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. 100-0763
FabrikantnummerSN74HC595N
0,388 €
Each (In a Tube of 25)
Aantal stuks
PDIP Shift Register 8 HC Through Hole - Serial to Parallel 1 16 2 V 6 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 145-0661
FabrikantnummerCD40110BE
1,175 €
Each (In a Tube of 25)
Aantal stuks
PDIP Counter 5 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. 145-0429
FabrikantnummerCD74HC192E
0,52 €
Each (In a Tube of 25)
Aantal stuks
PDIP Counter 4 HC Through Hole Decade Down Counter, Up Counter 1 16 2 V 6 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 662-9528
FabrikantnummerCD40110BE
1,372 €
Each (In a Pack of 5)
Aantal stuks
PDIP Counter 5 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. 663-0130
FabrikantnummerCD74HC192E
0,646 €
Each (In a Pack of 5)
Aantal stuks
PDIP Counter 4 HC Through Hole Decade Down Counter, Up Counter 1 16 2 V 6 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 921-5166
FabrikantnummerCD4017BEE4
0,388 €
Each (In a Tube of 25)
Aantal stuks
PDIP Counter, Divider 5 CMOS Through Hole Decade Up Counter 1 16 3 V 18 V 19.69 x 6.6 x 4.57mm 19.69mm 6.6mm
RS-stocknr. 527-445
FabrikantnummerCD4040BE
0,388 €
Each (In a Tube of 25)
Aantal stuks
PDIP Counter, Divider 12 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. 526-353
FabrikantnummerSN74HC4060D
0,522 €
Each (In a Pack of 20)
Aantal stuks
SOIC Counter 14 HC Surface Mount Binary Up Counter 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 145-7158
FabrikantnummerSN74HC165NE4
0,356 €
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. 178-9109
FabrikantnummerSN74HC4060D
0,475 €
Each (In a Tube of 40)
Aantal stuks
SOIC Counter 14 HC Surface Mount Binary Up Counter 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 732-0691
FabrikantnummerCD4017BEE4
0,464 €
Each (In a Pack of 5)
Aantal stuks
PDIP Counter, Divider 5 CMOS Through Hole Decade Up Counter 1 16 3 V 18 V 19.69 x 6.6 x 4.57mm 19.69mm 6.6mm
RS-stocknr. 663-1981
FabrikantnummerSN74HC165NE4
0,484 €
Each (In a Pack of 5)
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. 162-7393
FabrikantnummerSN74HC4060DR
0,183 €
Each (On a Reel of 2500)
Aantal stuks
SOIC Counter 14 HC Surface Mount Binary Up Counter 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 662-8213
FabrikantnummerSN74HC4060DR
0,454 €
Each (In a Pack of 10)
Aantal stuks
SOIC Counter 14 HC Surface Mount Binary Up Counter 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 145-7567
FabrikantnummerSN74AHC594PWR
0,162 €
Each (On a Reel of 2000)
Aantal stuks
TSSOP Shift Register 8 AHC Surface Mount - Serial to Serial/Parallel 1 16 2 V 5.5 V 5 x 4.4 x 1.15mm 5mm 4.4mm
RS-stocknr. 833-462
FabrikantnummerCD74ACT161M
1,11 €
Each
Aantal stuks
SOIC Counter 4 ACT Surface Mount Binary Up Counter 1 16 4.5 V 5.5 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 145-0191
FabrikantnummerCD4015BEE4
0,217 €
Each (In a Tube of 25)
Aantal stuks
PDIP Shift Register 4 4000 Through Hole - Serial to Parallel 2 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 162-7392
FabrikantnummerSN74HC4020DR
0,177 €
Each (On a Reel of 2500)
Aantal stuks
SOIC Counter 14 HC Surface Mount Binary Up Counter 1 16 2 V 6 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS-stocknr. 307-626
FabrikantnummerSN74LS93N
2,21 €
Each
Aantal stuks
PDIP Counter, Divider 4 LS Through Hole Binary Up Counter 1 14 4.75 V 5.25 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS-stocknr. 709-2003
FabrikantnummerCD4015BEE4
0,519 €
Each (In a Pack of 10)
Aantal stuks
PDIP Shift Register 4 4000 Through Hole - Serial to Parallel 2 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm