SN74ALVCH16646DGG

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALVCH16646DGG is a 16-bit bus transceiver and register with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation. It functions as two independent 8-bit transceivers or one 16-bit unit. Data on the A or B bus is clocked into registers on the low-to-high transition of the appropriate clock input (CLKAB or CLKBA). The device features output-enable (OE) and direction-control (DIR) inputs to manage transceiver operations. Select-control (SAB and SBA) inputs multiplex stored and real-time data while eliminating decoding glitches during transitions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Active bus-hold circuitry maintains unused or floating data inputs at valid logic levels without external resistors
• Select-control inputs enable multiplexing between stored and real-time data without typical decoding glitches
• EPIC submicron CMOS process provides enhanced performance and high ESD protection exceeding 2000 V per MIL-STD-883

Buffers, Drivers, Receivers, Transceivers Applications

• Bus management in systems requiring registered data transfer
• Multiplexed transmission of stored versus real-time data
• Isolation mode applications where data storage occurs independently of output states

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package suffix DGG corresponds to the Thin Shrink Small-Outline Package (TSSOP) variant. Confirm RoHS compliance and lead finish details via the manufacturer's current packaging addendum. Ensure operating temperature range requirements align with the -40 °C to 85 °C specification before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring simultaneous bus isolation and data registration within a single 1.65-V to 3.6-V supply domain. The dual 8-bit configuration allows flexible partitioning of 16-bit buses. Consider the active bus-hold feature if minimizing external pull-up or pull-down components is a design priority.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments Widebus family, utilizing EPIC technology for improved speed and power efficiency compared to standard CMOS processes. The DGG package designation specifically identifies the 56-pin Thin Shrink Small-Outline variant, distinguishing it from the standard SSOP (DL) or TVSOP (DGV) options available within the same functional family.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALVCH16646DGGR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle data transitions between stored and real-time modes?

The select-control (SAB and SBA) inputs allow multiplexing between stored and real-time data. The internal circuitry is designed to eliminate the decoding glitches typically associated with multiplexer transitions.

What is the function of the active bus-hold circuitry?

Active bus-hold circuitry holds unused or floating data inputs at a valid logic level, thereby eliminating the need for external pullup or pulldown resistors on the data lines.