40163BDM

Overview

The CD40163BDM is a CMOS synchronous programmable 4-bit binary counter manufactured by National Semiconductor. It features a synchronous clear input that sets all four outputs low on the next positive clock edge when activated. The device includes internal look-ahead for fast counting and a carry output suitable for cascading multiple counters. It operates with low power TTL compatibility and standardized symmetrical output characteristics, ensuring reliable performance across various digital logic applications.

Feature Summary

• Synchronous programmable 4-bit binary counting capability
• Synchronous clear function controlled by clock edge
• Internal look-ahead mechanism for high-speed operation
• Dedicated carry output terminal for multi-stage expansion

Applications

• Digital frequency division circuits
• Event counting systems
• Timing sequence generation modules
• Cascaded counter arrays for extended range

Procurement Notes

Verify the manufacturer origin as National Semiconductor or its successor Texas Instruments. Confirm the package type matches the DM suffix specifications. Ensure the component meets required industrial or commercial temperature grades. Check for authenticity markers to avoid counterfeit devices. Validate pinout compatibility with existing PCB footprints before integration.

Selection Notes

Select this component when synchronous reset behavior is required rather than asynchronous clearing. Consider the internal look-ahead feature if circuit speed is a priority over other 4000-series alternatives. Evaluate the carry output requirement for potential cascading needs. Compare power consumption metrics against specific application constraints. Verify voltage supply ranges align with system design parameters.

Part Context

This part belongs to the CD4000 series of CMOS digital logic integrated circuits. It is specifically designed as a 4-bit binary counter within this family. The series is known for wide voltage operation and low power consumption. It serves as a fundamental building block for sequential logic designs in consumer and industrial electronics.

Replacement Considerations

CD40163BMS is a verified equivalent from Intersil Corporation offering identical functional specifications.