CD4541BCN

Overview

The CD4541BC is a programmable timer IC featuring a 16-stage binary counter and an integrated RC oscillator. It operates on a single supply voltage ranging from 3V to 15V within a temperature range of -55°C to +125°C. The device provides four digitally controlled division ratios (2^8, 2^10, 2^13, or 2^16) selectable via address inputs A and B. It includes automatic power-on reset and external master reset capabilities, which disable the oscillator during initialization to minimize active power dissipation. The output logic allows for configurable initial states and supports both recycle and single-cycle modes.

Feature Summary

• Integrated low-power RC oscillator with frequency range from DC to approximately 100 kHz
• Four selectable division ratios: 2^8, 2^10, 2^13, and 2^16 determined by digital address inputs
• Dual reset functionality including automatic power-on reset and independent external master reset
• Configurable output control allowing selection of initial output state after reset

Applications

• Frequency division circuits requiring specific binary divisors
• Programmable timing systems utilizing internal RC oscillation
• Clock conditioning applications with slow rise and fall times
• Single-cycle timer implementations

Procurement Notes

Verify package configuration upon ordering; the 'N' suffix indicates a 14-lead Plastic Dual-In-Line Package (PDIP). Confirm manufacturer origin as Fairchild Semiconductor or authorized successor entities. Ensure compliance with specified operating conditions regarding supply voltage limits and input voltage thresholds to maintain electrical characteristics.

Selection Notes

Select this component when a fixed 16-stage counter with built-in oscillation is required. The CD4541BC supports external clocking at pin 3 if the internal oscillator is bypassed. Designers must account for the quiescent current variations across the full temperature range and supply voltage spectrum. The device requires external resistors and capacitors to set the oscillator frequency according to the specified RC network formulas.

Part Context

The CD4541BC belongs to the 4000B series of CMOS logic devices. It functions as a specialized timer and divider within this family. The part number suffix 'BC' typically denotes the specific process variant and performance ratings defined in the datasheet. Equivalent functional parts may exist under different manufacturer naming conventions but share the core 16-stage counter architecture.

Replacement Considerations

Direct replacements include variants such as MC14541 or CD4541BE, provided the package type matches the PCB footprint. Verify that substitute components support the same 3V to 15V supply range and -55°C to +125°C operating temperature. Check for identical pinout configurations to ensure compatibility without circuit modification.