SN74HC4040DBR

Overview

The SN74HC4040DBR is a 12-bit asynchronous binary counter from the Texas Instruments HC logic family, housed in a 16-pin SSOP package. It operates on a supply voltage of 2 V to 6 V and supports a maximum clock frequency of 33 MHz at 6 V. The device features an asynchronous clear input that resets all outputs low and advances the count on high-to-low clock transitions. Key electrical characteristics include a typical propagation delay of 12 ns, a maximum supply current of 80 µA, and output drive capabilities of ±4 mA at 5 V.

Feature Summary

• Provides 12 external binary output stages for comprehensive counting applications
• Features asynchronous clearing functionality to reset all outputs to a low state
• Operates with low power consumption suitable for battery-powered designs
• Compatible with standard LSTTL loads for broad interface flexibility

Applications

• Time-delay circuits requiring precise interval generation
• Counter controls for digital sequencing operations
• Frequency-dividing circuits for signal processing

Procurement Notes

Verify the specific ordering suffix 'DBR' corresponds to the SSOP-16 package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level ratings prior to assembly planning. Ensure the procurement channel provides valid traceability documentation consistent with Texas Instruments production data standards.

Selection Notes

Select this component for designs requiring a compact surface-mount solution for 12-bit asynchronous counting. The HC series offers wide voltage compatibility and low static power dissipation. Consider the SSOP footprint constraints and thermal resistance characteristics relative to the specific PCB layout requirements.

Part Context

This part belongs to the SNx4HC4040 family of 12-bit asynchronous binary counters manufactured by Texas Instruments. The family includes various package options such as SOIC, PDIP, and TSSOP, sharing identical logical functionality. The SN74HC4040 represents the commercial grade version within this product line.

Replacement Considerations

Direct substitutes include SN74HC4040DR (SOIC package) and SN74HC4040PWR (TSSOP package). Verify pinout compatibility and package dimensions before substituting.