SN74ALS563BNSRG4

Overview

The SN74ALS563BNSRG4 is an 8-bit D-type transparent latch manufactured by Texas Instruments. It features tri-state outputs designed for driving high-capacitance loads and bus systems. The device operates within a supply voltage range of 4.5 V to 5.5 V. It is housed in a 20-SOIC package with a width of 5.30 mm. The component supports surface mount technology and is supplied in tape and reel packaging.

Feature Summary

• Contains eight independent D-type transparent latches
• Equipped with tri-state outputs for bus-driven applications
• Designed specifically for driving high-capacitance loads

Applications

• Bus-oriented memory mapping
• High-capacitance load driving
• Digital data storage circuits

Procurement Notes

Verify the specific ordering suffix 'G4' confirms lead-free compliance and environmental specifications as defined by Texas Instruments. Confirm the 20-SOIC package dimensions match your PCB footprint requirements. Ensure the tape and reel quantity aligns with your assembly line capacity. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring multiple parallel data latches with high drive capability. The ALS logic family offers improved speed over standard TTL while maintaining compatible voltage levels. Verify that the input signal timing meets the setup and hold time requirements specified in the datasheet. Ensure the power supply decoupling strategy supports the switching currents generated by the tri-state outputs during state transitions.

Part Context

This part belongs to the SN74ALS563B series of 8-bit latches. It is distinct from non-tri-state variants and other logic families such as LS or HC. The SN74ALS563BNSRG4 designation indicates the specific package type, pin configuration, and manufacturing revision. It serves as a digital storage element in microprocessor-based systems and interface circuits.

Replacement Considerations

Direct functional substitutes include the SN74ALS563BDW and SN74ALS563BNSR. Verify pin compatibility and electrical characteristics before substitution. Ensure the replacement part maintains the same tri-state output functionality and voltage operating range.