MM74HC126SJ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate Buffer/Driver
• Characteristics: High-Speed, Quad 3-State Non-Inverting Buffer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Buffering and driving signals in digital circuits
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Quiescent Supply Current: 4µA
• Maximum Propagation Delay Time: 14ns
• Maximum Operating Frequency: 33MHz

Pin Configuration

The MM74HC126SJ has a total of 14 pins, which are labeled as follows:

1. 1Y
2. 1A
3. 1B
4. 1OE
5. GND
6. 2OE
7. 2B
8. 2A
9. 2Y
10. VCC
11. 3Y
12. 3A
13. 3B
14. 3OE

Functional Features

• Quad 3-state non-inverting buffer with high-speed performance
• Provides buffering and driving capabilities for digital signals
• Allows multiple inputs to be connected to a single output line
• Enables easy expansion of digital circuitry
• Supports bidirectional data flow

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient signal processing - 3-state outputs provide flexibility in controlling signal flow - Wide supply voltage range allows for compatibility with various systems - Small package size saves board space

Disadvantages: - Limited output current capability may restrict use in certain applications - Propagation delay time may introduce timing issues in high-frequency circuits

Working Principles

The MM74HC126SJ is based on CMOS (Complementary Metal-Oxide-Semiconductor) technology. It consists of four independent non-inverting buffer gates, each capable of driving a 3-state output. The inputs are compatible with TTL (Transistor-Transistor Logic) and CMOS logic levels. When the output enable (OE) input is low, the corresponding buffer gate is active and transfers the input signal to the output. When OE is high, the output is in a high-impedance state, effectively disconnecting it from the circuit.

Detailed Application Field Plans

The MM74HC126SJ is commonly used in various digital systems and applications, including:

1. Microcontrollers and microprocessors
2. Data communication systems
3. Memory interfaces
4. Industrial automation
5. Automotive electronics
6. Consumer electronics

Alternative Models

1. SN74HC126N: Similar quad 3-state non-inverting buffer IC from Texas Instruments
2. CD74HC126E: Quad 3-state non-inverting buffer IC from Texas Instruments
3. MC74HC126AN: Quad 3-state non-inverting buffer IC from ON Semiconductor

These alternative models offer similar functionality and can be used as substitutes for the MM74HC126SJ in various applications.

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