This Product Selection Guide contains information to help select products in the Comparators category on DigiKey.com
Products in the logic comparator family are used to generate an output based on a comparison of information represented in a digital format; identity types indicate whether or not two inputs are identical, and magnitude types also indicate which of the two inputs is greater when they are not identical. They are distinct from devices that compare the magnitude of two analog inputs, which are known as linear comparators and are cataloged separately.
SelectionCharacteristics
Type: Indicates the operational mode(s) of a featured IC, which has categorical significance for performance traits such as electrical efficiency.
Number of Bits: Indicates the width of the digital word on which a device operates.
Output: Indicates the logical operations on input data that are presented as outputs by a device.
Output Function: Indicates the logical operations on input data that are presented as outputs by a device.
Voltage - Supply: Typically represented by a range, this indicates the low and high voltage limits which one can expect standard operation. Voltages outside this range may damage the device and other system components.
Current - Output High, Low: The maximum recommended current flow through a device’s output pin. Multiple values reflect ratings that differ depending on the direction of the current flow.
Max Propagation Delay @ V, Max CL: Characterizes the maximum time delay between the assertion of device input and the appearance of the resulting change in device output, subject to the indicated supply voltage and load capacitance conditions.
Current - Quiescent (Iq): Characterizes the amount of supply current required to power a device’s internal functions. Measured with no output load and inputs connected to fixed-voltage signals defined by the manufacturer.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Package / Case: Indicates the type of protective case used on an electronic component to allow easy handling, installation, and protection. This selection was determined to be the closest industry standard applicable to the suppliers device packaging. Typically it is best to check the actual dimensions from the datasheet rather than depend on this terminology when designing your circuit.
Supplier Device Package: This is what the manufacturer calls the package of this device. They are manufacturer specific. It is typically best to use the actual dimensions from the datasheets rather than to go by this terminology when designing your circuit.
Mounting Type: Indicates how the device is attached.
ProductExamples
| MFR PART # | CD4063BE |
|---|---|
| DIGIKEY PART # | 296-14120-5-ND |
| MANUFACTURER | Texas Instruments |
| DESCRIPTION | Magnitude Comparator Bit Active High Output A<B, A=B, A>B 16-PDIP |
| DATASHEET | Click Here |
SchematicSymbol
Schematic symbol courtesy of Scheme-it. Please see their website for more information and symbols.
MediaLinks
Videos
Low Power Single-Dual Comparator Evaluation Boards - NCS22X0A
Operational Amplifiers And Comparators
Comparator
Articles
The Essentials of Analog Voltage Comparators and How to Use Them: Level Detection to Oscillators
Comparator
Product Training Modules
Comparator
Blogs
An Understanding of How LiDAR Works Shows the Importance of Careful TIA and Comparator Selection
TechForum
Input voltage range and Common mode voltage range for a comparator
Adding Hysteresis on Comparators
Comparator