SN74ALVCH16524DLR

Overview

The SN74ALVCH16524DLR is an 18-bit registered bus transceiver from the Texas Instruments Widebus family, designed for 1.65-V to 3.6-V VCC operation. It features a Universal Bus Transceiver (UBT) architecture combining D-type latches and flip-flops for transparent, latched, clocked, or clock-enable modes. The device provides a maximum propagation delay of 3.2 ns at 3.3 V and ±24-mA output drive capability. It includes active bus-hold circuitry on data inputs to eliminate external pullup/pulldown resistors.

Feature Summary

• Combines D-type latches and flip-flops to support transparent, latched, clocked, or clock-enable operations
• Features active bus-hold circuitry on data inputs to maintain valid logic states without external components
• Provides selectable B-to-A data transfer paths through either a single register or a four-stage pipeline

Applications

• High-speed parallel data buffering with synchronization capabilities
• System memory interface registration and data path control
• Complex digital logic designs requiring multi-stage pipeline processing

Procurement Notes

Verify that the specific orderable part number matches the required package type and temperature range. Confirm RoHS compliance and lead finish specifications against current manufacturing standards. Ensure all unused control inputs are properly terminated to VCC or GND during design validation to guarantee stable device operation.

Selection Notes

Select this component when an 18-bit width is required alongside flexible data storage modes. The UBT architecture allows designers to choose between simple buffering and complex pipelined transfers via the SEL input. Verify that the operating voltage range aligns with the system's power supply rails and that the high output drive current meets load requirements.

Part Context

This device belongs to the Texas Instruments ALVCH logic series, which supports low-voltage CMOS applications. It is part of the broader Widebus family, providing standardized interfaces for high-density digital systems. The DL suffix indicates a tape and reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

SN74ALVCH16524DL