CD74HC40103E

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The CD74HC40103E is a CMOS high-speed digital counter, divider, and sequencer with 10-bit spans. It is part of the 74HC family, which is noted for high-level performance including low quiescent current and advanced features such as low-voltage offset driving, high-speed output, and improved circuit reliability due to use of CMOS technology. This counter/divider is ideal for use in logic circuits as it can rapidly count up to 2^10 (1024).

The application field of the CD74HC40103E is broad. It can be used to create high-speed frequency division circuits, time division multiplexing--which is used in pulse-width modulation (PWM), pulse duration modulation (PDM) and data communication protocols, nonrecursive filters, multi-step waveforms and logic-state storage. It is also used in waveform and frequency dividers as well as in switching waveform generators. The device is capable of performing with either positive or negative logic polarity, making it a highly versatile tool.

The working principle of the CD74HC40103E is simple. At power up the internal register is reset, setting the output to the initial state (all 0’s). When a clock input is applied, it increments the output and shifts it to the left by 1 bit. This process continues until it reaches the maximum count, where all 10 bits are 1, after which it returns to the initial all 0’s state and starts again.

The output of the counter is a 10-bit binary register that reflects the current count state when a clock pulse is given to the clock input. There are three functions that can be programmed with the counter: Reset the counter on the fourth stage count (CTC), reset the counter on 10th stage count (CTR, column T), and hold the output until the 4th stage count (CF).

The reset input (RST) of the CD74HC40103E is used to reset the counter to zero. This counter also has clock enable input (CE), which is an active low signal used to clock the counter and store the current count in the output register. A low on the clock enable (CE) will stop the counter from counting but will not reset the output register. This can be used as a pause button when counting is no longer required.

Finally, the CD74HC40103E has an asynchronousLoad (SL) input. This active low input allows the counter to be loaded or reset with a binary count. The SL input is used to reset the counter to any desired count at the start or any time during the counting cycle.

In summary, the CD74HC40103E is a high-speed CMOS 10-bit counter, divider and sequencer. It can be used in a variety of logic circuits to perform operations like counting, division, and data communication protocols. It has active low reset (RST) and clock enable (CE) inputs, as well as an asynchronous load (SL) input. These three inputs can be used to program the counter functions and reset to any pre-defined count.

The specific data is subject to PDF, and the above content is for reference