SN74ALVCHR16601LR

Overview

The SN74ALVCHR16601LR is an 18-bit universal bus transceiver from the Texas Instruments ALVCHR logic family. It operates within a supply voltage range of 1.65 V to 3.6 V and features 3-state outputs. The device integrates D-type latches and D-type flip-flops, combining latch and flip-flop functionality for flexible data handling. It utilizes a 56-pin TSSOP package and supports surface-mount installation. The component is rated for operation between -40°C and +85°C, with a maximum propagation delay of 6.3 ns and output currents of ±12 mA.

Feature Summary

• Combines D-type latches and D-type flip-flops for versatile bus interfacing
• Supports wide voltage operation from 1.65 V to 3.6 V
• Provides 18-bit bidirectional data transfer capability

Applications

• High-density memory buffer applications
• Clocking and data latch circuits
• General-purpose 18-bit bus transceivers

Procurement Notes

Verify the specific suffix 'LR' corresponds to the tape-and-reel packaging configuration when ordering. Confirm that the required operating temperature range aligns with the industrial specification limits. Ensure the design accommodates the 56-pin TSSOP footprint dimensions and thermal requirements during PCB layout.

Selection Notes

Select this component when an 18-bit width is required alongside mixed latch and flip-flop control. It is suitable for systems needing low-voltage operation down to 1.65 V. Consider the 6.3 ns propagation delay for timing constraints. Verify compatibility with 3-state bus architectures requiring high-impedance states.

Part Context

This part belongs to the SN74ALVCHR16601 series, which is part of the Widebus family. It shares functional similarities with other 18-bit transceivers but distinguishes itself through the integrated combination of latching and flipping elements. The LR suffix specifically denotes the reel packaging format used for automated assembly processes.

Replacement Considerations

The SN74ALVCHR16601GR is a pin-compatible alternative differing primarily in packaging type (tube versus reel). Other members of the ALVCHR family may offer similar electrical characteristics but might lack the specific combined latch/flip-flop architecture.