SN74ALVCH16334DGGR

Overview

The SN74ALVCH16334DGGR is a 16-bit universal bus driver with 3-state outputs, part of the Texas Instruments Widebus family. It operates on a single VCC supply ranging from 1.65 V to 3.6 V and utilizes an EPIC submicron CMOS process. The device features active bus-hold circuitry on data inputs to eliminate external pullup/pulldown resistors. It includes equivalent 26-Ω series resistors at the output port to reduce overshoot and undershoot without requiring external components. Designed for SMD/SMT installation in a TSSOP-48 package, it supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrated latch/flip-flop functionality controlled by latch-enable (LE) and clock (CLK) inputs for data storage
• Active bus-hold circuitry maintains valid logic levels on unused or floating data inputs
• Built-in equivalent 26-Ω series resistors minimize signal overshoot and undershoot
• High ESD protection performance exceeding MIL-STD-883 standards

Applications

• Buffered DIMM applications compliant with JEDEC specifications
• System memory buffering and interface circuits
• High-density data routing in portable and industrial electronics

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific DGGR suffix corresponds to the TSSOP-48 tape-and-reel packaging format. Ensure design compliance with RoHS directives and check for any lifecycle status changes such as Obsolete or Not Recommended for New Designs before finalizing procurement plans.

Selection Notes

Select this component when a 16-bit buffered solution with integrated latching capability is required. It is suitable for designs needing voltage translation between 1.65-V and 3.6-V domains. Consider the internal series resistance for impedance matching needs. Verify that the TSSOP-48 footprint aligns with PCB layout constraints and thermal management requirements.

Part Context

This device belongs to the SN74ALVCH16xx series of universal bus drivers. It shares functional similarities with other members like the SN74ALVCH162334 but offers specific pinout and feature configurations tailored for high-performance bus applications. The Widebus family emphasizes low power consumption and high-speed operation within the ALVCH logic standard.

Replacement Considerations

Check for SN74ALVCH162334DGGR as a potential alternative within the same family. Verify pin compatibility and electrical characteristics against current datasheet revisions before substitution.