74HC423BQ,115

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: High-speed, CMOS technology
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Dual retriggerable monostable multivibrator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 20 ns (typical)
• Trigger Pulse Width: 10 ns (minimum)

Detailed Pin Configuration

The 74HC423BQ,115 IC has a total of 16 pins. The pin configuration is as follows:

1. MR (Master Reset)
2. TR1 (Trigger 1)
3. Q1 (Output 1)
4. GND (Ground)
5. Q2 (Output 2)
6. TR2 (Trigger 2)
7. RCext (External Resistor/Capacitor)
8. VCC (Supply Voltage)
9. Q3 (Output 3)
10. TR3 (Trigger 3)
11. Q4 (Output 4)
12. TR4 (Trigger 4)
13. CT (Control Voltage)
14. nOE (Output Enable)
15. nCE (Chip Enable)
16. CP (Clock Pulse)

Functional Features

• Retriggerable operation with four independent monostable multivibrators
• Each multivibrator can be triggered individually or simultaneously
• Wide operating voltage range allows for compatibility with various systems
• Low power consumption due to CMOS technology
• Schmitt-trigger action on all inputs ensures noise immunity

Advantages and Disadvantages

Advantages: - Retriggerable operation provides flexibility in timing applications - Independent triggering of each multivibrator allows for complex timing sequences - Wide operating voltage range enables compatibility with different power supply systems - Low power consumption makes it suitable for battery-powered devices - Noise immunity due to Schmitt-trigger action ensures reliable operation

Disadvantages: - Limited number of multivibrators (four) may not be sufficient for certain applications requiring more channels - Propagation delay time may affect timing accuracy in high-speed applications

Working Principles

The 74HC423BQ,115 is a dual retriggerable monostable multivibrator. It consists of four independent monostable multivibrators that can be triggered individually or simultaneously. Each multivibrator generates an output pulse of a fixed duration upon receiving a trigger signal. The duration of the output pulse is determined by an external resistor and capacitor connected to the RCext pin.

The multivibrators can be retriggered during the output pulse period, allowing for flexible timing control. The IC operates using CMOS technology, which provides high speed and low power consumption. The Schmitt-trigger action on all inputs ensures noise immunity, making it suitable for use in various digital logic applications.

Detailed Application Field Plans

The 74HC423BQ,115 IC finds applications in various fields, including:

1. Timing circuits: The retriggerable feature allows precise timing control in applications such as timers, clocks, and frequency dividers.
2. Pulse generation: The monostable multivibrators can generate accurate pulses for applications like pulse-width modulation (PWM), pulse position modulation (PPM), and pulse shaping.
3. Sequential logic: The independent triggering capability enables the creation of complex sequential logic circuits, such as counters and shift registers.
4. Control systems: The IC can be used in control systems that require precise timing, such as motor control, robotics, and industrial automation.

Detailed and Complete Alternative Models

1. CD74HC423E: Similar functionality with a different package (DIP-16)
2. SN74HC423N: Equivalent IC from Texas Instruments with the same features (DIP-16)
3. MC74HC423AN: Alternative IC from ON Semiconductor with comparable specifications (DIP-16)
4. 74HCT423: Similar IC with TTL compatibility (SOIC-16)

These alternative models provide similar functionality and can be used as replacements for the 74HC423BQ,115 in various applications.

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