SN74ALVCH16600DLR

Overview

The SN74ALVCH16600DLR is an 18-bit universal bus transceiver with 3-state outputs manufactured by Texas Instruments. It operates from a supply voltage range of 1.65 V to 3.6 V and features a maximum propagation delay of 4 ns at 3.3 V. The device provides ±24 mA output drive current and utilizes active bus-hold circuitry on data inputs. It is housed in a 56-pin SSOP (DL) package and supports an operating free-air temperature range of -40°C to 85°C.

Feature Summary

• Combines D-type latches and D-type flip-flops for transparent, latched, clocked, or clock-enable operation
• Active bus-hold circuitry eliminates the need for external pullup/pulldown resistors
• Independent control of data flow direction via separate output-enable, latch-enable, and clock inputs

Applications

• High-speed data acquisition systems
• Clocking and buffering applications
• Bus-oriented memory architectures

Procurement Notes

Verify the specific ordering suffix 'DLR' corresponds to the tape-and-reel packaging configuration. Confirm that the component meets RoHS-3 compliance standards as specified in the manufacturer documentation. Ensure the selected package variant matches the required PCB footprint dimensions for the 56-pin SSOP form factor.

Selection Notes

Select this component when designing circuits requiring simultaneous transparent and registered data paths within a single package. The widebus family architecture allows flexible configuration of data flow modes. Verify that the system power supply remains within the 1.65 V to 3.6 V operational limits to ensure correct logic threshold performance.

Part Context

This device belongs to the Texas Instruments Widebus family of universal bus transceivers. It integrates both latching and flip-flop capabilities to support complex timing requirements in bidirectional data transfer scenarios. The SN74ALVCH16600 series is designed for low-voltage CMOS technologies providing high-density integration.

Replacement Considerations

SN74ALVCH16600DL

FAQ

How does the device handle unused or undriven inputs?

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What determines the data flow mode between ports A and B?

Data flow is controlled by the output-enable (OE), latch-enable (LE), and clock (CLK) inputs, allowing operation in transparent, latched, or clocked modes.