SN74ALVCH245NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALVCH245NSR 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 standards.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports asynchronous communication between data buses with direction control via DIR input
• Active bus-hold circuitry maintains valid logic states on unused or undriven inputs
• Output-enable (OE) input isolates buses when disabled
• High latch-up immunity exceeding 100 mA per JESD 78, Class II

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication between data buses
• Memory and memory mapping
• Clock drivers
• Bidirectional bus-oriented architectures

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix NSR corresponds to the NS package type and tape-and-reel carrier configuration as listed in the official TI ordering information. Confirm that the component meets RoHS compliance requirements and matches the specified operating temperature range of -40°C to 85°C before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring low-voltage operation between 1.65 V and 3.6 V with high-speed data transfer capabilities. The 3.4 ns propagation delay and ±24-mA drive strength make it suitable for driving moderate loads. Ensure the application utilizes the bus-hold feature to simplify input handling without external resistors.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALVCH245 family of octal bus transceivers. It is designed for 1.65-V to 3.6-V VCC operation and is available in multiple package options including SOIC, TSSOP, and TVSOP. The device is intended for bidirectional data transmission controlled by a direction signal.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALVCH245DW

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

The device incorporates active bus-hold circuitry on the data inputs, which holds unused or undriven inputs at a valid logic state without requiring external pullup or pulldown resistors.

What is the function of the OE input?

The output-enable (OE) input disables the device, effectively isolating the buses. To ensure a high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor.