74ABT573APW,118

Overview

The 74ABT573APW,118 is an octal D-type transparent latch with 3-State outputs manufactured by NXP USA Inc. It 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. The device features a flow-through pinout in a 20-pin TSSOP package. Propagation delays are specified at 2.8 ns (typical) for data-to-output transitions and 2.5 ns (typical) for enable-to-output transitions at 5V. Output drive capabilities include -32 mA high-level and 64 mA low-level currents.

Feature Summary

• Flow-through pinout configuration facilitates easy interface to microprocessors and simplifies printed circuit board layout.
• Independent control of latch operation via Enable input and 3-State output buffering via active-Low Output Enable input.
• High-performance BiCMOS technology provides low static power dissipation combined with high-speed operation and heavy load driving capability.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the 20-pin Plastic TSSOP Type I package when sourcing. Confirm that the manufacturer designation aligns with NXP USA Inc., as Philips Semiconductors was the original issuer of this specification. Ensure compatibility with the recommended operating conditions regarding supply voltage limits and thermal ranges before integration into final designs.

Selection Notes

Select this component when a flow-through pinout is required for direct microprocessor interfacing, distinguishing it from the functionally identical but differently pinned 74ABT373. Consider the ABT series characteristics for applications demanding higher speed and lower power consumption compared to standard TTL or CMOS alternatives. Verify that the 3-State output buffers meet the bus loading requirements of the target system architecture.

Part Context

This component belongs to the 74ABT logic family, characterized by BiCMOS technology offering high speed and low power. It serves as an octal latch variant within the broader 74-series logic ecosystem. The device is functionally equivalent to the 74ABT373 but utilizes a distinct pinout arrangement optimized for specific layout constraints and processor interface needs.

Replacement Considerations

The 74ABT373 is functionally identical but lacks the flow-through pinout. Other 74ABT series latches may offer different pin configurations or package types. Verify pin compatibility and electrical specifications against current design requirements before substituting.