CD4538BCMX

Multivibrators Overview

The CD4538BCMX is a dual precision monostable multivibrator manufactured by Fairchild Semiconductor, now part of onsemi. It features independent trigger and reset controls with internally latched inputs. The device supports retriggering and resetting, utilizing linear CMOS techniques for precise pulse-width control determined by external components RX and CX. It operates within a supply voltage range of 3.0V to 15V and provides symmetrical output sink and source capabilities.

Multivibrators Feature Summary

• Dual precision monostable multivibrator with independent trigger and reset controls
• Retriggerable and resettable functionality with internally latched control inputs
• Supports both rising and falling edge triggering via two dedicated trigger inputs
• Low standby current consumption with high noise immunity

Multivibrators Applications

• Timing delay circuits
• Pulse width modulation generation
• Frequency division applications
• Timer circuits requiring precise duration control

Multivibrators Procurement Notes

Verify the ordering code suffix 'X' indicates tape and reel packaging as specified in the datasheet. Confirm the manufacturer origin from Fairchild Semiconductor or its successor entities like onsemi. Ensure the component matches the SOIC-16 package description M16A for accurate integration into surface mount designs.

Multivibrators Selection Notes

Select this component when dual monostable functions are required in a single package. Consider the wide supply voltage range and low power consumption for battery-operated systems. Verify compatibility with TTL logic levels if interfacing with legacy digital circuits. Ensure external timing components meet leakage requirements for desired pulse widths.

Multivibrators Part Context

This device belongs to the CD4538 family of dual precision monostables. It is pin-compatible with the CD4528BC, allowing for potential design upgrades or replacements without layout changes. The series utilizes linear CMOS technology to achieve precise pulse-width accuracy and stability across temperature variations.

Multivibrators Replacement Considerations

CD4538BCM (SOIC-16 Narrow Body)

Multivibrators FAQ

How is the output pulse width determined?

The pulse duration and accuracy are determined by external timing components RX and CX, following the formula PWOUT = RC.

Can the device be retriggered during an active pulse?

Yes, the CD4538BC is retriggerable; a valid trigger occurring before the Q output returns to the quiescent state will extend the output pulse width.