MC14018BDR2

Counter Dividers Overview

The MC14018BDR2G is a presettable divide-by-N counter and shift register from the 14018 logic series, manufactured by onsemi. It features five Johnson counter stages that are asynchronously presettable and resettable. The device operates as a synchronous counter, incrementing on the positive edge of the clock signal. It supports division ratios from 2 to 10 through specific Q-output connections to the data input. Key electrical parameters include a DC supply voltage range of -0.5 V to +18.0 V, an ambient operating temperature range of -55°C to +125°C, and propagation delays ranging from 620 ns to 170 ns depending on supply voltage.

Counter Dividers Feature Summary

• Fully static operation with Schmitt trigger on the clock input for noise immunity
• Asynchronous preset and reset capabilities allowing flexible counting sequences
• Integrated anti-lock gating to ensure proper counting sequence integrity
• Capable of driving two low-power TTL loads or one low-power Schottky TTL load

Counter Dividers Applications

• Frequency division circuits requiring divide-by-2 through divide-by-10 ratios
• Digital counters utilizing asynchronous preset and reset functions
• Shift register applications involving Johnson counter configurations
• Systems requiring pin-for-pin replacement for CD4018B components

Counter Dividers Procurement Notes

Verify the ordering suffix matches the required package type and tape/reel specifications. Confirm RoHS compliance status if lead-free packaging is mandatory for the assembly process. Ensure the component grade meets the specified temperature range requirements for the target application environment before finalizing procurement orders.

Counter Dividers Selection Notes

Select this component when a five-stage Johnson counter with asynchronous control is required. Consider the wide supply voltage range and high output drive capability for interfacing with various logic families. Evaluate the propagation delay characteristics against the system clock frequency to ensure timing margins are sufficient for the intended digital design application.

Counter Dividers Part Context

This part belongs to the MC14018B family of presettable counters. It is functionally compatible with standard CMOS logic families and offers a plastic SOIC-16 package option. The device is designed for general-purpose digital counting and frequency division tasks within industrial and commercial electronic systems requiring reliable static operation.

Counter Dividers Replacement Considerations

The datasheet explicitly identifies the MC14018B as a pin-for-pin replacement for the CD4018B. Designers should verify that the substitute component meets all electrical and mechanical specifications defined in the original design constraints.