74ABT540D,623

Buffers, Drivers, Receivers, Transceivers Overview

The NXP USA Inc. 74ABT540D,623 is an octal inverting buffer with 3-State outputs manufactured by Philips Semiconductors. It operates within a DC supply voltage range of 4.5 V to 5.5 V and supports an operating temperature 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 (tPLH/tPHL) ranges from 1.0 ns to 4.3 ns at VCC = 5.0 V with a 50 pF load. Quiescent supply current (ICCL) is typically 24 µA at 5.5 V.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus interface design with inputs and outputs on opposite package sides to facilitate printed circuit board layout.
• High-speed performance combining low static and dynamic power dissipation with high output drive capabilities.
• Supports live insertion and extraction operations through integrated 3-State buffering functionality.

Buffers, Drivers, Receivers, Transceivers Applications

• Driving bus lines in computer systems
• Clock distribution networks
• Buffering memory data buses

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the component manufacturer as Philips Semiconductors or its successor entities when sourcing this part number. Confirm that the specific ordering suffix matches the required plastic SO package variant. Ensure compliance with RoHS directives if applicable to your manufacturing environment. Cross-reference datasheet revision dates to ensure compatibility with existing design specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-speed signal inversion and robust bus driving capabilities. The dual-output enable pins allow flexible control over data flow direction. Consider the 20-pin plastic SO package dimensions for PCB footprint planning. Evaluate thermal requirements based on the specified operating temperature range and power dissipation characteristics.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, characterized by BiCMOS technology that balances speed and power efficiency. It serves as a standard octal buffer solution for digital logic interfaces. The product specification supersedes earlier documentation from October 1996, reflecting updated electrical parameters and reliability standards for industrial applications.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include the SN74ABT540 series from Texas Instruments. Verify pinout compatibility and electrical parameter alignment before substitution. Check for equivalent packaging options to maintain mechanical fit in existing assemblies.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the OE0 and OE1 pins?

OE0 and OE1 are independent output enable pins that control the 3-State condition of the respective halves of the octal buffer, allowing flexible bus direction control.

Does the device support hot swapping?

Yes, the 3-State outputs permit live insertion and extraction, making it suitable for hot-swappable bus applications.