74ABT640DB,118

Buffers, Drivers, Receivers, Transceivers Overview

The 74ABT640DB,118 is an octal bidirectional bus transceiver manufactured by NXP USA Inc. under the ABT logic series. 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 capabilities with +64 mA low-level and -32 mA high-level current ratings. Propagation delay is typically 3.1 ns at 5 V with a 50 pF load. It utilizes a 20-pin SSOP package (SOT339-1) and supports an operating temperature range from -40 °C to +85 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bidirectional bus interface with direction pin control
• High output drive capability (+64mA/-32mA)
• Power-up 3-State functionality for live insertion/extraction
• Latch-up protection exceeding 500mA per JEDEC Std 17

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package variant. Ensure compliance with RoHS directives and check for any discontinuation notices or lifecycle status updates prior to finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-speed data transfer with significant drive strength. The ABT technology offers superior speed compared to standard CMOS while maintaining lower power consumption than older bipolar families. Ensure the design accommodates the 5V nominal supply requirement and thermal constraints associated with high-current outputs.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT family of high-performance BiCMOS logic devices. It serves as a successor to earlier 74S and 74LS series components, offering improved switching speeds and drive capabilities. The DB suffix specifically denotes the 20-pin Plastic SSOP Type II package configuration.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include the 74ABT245 for non-inverting applications and the 74ABT16245 for 16-bit configurations. Verify pin compatibility and electrical characteristics when substituting with other octal transceivers from the same logic family.