DM74ALS5245WM

Overview

The DM74ALS5245WM is an octal bus transceiver belonging to the Advanced Low-power Schottky (ALS) logic family. It features eight bidirectional data paths with three-state outputs, allowing connection to multiple buses while preventing electrical interference. The device includes direction control and output enable inputs to manage data flow between two independent 8-bit buses. Designed for TTL-compatible operation, it utilizes a 20-lead Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• Provides bidirectional data transmission across eight parallel channels
• Features three-state outputs that isolate the bus when disabled
• Includes dedicated direction control input for managing data flow orientation
• Utilizes advanced low-power Schottky technology for improved performance

Applications

• Memory systems requiring high-speed data transfer
• Microprocessor-based system architectures
• Asynchronous bidirectional data bus configurations

Procurement Notes

Verify the specific suffix 'WM' against official Fairchild or onsemi documentation to confirm the exact package variant and lead finish specifications. Ensure the component matches the required operating temperature range and voltage levels specified in the datasheet before integration into the design.

Selection Notes

Select this component when designing systems that require robust, high-speed data transfer between microprocessors and memory modules. The ALS series offers a balance of speed and power consumption suitable for complex digital logic applications where bus isolation and controlled data direction are critical requirements.

Part Context

This part belongs to the widely used 74ALS logic family, known for superior switching speeds compared to standard LS devices while maintaining lower power dissipation than F series components. It serves as a fundamental building block for digital interface circuits in industrial and computing equipment.

Replacement Considerations

Compatible substitutes include the DM74ALS245A and MM74ALS245A. Verify pin compatibility and electrical characteristics before substitution.