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. 663-2098
FabrikantnummerSN74HC393D
€ 0,39
Each (In a Pack of 10)
Aantal stuks
SOIC Counter, Divider 4 HC Surface Mount Binary Up Counter 2 14 2 V 6 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm
RS-stocknr. 662-9556
FabrikantnummerCD40192BE
€ 0,48
Each (In a Pack of 5)
Aantal stuks
PDIP Counter 4 4000 Through Hole 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. 169-7294
Fabrikantnummer74LVC595APW,112
FabrikantNexperia
€ 0,235
Each (On a Reel of 2400)
Aantal stuks
TSSOP Shift Register 8 74LVC Surface Mount - Serial to Serial/Parallel 1 16 1.65 V 3.6 V 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm
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. 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. 145-0417
FabrikantnummerCD4024BM
€ 0,35
Each (In a Tube of 50)
Aantal stuks
SOIC Counter, Divider 7 4000 Surface Mount Binary Up Counter 1 14 3 V 18 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm
RS-stocknr. 145-2818
FabrikantnummerMC74HC595ADG
FabrikantON Semiconductor
€ 0,323
Each (In a Tube of 48)
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. 162-7301
FabrikantnummerSN65HVS880PWP
€ 4,122
Each (In a Tube of 50)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 121-8422
FabrikantnummerTPIC6595DW
€ 2,695
Each (In a Tube of 25)
Aantal stuks
SOIC Shift Register 8 - Surface Mount - Serial to Serial/Parallel 1 20 4.5 V 5.5 V 12.8 x 7.52 x 2.35mm 12.8mm 7.52mm
RS-stocknr. 781-2894
Fabrikantnummer74HCT4060D,652
FabrikantNexperia
€ 0,306
Each (In a Pack of 25)
Aantal stuks
SOIC Counter 14 74HCT Surface Mount Binary Up Counter 1 16 4.5 V 5.5 V 10 x 4 x 1.45mm 10mm 4mm
RS-stocknr. 922-2896
FabrikantnummerCD4017BM
€ 0,388
Each (In a Tube of 40)
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. 162-5278
FabrikantnummerSN74HC165QPWRG4Q1
€ 0,178
Each (On a Reel of 2000)
Aantal stuks
TSSOP Shift Register 8 HC Surface Mount - Serial to Serial/Parallel 1 16 2 V 6 V 5 x 4.4 x 1.15mm 5mm 4.4mm
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. 663-0345
FabrikantnummerCD74HC4094M
€ 0,402
Each (In a Pack of 10)
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. 662-6838
FabrikantnummerCD4015BPWR
€ 0,414
Each (In a Pack of 5)
Aantal stuks
TSSOP Shift Register 4 4000 Surface Mount - Serial to Parallel 2 16 3 V 18 V 5 x 4.4 x 1.15mm 5mm 4.4mm
RS-stocknr. 121-9245
FabrikantnummerCD4029BEE4
€ 0,232
Each (In a Tube of 25)
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. 483-6695
Fabrikantnummer74HCT165D,652
FabrikantNexperia
€ 0,534
Each (In a Pack of 10)
Aantal stuks
SOIC Shift Register 8 HCT Surface Mount - Serial to Serial/Parallel 1 16 4.5 V 5.5 V 10 x 4 x 1.45mm 10mm 4mm
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. 663-0323
FabrikantnummerCD74HC4024M
€ 0,544
Each (In a Pack of 5)
Aantal stuks
SOIC Counter 7 HC Surface Mount Binary Up Counter 1 14 2 V 6 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm
RS-stocknr. 689-8724
FabrikantnummerMC74HC595ADG
FabrikantON Semiconductor
€ 0,44
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
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