DS75176BN

Overview

The DS75176BN/NOPB is a multipoint RS-485/RS-422 transceiver manufactured by Texas Instruments. It operates on a single +5V supply with a voltage range of 4.75V to 5.25V. The device supports data rates up to 10Mb/s and features a bus common mode range from -7V to +12V, allowing for ±7V ground differences between devices. It includes thermal shutdown protection and high impedance states when powered off or disabled. The component is housed in an 8-pin PDIP package and is rated for operation within a temperature range of 0°C to +70°C.

Feature Summary

• Supports multipoint communication on balanced transmission lines compliant with EIA RS-485 and RS-422 standards.
• Features tri-state outputs over the entire common mode range to prevent bus contention and allow unused devices to be powered down.
• Includes thermal shutdown circuitry that forces driver outputs to a high impedance state during excessive power dissipation events.

Applications

• Multipoint data transmission on noisy industrial buses
• Balanced line communication systems requiring extended common mode ranges
• Network interfaces compatible with ANSI TIA/EIA-485-A standards

Procurement Notes

Verify the specific ordering suffix to confirm the package type and temperature rating. The 'BN' designation indicates a PDIP package with commercial temperature limits. Confirm RoHS compliance status through official manufacturer documentation before procurement.

Selection Notes

Select this component for applications requiring half-duplex communication over long distances with significant ground potential differences. Ensure the design accommodates the 0°C to +70°C operating range. Verify that the system load does not exceed the specified unit load limits for reliable signal integrity.

Part Context

This part belongs to the DS75176B family of differential transceivers designed for robust serial communication. It serves as a standard interface solution for connecting microcontrollers or processors to RS-485 networks in environments where electrical noise and ground shifts are prevalent.

Replacement Considerations

The SN75176B is a pin-compatible alternative within the same product family. Verify if the industrial temperature grade (SN75176BR) is required instead of the commercial grade offered by the DS75176BN.

FAQ

What is the maximum data rate supported by the DS75176BN?

The device supports data transmission rates up to 10 Mb/s.

How does the device handle fault conditions on the bus?

Thermal shutdown protection detects excessive power dissipation caused by shorts or bus contention and forces the driver outputs into a high impedance state.

Can unused devices on the bus be powered down?

Yes, the high impedance characteristic of the receiver input and driver output allows unused devices to be powered down while maintaining bus connectivity.