CD4021BCM

Series:	4000B
Packaging:	Tube
Part Status:	Obsolete
Logic Type:	Shift Register
Output Type:	Push-Pull
Number of Elements:	1
Number of Bits per Element:	8
Function:	Parallel or Serial to Serial
Voltage - Supply:	3 V ~ 18 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	4021

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<h2>Introduction</h2>The CD4021BCM is a type of integrated circuit shift register developed by Texas Instruments. It is a CMOS (Complementary Metal-Oxide Semiconductor) device and is used in a wide variety of applications. The CD4021BCM is a versatile logic device featuring nine parallel output stages and a single-phase clock. This device is commonly used as a delay line, a shift register, or a "Divide-by-N Counter". The CD4021BCM is a great choice for any application requiring a low-cost, high-performance solution.<h2>Application Field</h2>The CD4021BCM is found in many industrial, consumer, and automotive applications. The CD4021BCM can be used in a variety of digital circuits including data storage systems, serial transmission, communications, and logic timing. It is also often used for memory expansion, counter circuits, and data multiplexing.The CD4021BCM is also used in a variety of applications requiring a serial to parallel data conversion. This can be used in robotics, control systems, and embedded systems. Additionally, the CD4021BCM is a great choice for designs requiring low power consumption, space savings, and high speed performance.<h2>Working Principle</h2>The CD4021BCM is a 9-stage parallel-in serial-out shift register. This type of shift register functions by “shifting” or transferring binary numbers bit-by-bit from an input line to an output line. Each bit is shifted in a predetermined order determined by the clock signal. The output signals will change in the same order as the input signals, however the output signals will always be one step ahead of the input signals.When the clock signal is applied, the data stored in the first stage is shifted to the second stage and the data in the second stage is shifted to the third stage and so on. This process continues for all nine stages. The data in the last stage is then shifted out through the output line.<h2>Conclusion</h2>The CD4021BCM is a versatile logic device suitable for many applications. Its nine parallel output stages and single-phase clock make it an ideal choice for low-cost, high performance solutions. It is commonly used in delay lines, shift registers, data transmission systems, and serial-to-parallel conversions. The CD4021BCM is a great choice for any application requiring robust and reliable performance.

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