onsemi

MC74ACT138DTR2G

MC74ACT138DTR2G Description

The MC74ACT138DTR2G from onsemi is a high-performance 1-of-8 decoder/demultiplexer IC designed for precision digital logic applications. Housed in a compact 16-pin TSSOP package, this device operates within a 4.5V to 5.5V supply range, making it ideal for 5V TTL-compatible systems. As part of the 74ACT series, it delivers 24mA output current (both high and low) with fast propagation delays, ensuring robust signal integrity in high-speed environments. The decoder features three binary select inputs (A0–A2) and three enable inputs (two active-low, one active-high) for flexible control. Its surface-mount design and REACH/RoHS3 compliance align with modern environmental and manufacturing standards.

MC74ACT138DTR2G Features

• High-Speed Operation: Optimized for ACT logic with TTL-compatible inputs and CMOS-level output swing.
• Versatile Control: Triple enable inputs (E1, E2, E3) allow cascading and system-level gating.
• High Drive Capability: 24mA sink/source current supports heavy loads without external buffers.
• Low Power Consumption: Balanced performance with minimal static power dissipation.
• Robust Packaging: Tape & Reel (TR) delivery in moisture-resistant MSL1 packaging for automated assembly.
• Wide Voltage Range: Operates reliably from 4.5V to 5.5V, accommodating voltage fluctuations.

MC74ACT138DTR2G Applications

• Address Decoding: Efficiently selects memory blocks or peripherals in microcontroller/microprocessor systems.
• Data Routing: Acts as a demultiplexer in communication interfaces or bus-sharing architectures.
• Display Driving: Controls LED arrays or segmented displays in industrial HMI and automotive dashboards.
• Logic Expansion: Extends GPIOs in FPGA/CPLD designs by decoding limited I/O pins.
• Automation Systems: Used in PLC modules for signal distribution and control logic.

Conclusion of MC74ACT138DTR2G

The MC74ACT138DTR2G stands out for its speed, drive strength, and flexibility, making it a preferred choice for high-reliability digital systems. Its low-power ACT technology, combined with industrial-grade robustness, ensures compatibility with legacy TTL while meeting modern efficiency demands. Whether for embedded control, data routing, or display management, this decoder/demultiplexer delivers consistent performance in space-constrained, noise-sensitive applications.