74HC123BQ-Q100,115

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multivibrator and Monostable Multivibrator
• Characteristics: High-speed operation, low power consumption, wide operating voltage range
• Package: BQFN (Quad Flat No-Lead) package
• Essence: Dual retriggerable monostable multivibrator
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 6 V
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 20 ns (typical)
• Trigger Pulse Width Range: 30 ns to 1000 ns
• Output Current: ±4 mA
• Input Capacitance: 3.5 pF (typical)

Pin Configuration

The 74HC123BQ-Q100,115 IC has a total of 16 pins. The pin configuration is as follows:

1. CLR (Clear)
2. A (Trigger Input)
3. B (Retrigger Input)
4. GND (Ground)
5. RCext (External Resistor/Capacitor)
6. Qn (Negative Output)
7. Q (Positive Output)
8. VCC (Supply Voltage)
9. NC (No Connection)
10. NC (No Connection)
11. NC (No Connection)
12. NC (No Connection)
13. NC (No Connection)
14. NC (No Connection)
15. NC (No Connection)
16. NC (No Connection)

Functional Features

• Dual retriggerable monostable multivibrator with independent trigger and retrigger inputs
• Can be used as a precision pulse generator or time delay generator
• Provides accurate output pulse width control through external resistor and capacitor
• Offers a wide range of trigger pulse widths for flexible operation

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick response times - Low power consumption helps in energy-efficient designs - Wide operating voltage range provides flexibility in various applications - Retriggerable feature enables continuous pulse generation

Disadvantages: - Limited output current may restrict use in certain high-power applications - Input capacitance can affect the overall performance in high-frequency circuits

Working Principles

The 74HC123BQ-Q100,115 is a dual retriggerable monostable multivibrator. It generates a single output pulse of a specific width when triggered by an input signal. The pulse width is determined by an external resistor and capacitor connected to the RCext pin. The IC can be triggered and retriggered independently, allowing for precise control over the output pulse width.

Detailed Application Field Plans

The 74HC123BQ-Q100,115 IC finds applications in various fields, including:

1. Timing circuits: Used as a precision pulse generator or time delay generator in applications such as timers, clocks, and frequency dividers.
2. Communication systems: Employed in data transmission systems to generate accurate timing signals.
3. Industrial automation: Utilized in control systems for generating precise timing pulses in industrial processes.
4. Automotive electronics: Integrated into automotive systems for functions like engine control, lighting control, and sensor interfacing.

Alternative Models

Here are some alternative models that offer similar functionality:

1. CD74HC123E: Dual retriggerable monostable multivibrator in a DIP (Dual Inline Package) format.
2. SN74HC123N: Dual retriggerable monostable multivibrator in a PDIP (Plastic Dual Inline Package) format.
3. MC74HC123AN: Dual retriggerable monostable multivibrator in a PDIP (Plastic Dual Inline Package) format.

These alternative models can be considered based on specific requirements and availability.

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