CD4538 Dual Precision Monostable Multivibrator IC SMD Package

CD4538 Dual Precision Monostable Multivibrator IC SMD Package

The CD4538 is a dual precision monostable multivibrator integrated circuit in an SMD (Surface-Mount Device) package. It contains two independent precision one-shot circuits that generate a single output pulse of a defined width in response to an input trigger. Designed for reliable timing and pulse-generation applications, the CD4538 is widely used in digital and analog interface circuits where accurate pulse timing is essential.

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Key Features

• Dual precision monostable multivibrator: Two independent one-shot circuits in one IC
• SMD package: Compact surface-mount form factor suitable for space-constrained designs
• Wide supply voltage range: Typically operates from 3 V to 15 V
• Trigger input: Can be triggered on rising or falling edges
• Adjustable timing: Output pulse width set by external resistor and capacitor (RC network)
• Low static power consumption: Typical CMOS efficiency
• Complementary outputs: Both normal and inverted outputs available (on some variants)
• High noise immunity: Typical of CMOS logic families
• Standard-compliant logic levels: Works well with TTL and CMOS systems

Typical Applications

• Pulse generation (e.g., one-shot pulses)
• Debouncing mechanical switches and contact bounce filtering
• Timing circuits (delays, time-outs, delayed gating)
• Frequency and period measurement interfaces
• Clock pulse shaping and conditioning
• Monostable trigger circuits in digital logic
• Microcontroller or FPGA peripheral interfaces
• General timing and control in consumer, industrial, and communication equipment

cd4538-ic-datasheet