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. 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. 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. 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. 663-3097
FabrikantnummerTPIC6B596DW
€ 1,28
Each (In a Pack of 5)
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. 145-0173
FabrikantnummerSN74HC393D
€ 0,391
Each (In a Tube of 50)
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. 178-9182
FabrikantnummerCD74HC4094M
€ 0,391
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. 527-378
FabrikantnummerSN74HC166D
€ 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. 146-0381
Fabrikantnummer74HCT4060D,652
FabrikantNexperia
€ 0,20
Each (In a Tube of 50)
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. 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. 145-0448
FabrikantnummerSN74AHCT594PW
€ 0,728
Each (In a Tube of 90)
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
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. 179-2149
FabrikantnummerCD74HC4024M
€ 0,54
Each (In a Tube of 50)
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. 796-7963
FabrikantnummerCD74HC166M
€ 0,441
Each (In a Pack of 10)
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. 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. 781-2778
Fabrikantnummer74HC165PW,112
FabrikantNexperia
€ 0,197
Each (In a Pack of 24)
Aantal stuks
TSSOP Shift Register 8 74HC Surface Mount - Parallel to Serial 1 16 2 V 6 V 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm
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. 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. 816-8854
Fabrikantnummer74LVC595APW,112
FabrikantNexperia
€ 0,419
Each (In a Pack of 16)
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. 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. 144-9896
FabrikantnummerSN74LS393N
€ 0,906
Each (In a Tube of 25)
Aantal stuks
PDIP Counter, Divider 4 LS Through Hole Binary Up Counter 2 14 4.75 V 5.25 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
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