SN75454BP

Buffers, Drivers, Receivers, Transceivers Overview

The SN75454BP is a dual high-speed peripheral driver manufactured by Texas Instruments, designed for TTL logic systems. It features two non-inverting inputs and open-collector outputs capable of sinking up to 300 mA. The device operates within a supply voltage range of 4.75 V to 5.25 V and has a propagation delay of 35 ns. It is housed in an 8-pin PDIP package with through-hole mounting. The component supports a maximum power dissipation of 1 W and functions reliably within an operating temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• High-current output capability allows direct driving of loads such as relays, lamps, and MOS devices without external transistors.
• Open-collector outputs provide flexibility for interfacing with various logic families and voltage levels.
• Diode-clamped inputs simplify circuit design by suppressing fast-ringing transients during switching.
• Latch-up free design ensures robust operation under high-voltage output conditions.

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed logic buffering in computer systems
• Relay and lamp drivers in industrial control panels
• Memory address and data bus drivers
• Peripheral interface circuits requiring high current sinking

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant, as SN75454B is available in both DIP and SOIC formats. Confirm RoHS compliance status for the specific batch, as older revisions may differ. Ensure the application circuit accounts for the open-collector nature of the outputs, which typically requires external pull-up resistors to define the high logic level. Check datasheet limits for thermal management given the 1 W power dissipation rating.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a dual-channel driver with significant sink current is required for TTL-compatible logic. It serves as a functional replacement for legacy SN75450 series devices. Consider the PDIP-8 package only if through-hole assembly is mandated by the PCB design. For surface-mount requirements, evaluate the SN75454BPSR counterpart instead. Verify that the load current does not exceed the 300 mA limit per channel to prevent device damage.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx545xB family of peripheral drivers from Texas Instruments. These components are engineered to replace earlier SN75450 and SN75450A series parts while maintaining identical speed characteristics. The SN75454B specifically implements NOR gate logic internally connected to NPN output transistors. This family is widely used in legacy and modern industrial applications requiring reliable high-current switching capabilities.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN75452BP is documented as a parameter-equivalent substitute within the same product family.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the logic function of the SN75454BP?

The SN75454BP contains two non-inverting buffers (NOR gates configured as buffers) with their outputs connected to NPN transistor bases.

Can the SN75454BP drive inductive loads directly?

Yes, it can drive loads like relays directly due to its 300 mA sink capability, but flyback diodes should be used across inductive loads to protect against voltage spikes.