DS75176BTN/NOPB

Overview

The DS75176BTN/NOPB is a multipoint RS-485/RS-422 transceiver manufactured by Texas Instruments. It operates from a single +5V supply with a voltage range of 4.75V to 5.25V and supports data rates up to 10 Mb/s. The device features a bus common mode range of -7V to +12V, allowing for ±7V ground differences between devices. It includes thermal shutdown protection and maintains high impedance to the bus 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 -40°C to +85°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.
• Includes thermal shutdown circuitry that forces driver outputs into a high impedance state during excessive power dissipation.
• Maintains high impedance to the bus when the driver is disabled or VCC is zero, permitting unused devices to be powered down.

Applications

• Multipoint data transmission on long bus lines in noisy environments
• Industrial control systems requiring extended common mode voltage ranges
• Building automation and security access control networks

Procurement Notes

Verify the LIFEBUY status of this component before finalizing designs, as Texas Instruments has announced discontinuation. Confirm the specific ordering suffix matches the required package type and temperature rating. Ensure compliance with RoHS directives and check for availability through authorized distributors during the lifetime-buy period.

Selection Notes

Select the DS75176BTN/NOPB variant specifically for applications requiring through-hole mounting and industrial temperature ratings. Compare against the SN75176B series for pin compatibility if transitioning from older designs. Verify that the system's power supply remains stable within the 4.75V to 5.25V range to ensure proper logic threshold performance.

Part Context

This part belongs to the DS75176BT family of differential bus transceivers designed for bidirectional data communication. It is pin-out compatible with the DS3695/A and SN75176A/B series, facilitating direct replacements in existing hardware architectures without requiring schematic modifications.

Replacement Considerations

The SN75176BT is a pin-compatible alternative within the same functional family. Designers should verify that the replacement meets the specific -40°C to +85°C operating temperature requirements of the original application.

FAQ

What is the maximum data rate supported by the DS75176BTN/NOPB?

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

How does the device handle fault situations like bus contention?

Thermal shutdown protection forces the driver outputs into a high impedance state to limit power dissipation during shorts or excessive loading.

Is the device compatible with RS-422 standards?

Yes, the transceiver is designed to meet EIA RS-485 requirements and is fully compatible with RS-422 standards.