74ABT646AD,118

Buffers, Drivers, Receivers, Transceivers Overview

The NXP USA Inc. 74ABT646AD,118 is an octal bus transceiver and register featuring 3-state outputs. It integrates independent D-type flip-flops for both A and B buses, enabling multiplexed real-time data transmission or storage from internal registers. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range of -40 °C to +85 °C. It utilizes a 24-lead SO plastic small outline package (SOT137-1) with a body width of 7.5 mm.

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 data transfer and storage
• High-performance BiCMOS logic applications
• Systems utilizing multiplexed transmission of data directly from input bus or internal registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix '112' against official documentation, as the provided datasheet references 'AD' without that suffix. Confirm package compatibility with SOT137-1 specifications. Ensure design compliance with recommended operating conditions regarding supply voltage and temperature ranges before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal transceiver with integrated storage capabilities is required. It is suitable for designs needing independent control over data flow direction and storage states for two separate buses. Verify that the 24-lead SOIC package fits the board layout constraints and that the 4.5 V to 5.5 V supply voltage aligns with system power rails.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT series of high-performance BiCMOS logic devices manufactured by NXP Semiconductors. The series is characterized by low static and dynamic power dissipation combined with high speed and high output drive capabilities. The 74ABT646A specifically addresses complex bus interface requirements by merging transceiver and register functionalities.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Consult official NXP documentation for verified substitute part numbers. Cross-reference pinouts and electrical characteristics carefully if considering alternative manufacturers.