ON Semiconductor MC74ACT139MEL Dual 1-of-4 Decoder/Demultiplexer

The ON Semiconductor MC74ACT139MEL is a high-performance, dual 1-of-4 decoder/demultiplexer integrated circuit, designed to address the needs of complex digital systems. This versatile component is part of ON Semiconductor's ACT (Advanced CMOS Technology) series, which is renowned for its robustness, high speed, and low power consumption. The MC74ACT139MEL is particularly ideal for applications where high-speed decoding or demultiplexing of signals is required.

Key Features

• Logic Type: Dual 1-of-4 Decoder/Demultiplexer
• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -55°C to +125°C
• Package: SOEIAJ-16, a compact surface-mount package for space-constrained applications
• High-Speed Performance: t_PD = 4.5ns (typ) at V_CC = 5V
• Low Power Consumption: I_CC = 4µA (max) at T_A = 25°C

Functional Description

The MC74ACT139MEL is designed to decode two independent binary-coded inputs into one of four mutually exclusive outputs when both the strobe inputs, G1 and G2, are in a low logic state. Each half of the device features a separate decoder with its own input and output lines. When a strobe input is held high, all outputs for that decoder are held low.

The device's high-speed performance is complemented by the advanced CMOS technology, which ensures minimal power dissipation compared to bipolar logic counterparts. The MC74ACT139MEL is fully compatible with TTL logic levels, making it easy to interface with older logic families.

Applications

The MC74ACT139MEL is suitable for a wide range of applications in digital systems, including:

• Memory chip select decoding
• Data routing and multiplexing
• Address decoding for microprocessors
• Function generation

With its combination of high-speed operation, low power consumption, and robust temperature performance, the MC74ACT139MEL from ON Semiconductor is an excellent choice for designers looking to optimize their digital systems for both performance and reliability.