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. 923-6706
FabrikantnummerCD4060BEE4
€ 0,388
Each (In a Tube of 25)
Aantal stuks
PDIP Counter, Divider 14 4000 Through Hole Binary Up Counter 1 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 662-6850
FabrikantnummerCD4060BPWR
€ 0,312
Each (In a Pack of 10)
Aantal stuks
TSSOP Counter, Divider 14 4000 Surface Mount Binary Up Counter 1 16 3 V 18 V 5 x 4.4 x 1.15mm 5mm 4.4mm
RS-stocknr. 865-1599
FabrikantnummerHEF4021BT,652
FabrikantNexperia
€ 0,20
Each (In a Tube of 50)
Aantal stuks
SOIC Shift Register 8 HEF Surface Mount - Parallel to Serial 1 16 3 V 15 V 10 x 4 x 1.45mm 10mm 4mm
RS-stocknr. 144-9944
FabrikantnummerCD74HC165E
€ 0,488
Each (In a Tube of 25)
Aantal stuks
PDIP Shift Register 8 HC Through Hole - Serial to Serial/Parallel 1 16 2 V 6 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 131-2759
FabrikantnummerBU2152FS-E2
FabrikantROHM
€ 2,508
Each (In a Pack of 5)
Aantal stuks
SSOP-A32 Shift Register - CMOS Surface Mount - Serial to Parallel - 32 2.7 V 5.5 V 13.6 x 5.4 x 1.8mm 13.6mm 5.4mm
RS-stocknr. 162-6923
FabrikantnummerCD4060BPWR
€ 0,129
Each (On a Reel of 2000)
Aantal stuks
TSSOP Counter, Divider 14 4000 Surface Mount Binary Up Counter 1 16 3 V 18 V 5 x 4.4 x 1.15mm 5mm 4.4mm
RS-stocknr. 124-2264
Fabrikantnummer74HC595D,112
FabrikantNexperia
€ 0,259
Each (In a Tube of 50)
Aantal stuks
SOIC Shift Register 8 HC Surface Mount - Serial to Serial/Parallel 1 16 2 V 6 V 10 x 4 x 1.45mm 10mm 4mm
RS-stocknr. 806-3286
FabrikantnummerMC14526BDWR2G
FabrikantON Semiconductor
€ 0,582
Each (On a Tape of 20)
Aantal stuks
SOIC W Counter 3 CMOS Surface Mount Binary Down Counter 1 16 -0.5 V 18 V 10.45 x 7.6 x 2.4mm 10.45mm 7.6mm
RS-stocknr. 145-6607
FabrikantnummerCD4060BM
€ 0,388
Each (In a Tube of 40)
Aantal stuks
SOIC Counter 14 CD4000 Surface Mount Binary Up Counter 1 16 3 V 15 V 10 x 4 x 1.5mm - -
RS-stocknr. 144-9931
FabrikantnummerCD4024BE
€ 0,378
Each (In a Tube of 25)
Aantal stuks
PDIP Counter, Divider 7 4000 Through Hole Binary Up Counter 1 14 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 170-7970
Fabrikantnummer74HC4094D,653
FabrikantNexperia
€ 0,137
Each (On a Reel of 2500)
Aantal stuks
SO - 8 74HC Surface Mount - Serial to Serial/Parallel 1 16 2 V 6 V 10 x 4 x 1.45mm 10mm 4mm
RS-stocknr. 663-0092
FabrikantnummerCD74HC165E
€ 0,546
Each (In a Pack of 10)
Aantal stuks
PDIP Shift Register 8 HC Through Hole - Serial to Serial/Parallel 1 16 2 V 6 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 163-0546
FabrikantnummerMC14526BDWR2G
FabrikantON Semiconductor
€ 0,317
Each (On a Reel of 1000)
Aantal stuks
SOIC W Counter 3 CMOS Surface Mount Binary Down Counter 1 16 -0.5 V 18 V 10.45 x 7.6 x 2.4mm 10.45mm 7.6mm
RS-stocknr. 663-2782
FabrikantnummerSN74LV8154PW
€ 1,046
Each (In a Pack of 5)
Aantal stuks
TSSOP Counter 8 LV Surface Mount Binary Up Counter 2 20 2 V 5.5 V 6.5 x 4.4 x 1.15mm 6.5mm 4.4mm
Nieuw
RS-stocknr. 186-9842
FabrikantnummerMC14526BDWG
FabrikantON Semiconductor
€ 0,72
Each (In a Pack of 10)
Aantal stuks
SOIC Counter 1 - Surface Mount Divide-By-N Down Counter - 16 3 V dc 18 V dc 10.45 x 7.6 x 2.4mm 10.45mm 7.6mm
RS-stocknr. 145-1222
FabrikantnummerCD40192BE
€ 0,41
Each (In a Tube of 25)
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. 145-9134
FabrikantnummerMIC5821YN
FabrikantMicrochip
€ 1,925
Each (In a Tube of 25)
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. 145-6214
FabrikantnummerCD74HC166M
€ 0,453
Each (In a Tube of 40)
Aantal stuks
SOIC Shift Register 8 74HC Surface Mount - Parallel to Serial, Serial 1 16 2 V 6 V 10 x 4 x 1.5mm 10mm 4mm
RS-stocknr. 923-3732
FabrikantnummerTPIC6595DWR
€ 1,28
Each (On a Reel of 2000)
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. 663-1341
FabrikantnummerSN74AHCT594PW
€ 0,89
Each (In a Pack of 5)
Aantal stuks
TSSOP Shift Register 8 AHCT Surface Mount - Serial to Serial/Parallel 1 16 4.5 V 5.5 V 5 x 4.4 x 1.15mm 5mm 4.4mm
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