SN74ABT657ADBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ABT657ADBR is an octal transceiver with parity generators/checkers and 3-state outputs. It utilizes state-of-the-art EPIC-IIB BiCMOS design to significantly reduce power dissipation. The device features high-drive outputs capable of -32-mA IOH and 64-mA IOL, ensuring robust signal integrity. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range from -40°C to 85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates parity generator and checker circuits for data validation
• Provides bidirectional data flow control via transmit/receive input
• Maintains high-impedance state during power-up and power-down events

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional bus-oriented memory and register implementations
• Control lines driving multiple receivers in system architectures
• Parity checking and generation in communication protocols

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DBR' corresponds to the SSOP-24 package and tape-and-reel quantity of 2000 units. Confirm that the component meets RoHS compliance standards as indicated in the packaging information. Ensure the selected variant matches the required operating temperature range and electrical specifications for your application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional octal data transfer with integrated error detection is required. The ABT series offers faster switching speeds compared to standard logic families while maintaining low power consumption. Consider the SSOP-24 package dimensions and thermal characteristics for PCB layout optimization.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ABT657A family of octal transceivers. It shares functional similarities with other ABT series devices but includes unique parity generation and checking capabilities. The device is designed for high-performance applications requiring reliable data transmission and integrity verification across bidirectional buses.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ABT657ADW (SOIC-24 package)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the transmit/receive input control data direction?

When the T/R input is high, data flows from the A port to the B port (transmit mode). When T/R is low, data flows from the B port to the A port (receive mode).

What is the function of the ERR output?

In receive mode, the ERR output indicates whether the received data exhibits the correct parity sense based on the ODD/EVEN selection and PARITY input.