SN74ALVC162831DBBR

Overview

The SN74ALVC162831DBBR is a 1-bit to 4-bit address register/driver with 3-state outputs, operating from 1.65 V to 3.6 V. It features a maximum propagation delay of 4.3 ns at 3.3 V and ±12-mA output drive capability. The device includes equivalent 26-Ω series resistors in the output ports to reduce overshoot and undershoot without requiring external components. It provides latch-up performance exceeding 250 mA per JESD 17 and ESD protection exceeding 2000-V human-body model standards.

Feature Summary

• Operates as a buffer or register based on the logic level of the select input
• Includes internal equivalent 26-Ω series resistors to minimize signal overshoot and undershoot
• Features independent control for two groups of nine outputs via separate output-enable inputs

Applications

• Driving single address buses to multiple memory locations
• System buffering applications requiring controlled signal transitions
• Register mode data storage for address bus management

Procurement Notes

Verify the specific package marking ALVC162831 and orderable part number SN74ALVC162831DBBR against the manufacturer's current production status. Confirm that the DBB TVSOP package dimensions and tape-and-reel specifications align with the design requirements. Ensure compliance with RoHS and lead-free material declarations as specified in the ordering information section of the datasheet.

Selection Notes

Select this component when designing systems requiring a 1-to-4 bit address expansion with integrated damping resistors. The wide voltage range supports low-power operation down to 1.65 V. Consider the dual output-enable structure if independent control of output groups is necessary for the specific circuit topology.

Part Context

This device belongs to the Texas Instruments Widebus family of logic products. It is designed for high-speed digital applications where signal integrity is critical due to the built-in series resistance. The component serves as a bridge between standard logic levels and memory interfaces requiring buffered address lines.

Replacement Considerations

Consult the manufacturer's official replacement guide for direct substitutes. Verify pin compatibility and electrical characteristics before substituting with other members of the ALVC logic family.

FAQ

How does the device switch between buffer and register modes?

The device operates in buffer mode when the SEL input is logic high, allowing outputs to follow inputs. It switches to register mode when SEL is logic low, storing data on the positive transition of the CLK input.

What is the purpose of the internal series resistors?

The outputs include equivalent 26-Ω series resistors designed to reduce overshoot and undershoot, eliminating the need for external resistors in most applications.