SN74ALVCH16524DGGR

Overview

The SN74ALVCH16524DGGR is an 18-bit registered bus transceiver from the Texas Instruments Widebus family, housed in a 56-pin TSSOP package. It operates on a single supply voltage ranging from 1.65 V to 3.6 V and features 3-state outputs with ±24-mA drive capability at 3.3 V. The device supports data rates up to 150 MHz and achieves a maximum propagation delay of 3.2 ns at 3.3 V. It incorporates active bus-hold circuitry to maintain valid logic states without external resistors.

Feature Summary

• Combines D-type latches and flip-flops for transparent, latched, clocked, or clock-enable operation
• Features active bus-hold circuitry to eliminate the need for external pullup or pulldown resistors
• Provides latch-up performance exceeding 250 mA per JESD 17 standard

Applications

• High-speed parallel data transfer between buses
• Clock-domain crossing synchronization
• Buffering and registering wide data paths

Procurement Notes

Verify that the specific ordering suffix matches the required tape-and-reel packaging configuration. Confirm the operating temperature range aligns with system requirements. Ensure all unused control inputs are properly terminated to prevent undefined states during power transitions.

Selection Notes

Select this component when an 18-bit width is required for synchronous data transfers. Consider the low-voltage operation for compatibility with modern logic families. Evaluate the high output drive strength for applications requiring robust signal integrity across multiple loads.

Part Context

This part belongs to the SN74ALVCH16524 series, designed as a universal bus transceiver (UBT). It integrates both combinational buffering and sequential storage capabilities within a single integrated circuit, facilitating complex data routing and timing management in digital systems.

Replacement Considerations

SN74ALVCH16524DL

FAQ

How does the SEL input affect B-to-A data flow?

When SEL is high, data flows through a single register path. When SEL is low, data passes through a four-stage pipeline register path before reaching the A port.

What is the purpose of the CLKENBA input?

The CLKENBA input controls whether data is stored in the internal registers on the low-to-high transition of the clock signal, enabling synchronized data capture.