74ABT646APW,112

Buffers, Drivers, Receivers, Transceivers Overview

The NXP USA Inc. 74ABT646APW,112 is an octal bus transceiver and register featuring 3-state outputs, manufactured using high-performance BiCMOS technology. It integrates bus transceiver circuits with D-type flip-flops for multiplexed data transmission from input buses or internal registers. The device supports independent A and B bus control via dedicated clock, direction, and select pins. It operates within a supply voltage range of 4.5 V to 5.5 V and functions reliably across an ambient temperature range of -40 °C to +85 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Combines 74ABT245 and 74ABT373A type functions in one device
• Independent registers for A and B buses
• Multiplexed real-time and stored data
• Live insertion and extraction permitted

Buffers, Drivers, Receivers, Transceivers Applications

• Bus management systems requiring simultaneous storage and transfer
• High-speed data communication interfaces
• Systems supporting live insertion and extraction protocols

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix ',112' against official NXP documentation to confirm packaging details and availability status. Ensure the component meets required automotive qualification standards if applicable. Confirm package dimensions match the TSSOP24 specification (SOT355-1) before integration into PCB layouts.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require both real-time bus transparency and data storage capabilities within a single logic family. It is suitable for applications needing independent control over two separate 8-bit buses with distinct clocking mechanisms for each direction.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT series of high-performance BiCMOS logic devices. It serves as a combined solution for bus transceivers and latches, replacing the need for separate 74ABT245 and 74ABT373A components. The device is designed for low power dissipation while maintaining high speed and drive capability.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include the 74ABT646AD and 74ABT646ADB variants, which offer identical functionality but differ in package type (SO24 and SSOP24 respectively). Verify pin compatibility and thermal requirements when substituting packages.