CD4541BCM

Overview

The CD4541BCM is a programmable timer integrated circuit manufactured by onsemi (formerly Fairchild Semiconductor). It features a 16-stage binary counter, an internal RC oscillator, and output control logic. The device operates within a supply voltage range of 3V to 15V and supports division ratios of 2^8, 2^10, 2^13, or 2^16. It includes automatic power-on reset and external master reset capabilities. The component is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• Built-in low power RC oscillator with frequency range from DC to 100 kHz
• Four digitally controlled division ratios: 2^8, 2^10, 2^13, and 2^16
• Automatic reset initializes counters upon power-up
• Q/Q select pin allows flexible output logic level configuration

Applications

• Frequency dividers
• Single transition timers
• Clock conditioning circuits for slow rise/fall times

Procurement Notes

Verify the manufacturer designation as onsemi, noting the historical association with Fairchild Semiconductor. Confirm the SOIC-14 package type (M14A) matches the specific application requirements. Ensure compliance with RoHS standards if applicable to the target market.

Selection Notes

Select this component when a CMOS programmable timer with high noise immunity and wide supply voltage tolerance is required. Consider the internal oscillator accuracy specifications (+/- 2% over temperature) against external clock needs. Verify that the 14-pin SOIC footprint fits the PCB layout constraints.

Part Context

This part belongs to the CD4541BC family of programmable timers. The 'M' suffix specifically denotes the 14-lead Small Outline Integrated Circuit (SOIC) package variant. Other variants include the PDIP package (CD4541BCN).

Replacement Considerations

Compatible alternatives include the MC14541B from ON Semiconductor and the HEF4541B from NXP Semiconductors. These parts share similar functional descriptions and pinouts.