CD74HC190EG4

Counter Dividers Overview

The CD74HC190EG4 is a synchronous up/down decade counter manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports bidirectional counting sequences. The device features asynchronous parallel data loading, an asynchronous reset, and a ripple clock output for cascading applications. It is housed in a 16-pin PDIP package and is rated for operation across an extended temperature range from -55 °C to +125 °C.

Counter Dividers Feature Summary

• Synchronous up/down decade counting capability with dedicated direction control input
• Asynchronous parallel load function allowing immediate data entry into the counter outputs
• Ripple clock output pin provided to facilitate multi-stage cascading without external logic

Counter Dividers Applications

• Digital frequency division circuits requiring decade scaling
• Time-base generation modules for digital clocks and timers
• Control logic sequencing in industrial automation systems

Counter Dividers Procurement Notes

Verify the specific suffix 'G4' indicates lead-free packaging compliance when sourcing. Confirm that the PDIP-16 package dimensions match your PCB footprint requirements. Ensure the operating environment remains within the specified -55 °C to +125 °C thermal limits to maintain signal integrity and device longevity.

Counter Dividers Selection Notes

Select this component when a synchronous decade counter is required instead of a binary counter. The HC logic family offers broader voltage flexibility compared to HCT variants. Verify that the asynchronous load feature aligns with your system's timing constraints relative to the clock edge.

Counter Dividers Part Context

This part belongs to the Texas Instruments CD74HC190/191 series of high-speed CMOS logic devices. The CD74HC190 specifically denotes the decade (BCD) variant, whereas the CD74HC191 is its binary counterpart. Both share identical pinouts and functional characteristics except for their counting modulus.

Counter Dividers Replacement Considerations

• CD74HC190E
• CD74HC190N