規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | 74LCX |
| Part Status | Active |
| Type | Decoder/Demultiplexer |
| Circuit | 1 x 3:8 |
| Independent Circuits | 1 |
| Current - Output High Low | 24mA, 24mA |
| Voltage Supply Source | Single Supply |
| Voltage - Supply | 1.65V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
概述
Description
The 74LCX138FT is a high-speed CMOS 3-to-8 line decoder/demultiplexer integrated circuit. Designed by Toshiba, it is part of the LCX family known for low voltage and high performance. Operating within a voltage range of 2.0V to 3.6V, it is suitable for low-power applications. The device accepts three binary weighted address inputs (A0, A1, A2) and, based on these inputs, it activates one of its eight outputs (Y0 to Y7), enabling efficient decoding or demultiplexing tasks.
Key features include a low dynamic power consumption and a high noise immunity due to CMOS technology. The 74LCX138FT also has three enable inputs (two active low, one active high) which allows for cascading or expanding the decoding function, making it versatile for various logic applications. Its fast switching speeds and low power characteristics make it ideal for interfacing with TTL, NMOS, and CMOS logic. Applications typically include memory decoding and data routing in digital circuits. Its small package size makes it suitable for compact, space-constrained designs.
Key features include a low dynamic power consumption and a high noise immunity due to CMOS technology. The 74LCX138FT also has three enable inputs (two active low, one active high) which allows for cascading or expanding the decoding function, making it versatile for various logic applications. Its fast switching speeds and low power characteristics make it ideal for interfacing with TTL, NMOS, and CMOS logic. Applications typically include memory decoding and data routing in digital circuits. Its small package size makes it suitable for compact, space-constrained designs.
Equivalent
The 74LCX138FT is a low-voltage 3-to-8 line decoder/demultiplexer. Equivalent products include the 74HC138, 74LV138, SN74LVC138A, and SN74LV138A. These alternatives are offered by various manufacturers such as Texas Instruments, Nexperia, and ON Semiconductor. Ensure to check for voltage, power, and speed compatibility when selecting an equivalent to match specific application requirements.
Features
The 74LCX138FT is a high-speed CMOS 3-to-8 line decoder/demultiplexer with the following features:
1. High-Speed Operation: Designed for fast operation with a low propagation delay, making it suitable for high-performance applications.
2. Low Power Consumption: Operates with low power consumption due to CMOS technology, conserving energy in electronic circuits.
3. Wide Voltage Range: Supports a wide operating voltage range, typically from 2.0V to 3.6V, offering flexibility for various applications.
4. Output Capability: Features 8 active-low outputs with the ability to drive multiple loads.
5. Enable Inputs: Includes three enable inputs, allowing for easy control and expansion of decoder functions.
6. Noise Immunity: Exhibits strong noise immunity, making it robust in noisy environments.
7. Compact Package: Available in a small, surface-mount package, which is ideal for space-constrained designs.
8. ESD Protection: Built-in electrostatic discharge (ESD) protection enhances device reliability.
These features make the 74LCX138FT suitable for use in memory decoding, data routing, and other applications requiring efficient address decoding.
1. High-Speed Operation: Designed for fast operation with a low propagation delay, making it suitable for high-performance applications.
2. Low Power Consumption: Operates with low power consumption due to CMOS technology, conserving energy in electronic circuits.
3. Wide Voltage Range: Supports a wide operating voltage range, typically from 2.0V to 3.6V, offering flexibility for various applications.
4. Output Capability: Features 8 active-low outputs with the ability to drive multiple loads.
5. Enable Inputs: Includes three enable inputs, allowing for easy control and expansion of decoder functions.
6. Noise Immunity: Exhibits strong noise immunity, making it robust in noisy environments.
7. Compact Package: Available in a small, surface-mount package, which is ideal for space-constrained designs.
8. ESD Protection: Built-in electrostatic discharge (ESD) protection enhances device reliability.
These features make the 74LCX138FT suitable for use in memory decoding, data routing, and other applications requiring efficient address decoding.
Pinout
The 74LCX138FT is a high-speed CMOS 3-to-8 line decoder/demultiplexer. It comes in a 16-pin package. The pin configuration includes:
1. A0, A1, A2 (Pins 1, 2, 3): These are the address input pins used to select one of the eight outputs.
2. G1 (Pin 4): This is an active HIGH enable input.
3. G2A, G2B (Pins 5, 6): These are active LOW enable inputs.
4. Y0 to Y7 (Pins 7, 9, 10, 11, 12, 13, 14, 15): These are the active LOW outputs.
5. GND (Pin 8): Ground connection.
6. VCC (Pin 16): Supply voltage.
The device decodes the three binary inputs into one of eight binary outputs, with the remaining outputs set HIGH. It is used in applications that require high-speed decoding of binary data.
1. A0, A1, A2 (Pins 1, 2, 3): These are the address input pins used to select one of the eight outputs.
2. G1 (Pin 4): This is an active HIGH enable input.
3. G2A, G2B (Pins 5, 6): These are active LOW enable inputs.
4. Y0 to Y7 (Pins 7, 9, 10, 11, 12, 13, 14, 15): These are the active LOW outputs.
5. GND (Pin 8): Ground connection.
6. VCC (Pin 16): Supply voltage.
The device decodes the three binary inputs into one of eight binary outputs, with the remaining outputs set HIGH. It is used in applications that require high-speed decoding of binary data.
Manufacturer
The 74LCX138FT is manufactured by Toshiba Electronic Devices & Storage Corporation. This company is a subsidiary of Toshiba Corporation, which is a Japanese multinational conglomerate. Toshiba Electronic Devices & Storage Corporation specializes in the development, production, and marketing of electronic devices and storage solutions. It focuses on areas such as semiconductors, storage products, and electronic components, providing solutions for various industries, including consumer electronics, automotive, industrial, and communication sectors. The company is known for its innovation and technological advancements in the field of electronics.
Application
The 74LCX138FT is a high-performance CMOS 3-to-8 line decoder/demultiplexer. Its primary application areas include:
1. Microprocessor Systems: Used for address decoding to select memory banks or peripherals.
2. Data Routing: Acts as a demultiplexer in data communication systems.
3. Logic Function Implementation: Facilitates complex logic circuit designs.
4. Memory Selection: Useful in embedded systems for selecting specific memory segments.
5. Signal Distribution: Distributes clock or control signals to multiple points in a circuit.
6. Industrial Automation: Implements control logic in industrial applications.
These applications benefit from the device's low power consumption and high switching speed.
1. Microprocessor Systems: Used for address decoding to select memory banks or peripherals.
2. Data Routing: Acts as a demultiplexer in data communication systems.
3. Logic Function Implementation: Facilitates complex logic circuit designs.
4. Memory Selection: Useful in embedded systems for selecting specific memory segments.
5. Signal Distribution: Distributes clock or control signals to multiple points in a circuit.
6. Industrial Automation: Implements control logic in industrial applications.
These applications benefit from the device's low power consumption and high switching speed.
Package
The 74LCX138FT is typically available in TSSOP (Thin Shrink Small Outline Package) form, which is a compact surface-mount package ideal for applications requiring space efficiency on printed circuit boards.
