SN74LS623N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS623N is an octal bus transceiver from the Texas Instruments SN74LS series, designed for asynchronous two-way communication between data buses. It features a 20-pin PDIP package and operates with TTL input and output levels. The device supports bidirectional data transfer controlled by direction and enable signals. Key electrical characteristics include a low-level output current of 24 mA and a high-level output current of -15 mA. It functions within a supply voltage range of 4.75 V to 5.25 V and operates across a temperature range of 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Bidirectional octal bus transceiver for asynchronous two-way communication
• Local bus-latch capability for improved system flexibility
• Hysteresis at bus inputs to improve noise margins

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous data bus communication systems
• Industrial control applications requiring noise immunity
• Memory interface circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix (e.g., N) against the datasheet to confirm package type and operating temperature range. Ensure the supply voltage matches the 4.75 V to 5.25 V requirement. Confirm that the TTL logic levels are compatible with the driving and receiving circuits in the target design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal width is required for bidirectional data transfer. Consider the SN74ABT623N if lower propagation delay or wider voltage tolerance is needed. Verify that the through-hole PDIP-20 package fits the PCB layout constraints. Check if local bus-latch functionality is necessary for the specific application timing requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LS family of standard logic devices. It is functionally similar to other octal bus transceivers but distinguished by its LS speed and power characteristics. The 'N' suffix indicates a plastic dual-in-line package. It serves as a bridge between microprocessors and peripheral devices in legacy or cost-sensitive designs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74LS623N.A is a documented variant within the same product line. Cross-reference pinouts and electrical specifications before substitution. Ensure thermal and mechanical compatibility if replacing with non-TI equivalents.