SN74ALVCH16282DBBR

Overview

The SN74ALVCH16282DBBR is an 18-bit to 36-bit registered bus exchanger designed for 1.65-V to 3.6-V VCC operation. It facilitates synchronous data exchange between two ports, storing data in internal registers on the low-to-high transition of the clock input. The device supports bidirectional transfer with a select input determining data width for B-to-A transfers and providing a two-stage pipeline for A-to-B transfers. It features active bus-hold circuitry on data inputs and operates within a temperature range of –40°C to 85°C.

Feature Summary

• Synchronous data exchange between narrow high-speed buses and wide lower-frequency buses
• Active bus-hold circuitry eliminates the need for external pullup or pulldown resistors
• Two-stage pipeline provided in the 1B path for A-to-B data transfer

Applications

• Transferring data from narrow high-speed buses to wide lower-frequency buses
• Low-voltage (3.3-V) VCC system applications requiring registered bus exchange
• Bidirectional data routing with synchronized direction changes

Procurement Notes

Verify the specific package designation DBBR corresponds to the Thin Very Small-Outline Package configuration required for your design. Confirm that the ordering suffix matches the tape and reel requirements, noting that the DBBR package abbreviation converts to GR for order entry. Ensure compatibility with the 1.65-V to 3.6-V supply voltage range and check for any revisions in the latest datasheet regarding pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when designing systems that require bridging buses of different widths and frequencies using registered interfaces. The device is suitable for applications needing independent control over data flow direction and width via the SEL and DIR inputs. Consider the EPIC submicron process technology for enhanced performance and the inclusion of bus-hold features to simplify input handling without additional passive components.

Part Context

This device belongs to Texas Instruments' Widebus family, utilizing the EPIC Enhanced-Performance Implanted CMOS submicron process. It is characterized for robust ESD protection exceeding 2000 V per MIL-STD-883 and latch-up performance exceeding 250 mA per JESD 17. The registered bus exchanger architecture ensures stable data storage and transfer across varying bus speeds.

Replacement Considerations

No public confirmed substitute part numbers are available in the source material.