MC74HC4538ADR2G

Product Overview

• Category: Integrated Circuit
• Use: Multivibrator
• Characteristics: High-speed CMOS, Dual Precision Monostable Multivibrator
• Package: SOIC-16
• Essence: The MC74HC4538ADR2G is a dual precision monostable multivibrator designed for general-purpose applications.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• High-Speed Operation: tPD = 12 ns (Typ) at VCC = 4.5V
• Low Power Dissipation: ICC = 1 µA (Max) at TA = 25°C
• Schmitt Trigger Inputs Allow for Slow Input Transition and Better Switching Noise Immunity
• Output Drive Capability: 10 LSTTL Loads
• Symmetrical Output Impedance: |IOH| = IOL = 4 mA (Min)
• Balanced Propagation Delays: tPLH ≅ tPHL
• Wide Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC74HC4538ADR2G has a total of 16 pins arranged as follows:

__ __ A1 -| 1 16 |- VCC B1 -| 2 15 |- Y1 A2 -| 3 14 |- Y2 B2 -| 4 13 |- Rext GND -| 5 12 |- Cext R1 -| 6 11 |- C1 R2 -| 7 10 |- C2 S1 -| 8 9 |- S2 ¯¯ ¯¯

Functional Features

• Dual monostable multivibrator with independent trigger and reset inputs.
• Each multivibrator has an active HIGH, negative-edge-triggered input, which allows triggering from either edge of an input pulse.
• The output pulse duration is determined by external resistors and capacitors connected to the timing pins.
• The device can be triggered and reset on the positive or negative transition of the input waveform.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick response times. - Low power dissipation ensures energy efficiency. - Schmitt trigger inputs provide better noise immunity. - Wide operating temperature range enables usage in various environments.

Disadvantages: - Limited output drive capability may restrict certain applications. - External resistors and capacitors are required for precise timing control.

Working Principles

The MC74HC4538ADR2G operates as a dual precision monostable multivibrator. It generates a single output pulse of a specified duration when triggered by an input signal. The output pulse width is determined by the values of external resistors and capacitors connected to the timing pins.

Detailed Application Field Plans

The MC74HC4538ADR2G finds application in various fields, including:

1. Timing circuits: The precise control over output pulse duration makes it suitable for timing applications such as clock synchronization and delay generation.
2. Pulse shaping: The device can be used to shape input pulses into desired output waveforms.
3. Frequency division: By utilizing the output pulse, frequency division circuits can be implemented.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MC74HC4538ADR2G include:

1. CD4538BCN: Dual Precision Monostable Multivibrator with Schmitt Trigger Inputs
2. HEF4538BP: Dual Precision Monostable Multivibrator with Schmitt Trigger Inputs
3. SN74HC4538N: Dual Precision Monostable Multivibrator

These alternatives can be considered based on specific requirements and availability.

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