74HCT4538DB,112

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Multivibrator and Timer
• Characteristics: Dual precision monostable multivibrator with Schmitt-trigger inputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: High-speed CMOS technology
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: GND to VCC
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 20 ns (typical)

Detailed Pin Configuration

1. Pin 1: Control Voltage (CV)
2. Pin 2: Ground (GND)
3. Pin 3: Trigger (TR)
4. Pin 4: Reset (R)
5. Pin 5: Output (Q)
6. Pin 6: Threshold (TH)
7. Pin 7: Discharge (DIS)
8. Pin 8: VCC

Functional Features

• Dual monostable multivibrator with independent trigger and reset inputs
• Schmitt-trigger inputs for improved noise immunity
• Wide supply voltage range allows flexibility in various applications
• Low power consumption due to high-speed CMOS technology
• Output can source or sink up to 4 mA

Advantages and Disadvantages

Advantages

• Precise timing control for applications requiring accurate time delays
• Flexible triggering options with separate trigger and reset inputs
• Improved noise immunity with Schmitt-trigger inputs
• Wide operating temperature range for reliable performance in various environments

Disadvantages

• Limited output current capability may restrict use in certain high-power applications
• Requires external components for complete functionality
• Not suitable for applications requiring very long time delays

Working Principles

The 74HCT4538DB,112 is a dual monostable multivibrator that generates a pulse of a specific duration upon receiving a trigger signal. The duration of the output pulse is determined by the values of external resistors and capacitors connected to the control voltage (CV), threshold (TH), and discharge (DIS) pins. The trigger (TR) input initiates the timing cycle, while the reset (R) input can prematurely terminate the cycle.

Detailed Application Field Plans

The 74HCT4538DB,112 finds applications in various fields where precise timing control is required. Some common application areas include: 1. Timing circuits in electronic devices 2. Pulse width modulation (PWM) generation 3. Frequency division and counting circuits 4. Delay circuits in communication systems 5. Control systems requiring accurate time delays

Detailed and Complete Alternative Models

• CD4538BCN: Dual Precision Monostable Multivibrator
• MC14538B: Dual Precision Monostable Multivibrator with Schmitt-trigger Inputs
• HEF4538BP: Dual Monostable Multivibrator with Schmitt-trigger Inputs

These alternative models offer similar functionality and can be used as substitutes for the 74HCT4538DB,112 in various applications.

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