MC74AC139DG

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The MC74AC139DG is a 3-to-8 line decoder/demultiplexer designed for high-speed chip-to-chip decoding applications. It is designed to expand the line levels of a bus connection while still providing low propagation delays and low power consumption. This device operates at a maximum load source and sink current of 10mA, and operates over the extended temperature range of -40°C to +85°C.

The MC74AC139DG operates using two enable inputs (E1 and E2). When E1 is enabled, the device will decode the three address inputs (A0-A2) to 8 outputs (Y0-Y7). When E2 is enabled, the device will decode the same three address inputs to only 2 outputs (Y0 and Y1). These two outputs can be combined with the 8 outputs from the first enable to create 10 binary decoders.

This device utilizes a TTL-compatible input logic structure for all inputs, with an output logic type of active-low TTL-compatible logic. This allows for simple interfacing with other device types and helps ensure reliable system performance. The output pins are fully buffered, so that no additional logic is required when cascading multiple devices together. The MC74AC139DG can also be used in combination with other logic families, such as CMOS, making it a versatile signal switch.

The MC74AC139DG is designed to operate from a single +5V supply. This device implements an advanced propriety circuit design which allows for high speed switching, minimal signal crosstalk, and low power consumption. The device features propagation delays as low as 9ns and is recommended for any general-purpose logic applications that require fast and reliable signal transmission.

The MC74AC139DG is suitable for many applications, including gaming terminals, data multiplexers and digital signal processing systems. This device is an ideal choice when the need arises for a general-purpose logic chip that can react quickly and accurately. With its fast operation and low power requirements, the MC74AC139DG is an excellent choice for any logic application.

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