74HC137D

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74HC137D

Encoders, Decoders, Multiplexers & Demultiplexers 3-TO-8 DECOD/DEMUX INVERTING

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Übersicht

Description

The 74HC137D is a high-speed CMOS 3-to-8 line decoder/demultiplexer. It takes three binary inputs (A0, A1, A2) and decodes them into eight active low outputs (Y0 to Y7), effectively enabling one of the eight outputs based on the input combination. The device features three enable inputs (G1, G2A, G2B) that control the operation; when G1 is high and both G2A and G2B are low, the decoder is active.
This component operates with a supply voltage range of 2V to 6V and can handle high-speed data processing, making it suitable for various applications like memory address decoding, data routing, and signal distribution in digital circuits. The 74HC137D is characterized by low power consumption and fast switching times, typical of the 74HC family. Its versatile nature allows for integration in both commercial and industrial electronic systems.

Features

The 74HC137D is a high-speed CMOS 3-to-8 line decoder/demultiplexer. Key features include:
1. Functionality: Converts a 3-bit binary input to one of eight outputs, with one output active low.
2. Enable Inputs: It has three enable inputs (G1, G2A, G2B) for controlling the activation of the device.
3. Low Power Consumption: Operates at low power levels typical of CMOS technology.
4. Wide Supply Voltage Range: Compatible with a supply voltage range of 2V to 6V, allowing flexibility in various applications.
5. High Noise Immunity: Features a high noise margin for reliable performance in noisy environments.
6. Fast Propagation Delay: Offers quick response times, typically around 4.5 ns at Vcc = 5V.
7. Wide Operating Temperature: Suitable for industrial applications with an operating temperature range from -40°C to 125°C.
8. Package Options: Available in multiple package types, including DIP and SOIC for ease of integration.
This device is commonly used in memory address decoding, data routing, and other digital logic applications.

Package

The 74HC137D is packaged in a 16-pin Dual In-Line Package (DIP).

Pinout

The 74HC137D is a 3-to-8 line decoder/demultiplexer with a pin count of 16.
### Pin Functions:
1. A0, A1, A2 (Pins 2, 3, 4): Input address lines.
2. G1 (Pin 1): Active high enable input.
3. G2A, G2B (Pins 5, 6): Active low enable inputs.
4. Y0 to Y7 (Pins 15, 14, 13, 12, 11, 10, 9, 7): Output lines; one of these will be LOW based on the binary value of inputs A0, A1, A2 when enabled.
5. Vcc (Pin 16): Power supply pin (typically +2V to +6V).
6. GND (Pin 8): Ground reference.
The device activates one of the eight outputs based on the binary combination of the inputs when the enable conditions are met.

Manufacturer

The 74HC137D is manufactured by Texas Instruments (TI), a well-known American technology company. Founded in 1951, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. TI is a leader in analog and embedded processing technologies, serving a wide range of industries, including automotive, industrial, communications, and consumer electronics. The 74HC137D is a high-speed CMOS 3-to-8 line decoder/demultiplexer, commonly used in digital circuits for addressing and control applications.

Application

The 74HC137D is a 3-to-8 line decoder/demultiplexer. Its application areas include address decoding in memory systems, data routing in communication devices, and implementing control logic in various digital circuits. It is used in microprocessor interfacing, multiplexing signals, and expanding the number of output lines in digital systems.

Equivalent

The 74HC137D chip, a 3-to-8 line decoder/demultiplexer, has several equivalent products, including:
- 74HCT137 (TTL compatible)
- 74LS137 (Low-power Schottky)
- 74HC238 (another 3-to-8 decoder)
- 74HC154 (4-to-16 decoder)
These alternatives may vary in speed, power consumption, and logic family but serve similar decoding functions. Always check the datasheets for specific pin configurations and electrical characteristics.

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