CD74HC125QPWRQ1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-Speed CMOS Logic, Quad 3-State Non-Inverting Buffer
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The CD74HC125QPWRQ1 is a quad non-inverting buffer with 3-state outputs. It is designed to be used as a line driver or buffer in various digital applications.
• Packaging/Quantity: This product is available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to Vcc
• Output Voltage: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 9 ns (typical)
• Output Drive Capability: ±24 mA at 5V

Detailed Pin Configuration

The CD74HC125QPWRQ1 has a total of 14 pins, which are arranged as follows:

___________ | | 1 | 1A | 14 Vcc 2 | 1Y | 13 4Y 3 | GND | 12 4A 4 | 2A | 11 3Y 5 | 2Y | 10 3A 6 | 3A | 9 2Y 7 | 3Y | 8 2A |___________|

Functional Features

• Quad non-inverting buffer with 3-state outputs
• High-speed CMOS logic for fast operation
• Wide operating voltage range (2V to 6V)
• Low power consumption
• Schmitt-trigger inputs for noise immunity
• Output drive capability of ±24 mA at 5V

Advantages and Disadvantages

Advantages

• Provides buffering and line driving capabilities in digital circuits
• High-speed operation allows for efficient data transfer
• 3-state outputs enable bus sharing and multi-drop applications
• Wide operating voltage range offers flexibility in various systems
• Schmitt-trigger inputs provide noise immunity

Disadvantages

• Limited output drive capability compared to some other buffer ICs
• Not suitable for high-voltage applications (above 6V)

Working Principles

The CD74HC125QPWRQ1 is a quad non-inverting buffer that amplifies and drives digital signals. It operates on the principle of CMOS logic, which uses complementary pairs of MOSFET transistors to achieve high-speed switching.

When an input signal is applied to one of the buffer's inputs (1A, 2A, 3A), it is amplified and inverted by the internal circuitry. The resulting output signal (1Y, 2Y, 3Y) is then driven to the corresponding output pin.

The 3-state outputs allow the buffer to be effectively disconnected from the bus or shared with multiple devices. This feature enables bus sharing and multi-drop applications, where multiple devices can be connected to a common bus without interfering with each other.

Detailed Application Field Plans

The CD74HC125QPWRQ1 is commonly used in various digital applications, including:

1. Microcontroller interfacing: It can be used to interface microcontrollers with external devices, such as sensors, actuators, and displays.
2. Data communication: It is suitable for driving signals in communication protocols like I2C, SPI, and UART.
3. Bus systems: It can be used to buffer and drive signals in bus systems, such as address buses, data buses, and control buses.
4. Level shifting: It can be employed for level shifting between different voltage domains in mixed-voltage systems.

Detailed and Complete Alternative Models

1. SN74HC125N: This is a similar quad non-inverting buffer IC from Texas Instruments. It has the same pin configuration and functional features as the CD74HC125QPWRQ1.
2. MC74HC125AN: Another alternative from ON Semiconductor, offering similar specifications and functionality.

These alternative models can be considered based on availability, pricing, and specific application requirements.

Word count: 529 words