74HC165D,652

The 74HC165D and 652 are components in the logic family of shift registers. They are designed to be compatible with multiple logic types, such as TTL, ECL and CMOS, and tend to provide more functions and higher speed than their predecessors, the 74ACT165 and 651.Shift registers are digital circuits that combine bits of data serially (one bit at a time) and shift them through a series of registers as opposed to parallel operation—the opposite of what is done with standard logic gates. When the data is shifted into the register, each new bit is placed in the last available bit location. The purpose of this type of circuit is to store and transfer a finite amount of data in a more time efficient and cost efficient manner than comparable parallel logic.

Application Field

The 74HC165D and 652 are used in multiple applications including message transmission, memory, data thinning, and other logic circuit applications. They are also used in motor control, automotive, industrial, and audio amplification and filtering applications. The 74HC165D allows for a single 6-bit-wide input and can be changed from a serial connection to a parallel connection, while the 74HC652 can change up to eight bits in parallel. Both of these shift registers are beneficial to those applications that must shift or store data quickly or in small quantities.

Working Principle

The working principle of both the 74HC165D and the 652 is quite simple. The register consists of an input/output (I/O) line and a shift register. To receive data, the I/O line must be connected to an outside source such as a microcomputer, keyboard, or other input device. The data is then shifted into the register one bit at a time. Each time the clock line is actuated, all of the bits in the register, including the new bit, are shifted left. The last data bit remains in the register, allowing for continued data transfer until the register has reached its maximum capacity.At this point, the data can be moved from the register back to the outside source. This is achieved by reading the contents of the register one bit at a time, beginning with the first bit and ending with the last bit. The data is transferred from the register serially as it was received. This process is repeated until the data is all transferred.

Conclusion

The 74HC165D and 652 are logic devices that provide a reliable and efficient solution for data transfer and storage when the need arises. By combining parallel and serial data transmission and reception, the 74HC165D and 652 are ideal for applications that require rapid shift or transmission of large quantities of data. As such, they are widely used in many areas of today’s technological world.

74HC153D,652	Nexperia USA...	0.32 $	4543	IC MULTIPLEXER DUAL 4INP ...
74HC157D,652	Nexperia USA...	0.3 $	673	IC QUAD 2-IN MUX 16-SOICM...
74HC42D,653	Nexperia USA...	0.15 $	5000	IC BCD TO DECIMAL DECODER...
74HC174D,653	Nexperia USA...	0.11 $	2500	IC FF D-TYPE SNGL 6BIT 16...
74HC174PW,112	Nexperia USA...	0.13 $	1000	IC FF D-TYPE SNGL 6BIT 16...
74HC4040D,653	Nexperia USA...	0.1 $	2500	IC 12STAGE BINARY RIPPLE ...
74HC164S14-13	Diodes Incor...	0.0 $	1000	IC 8BIT SERIAL SHIFT REG ...
74HCT194D,653	NXP USA Inc	0.0 $	1000	IC 4BIT BI UNIV SHIFT REG...
74HC259D,653	Nexperia USA...	0.08 $	5000	IC 8BIT ADDRESSABLE LATCH...
74HCT574PW,118	Nexperia USA...	0.28 $	683	IC FF D-TYPE SNGL 8BIT 20...
74HC4040D-Q100J	Nexperia USA...	0.13 $	1000	IC RIPPLE COUNTER 12STAGE...
74HCT93N,112	NXP USA Inc	0.0 $	1000	IC 4BIT BIN RIPPLE COUNT ...
74HC4059DB,118	NXP USA Inc	0.0 $	1000	IC PROG DIV-BY-N COUNTER ...
74HC125S14-13	Diodes Incor...	0.0 $	1000	IC BUFFER NON-INVERT 6V 1...
74HC366PW,112	Nexperia USA...	0.14 $	1000	IC BUFFER INVERT 6V 16TSS...
74HC241DB,112	Nexperia USA...	0.41 $	1000	IC BUFFER NON-INVERT 6V 2...
74HC125DR2G	ON Semicondu...	0.0 $	1000	IC BUFFER NON-INVERT 6V 1...
74HCT4067D,112	Nexperia USA...	1.65 $	4656	IC MUX/DEMUX 1X16 24SOIC1...
74HCT4067BQ,118	Nexperia USA...	0.88 $	1000	IC MUX/DEMUX 1X16 24DHVQF...
74HCT4016D,112	NXP USA Inc	0.0 $	1000	IC SWITCH QUAD SPST 14SOI...
74HCT280D,652	Nexperia USA...	0.61 $	2677	IC 9-BIT GEN/CHKER 14SOPa...
74HCT688PW,112	NXP USA Inc	0.0 $	1000	IC COMPARATOR MAGNITUDE 2...
74HCT9046APW,112	Nexperia USA...	0.0 $	1000	IC PLL W/BAND GAP VCO 16-...
74HC253DB,118	Nexperia USA...	0.14 $	1000	IC DUAL 4-IN MUX 3-ST 16S...
74HC245PW,112	Nexperia USA...	0.28 $	2372	IC TXRX NON-INVERT 6V 20T...
74HC164D14	Diodes Incor...	0.36 $	270	IC SHIFT REGISTER SER 14D...
74HCT86S14-13	Diodes Incor...	0.0 $	1000	IC GATE XOR 4CH 2-INP 14S...
74HC4049D,652	Nexperia USA...	0.47 $	748	IC INVERTER 6CH 6-INP 16S...
74HCT161DB,118	NXP USA Inc	0.0 $	1000	IC SYNC 4BIT BINARY COUNT...