SN74ALVCH245PW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALVCH245PW 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 includes active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors. Latch-up performance exceeds 100 mA per JESD 78, Class II. It is housed in a 20-pin TSSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports asynchronous communication between data buses across a wide voltage range
• Includes active bus-hold circuitry to maintain valid logic states on undriven inputs
• Provides high latch-up immunity exceeding standard requirements

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication between data buses
• Memory and memory control applications
• High-density data acquisition and transmission systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum to confirm the exact package type and moisture sensitivity level. Ensure the component status is listed as Active Production before procurement. Confirm that the RoHS compliance and lead finish specifications match the project requirements. Cross-reference the part marking code to validate authenticity upon receipt.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring bidirectional data transfer between buses operating within the 1.65-V to 3.6-V range. The integrated bus-hold feature simplifies design by removing the need for external resistors on unused inputs. Consider the 3.4-ns propagation delay for timing-critical paths and ensure the 20-pin TSSOP package fits the available PCB footprint constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the ALVCH series of low-voltage CMOS logic components designed for high-speed digital applications. It serves as a standard interface solution for connecting microprocessors, memory devices, and other logic circuits. The octal configuration allows for efficient handling of parallel data streams in compact electronic systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALVCH245PWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the bus-hold circuitry function?

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 recommended method to ensure high-impedance state during power up or down?

The OE input should be tied to VCC through a pullup resistor to ensure the high-impedance state during power up or power down.