SN75451BDRE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN75451BDRE4 is a dual high-current peripheral driver manufactured by Texas Instruments, designed for TTL logic systems. It operates within a supply voltage range of 4.75 V to 5.25 V and supports output currents up to 300 mA with voltages reaching 30 V. The device features open-collector outputs and is housed in an 8-pin SOIC package. It functions as a dual AND gate-based peripheral driver, ensuring latch-up immunity at 20 V after conducting 300 mA. The component operates within a temperature range of 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Dual high-current peripheral drivers compatible with TTL logic systems
• Open-collector outputs providing circuit flexibility for various applications
• Diode-clamped inputs to simplify circuit design and prevent latch-up

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed logic buffering
• Relay driving
• Lighting control circuits
• MOSFET gate driving
• Memory addressing drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'RE4' against current manufacturer documentation, as it may indicate RoHS compliance or lead-free status rather than functional changes. Confirm availability status, as distributors may list this part as obsolete or discontinued with recommended alternatives like the standard BDR variant. Ensure the 8-SOIC package dimensions match the target PCB footprint requirements before finalizing procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring robust peripheral interfacing with standard TTL logic levels. The dual configuration allows for efficient management of two independent high-current loads within a compact surface-mount package. Consider the open-collector output topology for applications necessitating external pull-up resistors or voltage level shifting beyond the standard 5 V supply rail.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx545xB series of peripheral drivers, which are functionally interchangeable with earlier SN75450 and SN75450A series components. The SN75451B specifically implements dual AND gate logic internally connected to NPN output transistors. It serves as a direct replacement for legacy drivers while offering improved speed and guaranteed latch-up protection under high-current conditions.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN75451BDR is identified as a manufacturer-recommended alternative. Verify if the standard tape-and-reel packaging of the BDR variant meets production requirements compared to the RE4 specification.