs
Individual Driver and Receiver Enables
Wide Positive and Negative Input/Output
Bus Voltage Ranges
Driver Output Capability . . . ±60 mA Max
Thermal Shutdown Protection
Driver Positive and Negative Current
Receiver Input Impedance . . . 12 kΩ Min
Receiver Input Sensitivity . . . ±200 mV
Receiver Input Hysteresis . . . 50 mV Typ
Operate From Single 5-V Supply

SN75176BP is a commonly used RS-485 transceiver, which is mainly used in industrial control, automation, computer networks and other fields for serial data transmission. Its specific uses include:

1Industrial control: using RS-485 protocol to transmit data in industrial automation systems, as a communication transceiver in control systems

2Computer networks: transmitting data in LANs and WANs

3Security surveillance systems: transmitting video data in closed-circuit television surveillance systems

4Instrumentation and test equipment: transmitting signals in instruments and measuring equipment

5Other fields: intelligent transportation systems, intelligent energy management systems, industrial 4.0 and other fields

It can be used to transmit digital signals at high speed and over long distances and is a universal standard.

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