CD4015 Logic - Shift Registers 5V 16-DIP 3V~18V[Video]: Datasheet, Pinout, and Equivalents

A CMOS IC with two 4-bit shift registers is the CD4015. There are serial input and parallel output pins on each shift register. It's widely used to provide a microcontroller, such as Arduino, extra output pins. A Dual 4-bit Shift Register is the CD4015. It has a wide operating voltage range of up to 18V, making it suitable for high-voltage applications. The IC is typically used in conjunction with a microcontroller as an I/O expander to control various outputs such as LEDs and LCD displays.

• Shift register with dual 4-bit serial input and parallel output.

• 3V to 18V operating voltage

• 80uA Power Consumption

• 8.5MHz @15V Clock Input Frequency

• Clock Frequency Maximum: 12Mhz @10V

• 16-pin PDIP, GDIP, and PDSO packages are available.

CD4015 Pinout

CD4015 Circuit

A shift register is a simple memory circuit capable of storing a large number of bits. A sequence of flip-flops can be used to make one. One bit can be stored in each flip-flop. A 4-bit shift register, such as the ones found in the CD4015 chip, has four flip-flops and is commonly referred to as a 4-stage shift register:

Whatever is on the Data In pin after the first clock pulse is stored in the first flip-flop. What was previously stored on the first flip-flop is now stored on the second flip-flop. What was formerly kept on the second flip-flop is now stored on the third... And so forth.

The bit saved on the previous flip-flop will be overwritten. As a result, every clock pulse shifts the data one flip-flop (or one position) to the right. As a result, the moniker "shift register" was coined.

• To begin, connect the positive supply terminal to the VDD pin and the negative supply terminal to the GND pin. A power supply voltage of 3V to 15V can be used. Some variants of the 4015 IC, however, can handle up to 20V. For accurate values, consult your datasheet.

• Each of the chip's two shift registers has its own Clock, Reset, and Data pins. To load data into the registers, use the clock and data pins as follows: Whatever is on the D pin is transferred into the register on each rising edge of the CLK pin.

• Set the RST pin to HIGH to reset the register's four bits to 0000. Otherwise, keep it to a minimum.

• The state of the shift registers can be read from the Qxx pins at any moment.

• CD4015

• NTE4015

• MC14015

• HCF4015

• LTC4015

• TC4015

• HEF4015

• Expand the GPIO pin on an MCU/MPU

• LED Matrix/Cube Projects

• Interface LCD

• Cascading applications

• High logic level controller 

CD4015 Package information

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