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. 436-8417
Mfr. Part No.LM139J
£9.78
Each
Units
Differential Through Hole CDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.56 x 6.92 x 4.57mm 19.56mm 6.92mm 4.57mm -
RS Stock No. 761-8370
Mfr. Part No.LT1716IS5#TRMPBF
£2.65
Each
Units
Low Power Surface Mount TSOT-23 Dual, Single Push-Pull 1 - 5 2.7 44 V 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm 110dB
RS Stock No. 153-3393
Mfr. Part No.LT1016CN8#PBF
£3.753
Each (In a Tube of 50)
Units
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V 10.16 x 6.48 x 3.3mm 10.16mm 6.48mm 3.3mm 96dB
RS Stock No. 545-4799
Mfr. Part No.LT1016CN8#PBF
£5.34
Each
Units
General Purpose Through Hole PDIP Dual, Single Complementary 1 - 8 5 V 10.16 x 6.48 x 3.3mm 10.16mm 6.48mm 3.3mm 96dB
RS Stock No. 178-4788
Mfr. Part No.LM339DG
£0.233
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. 463-155
Mfr. Part No.LM339DG
£0.256
Each (In a Pack of 50)
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. 121-8745
Mfr. Part No.LM392N/NOPB
£0.959
Each (In a Tube of 40)
Units
Low Power Through Hole MDIP - - - - 8 - 9.27 x 6.35 x 3.3mm 9.27mm 6.35mm 3.3mm -
RS Stock No. 534-2999
Mfr. Part No.LM392N/NOPB
£2.01
Each
Units
Low Power Through Hole MDIP - - - - 8 - 9.27 x 6.35 x 3.3mm 9.27mm 6.35mm 3.3mm -
RS Stock No. 517-1882
Mfr. Part No.LM339AD
£0.275
Each (In a Pack of 20)
Units
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS Stock No. 144-9913
Mfr. Part No.LM339AD
£0.25
Each (In a Tube of 50)
Units
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS Stock No. 166-1860
Mfr. Part No.LM2903N
£0.666
Each (In a Tube of 50)
Units
General Purpose Through Hole PDIP Dual, Single Open Collector 2 0.2 μs, 1.4 μs 8 2 → 36 V 9.6 x 6.4 x 3.4mm 9.6mm 6.4mm 3.4mm -
RS Stock No. 669-6212
Mfr. Part No.MCP6541T-E/OT
BrandMicrochip
£0.279
Each (In a Pack of 10)
Units
Low Power 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 70dB
RS Stock No. 165-4624
Mfr. Part No.MCP6541T-E/OT
BrandMicrochip
£0.209
Each (On a Reel of 3000)
Units
Low Power 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 70dB
RS Stock No. 463-139
Mfr. Part No.LM393DG
£0.232
Each (In a Pack of 25)
Units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 145-3273
Mfr. Part No.LM393DG
£0.21
Each (In a Tube of 98)
Units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 162-5384
Mfr. Part No.LM339ADR
£0.074
Each (On a Reel of 2500)
Units
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS Stock No. 195-082
Mfr. Part No.AD790JRZ
£7.73
Each
Units
General Purpose Surface Mount SOIC Dual, Single TTL 1 - 8 5 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm 95dB
RS Stock No. 162-6240
Mfr. Part No.LM361M/NOPB
£1.821
Each (In a Tube of 55)
Units
High Speed Surface Mount SOIC Dual TTL 2 0.02µs 14 - 8.738 x 3.988 x 1.499mm 8.74mm 3.99mm 1.5mm -
RS Stock No. 661-2599
Mfr. Part No.LM339ADR
£0.21
Each (In a Pack of 10)
Units
General Purpose Surface Mount SOIC Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 8.65 x 3.91 x 1.58mm 8.65mm 3.91mm 1.58mm -
RS Stock No. 761-5864
Mfr. Part No.LM361M/NOPB
£2.16
Each (In a Pack of 5)
Units
High Speed Surface Mount SOIC Dual TTL 2 0.02µs 14 - 8.738 x 3.988 x 1.499mm 8.74mm 3.99mm 1.5mm -
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Description:
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