DS3668N/NOPB

Overview

The DS3668N/NOPB is a quad telephone relay driver integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.50 V and supports output voltages up to 70 V. The device features four independent drivers with a maximum output current of 500 mA per channel. It is housed in a 16-pin Plastic Dual In-Line Package (PDIP) and is designed for through-hole mounting. The component functions reliably across an operating temperature range of -40°C to +125°C, ensuring stability in demanding environments.

Feature Summary

• Integrates four independent high-voltage relay drivers into a single package
• Supports direct interface with standard logic inputs for simplified control
• Provides robust output capability suitable for driving telephone line relays

Applications

• Telephone exchange systems
• PBX equipment
• Telecom switching modules

Procurement Notes

Verify the specific suffix NOPB indicates lead-free compliance and RoHS adherence when sourcing. Confirm the PDIP-16 package dimensions match the target PCB footprint. Ensure the supplier provides official datasheets to validate the electrical characteristics against the design requirements before finalizing procurement.

Selection Notes

Select this component when a quad configuration is required for telephone relay control. The wide operating temperature range makes it suitable for industrial telecom applications. Verify that the 500 mA output current meets the load requirements of the connected relays. Consider the PDIP package constraints if space is limited compared to surface-mount alternatives.

Part Context

This part belongs to the DS36xx series of telephone interface components from Texas Instruments. It complements other devices like the DS3680N, which offers similar functionality but may differ in pin count or specific drive capabilities. The series is designed to meet the rigorous demands of telecommunications infrastructure.

Replacement Considerations

The SN75437ANE is a documented alternative within the same family. Compare the operating temperature range (-40°C to +125°C for DS3668N vs 0°C to +70°C for SN75437ANE) and output current specifications to ensure compatibility with the existing design constraints.