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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8SOIC
- Series：TSM93x
- Mfr：Silicon Labs
- Package：Tape & Reel (TR)
- Type：with Voltage Reference
- Number of Elements：1
- Output Type：CMOS, Push-Pull, TTL
- Voltage - Supply, Single/Dual (±)：2.5V ~ 11V, ±1.25V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 5V
- Current - Input Bias (Max)：-
- Current - Output (Typ)：40mA
- Current - Quiescent (Max)：3.2µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：50mV
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TSM931CSA+T is a single-channel, ultra-low-power analog comparator manufactured by Silicon Labs. It operates on a single supply voltage ranging from +2.5V to +11V or dual supplies of ±1.25V to ±5.5V. The device features an internal 1.182V ±2% reference voltage and includes an adjustable hysteresis pin for noise immunity. It provides push-pull TTL/CMOS-compatible outputs capable of sourcing up to 40mA continuously. The component is housed in an 8-pin SOIC package and supports an industrial temperature range of 0°C to +70°C.
Feature Summary
- Integrates an internal 1.182V ±2% voltage reference for simplified circuit design.
- Features an adjustable hysteresis input pin to prevent output oscillation caused by noise.
- Delivers high continuous source current capability of up to 40mA with crowbar-current-free switching.
- Supports both single and dual power supply configurations with wide common-mode input ranges.
Applications
- Threshold detectors
- Window comparators
- Level translators
- Oscillator circuits
- Battery-powered systems
Procurement Notes
Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm that the 'C' designation corresponds to the commercial temperature range of 0°C to +70°C. Ensure the 8-pin SOIC form factor matches the target PCB footprint. Cross-reference the part number against the official datasheet to confirm electrical compatibility with existing designs.
Selection Notes
Select this component for applications requiring low quiescent current consumption alongside high output drive capability. The integrated reference eliminates the need for external voltage sources, reducing bill of materials. Consider the adjustable hysteresis feature if the application environment presents significant signal noise. Verify that the required operating temperature falls within the specified commercial range.
Part Context
This device belongs to the TSM931-TSM934 family of micropower analog comparators. It serves as an alternate source for the MAX931-MAX934 family, offering identical electrical performance and form factors. The family includes single, dual, and quad variants, with the TSM931 providing a single comparator with an internal reference.
Replacement Considerations
The TSM931CSA+T is electrically equivalent to the Maxim Integrated MAX931. Designers replacing legacy MAX931 components can utilize this part without modifying the circuit schematic or layout due to pin-to-pin and parameter compatibility.
FAQ
How is external hysteresis configured on the TSM931?
External hysteresis is added using two resistors connected to the HYST pin. Connecting the HYST pin directly to the REF pin disables external hysteresis.
What is the maximum continuous source current for the output stage?
The output stage is capable of sourcing up to 40mA of continuous current while maintaining TTL/CMOS compatibility.
