4040BDM

Overview

The 4040BDM is a 12-stage binary counter integrated circuit manufactured by National Semiconductor. It functions as a ripple counter designed for digital logic applications requiring frequency division, counting operations, and timing control. The component operates within standard CMOS logic families and supports asynchronous serial input for cascading stages. It features a dedicated reset input to clear all flip-flops simultaneously. The device is housed in a dual in-line package suitable for through-hole mounting on printed circuit boards.

Feature Summary

• Provides 12-stage binary counting capability for digital signal processing
• Supports frequency division and timing control functions
• Includes asynchronous reset mechanism for immediate state clearing

Applications

• Digital frequency dividers
• Binary counting circuits
• Timing control systems

Procurement Notes

Verify the manufacturer origin as National Semiconductor, noting that Texas Instruments acquired the company. Confirm RoHS status compliance requirements, as specific listings indicate non-compliance with certain directives. Check humidity sensitivity level (MSL) ratings for storage and handling protocols. Ensure the package type matches design constraints. Validate part authenticity against official distributor channels to avoid counterfeit components.

Selection Notes

Select this component when a 12-stage binary counter is required for basic digital logic applications. Consider the CMOS technology characteristics for power consumption and voltage levels. Evaluate the need for asynchronous reset functionality. Verify compatibility with existing clock signals and output load requirements. Assess packaging suitability for the target PCB assembly process.

Part Context

This component belongs to the 4000-series CMOS logic family, widely used in general-purpose digital electronics. National Semiconductor was a major producer of such logic ICs before its acquisition by Texas Instruments. The 4040 series specifically provides high-stage count capabilities compared to smaller counters like the 4017 or 4020. These parts remain relevant for legacy system maintenance and simple digital design tasks.

Replacement Considerations

Check for direct pin-compatible equivalents from Texas Instruments if sourcing from current inventories. Verify electrical specifications match exactly, particularly supply voltage ranges and output drive capabilities. Ensure functional equivalence in terms of stage count and reset behavior. Consult updated datasheets for any parameter variations introduced after corporate transitions.