SN75451BDRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN75451BDRG4 is a dual peripheral driver manufactured by Texas Instruments, designed for high-current and high-speed switching applications. It operates within a supply voltage range of 4.75V to 5.25V and dissipates up to 725mW of power. The device features two independent channels with open-collector outputs capable of sinking 300mA and sourcing 100µA. It utilizes an 8-pin Small Outline Integrated Circuit (SOIC) package with a width of 3.90mm. The component supports surface-mount installation and functions reliably across an ambient temperature range of 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Dual-channel architecture providing independent control for high-current peripheral loads
• Open-collector output configuration enabling flexible interfacing with various logic families
• TTL-compatible inputs with diode clamping to simplify circuit design and protect against transient voltages
• Latch-up immunity ensures reliable operation under high current conditions without performance degradation

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed logic buffering in computer systems
• Relay and lamp driving circuits
• MOSFET gate drive applications
• Memory driver interfaces

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix G4 indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the SOIC-8 package dimensions match the target PCB footprint requirements. Ensure the operating temperature range aligns with the environmental conditions of the final assembly. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when dual-channel high-current sinking capability is required for peripheral devices. The open-collector output allows connection to external pull-up resistors for voltage levels different from the logic supply. Consider the thermal dissipation limits of the SOIC package when designing for continuous high-current loads. Verify compatibility with TTL logic levels for input signals.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN7545xB series of dual peripheral drivers from Texas Instruments. It serves as a functional replacement for older SN75450 and SN75450A series components while offering improved speed and latch-up protection. The series is engineered for robust performance in digital systems requiring direct drive of electromechanical or high-power loads.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN75451BDR is listed as a manufacturer-recommended alternative.