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. 162-6428
Mfr. Part No.TLC3702MD
HK$10.44
Each (In a Tube of 75)
units
Low Power Surface Mount SOIC Single Push-Pull 2 2.7µs 8 5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 84dB
RS Stock No. 912-6766
Mfr. Part No.MCP6564-E/ST
BrandMicrochip
HK$10.27
Each (In a Tube of 96)
units
General Purpose Surface Mount TSSOP Single Push-Pull 4 0.02µs 14 1.8 → 5.5 V 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm 65dB
RS Stock No. 146-1118
Mfr. Part No.MAX941CPA+
HK$33.35
Each (In a Tube of 50)
units
General Purpose Through Hole PDIP Single - 1 - 8 3 V, 5 V 9.91 x 7.87 x 4.45mm 9.91mm 7.87mm 4.45mm 81.94dB
RS Stock No. 165-3327
Mfr. Part No.MCP6541UT-E/OT
BrandMicrochip
HK$2.34
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Single Push-Pull 1 - 5 1.6 → 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 70dB
RS Stock No. 756-2805
Mfr. Part No.TA75W393FU(TE12L,F
BrandToshiba
HK$3.318
Each (In a Pack of 10)
units
General Purpose Surface Mount SSOP Dual Open Collector 2 1.3µs 8 - 2.9 x 2.8 x 1.1mm 2.9mm 2.8mm 1.1mm -
RS Stock No. 122-0108
Mfr. Part No.LM2903DR2G
HK$0.659
Each (On a Reel of 2500)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.5µs 8 3 to 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 128-8846
Mfr. Part No.BA10339FV-E2
BrandROHM
HK$5.25
Each (In a Pack of 25)
units
General Purpose, Ground Sense Surface Mount SSOP-B Dual, Single Open Collector 4 1.3µs 14 3 → 36 V 5 x 4.4 x 1.15mm 5mm 4.4mm 1.15mm -
RS Stock No. 171-6321
Mfr. Part No.BA2903YFVM-CTR
BrandROHM
HK$4.43
Each (In a Pack of 10)
units
- Surface Mount MSOP Dual, Single Open Collector 2 1.3µs 8 2 → 36 V 2.9 x 2.8 x 0.75mm 2.9mm 2.8mm 0.75mm -
RS Stock No. 651-1865
Mfr. Part No.LMV7235M7/NOPB
HK$15.346
Each (In a Pack of 5)
units
General Purpose Surface Mount SC-70 Single Open Drain 1 - 5 3 V, 5 V 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm 67dB
RS Stock No. 162-9568
Mfr. Part No.NCS2202SQ2T2G
HK$3.311
Each (On a Reel of 3000)
units
Low Power Surface Mount SC-70 Single Open Drain 1 35µs 5 0.85 → 6 V 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 65dB
RS Stock No. 517-1573
Mfr. Part No.LP339D
HK$4.77
Each (In a Pack of 10)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 8µs 14 5 → 28 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS Stock No. 761-9783
Mfr. Part No.MAX9142ESA+T
HK$28.318
Each (On a Tape of 5)
units
Low Power Surface Mount SOIC Dual Push-Pull 2 - 8 - 5 x 4 x 1.5mm 5mm 4mm 4mm 80µV/V
RS Stock No. 162-6429
Mfr. Part No.TLC3704MD
HK$13.86
Each (In a Tube of 50)
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. 178-2404
Mfr. Part No.NJM311M
HK$3.813
Each (In a Tube of 100)
units
General Purpose Surface Mount DMP Dual, Single Open Collector 1 0.2µs 8 9 → 28 V 5 x 5 x 1.6mm 5mm 5mm 1.6mm -
RS Stock No. 178-5167
Mfr. Part No.LM393DT
HK$0.839
Each (On a Reel of 2500)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 4.9 x 3.9 x 1.25mm 4.9mm 3.9mm 1.25mm -
RS Stock No. 169-8412
Mfr. Part No.MAX9142ESA+
HK$26.399
Each (In a Tube of 100)
units
Low Power Surface Mount SOIC Single Push-Pull 2 - 8 2.7 → 5.5 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 80µV/V
RS Stock No. 178-4788
Mfr. Part No.LM339DG
HK$2.675
Each (In a Tube of 55)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 5 → 28 V 8.75 x 4 x 1.5mm 8.75mm 4mm 1.5mm -
RS Stock No. 168-1934
Mfr. Part No.BA2903SFV-E2
BrandROHM
HK$5.06
Each (In a Pack of 50)
units
- Surface Mount SSOP Dual, Single Open Collector 2 1.3µs 8 36 V 3 x 4.4 x 1.5mm 3mm 4.4mm 1.5mm -
RS Stock No. 787-8608
Mfr. Part No.LM239DTBR2G
HK$3.05
Each (On a Tape of 20)
units
General Purpose Surface Mount TSSOP Dual, Single CMOS, TTL 4 1.3µs 14 3 → 36 V 5.1 x 4.5 x 1.05mm 5.1mm 4.5mm 1.05mm -
RS Stock No. 661-2680
Mfr. Part No.TLC3704IDR
HK$14.03
Each (In a Pack of 5)
units
Low Power Surface Mount SOIC Single Push-Pull 4 2.7µs 14 5 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm 84dB
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