SN74LV123ARGYRG4

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator and Monostable Multivibrator
• Characteristics: Low-voltage, dual retriggerable monostable multivibrator
• Package: 16-pin VQFN (Very Thin Quad Flat No-Lead)
• Essence: Reliable timing solution for various electronic applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 7 ns
• Trigger Pulse Width Range: 30 ns to 1000 ns
• Trigger Input Current: ±1 µA
• Output Drive Capability: ±24 mA
• Power Dissipation: 25 mW

Detailed Pin Configuration

The SN74LV123ARGYRG4 has a total of 16 pins arranged as follows:

1. CLR (Clear) - Active-low clear input
2. A (Trigger) - Positive trigger input
3. B (Retrigger) - Positive retrigger input
4. GND (Ground) - Ground reference
5. Q (Output) - Monostable output
6. VCC (Supply Voltage) - Positive power supply
7. RCext (External Resistor/Capacitor) - External resistor/capacitor connection for timing control
8. RBext (External Resistor) - External resistor connection for timing control
9. RBext (External Resistor) - External resistor connection for timing control
10. RBext (External Resistor) - External resistor connection for timing control
11. RBext (External Resistor) - External resistor connection for timing control
12. RBext (External Resistor) - External resistor connection for timing control
13. RBext (External Resistor) - External resistor connection for timing control
14. RBext (External Resistor) - External resistor connection for timing control
15. RBext (External Resistor) - External resistor connection for timing control
16. VCC (Supply Voltage) - Positive power supply

Functional Features

• Dual retriggerable monostable multivibrator with independent trigger and retrigger inputs
• Wide operating voltage range allows compatibility with various systems
• Low power consumption and high noise immunity
• Output pulse width determined by external resistor and capacitor
• Clear input for immediate termination of output pulse
• Schmitt-trigger inputs for improved noise rejection

Advantages and Disadvantages

Advantages: - Flexible timing control with external resistor and capacitor - Reliable operation in a wide range of voltage and temperature conditions - Low power consumption for energy-efficient designs - High noise immunity ensures stable performance in noisy environments

Disadvantages: - Limited output drive capability may require additional buffering for certain applications - External components (resistor and capacitor) are required for proper operation, increasing complexity

Working Principles

The SN74LV123ARGYRG4 is a dual retriggerable monostable multivibrator that generates a single output pulse of a specific duration when triggered. The output pulse width is determined by an external resistor and capacitor connected to the RCext pin. The device can be triggered using the A input and retriggered using the B input, allowing for flexible timing control.

Upon triggering, the output Q goes high for a duration determined by the RC time constant. If a retrigger pulse is received before the output pulse ends, the output pulse is extended, ensuring that the output remains high until the retrigger pulse ends. The clear input CLR can be used to immediately terminate the output pulse.

The device operates with a wide supply voltage range and incorporates Schmitt-trigger inputs for improved noise rejection, ensuring reliable operation in various electronic systems.

Detailed Application Field Plans

The SN74LV123ARGYRG4 is widely used in applications that require precise timing control, such as:

1. Pulse-width modulation (PWM) circuits
2. Frequency generators
3. Time delay circuits
4. Timing synchronization in communication systems
5. Industrial automation and control systems
6. Automotive electronics
7. Medical equipment
8. Consumer electronics

The device's ability to generate accurate and adjustable output pulses makes it suitable for a broad range of applications where timing is critical.

Detailed and Complete Alternative Models

1. CD74HC123E - High-speed CMOS dual retriggerable monostable multivibrator
2. MC14538B - Dual precision monostable multivibrator
3. 74HC123D - Dual retriggerable monostable multivibrator with Schmitt-trigger inputs
4. CD4098BE - Dual precision monostable multivibrator with reset
5. HEF4538BP - Dual retriggerable precision