SN74ACT563DBR

Overview

The SN74ACT563DBR is an octal D-type transparent latch with three-state inverted outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports input voltages up to 5.5 V. The device features TTL-voltage compatible inputs and a maximum propagation delay of 8.5 ns at 5 V. It utilizes a flow-through architecture to optimize PCB layout. The package type is SSOP-20, and it functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Octal D-type transparent latches with three-state inverted outputs
• TTL-voltage compatible inputs accepting voltages up to 5.5 V
• Buffered output-enable (OE) input for high-impedance state control
• Flow-through architecture designed to optimize PCB layout

Applications

• Driving bus lines directly without interface or pullup components
• Retaining old data while entering new data in the high-impedance state
• Ensuring high-impedance state during power-up or power-down sequences

Procurement Notes

Verify that the component matches the SN74ACT563DBR part number and SSOP-20 package configuration. Confirm the manufacturer is Texas Instruments and check for the AD563 top-side marking. Ensure the device meets the specified -40°C to +85°C operating temperature range and 4.5 V to 5.5 V supply voltage requirements before integration.

Selection Notes

Select this component when an octal transparent latch with three-state outputs is required. It is suitable for applications needing direct bus line driving capabilities without additional interface components. Consider the flow-through architecture for efficient PCB layout optimization. Verify compatibility with systems requiring TTL-voltage compatible inputs and operation within the standard ACT logic family specifications.

Part Context

The SN74ACT563DBR belongs to the SN54/74ACT series of octal D-type transparent latches. This series is characterized by CMOS technology and three-state outputs. The 'DB' suffix indicates the SSOP-20 package variant. Other variants in the series include different package types such as SOIC, PDIP, and TSSOP, catering to various mounting and layout requirements.

Replacement Considerations

Compatible substitutes include SN74ACT563DW and SN74ACT563DWR from Texas Instruments. These parts share identical electrical characteristics but differ in packaging or reel format. Verify pinout compatibility and ensure the replacement meets the same operating temperature and voltage specifications.