74ABT16543CMTD

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74ABT16543CMTD is a 16-bit registered bus transceiver utilizing advanced BiCMOS technology. It comprises two independent 8-bit transceivers with D-type latches for data storage in either direction. The device operates within a supply voltage range of 4.5V to 5.5V and features three-state outputs. It supports bidirectional data flow controlled by separate latch-enable and output-enable inputs. The component is housed in a 56-pin TSSOP package and is rated for operation from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates two independent 8-bit registers allowing flexible 8-bit or 16-bit configurations
• Utilizes EPIC-II BiCMOS technology for low power consumption and high speed
• Features distributed VCC and GND pins to minimize switching noise
• Provides high drive capability with specified output current ratings

Buffers, Drivers, Receivers, Transceivers Applications

• High-performance memory mapping systems
• Clock drivers and buffered interfaces
• Bus-oriented architectures requiring data latching

Buffers, Drivers, Receivers, Transceivers Procurement Notes

This specific part number is obsolete and no longer manufactured by onsemi, which acquired Fairchild Semiconductor. Engineers must verify the availability of equivalent replacement components from manufacturers such as Texas Instruments. Ensure that any substitute part matches the original electrical specifications, pinout compatibility, and thermal requirements before integration into existing designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Selection should focus on the requirement for registered bus transceivers with high drive strength. The ABT series offers a balance of speed and power dissipation suitable for 5V logic systems. Verify that the application necessitates the specific latch functionality and bidirectional control provided by this architecture compared to standard unbuffered transceivers.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74ABT16543 belongs to the 74ABT logic family, designed for applications requiring faster performance than standard ALS devices while maintaining lower power than older ABT variants. This specific component represents a legacy product from Fairchild Semiconductor's portfolio, now managed under onsemi following corporate acquisition and subsequent product lifecycle management strategies.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Texas Instruments SN74ABT16543DL is documented as a parameter-equivalent alternative.