74ALVCH16821DGG:11

Overview

The 74ALVCH16821DGG:11 is a 20-bit bus-interface D-type flip-flop manufactured by NXP USA Inc. It features positive-edge triggering and three-state outputs, designed for high-speed data latching in digital systems. The device operates within a supply voltage range of 2.3 V to 3.6 V, ensuring compatibility with standard logic levels. It utilizes a 56-pin TSSOP package, suitable for surface-mount applications requiring compact footprints. The component supports clock frequencies up to 350 MHz, providing low propagation delay for efficient signal processing in complex circuit architectures.

Feature Summary

• 20-bit bus interface architecture for parallel data handling
• Positive-edge triggered D-type flip-flop operation
• Three-state output capability for bus isolation
• High-speed performance supporting 350 MHz clock frequencies

Applications

• High-speed data bus interfaces
• Parallel data acquisition systems
• Memory buffer circuits
• Digital signal processing front-ends

Procurement Notes

Verify the exact ordering suffix and manufacturer designation when sourcing, as Nexperia holds rights to the 74ALVCH series following the NXP Logic division sale. Confirm package type and moisture sensitivity level requirements against current datasheet specifications. Ensure compliance with RoHS directives and check for any product change notifications affecting pinout or electrical characteristics prior to final design approval.

Selection Notes

Select this component for designs requiring wide parallel data latching with minimal pin count. The 20-bit configuration reduces board space compared to multiple smaller flip-flops. Consider the 3.6 V maximum rating for system voltage compatibility. Evaluate thermal performance in dense PCB layouts due to the TSSOP56 package constraints. Verify input capacitance and drive strength requirements match the source and load impedances in the target application circuit.

Part Context

This part belongs to the 74ALVCH family of low-voltage CMOS logic devices. The series is characterized by high speed and low power consumption, making it suitable for portable and battery-operated applications. The 74ALVCH16821 specifically addresses the need for large-capacity data storage in a single package, streamlining design complexity for high-bandwidth data paths in consumer electronics and industrial control systems.

Replacement Considerations

Direct substitutes include the SN74ALVCH16821 from Texas Instruments, which offers pin-compatible functionality. Other equivalents within the 74ALVCH series may provide similar electrical characteristics but require verification of specific package dimensions and timing parameters to ensure seamless integration into existing hardware designs.