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 exampleIn 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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Description Price 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 Stock No. 166-1285
Mfr. Part No.HEF4520BT,652
BrandNexperia
$0.36
Each (In a Tube of 50)
units
SOIC Counter 4 4000 Surface Mount Binary Up Counter 2 16 3 V 15 V 10 x 4 x 1.45mm 10mm 4mm
RS Stock No. 144-9957
Mfr. Part No.CD74HCT4024M
$0.47
Each (In a Tube of 50)
units
SOIC Counter 7 HCT Surface Mount Binary Up Counter 1 14 4.5 V 5.5 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm
RS Stock No. 162-7379
Mfr. Part No.SN74HC161PW
$0.32
Each (In a Tube of 90)
units
TSSOP Counter 4 HC Surface Mount Binary Up Counter 1 16 2 V 6 V 5 x 4.4 x 1.15mm 5mm 4.4mm
RS Stock No. 663-0521
Mfr. Part No.CD74HCT166M
$0.464
Each (In a Pack of 10)
units
SOIC Shift Register 8 HCT Surface Mount - Serial to Serial/Parallel 1 16 4.5 V 5.5 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS Stock No. 186-9674
Mfr. Part No.MC74HCT595ADTR2G
$0.63
Each (In a Pack of 25)
units
TSSOP Shift Register 8 HCT Surface Mount - Serial to Parallel - 16 4.5 V dc 5.5 V dc 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm
RS Stock No. 121-8427
Mfr. Part No.SN74HC595DR
$0.268
Each (On a Reel of 2500)
units
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 Stock No. 809-5936
Mfr. Part No.SN74LV8153PW
$3.296
Each (In a Pack of 5)
units
TSSOP - 8 74LV Surface Mount - Serial to Parallel 1 20 3 V 13.2 V 6.6 x 4.5 x 1.05mm 6.6mm 6.6mm
RS Stock No. 162-6953
Mfr. Part No.CD74HC4060M96
$0.274
Each (On a Reel of 2500)
units
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 Stock No. 145-6407
Mfr. Part No.SN74LV8154PW
$0.986
Each (In a Tube of 70)
units
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
RS Stock No. 663-1344
Mfr. Part No.SN74AHCT595D
$0.483
Each (In a Pack of 10)
units
SOIC Shift Register 8 AHCT Surface Mount - Serial to Serial/Parallel 1 16 4.5 V 5.5 V 9.9 x 3.91 x 1.58mm 9.9mm 3.91mm
RS Stock No. 145-0027
Mfr. Part No.CD74HC597EE4
$1.10
Each (In a Tube of 25)
units
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 Stock No. 662-9786
Mfr. Part No.CD74AC164E
$1.828
Each (In a Pack of 5)
units
PDIP Shift Register 8 AC Through Hole - Serial to Parallel 1 14 1.5 V 5.5 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS Stock No. 178-5186
Mfr. Part No.STPIC6C595TTR
$0.573
Each (On a Reel of 2500)
units
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 Stock No. 806-2176
Mfr. Part No.MC74AC163DR2G
$0.51
Each (On a Tape of 25)
units
SOIC Counter 4 AC Surface Mount Binary Up Counter 1 16 2 V 6 V 10 x 4 x 1.5mm 10mm 4mm
RS Stock No. 541-9241
Mfr. Part No.TC74HC4060AF(F)
BrandToshiba
$1.636
Each (In a Pack of 5)
units
SOP Counter 14 HC Surface Mount Binary Up Counter 1 16 2 V 6 V 10.8 x 5.3 x 1.5mm 10.8mm 5.3mm
RS Stock No. 540-0231
Mfr. Part No.TC74HC4040AP(F)
BrandToshiba
$2.89
Each (In a Pack of 5)
units
PDIP Counter 12 HC Through Hole Binary Up Counter 1 16 2 V 6 V 19.25 x 6.4 x 3.5mm 19.25mm 6.4mm
RS Stock No. 186-9842
Mfr. Part No.MC14526BDWG
$1.38
Each (In a Pack of 10)
units
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 Stock No. 145-0422
Mfr. Part No.CD74AC164E
$0.98
Each (In a Tube of 25)
units
PDIP Shift Register 8 AC Through Hole - Serial to Parallel 1 14 1.5 V 5.5 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS Stock No. 162-7240
Mfr. Part No.CD4031BE
$1.44
Each (In a Tube of 25)
units
PDIP Shift Register 64 4000 Through Hole - Serial to Serial 1 16 3 V 18 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm
RS Stock No. 662-9590
Mfr. Part No.CD4026BE
$0.637
Each (In a Pack of 10)
units
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
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