74ABT16821ADL,518

Flip Flops Overview

The 74ABT16821ADL,518 is a 20-bit bus-interface D-type flip-flop manufactured by NXP USA Inc. It features positive-edge triggering and 3-state outputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum frequency of 160 MHz at nominal supply. It has a load capacitance of 50 pF and an output low current (Iol) of 0.064 A. The component is housed in a 56-pin SSOP package and functions across a temperature range of -40 °C to +85 °C.

Flip Flops Feature Summary

• Provides 20-bit data storage with positive-edge clock triggering for synchronous bus interfacing.
• Features 3-state outputs to facilitate direct connection to system buses without external transceivers.
• Utilizes ABT logic series technology to ensure high-speed operation up to 160 MHz.

Flip Flops Applications

• High-speed parallel data bus interface circuits
• Synchronous memory buffer applications
• System-level data latch and register implementations

Flip Flops Procurement Notes

Verify the specific suffix ',518' against official NXP documentation to confirm packaging and reel specifications. Confirm RoHS compliance status as indicated in current datasheets. Check for obsolescence notices or lifecycle changes prior to procurement, as availability may vary based on production status.

Flip Flops Selection Notes

Select this component when a 20-bit wide synchronous storage solution with 3-state output control is required. Ensure the design environment supports the 4.5 V to 5.5 V operating voltage range. Verify that the PCB layout accommodates the 56-lead SSOP package dimensions and thermal requirements for the specified industrial temperature range.

Flip Flops Part Context

This part belongs to the NXP 74ABT family of advanced BiCMOS logic devices. The ABT series is designed for high-performance applications requiring fast propagation delays and low power consumption. The 74ABT16821 specifically addresses the need for wide-data-path synchronization in complex digital systems.

Flip Flops Replacement Considerations

Public confirmed substitute: SN74ALVCH16821DL (Texas Instruments). Note that the substitute operates at different voltage levels (2.3V–3.6V) and may require level shifting or voltage supply adjustments in the target circuit.