MC14541BD

Programmable Timers And Oscillators Overview

The MC14541BD is a programmable timer IC manufactured by onsemi, housed in a SOIC-14 package. It integrates a 16-stage binary counter, an RC oscillator, and power-on reset logic. The device operates within a supply voltage range of 3.0 Vdc to 18 Vdc. Key electrical parameters include a maximum clock frequency of 3 MHz at 15 V and a typical quiescent current of 10 µA at 10 V with auto-reset disabled. The oscillator accuracy is specified at ±2% over the temperature range for frequencies below 10 kHz.

Programmable Timers And Oscillators Feature Summary

• Integrated 16-stage binary counter with selectable outputs at 2^8, 2^10, 2^13, or 2^16 stages via address inputs A and B.
• Built-in low-power RC oscillator with external timing components (Rtc, Ctc) or bypass capability for external clock input.
• Configurable output logic level flexibility through Q/Q select pin, determining initial output state after reset.
• Independent master reset and automatic power-on reset circuits that disable the oscillator during reset to minimize power dissipation.

Programmable Timers And Oscillators Applications

• Digital timer circuits requiring precise single-cycle or recycle mode operation.
• Frequency divider applications utilizing the internal counter stages.
• Systems requiring automatic initialization upon power-up without external reset circuitry.

Programmable Timers And Oscillators Procurement Notes

Verify component authenticity against onsemi specifications. Confirm package suffix 'D' corresponds to the SOIC-14 form factor. Check for RoHS compliance indicators such as the 'G' suffix if lead-free composition is required. Ensure storage conditions adhere to moisture sensitivity level guidelines prior to soldering.

Programmable Timers And Oscillators Selection Notes

Select this component when a CMOS programmable timer with integrated oscillator functionality is needed. Compare against alternatives if specific automotive qualification (NLV prefix) or tape-and-reel packaging is mandatory. Verify that the required output stage (2^8 to 2^16) aligns with the application's timing resolution needs.

Programmable Timers And Oscillators Part Context

The MC14541B series belongs to the 4000/14000/40000 family of CMOS logic devices. The 'BD' designation specifically identifies the SOIC-14 surface-mount variant. This part serves as a standalone timing solution, eliminating the need for separate oscillator and counter chips in basic timing control designs.

Programmable Timers And Oscillators Replacement Considerations

Compatible substitutes include other 4000-series compatible programmable timers from different manufacturers. Verify pin compatibility and electrical characteristics, particularly supply voltage ranges and output drive capabilities, before substitution.