74ABT652CSC

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ABT652CSC is an octal bus transceiver and register featuring independent D-type flip-flops for A and B buses. It supports multiplexed transmission of real-time or stored data via select inputs SAB and SBA. The device operates within a supply voltage range of 4.5V to 5.5V, with a maximum clock frequency of 200 MHz. Propagation delays reach up to 10.0 ns under 250 pF loads. It provides 3-state outputs with 64 mA sink and 32 mA source capabilities, housed in a 24-lead SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Independent registers for A and B buses allow storage of data from either bus.
• Multiplexed real-time and stored data transmission controlled by select inputs.
• High impedance glitch-free bus loading during power-up and power-down cycles.
• Nondestructive hot insertion capability ensures safe bus management.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus management systems requiring multiplexed data transfer
• Octal buffer and line driver applications
• Clock distribution networks
• Memory address drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering code suffix against current manufacturer documentation to confirm package type and tape/reel availability. Confirm RoHS compliance status through official datasheets. Check for obsolescence notices as this component originates from legacy Fairchild Semiconductor documentation. Ensure pinout compatibility with target PCB footprint before integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when octal bidirectional data flow with internal latching is required. The ABT series offers high-speed performance suitable for demanding digital interfaces. Verify that the 24-lead SOIC package fits the assembly constraints. Consider the 3-state output drive strength requirements for the connected load capacitance and trace length.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT logic family, characterized by BiCMOS technology for high speed and low power consumption. It functions as both a transceiver and a register, providing flexibility in system design. The device integrates control circuitry for managing data flow between two distinct 8-bit buses, facilitating complex data routing architectures.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct pin-compatible substitutes within the same logic family. Verify electrical characteristics such as propagation delay and output drive current match the original design requirements. Ensure the replacement package matches the physical dimensions of the 24-lead SOIC form factor.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle data storage?

Data on the A or B bus is clocked into the respective internal D-type flip-flops upon a LOW to HIGH transition at the appropriate clock input (CPAB or CPBA).

What controls the multiplexing function?

The select inputs SAB and SBA control whether the outputs reflect real-time data from the opposite bus or stored data from the internal registers.

Is the device protected against latchup?

Yes, the datasheet guarantees latchup protection exceeding specified voltage limits, ensuring reliability under overvoltage conditions.