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SN74LV138ADR

Name: SN74LV138ADR
Rating: 4.7 (12 reviews)

IC DECODER/DEMUX 1 X 3:8 16-SOIC

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資料表 SN74LV138ADR DataSheet
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規格

Series	74LV
Part Status	Active
Base Product Number	74LV138
Type	Decoder/Demultiplexer
Circuit	1 x 3:8
Independent Circuits	1
Current - Output High, Low	12mA, 12mA
Voltage Supply Source	Single Supply
Voltage - Supply	2V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package	16-SOIC

概述

Description

The SN74LV138ADR is a 3-to-8 line decoder/demultiplexer designed for low-voltage applications. It converts a 3-bit binary input into one of eight active low outputs, enabling efficient data routing in digital circuits. This device operates within a voltage range of 2V to 5.5V and features fast propagation delays, typically around 15 ns at 5V, making it suitable for high-speed applications.
The SN74LV138ADR has three enable inputs (G1, G2A, G2B) that allow control over the device's activation, ensuring that it operates only when needed. The outputs are active low, meaning that the selected output will go low while all others remain high. This functionality is crucial in memory decoding, data multiplexing, and controlling multiple devices with minimal wiring.
The package type is typically a SOIC-16, providing a compact footprint for space-constrained designs. Overall, the SN74LV138ADR is a versatile and reliable component for modern digital circuits requiring efficient signal decoding.

Features

The SN74LV138ADR is a 3-to-8 line decoder/demultiplexer featuring the following key attributes:
1. Logic Levels: Operates at low voltage (2.7V to 5.25V) with high-speed performance.
2. Inputs: Has three binary inputs (A0, A1, A2) that decode to one of eight active low outputs (Y0 to Y7).
3. Enable Inputs: Two active-low enable inputs (G1, G2A, G2B) allow for control over the device's operation.
4. High Fan-Out: Each output can drive up to 10 LSTTL loads.
5. Low Power Consumption: Suitable for battery-operated devices due to low static and dynamic power consumption.
6. Application Use: Ideal for data routing, memory address decoding, and various digital applications.
7. Package: Available in a 16-pin SOIC package for easy integration into circuits.
This device is widely used in various electronic applications requiring address decoding or data demultiplexing.

Package

The SN74LV138ADR is available in a 16-pin SOIC (Small Outline Integrated Circuit) package. It features a compact design suitable for surface mounting, making it ideal for applications with space constraints.

Pinout

The SN74LV138ADR is a 3-to-8 line decoder/demultiplexer with a pin count of 16. It is designed to decode a 3-bit binary input (A0, A1, A2) into one of eight outputs (Y0 to Y7), with the selected output going low while all others remain high.
Key functions include:
- Inputs (A0, A1, A2): 3 binary input lines.
- Enable Inputs (G1, G2A, G2B): Control lines used to enable or disable the device; G1 must be high while G2A and G2B must be low for the decoder to operate.
- Outputs (Y0 to Y7): Eight outputs where one output corresponds to the binary value of the inputs.
- Active Low Outputs: The selected output is active low (0), and the unselected outputs are high (1).
This device operates at a wide voltage range, making it suitable for various digital applications in low-voltage environments.

Manufacturer

The SN74LV138ADR is manufactured by Texas Instruments (TI), a leading American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits, which are widely used in electronic devices. The company is well-known for its innovation in analog and digital signal processing, embedded processing, and microcontrollers. Texas Instruments serves a diverse range of industries, including automotive, industrial, communications, and consumer electronics, providing solutions that enable advanced functionalities in a variety of applications.

Application

The SN74LV138ADR is a 3-to-8 line decoder/demultiplexer used in various applications such as memory address decoding, data routing, and signal multiplexing. It enables the selection of one of eight outputs based on a 3-bit binary input, commonly utilized in digital circuits, microcontroller interfacing, and communication systems. Its low-voltage compatibility makes it suitable for portable devices and low-power applications.

Equivalent

Equivalent products to the SN74LV138ADR include the 74HC138, 74HCT138, and 74LS138. These chips are all 3-to-8 line decoders/demultiplexers but may differ in voltage levels and speed. Always check the specific requirements of your application for compatibility.