MC74ACT245ML1

Overview

The MC74ACT245ML1 is an octal bidirectional transceiver manufactured by onsemi, belonging to the 74ACT logic family. 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 a propagation delay of 8 ns. It provides a low-level output current of 24 mA and a high-level output current of -24 mA at both A and B ports. The component is housed in a 20-lead TSSOP package and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Octal bidirectional data path supporting simultaneous transmission between two bus lines
• Three-state outputs allowing connection to shared data buses without interference
• TTL-compatible inputs ensuring seamless integration with TTL logic devices
• High drive capability with 24 mA source and sink currents at both ports

Applications

• Bus-oriented memory and instrument control systems
• Clock drivers and buffered oscillators
• Data acquisition and signal routing modules

Procurement Notes

Verify the specific suffix ML1 against official onsemi documentation to confirm the exact tape-and-reel packaging configuration and moisture sensitivity level. Ensure the procurement channel sources genuine components with traceable manufacturing dates to maintain reliability standards for industrial or commercial deployments.

Selection Notes

Select this component when designing systems requiring high-speed data transfer with TTL input compatibility. The ACT series offers faster switching speeds compared to standard AC logic while maintaining CMOS power efficiency. Verify that the system voltage remains strictly within the 4.5 V to 5.5 V range to ensure proper logic threshold operation and prevent damage to the internal circuitry.

Part Context

This part belongs to the widely adopted 74ACT245 family of octal bus transceivers. It serves as a critical interface component for managing data flow between microprocessors, memory arrays, and peripheral devices. The device simplifies board layout by providing direction control via a single Transmit/Receive pin and global output enable functionality.

Replacement Considerations

Compatible substitutes include the MC74AC245ML1G for AC-series performance and the SN74ACT245PW from Texas Instruments. Verify pinout compatibility and electrical specifications before substitution.