SN74HCT245PW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT245PW is an octal bus transceiver manufactured by Texas Instruments, belonging to the HCT logic series. It features three-state outputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device provides bidirectional data transmission with non-inverting polarity across eight channels. Packaged in a 20-pin TSSOP format, it supports surface-mount installation. Key electrical characteristics include a maximum propagation delay of 30 ns at 4.5 V and output drive capabilities of ±6 mA. The component functions reliably within an operating temperature range of -40 °C to +85 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional octal data transfer between two buses using a single direction control signal.
• Features three-state outputs that isolate the bus when the device is disabled.
• Accepts TTL-compatible input levels while driving CMOS outputs for system interfacing.

Buffers, Drivers, Receivers, Transceivers Applications

• Mobile applications requiring low-power standard logic functionality
• Clock drivers and buffer circuits
• Memory bus architectures

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Texas Instruments or authorized distributors before integration. Confirm that the TSSOP-20 package dimensions match the target PCB footprint requirements. Ensure the supply voltage remains strictly within the 4.5 V to 5.5 V operational limits to maintain signal integrity and prevent device damage.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when TTL input compatibility is required alongside CMOS output performance in a single-supply 5 V environment. The HCT series offers faster switching speeds compared to legacy LS logic while maintaining pin-out compatibility. Consider the 30 ns propagation delay and ±6 mA drive strength against load capacitance requirements to ensure adequate signal timing margins.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HCT245 family of octal bus transceivers. It serves as a standard interface solution for connecting microprocessors, memory devices, and peripheral logic circuits. The HCT technology ensures compatibility with older TTL systems while providing improved noise immunity and speed suitable for modern embedded designs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HCT245PWR: Same functional specifications in a tape-and-reel packaging format instead of tube.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the input logic level compatibility of the SN74HCT245PW?

The device accepts TTL input levels, allowing it to interface directly with standard TTL logic sources.

How many independent channels does this transceiver provide?

The SN74HCT245PW contains eight independent bidirectional channels for data transfer.