SN74ALVCH16501DLR

Overview

The SN74ALVCH16501DLR is an 18-bit universal bus transceiver from the Texas Instruments ALVCH family, housed in a 56-pin SSOP package. It operates within a supply voltage range of 1.65 V to 3.6 V and supports data rates up to 150 MHz. The device features independent output-enable controls for each direction (OEAB active high, OEBA active low) and combines D-type latches with flip-flops for transparent, latched, or clocked operation. Key electrical parameters include a maximum propagation delay of 3.9 ns at 3.3 V and ±24 mA output drive capability.

Feature Summary

• Combines D-type latches and flip-flops to support transparent, latched, and clocked modes
• Features active bus-hold circuitry on data inputs to maintain valid logic states without external resistors
• Provides independent output-enable control for each data flow direction
• Includes ESD protection exceeding 2000-V human-body model standards

Applications

• High-density memory buffer applications
• Clock drivers and buffered clocks
• Multiplexer selectors
• Slaved converters

Procurement Notes

Verify that the ordering suffix 'DLR' corresponds to the tape-and-reel packaging format and the SSOP-56 physical footprint. Confirm the component meets RoHS compliance requirements and matches the specified -40°C to +85°C operating temperature range for your specific design constraints.

Selection Notes

Select this component when an 18-bit wide data path requires versatile mode switching between transparent and registered operations. The ALVCH technology ensures compatibility with low-voltage systems while maintaining robust drive strength. Ensure the application utilizes the dedicated latch-enable and clock inputs to manage data timing effectively.

Part Context

This device belongs to the Texas Instruments Widebus family of universal bus transceivers. It is designed to interface between microprocessors and peripheral devices, offering flexibility in data handling through its unique combination of latch and flip-flop architectures within a single integrated circuit.

Replacement Considerations

Direct pin-compatible alternatives include the SN74ALVCH16501DGGR (TSSOP package) and the SN74ALVCH16501KR (VFBGA package). Verify that any substitute maintains the same 18-bit width, voltage range, and functional logic table.