SN74HC126APWR

Product Overview

• Category: Integrated Circuit
• Use: Buffer/Driver
• Characteristics: High-speed, Non-Inverting, 3-State Output
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Quad Bus Buffer Gate with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 54 MHz
• Number of Inputs: 4
• Number of Outputs: 4
• Output Current: ±8mA
• Propagation Delay Time: 9 ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC126APWR has a total of 14 pins. The pin configuration is as follows:

1. OE (Output Enable) - Active Low Output Enable
2. 1A - Input A for Gate 1
3. 1Y - Output Y for Gate 1
4. GND - Ground
5. 2Y - Output Y for Gate 2
6. 2A - Input A for Gate 2
7. 3A - Input A for Gate 3
8. 3Y - Output Y for Gate 3
9. VCC - Positive Power Supply
10. 4A - Input A for Gate 4
11. 4Y - Output Y for Gate 4
12. GND - Ground
13. NC (No Connection)
14. OE (Output Enable) - Active Low Output Enable

Functional Features

• Non-Inverting Buffer/Driver
• 3-State Outputs for Bus Oriented Applications
• High-Speed Operation
• Wide Operating Voltage Range
• Balanced Propagation Delays
• Low Power Consumption
• ESD Protection Exceeds JESD 22

Advantages and Disadvantages

Advantages: - Non-inverting buffer allows easy interfacing between different logic families. - 3-state outputs enable bus-oriented applications. - High-speed operation allows for efficient data transfer. - Wide operating voltage range provides flexibility in various applications.

Disadvantages: - Limited output current may restrict usage in certain high-current applications. - Propagation delay time may affect timing-sensitive systems.

Working Principles

The SN74HC126APWR is a quad bus buffer gate with 3-state outputs. It acts as a non-inverting buffer, allowing the input signal to be replicated at the output without any phase inversion. The 3-state outputs provide an additional control signal (OE) that can disable the outputs, effectively disconnecting them from the bus. This feature is particularly useful in bus-oriented applications where multiple devices share a common bus.

Detailed Application Field Plans

The SN74HC126APWR finds applications in various fields, including:

1. Microcontroller Interfacing: It can be used to interface microcontrollers with other devices, such as sensors, actuators, or displays.
2. Data Communication: It is suitable for buffering and driving signals in communication systems, such as UART, SPI, or I2C interfaces.
3. Memory Systems: It can be utilized in memory systems to amplify and distribute address or data signals.
4. Industrial Automation: It finds use in industrial automation systems for signal conditioning and level shifting.
5. Automotive Electronics: It is employed in automotive electronics for signal buffering and driving in various subsystems.

Detailed and Complete Alternative Models

Some alternative models to SN74HC126APWR are:

1. SN74HCT126APWR: Similar to SN74HC126APWR, but with TTL input compatibility.
2. SN74LVC126APWR: Low-voltage version of SN74HC126APWR, compatible with 1.65V to 5.5V supply voltage range.
3. SN74AHC126PWR: Advanced high-speed CMOS version of SN74HC126APWR, with improved performance characteristics.

These alternative models offer similar functionality but may have variations in operating voltage range, speed, or input compatibility.

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