Comparators

What is a Comparator?A Comparator is a circuit which accepts two voltages or currents and then switches the output showing which is bigger. Comparators are found in components like analogue to digital converters. Comparators are like operational amplifiers except a comparator is designed to operate with positive feedback and output saturated at one power rail or the other.How a Comparator works.A comparator samples two input pins and turns on the output when identifying a difference or similarity.An example is when you have a minus voltage on the inverting Pin and a plus non-inverting. When the voltage, on the non-inverting equals the inverting voltage the Pin turns on. Normally the output Pin is open and switches to ground when the comparator is activated.Why use a Comparator?The primary use of a comparator is converting analog to digital (ADC). Two supply voltage are applied and the difference determines a high or low digital signal.Types of Comparator.Current sense, Differential / Dual differential, Dual / Dual CMOS, Dual voltage / General voltage, General purpose, Ground sense, High speed / high-speed CMOS, Low current CMOS, Low power / low voltage / low-power CMOS, Micro power, Nano power, Precision, Push/pull output, Quad differential, Rail to rail, Voltage, Window.Mounting Types.Surface mountThrough holeComparator power supply types.DualSingleVarious package types, pins, sizes, channels per chip, PSRR (power supply rejection ratio), CMRR (common mode rejection ratio) are all available.

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Description Price Comparator Type Mounting Type Package Type Power Supply Type Output Type Number of Channels per Chip Typical Response Time Pin Count Typical Single Supply Voltage Dimensions Length Width Height Typical CMRR
RS Stock No. 190-4382
Mfr. Part No.MAX989ESA+
HK$15.389
Each (In a Tube of 100)
units
Micro Power Comparator Surface Mount SO Dual, Single Push-Pull 1 - 8 2.5 5.5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 80dB
RS Stock No. 822-5945
Mfr. Part No.LT6700IS6-3#TRMPBF
HK$35.75
Each (In a Pack of 2)
units
Low Voltage Surface Mount TSOT-23 Single Open Collector 2 2.2µs 6 1.4 → 18 V 2.9 x 1.5 x 0.9mm 2.9mm 1.5mm 0.9mm -
RS Stock No. 144-5793
Mfr. Part No.MCP6566UT-E/OT
BrandMicrochip
HK$3.406
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Single Open Drain 1 - 5 3 V, 5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 66dB
RS Stock No. 168-8801
Mfr. Part No.TS881ILT
HK$4.41
Each (On a Reel of 3000)
units
Low Power Surface Mount SOT-23 Single Push-Pull 1 160ns 5 0.85 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 78dB
RS Stock No. 661-2886
Mfr. Part No.TLC3704IN
HK$14.29
Each (In a Pack of 5)
units
Low Power Through Hole PDIP Single Push-Pull 4 2.7µs 14 5 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm 84dB
RS Stock No. 184-8654
Mfr. Part No.BU7232YFVM-CTR
BrandROHM
HK$6.988
Each (In a Pack of 10)
units
Low Current CMOS Surface Mount MSOP Dual, Single Push-Pull 2 - 8 1.8 → 5.5 V 2.9 x 2.8 x 0.75mm 2.9mm 2.8mm 0.75mm 80dB
RS Stock No. 159-7752
Mfr. Part No.ADCMP606BKSZ-R2
HK$40.232
Each (On a Reel of 250)
units
High Speed Surface Mount SC-70 Single CML 1 0.0021µs 6 2.5 → 5.5 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 50dB
RS Stock No. 165-3421
Mfr. Part No.MCP6561UT-E/OT
BrandMicrochip
HK$3.38
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Single Push-Pull 1 - 5 3 V, 5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 66dB
RS Stock No. 121-8827
Mfr. Part No.LMV331M5/NOPB
HK$3.44
Each (On a Reel of 1000)
units
General Purpose Surface Mount SOT-23 Single Open Collector 1 - 5 3 V 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm -
RS Stock No. 189-7355
Mfr. Part No.MAX951ESA+
HK$30.137
Each (In a Tube of 100)
units
Low Power Surface Mount SOIC - Rail to Rail, Swing - 22µs 8 - 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 163-2404
Mfr. Part No.LM2903DG
HK$2.63
Each (In a Tube of 98)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 189-8843
Mfr. Part No.MAX9201EUE+
HK$36.62
Each (In a Pack of 5)
units
High Speed, Low Power Surface Mount TSSOP Single Push-Pull 1 7ns 16 4.75 → 10.5 V 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 50µV/V
RS Stock No. 171-6291
Mfr. Part No.LM2903FVJ-E2
BrandROHM
HK$4.832
Each (In a Pack of 25)
units
- Surface Mount TSSOP-BJ Dual, Single Open Collector 2 1µs 8 3 → 32 V 3 x 3 x 0.85mm 3mm 3mm 0.85mm -
RS Stock No. 189-1969
Mfr. Part No.LM393QT
HK$2.53
Each (In a Pack of 25)
units
Low Power Surface Mount DFN Dual, Single CMOS, DTL, ECL, MOS, TTL 2 1.3µs 8 2 → 36 V 2.05 x 2.05 x 0.7mm 2.05mm 2.05mm 0.7mm -
RS Stock No. 732-0819
Mfr. Part No.TLC3704MD
HK$16.34
Each (In a Pack of 5)
units
Low Power Surface Mount SOIC Single Push-Pull 4 2.7µs 14 5 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm 84dB
RS Stock No. 145-6989
Mfr. Part No.LTC1540CMS8#PBF
HK$24.646
Each (In a Tube of 50)
units
Low Power Surface Mount MSOP Dual, Single CMOS, TTL 1 - 8 2 11 V 3 x 3 x 0.86mm 3mm 3mm 0.86mm 0.1mV/V
RS Stock No. 919-9890
Mfr. Part No.LT6700CS6-1#TRMPBF
HK$17.277
Each (On a Reel of 500)
units
General Purpose Surface Mount TSOT-23 Single Open Collector 2 24µs 6 1.4 18 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm -
RS Stock No. 189-7342
Mfr. Part No.MAX9201EUE+
HK$31.66
Each (In a Tube of 96)
units
High Speed, Low Power Surface Mount TSSOP Single Push-Pull 1 7ns 16 4.75 → 10.5 V 5.1 x 4.5 x 0.95mm 5.1mm 4.5mm 0.95mm 50µV/V
RS Stock No. 651-1714
Mfr. Part No.LMV7271MF/NOPB
HK$11.89
Each (In a Pack of 5)
units
Low Power Surface Mount SOT-23 Single Push-Pull 1 - 5 3 V, 5 V 2.92 x 1.6 x 1.02mm 2.92mm 1.6mm 1.02mm 78dB
RS Stock No. 168-4870
Mfr. Part No.LM2901PWR
HK$0.89
Each (On a Reel of 2000)
units
Differential Surface Mount TSSOP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
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