SN74ALVCH245PWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALVCH245PWR is an octal bus transceiver with 3-state outputs manufactured by Texas Instruments. It operates from a supply voltage range of 1.65 V to 3.6 V and features a maximum propagation delay of 3.4 ns at 3.3 V. The device provides ±24-mA output drive capability at 3.3 V and incorporates active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors. It supports asynchronous communication between data buses, allowing transmission from A to B or B to A based on the direction-control input.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports asynchronous bidirectional communication between data buses using direction control logic
• Incorporates active bus-hold circuitry on data inputs to maintain valid logic states without external components
• Provides high-impedance isolation via the output-enable input to effectively disconnect buses

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication between data buses
• Bus-oriented memory and cache systems
• High-density instrumentation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the component matches the specific SN74ALVCH245PWR designation within the ALVCH series. Confirm the package type corresponds to TSSOP (PW) as indicated by the suffix. Ensure the operating temperature range aligns with industrial requirements of -40°C to 85°C. Cross-reference the datasheet revision SCES119G for accurate electrical characteristics and absolute maximum ratings before integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when low-voltage operation between 1.65 V and 3.6 V is required alongside high-speed performance. The ALVCH series offers faster switching speeds compared to standard HC or LVC families. Consider the ±24-mA drive strength for direct bus driving applications. Verify compatibility with system logic levels and ensure adequate power supply decoupling for high-frequency transitions.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74ALVCH family of advanced low-voltage CMOS logic products. It is designed for high-speed applications requiring operation in the 1.65-V to 3.6-V range. The octal configuration allows for efficient management of wide data buses in compact surface-mount packages, specifically the TSSOP-20 form factor used in this variant.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALVCH245PW

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused or undriven inputs?

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What is the function of the OE input?

The output-enable (OE) input disables the device, placing the outputs in a high-impedance state to effectively isolate the buses.