SN74LV123ANSR

The SN74LV123ANSR is a dual retriggerable monostable multivibrator from Texas Instruments, designed for use in a variety of digital applications. This device is part of the 74LV family, which is known for its low-voltage operation and high-speed performance. Below is a detailed description of its features and specifications:

General Description:

• Type: Dual Retriggerable Monostable Multivibrator
• Package: The SN74LV123ANSR is typically available in a 14-pin SOIC (Small Outline Integrated Circuit) package, which is compact and suitable for surface mounting.
• Functionality: The device generates a single output pulse of a specified duration in response to an input trigger signal. It can be retriggered, meaning that if a new trigger signal is received before the output pulse has completed, the pulse duration will be extended.

Key Features:

• Voltage Range: The SN74LV123ANSR operates over a wide voltage range, typically from 2.0V to 5.5V, making it suitable for low-voltage applications.
• Speed: It offers fast response times, with propagation delays typically in the range of nanoseconds, allowing for high-speed operation in digital circuits.
• Retriggerable: The device can be retriggered, which is useful in applications where the timing of events is critical, such as in pulse width modulation (PWM) or timing applications.
• Output Configuration: The output is typically a standard CMOS output, capable of driving loads directly and providing a strong signal with low power consumption.
• Low Power Consumption: The LV (Low Voltage) designation indicates that the device is designed to operate with minimal power, making it ideal for battery-powered applications.

Pin Configuration:

• The SN74LV123ANSR has 14 pins, with specific pins designated for input triggers, output, and power supply connections. The typical pinout includes:
  • GND: Ground connection.
  • VCC: Power supply connection.
  • A and B: Trigger inputs for the two monostable circuits.
  • Q and Q': Output pins for the two circuits, where Q is the output and Q' is the inverted output.
  • Other pins: Additional pins for control functions, such as reset and timing adjustments.

Applications:

• The SN74LV123ANSR is widely used in various applications, including:
  • Timing circuits
  • Pulse generation
  • Frequency division
  • Event counting
  • Signal conditioning

Electrical Characteristics:

• Input Voltage Levels: The device is compatible with TTL (Transistor-Transistor Logic) levels, ensuring interoperability with other logic families.
• Temperature Range: It typically operates within a temperature range of -40°C to +125°C, making it suitable for industrial and automotive applications.

Conclusion:

The SN74LV123ANSR from Texas Instruments is a versatile and reliable component for generating precise timing pulses in digital circuits. Its low-voltage operation, fast response times, and retriggerable functionality make it an excellent choice for a wide range of electronic applications.