74ALVCH16373TX

Overview

The Fairchild Semiconductor 74ALVCH16373TX is a 16-bit transparent D-type latch featuring 3-state outputs, designed for bus-oriented applications within the ALVCH logic series. It operates with a supply voltage range of 1.65 V to 3.6 V and utilizes a TSSOP-48 surface-mount package. The device provides non-inverting true outputs and supports mixed-mode signal operations, allowing interfacing with 5 V devices despite lower supply voltages. Key electrical characteristics include propagation delays of 4.3 ns at 2.7 V and 3.6 ns at 3.3 V, with a maximum static current of 40 uA. Output drive capabilities include -24 mA high-level output current. The component is rated for operation between -40°C and +85°C.

Feature Summary

• Provides 16-bit data storage with separate control logic for each byte in bus-oriented applications.
• Features 3-state outputs that enter a high impedance state during power-up and power-down cycles.
• Supports mixed-mode signal operations by accepting 5 V inputs while operating at lower supply voltages.

Applications

• Bus-oriented data storage systems
• Mixed 3.3 V and 5 V logic interface circuits
• High impedance glitch-free bus loading applications

Procurement Notes

Verify the specific manufacturer designation as Fairchild Semiconductor has undergone corporate restructuring and its semiconductor assets were acquired by onsemi. Confirm whether the part number refers to legacy stock or current onsemi production. Ensure the datasheet matches the exact suffix requirements for the TSSOP-48 package and verify RoHS compliance status for the specific manufacturing batch before procurement.

Selection Notes

Select this component when a 16-bit transparent latch with 3-state outputs is required for low-voltage digital systems. It is suitable for designs needing compatibility with both 3.3 V and 5 V logic levels due to its 5 V tolerant inputs. Consider the TSSOP-48 package constraints and the ALVCH series performance specifications regarding propagation delay and power consumption relative to other logic families.

Part Context

This component belongs to the 74ALVCH series of advanced low-voltage CMOS logic devices. The series is characterized by high speed and low power consumption, making it appropriate for portable and battery-operated applications. The 74ALVCH16373 specifically addresses the need for wide bus widths in low-voltage environments, offering a solution for data latching in modern digital communication interfaces.

Replacement Considerations

Public confirmed substitute part numbers include SN74ALVCH16373 from Texas Instruments and MC74ALVCH16373 from onsemi. These alternatives share identical logical functions and pinouts but may differ in specific electrical parameters or packaging options. Verify compatibility with existing board layouts and thermal requirements when substituting.