74ABT373AD,112

Overview

The NXP USA Inc. 74ABT373AD,112 is an octal transparent latch featuring 3-State output buffers. It operates within a DC supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. The device provides high output drive capability with a low-level output current of 64 mA and a high-level output current of -32 mA. Propagation delay from data inputs (Dn) to outputs (Qn) ranges from 1.4 ns to 4.7 ns depending on conditions. The component utilizes a 20-pin plastic small outline package.

Feature Summary

• Octal transparent latch design coupled with independent 3-State output buffers controlled by separate Enable and Output Enable gates.
• High-output drive capability designed for heavily loaded 3-State buses, MOS memories, or MOS microprocessors.
• Power-up 3-State functionality ensures live insertion and extraction are permitted without bus contention.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Confirm availability status as distribution channels may list obsolete or discontinued stock. Ensure compatibility with existing system voltage levels and load requirements before procurement.

Selection Notes

Select this component for applications requiring octal latching with high-speed performance and strong drive currents. Consider the 20-pin SO package constraints and verify that the 4.5 V to 5.5 V supply range matches the target system architecture. Evaluate propagation delays against timing requirements for the specific bus interface.

Part Context

This part belongs to the 74ABT series of high-performance BiCMOS logic devices. It functions as an octal transparent latch with 3-State outputs, distinct from flip-flops or simple buffers. The ABT series is characterized by low static power dissipation combined with high speed and robust output drive capabilities suitable for complex digital systems.

Replacement Considerations

Check for direct equivalents such as the 74ABT373A in different package variants (e.g., DIP, SSOP, TSSOP) if pinout compatibility allows. Verify functional equivalence regarding latch transparency and 3-State control logic before substitution.