SN75451BD

Buffers, Drivers, Receivers, Transceivers Overview

The SN75451BD is a dual peripheral driver designed for high-current, high-speed switching in TTL logic systems. It operates on a single supply voltage ranging from 4.75 V to 5.25 V with a maximum power dissipation of 725 mW. The device features two independent channels with open-collector outputs capable of handling up to 300 mA and voltages up to 30 V. It utilizes an 8-pin SOIC package and functions within a temperature range of 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• High-current output capability rated up to 300 mA
• Diode-clamped inputs for simplified circuit design and TTL compatibility
• Latch-up protection ensures reliability under high current conditions
• Open-collector outputs provide flexibility for various load types

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed logic buffering
• Relay driving circuits
• Lighting driver applications
• MOSFET gate driving

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm pinout, packaging dimensions, and electrical tolerances. Ensure the selected variant matches the required operating temperature range and power dissipation limits for the target application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing TTL logic with high-voltage or high-current loads requiring open-collector outputs. Consider the thermal management requirements associated with the 725 mW power dissipation limit in the SOIC-8 package. Verify that the input voltage levels are compatible with the system's logic family.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN7545xB series of dual peripheral drivers. It serves as a functional replacement for older SN75450 and SN75450A series components while offering improved latch-up immunity. The SN75451B specifically implements AND gate logic internally connected to NPN output transistors.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN75451BDRE4 is listed as a manufacturer-recommended alternative.