SN74LV123ATPWREP

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multivibrator
• Characteristics: Low-voltage, dual retriggerable monostable multivibrator
• Package: TSSOP (Thin Shrink Small Outline Package)
• 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
• Trigger Schmitt Inputs: TTL-Compatible
• Output Drive Capability: 10 LSTTL Loads
• Propagation Delay Time: 6 ns (typical)
• Power Dissipation: 25 mW (typical)

Detailed Pin Configuration

The SN74LV123ATPWREP has a total of 16 pins, which are assigned as follows:

1. CLR (Clear) - Active low clear input
2. A (Trigger) - Positive edge-triggered input
3. B (Trigger) - Negative edge-triggered input
4. RCext (External Resistor/Capacitor) - External resistor/capacitor connection pin
5. VCC (Positive Power Supply) - Positive power supply pin
6. GND (Ground) - Ground reference pin
7. Q (Output) - Monostable output
8. Q̅ (Complementary Output) - Complementary output
9. NC (No Connection) - No electrical connection
10. NC (No Connection) - No electrical connection
11. NC (No Connection) - No electrical connection
12. NC (No Connection) - No electrical connection
13. NC (No Connection) - No electrical connection
14. NC (No Connection) - No electrical connection
15. NC (No Connection) - No electrical connection
16. NC (No Connection) - No electrical connection

Functional Features

• Dual retriggerable monostable multivibrator
• Wide supply voltage range for compatibility with various systems
• Schmitt trigger inputs ensure noise immunity and reliable triggering
• Output drive capability suitable for driving multiple LSTTL loads
• Fast propagation delay time for precise timing applications
• Low power dissipation for energy-efficient operation

Advantages and Disadvantages

Advantages: - Dual retriggerable design allows for flexible timing control - Wide supply voltage range enables compatibility with different power sources - Schmitt trigger inputs provide robust noise immunity - High output drive capability ensures reliable signal transmission - Fast propagation delay time allows for accurate timing operations - Low power dissipation results in energy-efficient performance

Disadvantages: - Limited to monostable multivibrator functionality - TSSOP package may require careful handling during assembly

Working Principles

The SN74LV123ATPWREP is a dual retriggerable monostable multivibrator IC. It generates a pulse of a fixed duration when triggered by an input signal. The duration of the output pulse is determined by the external resistor and capacitor connected to the RCext pin. The IC operates on a wide supply voltage range, making it suitable for various electronic systems.

When a trigger signal is applied to either the A or B input, the output Q transitions to a high state for the duration determined by the RCext components. If another trigger signal is received before the completion of the current pulse, the output pulse is extended, effectively retriggering the multivibrator. The CLR input can be used to clear the output and terminate the pulse prematurely.

Detailed Application Field Plans

The SN74LV123ATPWREP finds applications in various fields where precise timing control is required. Some potential application areas include:

1. Timing circuits in microcontrollers and digital systems
2. Pulse width modulation (PWM) generation for motor control
3. Frequency division and clock synchronization in communication systems
4. Delay generation for signal processing and data transmission
5. Precision timing in test and measurement equipment

Detailed and Complete Alternative Models

1. CD74HC123E - High-speed CMOS dual retriggerable monostable multivibrator
2. MC14538B - Dual precision monostable multivibrator with Schmitt trigger inputs
3. HEF4538BP - Dual precision monostable multivibrator with reset
4. 74HCT123D - Dual retriggerable monostable multivibrator with Schmitt-trigger inputs

These alternative models offer similar functionality and can be considered as substitutes for the SN74LV123ATPWREP in various applications.

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