SN74HCT245AN

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT245AN is an octal bus transceiver manufactured by Texas Instruments, belonging to the HCT logic series. It features tri-state outputs and supports bidirectional data transmission controlled by a direction signal. The device operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-compatible input levels while providing CMOS output levels. Packaged in a 20-pin DIP format, it is designed for through-hole mounting and functions reliably across an industrial temperature range from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Bidirectional octal data transfer capability with direction control
• TTL-compatible inputs ensuring interoperability with standard logic families
• Tri-state outputs allowing effective bus line isolation when disabled

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address and data bus driving applications
• Clock drivers and buffered oscillators
• Bus-oriented communications systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'AN' against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure the ordering part number matches the required pin configuration and RoHS compliance status for your manufacturing process. Cross-reference the date code and lot information to guarantee component authenticity and traceability during procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between 5V CMOS devices and legacy TTL logic due to its HCT input compatibility. It is suitable for designs requiring eight-bit parallel data transfer with high noise immunity. Consider the PDIP-20 package constraints regarding board space and thermal dissipation compared to surface-mount alternatives like SOIC or TSSOP variants.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the broader SN74HC/HCT245 family of octal bus transceivers. While sharing core functional architecture with HC and AHC series counterparts, the HCT variant specifically targets applications demanding direct compatibility with transistor-transistor logic (TTL) input thresholds without requiring external level shifting circuits.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include SN74HCT245D, SN74HCT245N, and SN74HCT245PW. Verify that alternative packages maintain identical pinouts and electrical characteristics before implementation.