SN74ALVCH16270DLR

Universal Bus Functions Overview

The SN74ALVCH16270DLR is a 12-bit to 24-bit registered bus exchanger with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation. It facilitates synchronous data exchange between two ports, transferring data from narrow high-speed buses to wide lower-frequency buses. Data is stored in internal registers on the low-to-high transition of the clock input when appropriate CLKEN inputs are low. The device features active bus-hold circuitry and ESD protection exceeding 2000 V per MIL-STD-883.

Universal Bus Functions Feature Summary

• Provides synchronous data exchange between two ports using internal registers triggered by clock transitions.
• Features active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs without external resistors.
• Includes registered control terminals to synchronize bus-direction changes with the clock signal.

Universal Bus Functions Applications

• Transferring data from narrow high-speed buses to wide lower-frequency buses
• Synchronous data exchange applications requiring registered bus direction control

Universal Bus Functions Procurement Notes

Verify the specific ordering suffix 'DLR' corresponds to the tape-and-reel packaging configuration rather than tube packaging. Confirm that the component status remains active production as indicated in the package addendum. Ensure compatibility with the specified SSOP-56 footprint during procurement planning.

Universal Bus Functions Selection Notes

Select this component when designing systems requiring registered bus exchange capabilities between varying bus widths. The device supports a supply voltage range of 1.65 V to 3.6 V, making it suitable for low-voltage logic interfaces. Consider the 56-pin SSOP package constraints and the requirement for registered control signals for proper synchronization.

Universal Bus Functions Part Context

This component belongs to the Texas Instruments Widebus family and utilizes the EPIC submicron process technology. It is part of the SN74ALVCH series, which provides enhanced performance for low-voltage CMOS applications. The device is characterized for operation across an industrial temperature range.

Universal Bus Functions Replacement Considerations

The SN74ALVCH16270DGGR is a direct replacement option available in a TSSOP package. Verify pinout compatibility and ensure the alternative package type meets the thermal and mechanical requirements of the target design.

Universal Bus Functions FAQ

How does the device handle unused or floating data inputs?

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level, eliminating the need for external pullup or pulldown resistors.

What is the mechanism for controlling data flow direction?

Data flow is controlled by the active-low output enables (OEA, OEB). Control terminals are registered to synchronize bus-direction changes with the clock signal.