74ALVCH16373GRDR

Overview

The SN74ALVCH16373GRDR is a 16-bit transparent D-type latch with 3-state outputs from the Texas Instruments Widebus family. It operates from 1.65 V to 3.6 V and features a maximum propagation delay of 3.6 ns at 3.3 V. The device provides ±24-mA output drive capability and includes bus hold on data inputs to eliminate external pullup or pulldown resistors. Latch-up performance exceeds 250 mA per JESD 17, and ESD protection exceeds 2000-V human-body model and 200-V machine model standards.

Feature Summary

• Provides 16-bit transparent latching functionality with separate control for two 8-bit sections
• Features active bus-hold circuitry on data inputs to maintain valid logic states without external components
• Supports high-impedance output state via buffered OE input to prevent bus loading during power transitions
• Delivers robust latch-up immunity and enhanced electrostatic discharge protection ratings

Applications

• Implementing buffer registers in digital systems
• Configuring I/O ports for mixed-voltage applications
• Serving as bidirectional bus drivers
• Functioning as working registers in memory architectures

Procurement Notes

Verify the specific ordering suffix GRDR corresponds to the Microstar Junior package type before procurement. Confirm that the component status aligns with current design requirements, as availability classifications may change. Ensure compatibility with standard surface-mount assembly processes for the designated package dimensions.

Selection Notes

Select this component when low voltage operation between 1.65 V and 3.6 V is required alongside high-speed data latching capabilities. The inclusion of bus hold simplifies board layout by removing the need for passive pull components. Consider the specific pinout and thermal characteristics of the Microstar Junior package for integration into dense PCB designs.

Part Context

This device belongs to the Texas Instruments Widebus family, designed for high-density bus-oriented applications. It functions as two independent 8-bit latches or a single 16-bit latch. The architecture supports mixed-mode signal operations, allowing interfacing between different voltage domains while maintaining signal integrity through controlled output impedance.

Replacement Considerations

The SN74ALVCH16373GRDR is listed as obsolete in official documentation. Designers should evaluate alternative packages within the same logic family, such as the DGGR (TSSOP) or DL (SSOP), which remain active. Verify pin compatibility and electrical specifications when transitioning to these replacement part numbers.