74HC161DB,118

Counter Dividers Overview

The Nexperia 74HC161DB,118 is a synchronous presettable 4-bit binary counter with an asynchronous reset and internal look-ahead carry. It operates on a positive-edge triggered clock and supports parallel data loading via the PE input. The device features two count enable inputs (CEP and CET) for cascading and provides a terminal count output. It complies with JEDEC standards JESD8C and JESD7A, offering high noise immunity and CMOS low power dissipation. ESD protection exceeds 2000 V (HBM) and 1000 V (CDM).

Counter Dividers Feature Summary

• Synchronous counting and loading with positive-edge triggered clock
• Asynchronous master reset function
• Internal look-ahead carry simplifies serial cascading
• High noise immunity and robust ESD protection

Counter Dividers Applications

• Digital frequency division circuits
• Event counting applications
• Timing sequence generation systems
• General-purpose digital logic counters

Counter Dividers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity matches SOT338-1 specifications. Ensure storage conditions prevent moisture damage prior to soldering. Validate RoHS compliance documentation against current regulatory requirements. Cross-reference ordering suffixes to confirm exact pinout and electrical characteristics.

Counter Dividers Selection Notes

Select this component for designs requiring synchronous 4-bit binary counting with asynchronous clear functionality. Consider the wide supply voltage range and CMOS compatibility for mixed-signal environments. Evaluate thermal performance within the specified operating temperature limits. Ensure interface levels match system requirements for reliable signal transmission.

Counter Dividers Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices manufactured by Nexperia. It implements standard IEEE/IEC logic functions optimized for modern digital systems. The DB suffix indicates the SSOP16 plastic small outline package variant. It serves as a fundamental building block for sequential logic design in consumer and industrial electronics.

Counter Dividers Replacement Considerations

The datasheet revision history notes that type number 74HC161DB was removed from the document in version 5. Designers should verify current availability and potential package substitutions with Nexperia sales offices.