74LCX125SJX

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: Low Voltage, Quad Buffer/Line Driver with 3-State Outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: This IC is designed to shift logic levels from a lower voltage level to a higher voltage level or vice versa.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: 2.4V (min) at IOH = -24mA
• Low-Level Output Voltage: 0.4V (max) at IOL = 24mA
• Maximum Quiescent Supply Current: 10µA at 3.6V
• Maximum Propagation Delay Time: 3.5ns at 3.3V

Detailed Pin Configuration

The 74LCX125SJX has a total of 14 pins, which are assigned as follows:

1. Pin 1: Input/Output (I/O) for Buffer 1
2. Pin 2: Input/Output (I/O) for Buffer 2
3. Pin 3: Ground (GND)
4. Pin 4: Input/Output (I/O) for Buffer 3
5. Pin 5: Enable (EN) for Buffer 1
6. Pin 6: Output Enable (OE)
7. Pin 7: Input/Output (I/O) for Buffer 4
8. Pin 8: Supply Voltage (VCC)
9. Pin 9: Output Enable (OE) for Buffer 1
10. Pin 10: Input/Output (I/O) for Buffer 4
11. Pin 11: Enable (EN) for Buffer 2
12. Pin 12: Enable (EN) for Buffer 3
13. Pin 13: Enable (EN) for Buffer 4
14. Pin 14: Not Connected (NC)

Functional Features

• Quad buffer/line driver with 3-state outputs.
• Provides voltage level shifting between different logic levels.
• Supports bidirectional data flow.
• Allows individual control of each buffer's output enable and input enable.
• Low power consumption.
• High-speed operation.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - 3-state outputs provide flexibility in connecting multiple devices. - Individual control of each buffer enhances system design flexibility. - Low power consumption helps conserve energy.

Disadvantages: - Limited number of buffers may restrict the number of signals that can be shifted simultaneously. - Propagation delay time may affect timing-sensitive applications.

Working Principles

The 74LCX125SJX operates by receiving input signals at its buffer inputs and shifting their logic levels to match the desired output voltage level. The enable pins allow individual control over each buffer, enabling or disabling their respective inputs and outputs. The 3-state outputs provide the ability to disconnect the outputs from the bus, allowing multiple devices to share the same bus without interference.

Detailed Application Field Plans

The 74LCX125SJX is commonly used in various applications, including:

1. Microcontroller interfacing: It facilitates communication between microcontrollers operating at different voltage levels.
2. Level shifting in mixed-voltage systems: It enables seamless integration of components with different logic voltage requirements.
3. Bus buffering: It helps in driving signals across buses with multiple devices connected.
4. Signal translation: It converts logic levels between different standards, such as TTL to CMOS.

Detailed and Complete Alternative Models

1. 74LVC125A: Similar quad buffer/line driver IC with 3-state outputs, but operates at a higher voltage range of 1.65V to 5.5V.
2. SN74LVC125A: Another alternative with similar functionality, operating at a voltage range of 1.65V to 5.5V.
3. MC74LCX125: Comparable IC offering logic level shifting capabilities, with a supply voltage range of 2V to 3.6V.

(Note: The above alternative models are provided for reference and may have slight variations in specifications and pin configuration.)

In conclusion, the 74LCX125SJX is a versatile logic level shifter IC that allows seamless integration of components operating at different voltage levels. Its quad buffer design, 3-state outputs, and individual control features make it suitable for various applications requiring voltage level translation and signal buffering.