MC74HC4538AFEL

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multivibrator
• Characteristics: High-speed, CMOS logic, dual retriggerable monostable multivibrator
• Package: SOIC-16
• Essence: The MC74HC4538AFEL is a versatile integrated circuit that can be used as a precision monostable multivibrator. It provides stable and accurate timing pulses for various applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 15 ns (typical)
• Trigger Voltage: 1.5V (minimum)
• Output Current: ±25mA
• Input Capacitance: 3.5pF (typical)

Pin Configuration

The MC74HC4538AFEL has a total of 16 pins arranged as follows:

__ __ A1 | 1 16 | VCC B1 | 2 15 | Q1 A2 | 3 14 | Q2 B2 | 4 13 | RESET GND | 5 12 | RCext C1 | 6 11 | Cext C2 | 7 10 | TRIGGER R1 | 8 9 | R2 --------

Functional Features

• Dual retriggerable monostable multivibrator with independent trigger and reset inputs.
• Provides precise timing control for various applications.
• Wide operating voltage range allows compatibility with different systems.
• High-speed CMOS logic ensures fast and accurate operation.
• Low power consumption makes it suitable for battery-powered devices.

Advantages

• Accurate and stable timing pulses.
• Versatile functionality with independent trigger and reset inputs.
• Wide operating voltage range allows compatibility with various systems.
• High-speed operation for time-critical applications.
• Low power consumption for energy-efficient designs.

Disadvantages

• Limited output current may not be suitable for driving high-power loads.
• Sensitivity to noise and interference in the input signals.
• Requires external components (resistors and capacitors) for precise timing control.

Working Principles

The MC74HC4538AFEL operates as a dual retriggerable monostable multivibrator. It generates a single pulse of a fixed duration when triggered by an external signal. The pulse width is determined by the values of external resistors and capacitors connected to the RCext and Cext pins. The device can be retriggered during the pulse width period, allowing for precise timing control.

Detailed Application Field Plans

The MC74HC4538AFEL finds applications in various fields where precise timing control is required. Some potential application areas include:

1. Timing circuits in digital systems.
2. Pulse generation for communication protocols.
3. Precision timing in industrial automation.
4. Delay circuits in audio and video equipment.
5. Sequential control in automotive electronics.

Alternative Models

1. CD4538BCN: Dual precision monostable multivibrator with similar functionality.
2. HEF4538BP: Dual retriggerable monostable multivibrator with different package options.
3. SN74HC4538N: High-speed CMOS logic dual retriggerable monostable multivibrator.

These alternative models provide similar features and can be considered as substitutes for the MC74HC4538AFEL.

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