SN74LS645-1N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS645-1N is an octal bus transceiver from the Texas Instruments 74LS series, housed in a 20-pin PDIP package. It features non-inverting logic with three-state outputs and operates within a supply voltage range of 4.75 V to 5.25 V. The device supports TTL input levels and provides TTL output levels. It is designed for bidirectional data communication on bus-oriented systems.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus transceiver architecture providing eight independent channels
• Non-inverting logic function with true output polarity
• Three-state outputs enabling direct system bus connections
• TTL-compatible input and output voltage levels

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data communication on bus-oriented systems
• Memory and memory interface control applications
• Signal buffering between different logic families

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix matches the required package type (PDIP) and lead finish (NIPDAU). Confirm RoHS compliance status as indicated by the 'Yes' designation in official documentation. Ensure the procurement channel sources parts directly from authorized distributors or manufacturers to guarantee authenticity and adherence to standard warranty terms.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal, non-inverting bus transceiver with three-state outputs is required. It is suitable for designs needing TTL-compatible I/O levels and bidirectional data transfer capabilities. Consider alternative packages such as SOIC if surface-mount technology is preferred over through-hole mounting.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN54LS640 through SN54LS645 family of octal bus transceivers. The SN74LS645-1N specifically denotes the commercial grade version with non-inverting functionality and three-state outputs. It shares functional similarities with other members of the LS series but differs in output configuration and polarity compared to open-collector or inverting variants.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS645N serves as a direct pin-to-pin replacement offering identical electrical characteristics and functionality within the same PDIP package format.