CD4047BCM

Multivibrators Overview

The CD4047BCM is a low-power monostable/astable multivibrator manufactured by Fairchild Semiconductor, distributed under the onsemi brand. It operates in either mode using a single external resistor and capacitor connected to pins 2 and 3. The device provides true and complemented buffered outputs at Q and Q, with an additional oscillator output available at pin 13 that runs at twice the frequency of the main outputs. It supports positive- or negative-edge triggering for monostable operation and includes retriggerable functionality for pulse width expansion.

Multivibrators Feature Summary

• Supports both free-running astable and triggered monostable operating modes
• Provides true and complemented buffered outputs alongside a dedicated oscillator output
• Features retriggerable input capability for extending output pulse widths
• Compatible with TTL logic families including 74L and 74LS

Multivibrators Applications

• Frequency discriminators
• Timing circuits
• Time-delay applications
• Envelope detection
• Frequency multiplication and division

Multivibrators Procurement Notes

Verify the specific ordering code suffix against the manufacturer's current documentation to confirm package type and availability. Confirm RoHS compliance status and check for any recent product change notices (PCN) regarding manufacturing origin or material composition before finalizing procurement specifications.

Multivibrators Selection Notes

Select this component when a low-power CMOS solution is required for precise timing or frequency generation. Ensure the external RC network values are chosen within the recommended resistance and capacitance ranges to maintain accuracy. Verify that the supply voltage range aligns with the system requirements and that the SOIC-14 package fits the PCB layout constraints.

Multivibrators Part Context

This part belongs to the CD4047B series of low-power monostable/astable multivibrators. It is functionally equivalent to parts from other manufacturers such as Texas Instruments and National Semiconductor. The 'BCM' designation specifically identifies the 14-lead Small Outline Integrated Circuit (SOIC) package variant.

Multivibrators Replacement Considerations

Direct functional equivalents include the CD4047BCN (PDIP package) and cross-manufacturer parts like the MC14047B or HCF4047B. Verify pin compatibility and package dimensions when substituting.