SN74ALVCH16260DGR

Overview

The SN74ALVCH16260DGR is a 12-bit to 24-bit multiplexed D-type latch with 3-state outputs from the Texas Instruments Widebus family. It operates on a 1.65-V to 3.6-V supply voltage and utilizes an EPIC submicron CMOS process. The device features three 12-bit I/O ports (A, 1B, and 2B) for address or data transfer. Propagation delay ranges from 1 ns to 5.4 ns depending on voltage and direction. It includes active bus-hold circuitry and ESD protection exceeding 2000 V per MIL-STD-883. Characterized for operation between -40 °C and 85 °C.

Feature Summary

• Multiplexes two separate 12-bit data paths onto or demultiplexes them from a single 24-bit path using internal storage latches.
• Incorporates active bus-hold circuitry on data inputs to maintain valid logic levels without external pullup or pulldown resistors.
• Provides high ESD protection performance that exceeds standard requirements for robust signal integrity.
• Supports bank control in the A-to-B direction through dedicated output-enable control signals.

Applications

• Microprocessor bus-interface applications requiring address and data information multiplexing
• Demultiplexing address and data information in system architectures
• Memory-interleaving applications

Procurement Notes

Verify the specific ordering suffix 'DGR' corresponds to the TSSOP (DGG) package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level ratings against current manufacturer documentation prior to procurement. Ensure the selected component matches the required operating temperature range specifications.

Selection Notes

Select this component when designing systems requiring the consolidation of two independent 12-bit data streams into a single 24-bit interface. It is suitable for low-voltage environments utilizing 1.65-V to 3.6-V power supplies. Consider its multiplexing capabilities for applications needing efficient pin count reduction in data transfer scenarios.

Part Context

This device belongs to the Texas Instruments Widebus family, designed for high-density data handling. It is manufactured using the Enhanced-Performance Implanted CMOS (EPIC) submicron process technology. The part is available in plastic shrink small-outline (DL) and thin shrink small-outline (DGG) packages.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.

FAQ

How does the device manage unused or floating data inputs?

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level, eliminating the need for external pullup or pulldown resistors.

What is the function of the latch-enable inputs?

The latch-enable inputs (LE1B, LE2B, LEA1B, LEA2B) control data storage. When high, the latch is transparent; when low, the data present at the inputs is latched until the input returns high.