74HC139 DUAL 1-OF-4 DECODER / DEMULTIPLEXER 5V IC DIP-16

74HC139 DUAL 1-OF-4 DECODER / DEMULTIPLEXER 5V IC DIP-16

The 74HC139 is a high-speed CMOS logic IC containing two independent 2-to-4 line decoders/demultiplexers in a single package. Each section accepts two binary select inputs and uses an enable input to select one of four outputs. This makes the IC useful for decoding binary signals, selecting devices, and distributing digital control signals.

Each decoder has active-low outputs, meaning the selected output goes LOW when the decoder is enabled, while the other outputs remain HIGH. The device is suitable for digital systems that require compact logic decoding, including microcontroller interfaces, memory selection, and address decoding. Its 16-pin DIP package supports through-hole mounting and prototyping.

Features:

• The 74HC139 is a high-speed CMOS integrated circuit that provides two independent 1-of-4 Decoders/Demultiplexers.
• It is a versatile component commonly used in digital logic systems for decoding or routing signals.
• The 74HC139 decodes two binary weighted address inputs (nA0, nA1) to four mutually exclusive outputs (nY0 to nY3).
• Each decoder features an enable input (nE).
• When (nE) is HIGH all outputs are forced HIGH.
• The enable input can be used as the data input for a 1-to-4 demultiplexer application.
• Inputs include clamp diodes.
• This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
• High-Speed Operation: Operates with a propagation delay of only a few nanoseconds, depending on supply voltage and load conditions.
• Wide Operating Voltage Range: Compatible with both 3.3V and 5V logic levels, typically ranging from 2V to 6V.
• Standard CMOS Logic: Fully compatible with TTL input levels for ease of integration in mixed-logic systems.
• Independent Operation: Two separate decoders/demultiplexers in one package.
• Active Low Outputs: Outputs are active low, which is standard for many digital logic applications.
• Enable Input: Each decoder can be individually enabled or disabled to conserve power or manage functionality.
• Low Power Consumption: Ideal for battery-powered devices or systems with strict power requirements.

Specifications:

Pinout:

Applications:

• Memory Address Decoding.
• Data Routing and Selection.
• Signal Multiplexing and Demultiplexing.
• Logic Function Generation.
• Digital Communication Systems.

Package Includes:

• 1 × 74HC139 IC DUAL 1-OF-4 DECODER / DEMULTIPLEXER DIP-16.

Datasheet:

• 74HC139