SN74ALVCH16270DL

Universal Bus Functions Overview

The SN74ALVCH16270DL 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 narrow high-speed buses and wide lower-frequency buses. The device features active bus-hold circuitry on data inputs, eliminating the need for external pullup or pulldown resistors. It utilizes an EPIC submicron process and includes ESD protection exceeding 2000 V per MIL-STD-883. The DL package provides a 56-pin SSOP configuration.

Universal Bus Functions Feature Summary

• Provides synchronous data exchange between two ports using internal registers triggered by clock transitions.
• Features active bus-hold circuitry on data inputs to maintain valid logic levels without external components.
• Includes a two-stage pipeline in the A-to-1B path and a single storage register in the A-to-2B path for sequential word presentation.

Universal Bus Functions Applications

• Transferring data from narrow high-speed buses to wide lower-frequency buses
• Synchronous data exchange applications requiring 12-bit to 24-bit conversion
• Bus architecture designs needing registered bus exchanging capabilities

Universal Bus Functions Procurement Notes

Verify the specific ordering suffix (e.g., 'DL' for tube packaging) against the manufacturer's current product availability status. Confirm that the required voltage range of 1.65 V to 3.6 V aligns with the target system design. Ensure control inputs are properly terminated to VCC or GND to guarantee correct device operation during power-up sequences.

Universal Bus Functions Selection Notes

Select this component when application requirements involve converting 12-bit data streams into 24-bit formats with synchronous timing constraints. Consider the 56-pin SSOP package dimensions for PCB layout compatibility. Evaluate the EPIC CMOS process benefits regarding power consumption and switching speeds relative to alternative logic families within the same voltage operating range.

Universal Bus Functions Part Context

This device belongs to the Texas Instruments Widebus family, engineered for high-density bus interfacing tasks. It represents a specialized solution within the ALVCH logic series, focusing on registered bus exchange functions rather than standard buffering or driving. The component addresses specific architectural needs for managing data width variations in complex digital systems.

Universal Bus Functions Replacement Considerations

Consult official substitution guides for equivalent registered bus exchangers within the ALVCH or ABT families. Verify pinout compatibility and electrical characteristics before replacing existing inventory. Ensure any substitute part maintains the required 1.65-V to 3.6-V operating voltage range and 56-pin package form factor.

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, removing the necessity 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 CLK input.