74ABT16646CMTD

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 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 independent registers for A and B buses, allowing multiplexed real-time and stored data transmission. It supports a maximum clock frequency of 200 MHz with propagation delays as low as 1.5 ns. Output drive capabilities include a sink current of 64 mA and a source current of 32 mA. The component is housed in a 56-Lead Thin Shrink Small Outline Package (TSSOP).

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Independent registers for A and B buses allow flexible data storage and retrieval.
• Multiplexed real-time and stored data modes enable transparent or registered transmission paths.
• High impedance glitch-free bus loading ensures safe operation during power-up and power-down cycles.
• Nondestructive hot insertion capability protects the circuit during live connection events.

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed data bus interfaces requiring registered buffering.
• System memory architectures utilizing multiplexed data paths.
• Digital signal processing systems needing isolated data latching.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific ordering code matches the required package type, as the CMTD suffix denotes the TSSOP variant. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design specifications align with the absolute maximum ratings provided in the datasheet to prevent device damage. Check for any recent product change notices regarding manufacturing locations or material composition updates.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a 16-bit width is required alongside integrated registration capabilities. The ABT logic family offers superior speed compared to standard ALS or LVC families. Verify that the system operating voltage falls strictly between 4.5V and 5.5V. Consider the 56-pin TSSOP footprint constraints against available PCB space. Evaluate the 64 mA sink current requirement against the total bus load capacitance and fan-out needs.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the ABT logic family, characterized by BiCMOS technology for high-speed performance. It serves as a registered bus transceiver, combining level shifting and data storage functions. The 74ABT16646 is part of a broader series of 16-bit interface components designed for complex digital systems requiring precise timing control and data isolation.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: 74ABT16646CSSC (SSOP package variant).