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CD4538 - Dual Precision Monostable Multivibrator IC

CD4538 - Dual Precision Monostable Multivibrator IC

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  • Wide supply voltage range 3.0V to 15V 
  • High noise immunity 0.45 VCC (typ.) 
  • Low power Fan out of 2 driving 74L TTL compatibility or 1 driving 74LS 
  • New formula: PWOUT e RC (PW in seconds, R in Ohms, C in Farads) 
  • g1.0% pulse-width variation from part to part (typ.) 
  • Wide pulse-width range 1 ms to % 
  • Separate latched reset inputs 
  • Symmetrical output sink and source capability 
  • Low standby current 5 nA (typ.) @ 5 VDC Y Pin compatible to CD4528

CD4538 - Dual Precision Monostable Multivibrator IC

The CD4538 IC is a dual, precision monostable multivibrator with independent trigger and reset controls. The device is re-triggerable and resettable, and the control inputs are internally latched. Two trigger inputs are provided to allow either rising or falling edge triggering. The reset inputs are active low and prevent triggering while active. Precise control of output pulse-width has been achieved using linear CMOS techniques.

The pulse duration and accuracy are determined by external components RX and CX. The device does not allow the timing capacitor to discharge through the timing pin on power-down conditions. For this reason, no external protection resistor is required in series with the timing pin. Input protection from static discharge is provided on all pins. 


Pinout of CD4538 - Dual Precision Monostable Multivibrator IC

Package Includes:

  • 1 x IC - CD4538


Part number CD4538
DC Supply Voltage (VDD) −0.5V to +18VDC
Input Voltage (VIN) −0.5V to VDD + 0.5VDC
Storage Temperature Range (TS) −65°C to +150°C
Power Dissipation (PD) Dual-In-Line 700 mW
Lead Temperature (TL) 260°C

Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

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