74ACT245SJ

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACT245SJ is an octal bidirectional transceiver belonging to the 74ACT logic series. It features eight non-inverting buffers with three-state outputs, designed for bus-oriented applications. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports TTL input levels while providing CMOS output levels. It exhibits a propagation delay of 8 ns and delivers a low-level output current of 24 mA alongside a high-level output current of -24 mA at both A and B ports. The component is housed in a 20-pin SOP package and functions within a temperature range of -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight non-inverting bidirectional data paths controlled by Transmit/Receive and Output Enable inputs.
• Features three-state outputs that enter a high-impedance state when disabled, allowing safe parallel bus connections.
• Delivers strong drive capability with 24 mA source and sink currents at both port interfaces.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented data transmission systems
• Memory and memory interface circuits
• Clock drivers and buffer circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix SJ against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Confirm RoHS compliance status directly from the datasheet as availability varies. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between TTL-compatible logic sources and CMOS loads requiring high drive strength. Ensure the system voltage remains strictly within the 4.5 V to 5.5 V range to maintain timing parameters. Verify that the SOP-20 footprint matches the PCB layout requirements for surface-mount assembly.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ACT family of octal bus transceivers, which are standard components for managing data flow in digital systems. It serves as a bridge between different logic families, specifically enabling communication between TTL inputs and CMOS outputs. The device is widely used in computer architecture and industrial control systems for data buffering.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74ACT245SC is a documented alternative offering similar electrical characteristics in a SOIC-20 package. Verify pin compatibility and package dimensions before substitution.