74ABT16646CMTD

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74ABT16646CMTD is a 16-bit bus transceiver and register featuring 3-state outputs. It operates within a supply voltage range of 4.5V to 5.5V. The device provides an output current capability of 32mA for high states and 64mA for low states. It utilizes ABT technology and includes D-type flip-flops with control circuitry for multiplexed data transmission. The component is housed in a 56-TFSOP package with a width of 6.10mm and supports an operating temperature range from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates bus transceiver circuits with 3-state outputs and D-type flip-flops
• Supports multiplexed transmission of registered or real-time data via direction control
• Provides high drive strength with specified output currents for reliable signal integrity

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed data bus interfaces requiring registered buffering
• Multiplexed data transmission systems
• Memory interface circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer origin, as Fairchild Semiconductor assets were acquired by ON Semiconductor. Confirm that the specific part number corresponds to the original Fairchild production specifications rather than the successor entity's variants. Ensure the package type matches the required 56-TFSOP footprint and validate RoHS compliance status for the specific batch.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a 16-bit bidirectional transceiver with internal latching is required for 5V logic systems. The ABT series offers faster performance compared to standard ALS or LVC families. Consider the TFSOP package constraints for PCB layout and ensure the power supply remains stable within the 4.5V to 5.5V range to maintain correct logic levels and output drive capabilities.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, which combines the speed of Advanced Schottky TTL with CMOS low power consumption. The 16646 variant specifically adds registration capabilities, allowing data to be captured on the clock edge while maintaining transparent transmission modes. This dual functionality makes it suitable for complex digital systems requiring both immediate and stored data handling on wide buses.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

ON Semiconductor manufactures successors such as the NBT16646. Verify pin compatibility and electrical characteristics against the original Fairchild datasheet before substitution. Other compatible parts include the SN74ABT16646 from Texas Instruments, though package and exact timing parameters should be cross-referenced.