SN74LV123ANSR

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator
• Characteristics: Low-voltage, dual retriggerable monostable multivibrator
• Package: SOP (Small Outline Package)
• Essence: Dual retriggerable monostable multivibrator with Schmitt-trigger inputs
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• Maximum Operating Frequency: 50MHz
• Propagation Delay Time: 6.5ns
• Trigger Pulse Width Range: 30ns to 1000ns
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74LV123ANSR has a total of 16 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW clear input
2. D (Data) - Data input
3. GND (Ground) - Ground reference point
4. Q (Output) - Output terminal
5. VCC (Positive Power Supply) - Positive power supply voltage
6. A (Trigger) - Trigger input
7. B (Threshold) - Threshold input
8. RCext (External Resistor/Capacitor) - External resistor/capacitor connection
9. RExt (External Resistor) - External resistor connection
10. Cext (External Capacitor) - External capacitor connection
11. Rext (External Resistor) - External resistor connection
12. Q (Output) - Output terminal
13. VCC (Positive Power Supply) - Positive power supply voltage
14. GND (Ground) - Ground reference point
15. D (Data) - Data input
16. CLR (Clear) - Active LOW clear input

Functional Features

The SN74LV123ANSR is a dual retriggerable monostable multivibrator with Schmitt-trigger inputs. It is designed to generate accurate output pulses of a specified duration upon the application of trigger pulses at its input. The device can be triggered by either a positive or negative edge, and it provides an active LOW clear input for immediate termination of the output pulse.

Advantages and Disadvantages

Advantages: - Low-voltage operation allows for compatibility with various systems - Dual retriggerable design provides flexibility in generating output pulses - Schmitt-trigger inputs ensure reliable triggering even in the presence of noise

Disadvantages: - Limited operating frequency compared to some other multivibrators - Requires external resistors and capacitors for proper operation

Working Principles

The SN74LV123ANSR operates based on the principles of a monostable multivibrator. When a trigger pulse is applied to the A input, the output Q goes HIGH for a duration determined by the external resistor and capacitor connected to pins RCext and Cext, respectively. The output remains HIGH until a new trigger pulse is received or the clear input (CLR) is activated.

Detailed Application Field Plans

The SN74LV123ANSR finds applications in various fields, including:

1. Timing circuits: The device is commonly used in timing circuits where precise pulse generation is required.
2. Communication systems: It can be utilized in communication systems for synchronization purposes.
3. Industrial automation: The multivibrator is suitable for controlling timing sequences in industrial automation processes.
4. Instrumentation: It can be employed in instrumentation systems for generating accurate timing signals.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74LV123ANSR include:

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

These alternatives can be considered based on specific requirements and compatibility with the system.

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