DS3695TN/NOPB

Overview

The DS3695TN/NOPB is a multipoint RS485/RS422 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 transmission rates up to 10 Mb/s and features driver propagation delays as low as 15 ns with typical skew of 2 ns. It provides a bus common mode range from -7V to +12V, allowing for significant ground differences between devices. The component includes thermal shutdown protection and high impedance states during power-off or tri-state conditions. It is housed in an 8-pin PDIP package and is rated for industrial operating temperatures ranging from -40°C to +85°C.

Feature Summary

• Meets EIA standard RS485 for multipoint bus transmission and is compatible with RS-422 transceivers/repeaters.
• Features TRI-STATE capability for both driver and receiver outputs over the entire common mode range.
• Includes thermal shutdown protection that forces driver outputs into a high-impedance state upon excessive power dissipation.
• Provides combined impedance of driver output and receiver input less than one RS485 unit load.

Applications

• Multipoint data transmission systems requiring extended common mode range.
• Industrial communication networks utilizing RS485 or RS422 protocols.
• Bus repeater applications where thermal fault reporting is required.

Procurement Notes

Verify the specific ordering suffix 'T' confirms the industrial temperature grade (-40°C to +85°C) and PDIP packaging. Confirm the 'NOPB' suffix indicates lead-free/RoHS compliance status. Check current availability status as this part may be designated as LIFEBUY or OBSOLETE. Ensure the application environment does not exceed the absolute maximum ratings for supply voltage or input currents.

Selection Notes

Select this component when designing multipoint bus systems requiring robust performance across wide ground potential differences. The DS3695TN/NOPB is suitable for environments demanding thermal fault detection via the TS pin. Consider the 10 Mb/s data rate limit and the 32-unit load capacity when determining network topology. Verify that the 5V supply voltage aligns with the system power architecture.

Part Context

The DS3695TN/NOPB belongs to the DS3695 family of multipoint RS485/RS422 transceivers. This series includes variants such as the DS3695N (commercial temp), DS3696 (with TS pin), and DS3697 (repeater). The 'T' suffix specifically denotes the industrial temperature extension compared to the standard commercial grade parts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.