74ALVCH16600APA

Overview

The IDT74ALVCH16600APA is an 18-bit universal bus transceiver featuring bus hold inputs and 3-state outputs. It operates within a wide supply voltage range of 1.65 V to 3.6 V, utilizing CMOS technology for low power dissipation. The device supports independent control of data flow in each direction through dedicated output enable, latch enable, clock enable, and clock inputs. It includes I_OFF circuitry to prevent damaging backflow current during partial power-down applications.

Feature Summary

• Universal transceiver architecture with independent directional control
• Bus hold inputs on data lines for signal integrity
• I_OFF circuitry prevents backflow current during partial power-down
• Compatible with TTL logic levels at specified voltages

Applications

• High-density memory bus interfaces
• Microprocessor-to-peripheral communication links
• Partial power-down system architectures
• General-purpose bidirectional data buffering

Procurement Notes

Verify the specific package marking and manufacturer date code against official Renesas or IDT documentation to confirm authenticity. Ensure that the ordering suffix matches the required tape-and-reel or tube packaging configuration. Confirm compliance with RoHS directives and check for any recent product change notices affecting pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when an 18-bit bidirectional interface with latching capability is required. It is suitable for systems needing direct interface with TTL levels while operating at lower CMOS voltages. Consider the I_OFF feature if the design involves hot-swap scenarios or partial power-down states to protect downstream components from back-powering.

Part Context

This part belongs to the ALVCH series, designed for advanced low-voltage CMOS applications. It provides high-speed performance with reduced power consumption compared to older logic families. The 56-pin TSSOP package allows for compact board layouts in dense electronic designs requiring multiple bidirectional data paths.

Replacement Considerations

SN74ALVCH16600 by Texas Instruments offers a direct functional equivalent with identical pinout and specifications.