74ABT573AD,112

Overview

The NXP USA Inc. 74ABT573AD,112 is an octal D-type transparent latch featuring 3-State outputs, manufactured by Philips Semiconductors. It utilizes a flow-through pinout configuration to facilitate microprocessor interfacing and PCB layout. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. Key electrical parameters include a propagation delay (Dn to Qn) of 2.8 ns typical at 25°C with 50pF load, high-level output current of -32 mA, and low-level output current of 64 mA. It incorporates power-up 3-State functionality and ESD protection exceeding 2000 V per MIL STD 883 Method 3015.

Feature Summary

• Flow-through pinout design for easy interface to microprocessors
• Octal transparent latch coupled to eight 3-State output buffers
• Power-up 3-State and power-up reset capabilities
• Latch-up protection exceeds 500mA per JEDEC Std 17

Applications

• Driving heavily loaded 3-State buses
• Interfacing with MOS memories
• Connecting to MOS microprocessors

Procurement Notes

Verify the manufacturer designation as Philips Semiconductors or NXP on official documentation, as legacy branding may appear. Confirm the package type corresponds to the 'D' suffix (20-Pin plastic SO) and ensure the ordering suffix matches the specific revision required. Check RoHS compliance status against current environmental declarations before procurement.

Selection Notes

Select this component when a flow-through pinout is required for direct microprocessor bus interfacing. It serves as a functional equivalent to the 74ABT373 but offers improved board layout flexibility. Ensure the application requires octal latching with independent output enable control and compatible 3-State bus driving requirements.

Part Context

This part belongs to the 74ABT logic family, characterized by BiCMOS technology offering high speed and low power dissipation. It is functionally identical to the 74ABT373 but distinguished by its flow-through pinout configuration. The device is designed for applications requiring robust data storage and high-drive capability in digital systems.

Replacement Considerations

The 74ABT373 is functionally identical but lacks the flow-through pinout. Other 74ABT series octal latches with 3-State outputs may be considered if pinout compatibility is not a constraint.