N74F191D,602

Counter Dividers Overview

The N74F191D,602 is a 4-bit binary up/down counter manufactured by NXP USA Inc. It features synchronous reversible counting with asynchronous parallel load capability and operates within a supply voltage range of 4.5V to 5.5V. The device utilizes edge-triggered master/slave flip-flops for count-up and count-down operations controlled by a single input. It provides terminal count and ripple clock outputs for cascading without external logic. The component is housed in a 16-SOIC surface-mount package and supports a typical maximum clock frequency of 125MHz.

Counter Dividers Feature Summary

• Synchronous reversible counting with asynchronous parallel load
• Cascadable design without external logic
• Terminal count and ripple clock output generation

Counter Dividers Applications

• Multi-stage counter designs using ripple clock synchronization
• Synchronous multi-stage counters with common clock inputs
• Systems requiring presettable binary counting states

Counter Dividers Procurement Notes

Verify the specific suffix '602' against official manufacturer documentation to confirm packaging and tape-and-reel specifications. Confirm RoHS3 compliance status and check for product change notifications or end-of-life declarations prior to procurement. Ensure the selected variant matches the required 16-SOIC package dimensions and lead finish requirements for the target assembly process.

Counter Dividers Selection Notes

Select this component when a 4-bit synchronous counter with independent up/down control is required. The asynchronous parallel load feature allows immediate state setting, overriding standard counting sequences. Verify that the operating temperature range of 0°C to +70°C meets environmental constraints. Consider the propagation delays and setup times specified in the AC electrical characteristics for high-speed timing analysis.

Counter Dividers Part Context

This part belongs to the 74F series of high-speed CMOS logic devices originally developed by Philips Semiconductors. The 74F191 specifically addresses applications needing bidirectional binary counting with flexible loading options. It serves as a foundational building block for digital timing circuits and frequency division systems where precise state management and cascading capabilities are essential.

Counter Dividers Replacement Considerations

N74F191D,623