SN74ALVCH162373GR

Overview

The SN74ALVCH162373GR is a 16-bit transparent D-type latch with 3-state outputs from the Texas Instruments Widebus family. It operates at supply voltages ranging from 1.65 V to 3.6 V and features active bus-hold circuitry on data inputs, eliminating the need for external pullup or pulldown resistors. The device includes equivalent 26-Ω series output resistors to reduce overshoot and undershoot. It can be configured as two 8-bit latches or one 16-bit latch. The component is housed in a 48-pin TSSOP (DGG) package.

Feature Summary

• Active bus-hold circuitry maintains valid logic states on unused or undriven data inputs without requiring external components.
• Integrated equivalent 26-Ω series output resistors minimize signal overshoot and undershoot during transitions.
• High-impedance state capability allows driving bus lines without interface or pullup components while retaining internal data.

Applications

• Implementing buffer registers
• Configuring I/O ports
• Utilizing bidirectional bus drivers
• Serving as working registers

Procurement Notes

Verify that the specific part number matches the required TSSOP-48 (DGG) package configuration. Confirm RoHS compliance status and lead finish specifications against current manufacturer documentation. Ensure the procurement channel provides original manufacturer packaging details consistent with tape and reel requirements for automated assembly processes.

Selection Notes

Select this component when designing systems requiring low-voltage operation between 1.65 V and 3.6 V. Consider its integrated bus-hold feature if external pullup or pulldown resistors are undesirable. Evaluate the 26-Ω series output resistance for signal integrity needs where overshoot reduction is critical. Verify compatibility with standard CMOS or LVTTL input levels across the specified voltage range.

Part Context

This device belongs to the Texas Instruments Widebus family of logic products. It is designed specifically for high-density applications requiring 16-bit data storage and transfer capabilities within a compact surface-mount footprint. The transparent latch architecture allows direct data flow when enabled, providing efficient bus management in complex digital circuits.

Replacement Considerations

SN74ALVCH162373DLR

FAQ

How does the device handle unused data inputs?

The SN74ALVCH162373GR incorporates active bus-hold circuitry that holds unused or undriven data inputs at a valid logic state, removing the necessity for external pullup or pulldown resistors.

What is the function of the internal series resistors?

The outputs include equivalent 26-Ω series resistors designed to reduce signal overshoot and undershoot, thereby improving signal integrity without requiring additional external components.