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 mount
Through hole
Comparator power supply types.
Dual
Single

Various package types, pins, sizes, channels per chip, PSRR (power supply rejection ratio), CMRR (common mode rejection ratio) are all available.

...
Read more Read less

Filters

Viewing 1 - 20 of 1153 products
Results per page
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. 903-4318
Mfr. Part No.LM393MX
$0.491
Each (In a Pack of 50)
units
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 145-4483
Mfr. Part No.LM393MX
$0.137
Each (On a Reel of 3000)
units
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 166-1847
Mfr. Part No.LM393M
$0.206
Each (In a Tube of 90)
units
Differential Surface Mount SOIC Dual, Single Open Collector 2 1.4µs 8 2 → 36 V 5 x 4 x 1.5mm 5mm 4mm 1.5mm -
RS Stock No. 761-4463
Mfr. Part No.LM393M
$0.621
Each (In a Pack of 10)
units
General Purpose Surface Mount SOP Dual, Single TTL 2 1.5µs 8 36 V 4.92 x 3.95 x 1.55mm 4.92mm 3.95mm 1.55mm -
RS Stock No. 100-0752
Mfr. Part No.LM393D
$0.193
Each (In a Tube of 75)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS Stock No. 528-343
Mfr. Part No.LM393DR
$0.223
Each (In a Pack of 25)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector 2 1.3µs 8 3 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS Stock No. 527-530
Mfr. Part No.LM211DR
$0.364
Each (In a Pack of 25)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS Stock No. 858-411
Mfr. Part No.LM339D
$0.70
Each
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. 165-3394
Mfr. Part No.MCP6566RT-E/OT
BrandMicrochip
$0.668
Each (On a Reel of 3000)
units
General Purpose Surface Mount SOT-23 Single Open Drain 1 - 5 1.8 → 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 65dB
RS Stock No. 179-1657
Mfr. Part No.LM211D
$1.132
Each (In a Tube of 75)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS Stock No. 738-7032
Mfr. Part No.MCP6566RT-E/OT
BrandMicrochip
$0.818
Each (In a Pack of 5)
units
General Purpose Surface Mount SOT-23 Single Open Drain 1 - 5 1.8 to 5.5 V 3.1 x 1.8 x 1.3mm 3.1mm 1.8mm 1.3mm 65dB
RS Stock No. 517-2352
Mfr. Part No.LM211D
$1.007
Each (In a Pack of 20)
units
General Purpose Surface Mount SOIC Dual, Single Open Collector/Emitter 1 0.165µs 8 5 → 28 V 4.9 x 3.91 x 1.58mm 4.9mm 3.91mm 1.58mm -
RS Stock No. 121-8421
Mfr. Part No.LM339N
$0.634
Each (In a Tube of 25)
units
General Purpose Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -
RS Stock No. 917-0760
Mfr. Part No.TS861ILT
$0.78
Each (In a Pack of 10)
units
Dual CMOS, Rail to Rail Surface Mount SOT-23 Single Push-Pull 1 500ns 5 2.7 → 10 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 70dB
RS Stock No. 121-8704
Mfr. Part No.LM339N/NOPB
$1.068
Each (In a Tube of 25)
units
General Purpose Through Hole MDIP Dual, Single Open Collector 4 1.3µs 14 3 to 28 V 19.05 x 6.35 x 3.3mm 19.05mm 6.35mm 3.3mm -
RS Stock No. 533-8237
Mfr. Part No.LM339N/NOPB
$1.42
Each
units
General Purpose Through Hole MDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.05 x 6.35 x 3.3mm 19.05mm 6.35mm 3.3mm -
RS Stock No. 168-8973
Mfr. Part No.TS861ILT
$0.758
Each (On a Reel of 3000)
units
Dual CMOS, Rail to Rail Surface Mount SOT-23 Single Push-Pull 1 500ns 5 2.7 → 10 V 3 x 1.75 x 1.3mm 3mm 1.75mm 1.3mm 70dB
RS Stock No. 527-198
Mfr. Part No.LM339N
$0.669
Each (In a Pack of 25)
units
General Purpose Through Hole PDIP Dual, Single Open Collector 4 1.3µs 14 3 → 28 V 19.3 x 6.35 x 4.57mm 19.3mm 6.35mm 4.57mm -
RS Stock No. 661-2744
Mfr. Part No.TLV3701CDBVT
$2.302
Each (In a Pack of 5)
units
Low Power Surface Mount SOT-23 Dual, Single Push-Pull 1 240µs 5 3 → 15 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 88dB
RS Stock No. 162-5637
Mfr. Part No.TLV3701CDBVT
$1.881
Each (On a Reel of 250)
units
Low Power Surface Mount SOT-23 Dual, Single Push-Pull 1 240µs 5 3 → 15 V 2.9 x 1.6 x 1.15mm 2.9mm 1.6mm 1.15mm 88dB
Related Products
The Texas Instruments LM139, LM239, LM339 and LM2901 ...
Description:
The Texas Instruments LM139, LM239, LM339 and LM2901 are quad differential input voltage comparators designed to operate from a single power supply over a wide range of voltages. The common mode input voltage range includes ground and the devices have ...
The Texas Instruments LM193, LM293, LM393 and LM2903 ...
Description:
The Texas Instruments LM193, LM293, LM393 and LM2903 are dual differential input voltage comparators designed to operate from a single power supply over a wide range of voltages. The common mode input voltage range includes ground and the devices have ...
LM2903FVJ is two-channel ground sense comparator. It have ...
Description:
LM2903FVJ is two-channel ground sense comparator. It have features of wide operating voltage that ranges from 3V to 32V with low supply current. This product is suitable for various applications. Wide Operating Supply VoltageGround-sensed Input and OutputOpen Collector OutputWide Operating ...
High reliability BA2903YFVM-C / BA2903YF-C / BA2901YFVM-C / ...
Description:
High reliability BA2903YFVM-C / BA2903YF-C / BA2901YFVM-C / BA2901YF-C, incorporate high gain and 2 or 4 circuits on a single chip. A wide operating voltage range 2 to 36V and low current consumption ensure compatibility with a wide range of ...