74LVC138ABQ

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74LVC138ABQ

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Spezifikationen

Brand Nexperia
Product Type Encoders, Decoders, Multiplexers & Demultiplexers
Subcategory Logic ICs
Logic Family LVC

Übersicht

Description

The 74LVC138ABQ is a low-voltage, high-speed, 3-to-8 line decoder/demultiplexer integrated circuit (IC) from Texas Instruments. It operates on a supply voltage range of 1.2V to 3.6V, making it suitable for low-power applications. The device converts a 3-bit binary input into one of eight active low outputs, effectively enabling the selection of one output line from a set of eight based on the input value.
The 74LVC138ABQ features three enable inputs, allowing for flexible control over the output states. When all enable signals are high, the outputs remain inactive. It provides fast switching times, which enhances performance in high-speed applications. This IC is widely used in various digital circuits, including memory address decoding and data routing, due to its efficient handling of multiple outputs with minimal power consumption.
In summary, the 74LVC138ABQ is a versatile and energy-efficient component ideal for applications requiring binary decoding or signal routing in compact electronic designs.

Features

The 74LVC138ABQ is a low-voltage CMOS 3-to-8 line decoder/demultiplexer. Key features include:
1. Wide Supply Voltage Range: Operates from 1.0V to 3.6V, making it suitable for various low-voltage applications.
2. High-Speed Operation: Typical propagation delay is around 5ns at 3.3V, ensuring fast signal processing.
3. Low Power Consumption: Consumes minimal power, making it ideal for battery-operated devices.
4. Active Low Outputs: Provides eight active-low outputs, allowing for easy interfacing with other logic devices.
5. Enable Inputs: Two enable inputs enhance flexibility in system design, allowing for control over the operation of the decoder.
6. TTL Compatibility: Compatible with TTL logic levels, ensuring versatility in mixed-signal environments.
7. Pin and Function Compatibility: Compatible with other 74LVC series devices, facilitating integration in existing designs.
These features make the 74LVC138ABQ suitable for applications in digital systems, data routing, and address decoding.

Package

The 74LVC138ABQ is packaged in a TSSOP-20 (Thin Shrink Small Outline Package) format. This surface-mount package is designed for high-density applications and offers a compact footprint.

Pinout

The 74LVC138ABQ is a 3-to-8 line decoder/demultiplexer with a total of 16 pins. Its primary function is to decode a 3-bit binary input into one of eight active low outputs, selecting one output line based on the input combination.
### Pin Count and Functions:
- Pin Count: 16 pins
- Pin Functions:
- Inputs: A0, A1, A2 (3 input pins for binary selection)
- Enable Inputs: G1 (active high), G2A, G2B (active low, used to enable the device)
- Outputs: Y0 to Y7 (8 outputs, active low)
- Ground: VSS (ground connection)
- Power Supply: VCC (power supply connection)
The device is designed for low-voltage applications and operates from 1.2V to 5.5V, making it suitable for various digital logic applications.

Manufacturer

The manufacturer of the 74LVC138ABQ is Texas Instruments (TI). Texas Instruments is a global semiconductor design and manufacturing company, known for its development of analog, embedded processing, and digital signal processing solutions. Founded in 1930, TI is headquartered in Dallas, Texas, and is one of the largest suppliers of semiconductor products worldwide. The company serves various industries, including automotive, communications, consumer electronics, industrial, and medical, providing innovative technologies for applications ranging from simple electronics to complex systems. The 74LVC138ABQ is a specific part number for a 3-to-8 line decoder/demultiplexer, commonly used in digital circuits for routing signals.

Application

The 74LVC138ABQ is a low-voltage, high-speed 3-to-8 line decoder/demultiplexer. It is commonly used in applications such as memory selection, peripheral device activation, data routing, and digital signal processing. Its features make it suitable for communication systems, microcontroller interfacing, and LED driving. The device's low power consumption and high-speed operation also allow for use in battery-powered devices and high-performance computing applications.

Equivalent

The equivalent products for the 74LVC138ABQ chip include the 74HC138, 74HCT138, and 74LVC138A, among others. These chips are also 3-to-8 line decoders/demultiplexers but may differ in voltage levels, power consumption, and logic families (e.g., TTL vs. CMOS). Always check the specific datasheets for detailed specifications and compatibility.

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