Counter ICs

A Shift Register is a sequential logic device made up of a cascade of flip-flops, through which a sequence of bits are ’shifted’. These devices are commonly used to convert between serial and parallel interfaces.

How it works – basic example

In a Shift Register the output of each flip-flop is connected to the input of the next flip-flop in the cascade. With each cycle of the connected clock, the bits are ’shifted’ down the cascade by one flip-flop.

A simple analogy to understand the basic theory or operation would be to consider a glass tube with an opening both ends, and placing a ball marked ’0’ or ’1’ into one end of the tube at a regular intervals.

As each ball is placed into the tube, all the balls are ’shifted’ along by one position. The sequence in which the balls marked ’0’ and ’1’ where fed in is preserved. Also each time one ball is fed in, the ball that has been in the cascade the longest drops out. So if the tube can contain 4 balls at any one time, this could be described as a 4-bit Shift Register.

Common Types of Shift Register

• Serial-in serial-out (SISO) – In this type of Shift Register, the data input and output is serial. With each clock cycle a new bit is fed into the cascade, with the bit furthest along the cascade exiting as an output. So in a 4-bit register, the output trails the input by 4 clock cycles. This matches the simple example above, with the ball that exits the tube being the output.

• Serial-in parallel-out (SIPO) – In this configuration data is converted from serial into parallel format. As described for the SISO variant above, data is fed in serially and shifted down the cascade, the difference is that each flip-flop has an output, allowing the entire bit array to be output simultaneously as a parallel output. This may be done using a latched of buffered output.

• Parallel-in serial-out (PISO) – This variant takes a parallel input and converts into a serial output. To do this the shift register must implement a write/shift sequence. The parallel data input is (written) into each flip-flop of the array simultaneously in one clock cycle, then for the next cycles the register goes into shift mode as the bits are shifted down the flip-flop cascade, being output as serial data. The process then repeats.

• Parallel-in parallel-out (PIPO) – This type of register differs slightly from the others in that inputs and outputs of each flip-flop in the array are not interconnected. Each flip-flop takes one bit of the parallel input, stores it for a cycle, and then outputs the data simultaneously with the other flip-flops in the register, creating a parallel output that matches the input. Like the SISO type above, PIPO variants can be used to temporarily store data, or act a time delay device.

• Universal Shift Register – A configurable Shift Register that can be programmed to act as a SISO, SIPO, PISO or PIPO device, often on the fly.

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Omschrijving Prijs Package Type Logic Function Number of Stages Logic Family Mounting Type Counter Type Operation Mode Number of Elements Pin Count Minimum Operating Supply Voltage Maximum Operating Supply Voltage Dimensions Length Width
RS-stocknr. 144-9932
FabrikantnummerCD4022BEE4
€ 0,214
Each (In a Tube of 25)
Aantal stuks
PDIP Counter, Divider 4 4000 Through Hole Octal Up Counter 1 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 709-2558
FabrikantnummerSN74LS165ANE4
€ 0,78
Each (In a Pack of 5)
Aantal stuks
PDIP Shift Register 8 LS Through Hole - Serial to Serial/Parallel 1 16 4.75 V 5.25 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 923-2304
FabrikantnummerSN74LS92N
€ 2,253
Each (In a Tube of 25)
Aantal stuks
PDIP Counter, Divider 4 LS Through Hole Decade Up Counter 1 14 4.75 V 5.25 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 709-2031
FabrikantnummerCD4029BEE4
€ 0,459
Each (In a Pack of 10)
Aantal stuks
PDIP Counter 4 4000 Through Hole Binary, Decade Down Counter, Up Counter 1 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 145-0070
FabrikantnummerSN74HC165D
€ 0,385
Each (In a Tube of 40)
Aantal stuks
SOIC Shift Register 8 HC Surface Mount - Serial to Serial/Parallel 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 178-5186
FabrikantnummerSTPIC6C595TTR
€ 0,561
Each (On a Reel of 2500)
Aantal stuks
TSSOP Shift Register 8 - Surface Mount - Serial to Serial/Parallel 1 16 4.5 V 5.5 V 5 x 4.4 x 1mm 5mm 4.4mm
RS-stocknr. 662-9604
FabrikantnummerCD4033BE
€ 1,186
Each (In a Pack of 5)
Aantal stuks
PDIP Counter, Divider 5 4000 Through Hole Decade Up Counter 1 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 663-3081
FabrikantnummerTPIC6A595DW
€ 3,18
Each
Aantal stuks
SOIC Shift Register 8 - Surface Mount - Serial to Serial/Parallel 1 24 4.5 V 5.5 V 15.4 x 7.52 x 2.35mm 15.4mm 7.52mm
RS-stocknr. 663-2622
FabrikantnummerSN74LS90N
€ 2,124
Each (In a Pack of 5)
Aantal stuks
PDIP Counter, Divider 4 LS Through Hole Decade Up Counter 1 14 4.75 V 5.25 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 526-640
FabrikantnummerSN74HC165DR
€ 0,324
Each (In a Pack of 25)
Aantal stuks
SOIC Shift Register 8 HC Surface Mount - Serial to Serial/Parallel 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 526-707
FabrikantnummerCD4510BE
€ 0,41
Each (In a Tube of 25)
Aantal stuks
PDIP Counter 4 4000 Through Hole BCD Down Counter, Up Counter 1 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 910-1420
FabrikantnummerMIC5891YWM
FabrikantMicrochip
€ 2,444
Each (In a Pack of 5)
Aantal stuks
SOIC W Driver, Shift Register 8 MIC Surface Mount - Serial to Serial/Parallel 1 16 5 V 12 V 10.39 x 7.65 x 2.39mm 10.39mm 7.65mm
RS-stocknr. 910-1528
FabrikantnummerMIC5821YN
FabrikantMicrochip
€ 2,376
Each (In a Pack of 5)
Aantal stuks
PDIP Driver, Shift Register 8 MIC Through Hole - Serial to Serial/Parallel 1 16 - - 19.81 x 6.35 x 3.3mm 19.81mm 6.35mm
RS-stocknr. 527-388
FabrikantnummerSN74HC165D
€ 0,419
Each (In a Pack of 20)
Aantal stuks
SOIC Shift Register 8 HC Surface Mount - Serial to Serial/Parallel 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 689-8727
FabrikantnummerMC74HC595ADR2G
FabrikantON Semiconductor
€ 0,438
Each (In a Pack of 5)
Aantal stuks
SOIC Shift Register 8 HC Surface Mount - Serial to Serial/Parallel 1 16 2 V 6 V 10 x 4 x 1.5mm 10mm 4mm
RS-stocknr. 662-9543
FabrikantnummerCD4017BM
€ 0,427
Each (In a Pack of 10)
Aantal stuks
SOIC Counter, Divider 5 4000 Surface Mount Decade Up Counter 1 16 3 V 18 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 162-4293
FabrikantnummerSN74LS164N
€ 0,582
Each (In a Tube of 25)
Aantal stuks
PDIP Shift Register 8 LS Through Hole - Serial to Parallel 1 14 4.75 V 5.25 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 816-4657
Fabrikantnummer74HCT165PW,112
FabrikantNexperia
€ 0,118
Each (In a Pack of 32)
Aantal stuks
TSSOP Shift Register 8 74HCT Surface Mount - Serial/Parallel to Serial 1 16 4.5 V 5.5 V 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm
RS-stocknr. 806-3144
FabrikantnummerMC14020BDG
FabrikantON Semiconductor
€ 0,442
Each (In a Pack of 25)
Aantal stuks
SOIC Counter 14 CMOS Surface Mount Binary Up Counter 1 16 -0.5 V 18 V 10 x 4 x 1.5mm 10mm 4mm
RS-stocknr. 170-8015
Fabrikantnummer74HCT165D,653
FabrikantNexperia
€ 0,176
Each (On a Reel of 2500)
Aantal stuks
SO Shift Register 8 74HCT Surface Mount - Serial/Parallel to Serial 1 16 4.5 V 5.5 V 10 x 4 x 1.45mm 10mm 4mm
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