SN75451BP

Buffers, Drivers, Receivers, Transceivers Overview

The SN75451BP is a dual peripheral driver designed for TTL logic systems, featuring two independent drivers with open-collector outputs. It operates on a standard power supply voltage range of 4.75 V to 5.25 V and supports high-current switching up to 300 mA per output. The device utilizes a PDIP-8 package with through-hole mounting. Key electrical parameters include a maximum input voltage of 5.5 V, a maximum power dissipation of 1 W, and a maximum operating temperature of +70 °C. Delay times are specified at 8 ns for turn-on and 12 ns for turn-off.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• High-current capability rated for up to 300 mA output
• TTL-compatible inputs with diode clamping for circuit flexibility
• Latch-up immunity ensuring reliable operation under high-voltage conditions
• Open-collector outputs suitable for various load types

Buffers, Drivers, Receivers, Transceivers Applications

• Relay driving circuits
• Lighting control systems
• Power management interfaces
• Computer peripheral equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific manufacturer source, as the SN75451BP designation appears across multiple vendors including Texas Instruments and NXP. Confirm that the PDIP-8 package matches your board layout requirements. Ensure the component meets the required operating temperature range of 0 °C to +70 °C for your specific application environment before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing TTL logic with high-current loads requiring open-collector outputs. It serves as a functional replacement for older SN75450 series devices. Consider the thermal constraints of the PDIP-8 package given the 1 W power dissipation rating. Verify compatibility with the system's 5 V logic levels and ensure sufficient heat sinking if continuous high-current operation is expected.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx545xB family of dual peripheral drivers, which includes variants like the SN75452B (NAND) and SN75453B (OR). These components share similar electrical characteristics and pinouts but differ in their internal logic gates. The SN75451BP specifically implements AND gate functionality internally connected to NPN output transistors, distinguishing it from other logical configurations within the same series.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN75451BP is functionally interchangeable with the SN75450 and SN75450A series. For surface-mount applications, consider the SN75451BDR or SN75451BPS equivalents. Verify that any substitute maintains the same PDIP-8 package dimensions and electrical specifications to ensure direct compatibility.