74ABT640PW,112

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ABT640PW,112 is an octal bidirectional bus transceiver manufactured by NXP USA Inc. It features inverting 3-State outputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device provides high output drive capability with low-level currents up to 64 mA and high-level currents up to -32 mA. Propagation delay is typically 3.1 ns at 25°C and 5V, with maximum delays reaching 4.9 ns across the operating temperature range of -40°C to +85°C. It utilizes a 20-pin TSSOP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bidirectional bus interface with direction control pin
• Inverting 3-State buffers for easy cascading
• Power-up 3-State state ensures safe live insertion and extraction

Buffers, Drivers, Receivers, Transceivers Applications

• High-performance memory mapping
• Clock drivers
• Bus-oriented architectures

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix '112' against current manufacturer documentation to confirm packaging and tape-and-reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high-speed data transfer between buses. The ABT logic family offers superior speed compared to standard TTL while maintaining compatibility. Ensure the design accommodates the required 3-State control signals via OE and DIR inputs for proper bus arbitration.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT series of high-performance BiCMOS logic devices. The series combines low static power dissipation with high-speed operation. The 74ABT640 specifically addresses applications needing wide data path buffering with controlled directionality.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct cross-reference part numbers from NXP or other manufacturers offering identical pinouts and electrical characteristics. Verify that any substitute maintains the same TSSOP-20 package dimensions and thermal performance.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the DIR input?

The DIR (Direction) input controls the data flow direction between the A side and B side ports.

How does the device handle power-up states?

The device enters a 3-State condition upon power-up, preventing unintended bus loading during initialization.