DS75176BTM

Overview

The DS75176BTM is a multipoint RS-485/RS-422 transceiver designed for high-speed differential bus communication. It operates on a single +5V supply and features TRI-STATE outputs with an extended common mode range of -7V to +12V, allowing up to ±7V ground difference between devices. The device supports data rates up to 10 Mbps with typical driver propagation delays of 22 ns. It includes thermal shutdown protection and short-circuit current limiting. The component is housed in an 8-pin SOIC package and is rated for operation over the -40°C to +85°C temperature range.

Feature Summary

• Extended common mode range supporting -7V to +12V bus voltages
• TRI-STATE capability for bus contention handling
• Thermal shutdown protection against excessive power dissipation

Applications

• Multipoint data transmission on balanced transmission lines
• Industrial communication networks requiring RS-485 compliance
• Systems operating with significant ground potential differences

Procurement Notes

Verify the specific suffix 'TM' indicates the industrial temperature grade (-40°C to +85°C) versus the commercial 'B' variant (0°C to +70°C). Confirm the package type matches the required PCB footprint. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure ESD precautions are observed during handling due to limited built-in protection.

Selection Notes

Select this part when an extended common mode voltage range is necessary to accommodate large ground shifts between nodes. Compare against the SN75176A/B for pin compatibility or the DS3695/A for similar functionality. Verify that the 10 Mbps speed meets system requirements. Consider the SOIC package dimensions for board space constraints compared to through-hole alternatives.

Part Context

This component belongs to the DS75176B family of multipoint transceivers from Texas Instruments. It is functionally compatible with the SN75176A/B and DS3695/A pinouts. The 'BTM' designation specifically denotes the industrial temperature range and surface-mount SOIC packaging. It serves as a standard interface solution for half-duplex serial communication buses.

Replacement Considerations

SN75176BD: Commercial grade equivalent in SOIC package. DS75176BM/NOPB: Commercial grade version with identical electrical characteristics but lower temperature rating.