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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8SOIC
- Series：TSM93x
- Mfr：Silicon Labs
- Package：Tube
- 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+ is a single-channel analog comparator from the TSM93x family, manufactured by Silicon Labs. It operates on single supplies of +2.5V to +11V or dual supplies of ±1.25V to ±5.5V. The device features an internal 1.182V ±2% reference voltage and adjustable hysteresis via a dedicated pin. Quiescent current is typically 3.2µA at 25°C and max 4µA over temperature. Propagation delay is 12µs at 10mV overdrive. It provides push-pull TTL/CMOS-compatible outputs capable of sourcing up to 40mA continuously.
Feature Summary
- Incorporates an internal 1.182V reference voltage with ±2% accuracy.
- Features adjustable external hysteresis via a dedicated HYST pin.
- Provides crowbar-current-free switching for glitch-free output transitions.
- Delivers high continuous source current capability of up to 40mA.
Applications
- Threshold detectors
- Window comparators
- Level translators
- Oscillator circuits
- Battery-powered systems
Procurement Notes
Verify the specific suffix CSA+ indicates the commercial temperature range (0°C to +70°C) and SOIC-8 package configuration. Confirm that the component is sourced as an alternate supplier part electrically identical to the MAX931 series. Ensure compatibility with existing board layouts designed for the original manufacturer's footprint and pinout specifications.
Selection Notes
Select this component when a low-power single-supply comparator with an integrated reference is required. The TSM931CSA+ is suitable for applications needing adjustable hysteresis without complex feedback networks. Consider its 40mA output drive capability for direct LED or logic interface driving. Verify that the input common-mode range extending to the negative rail meets system signal requirements.
Part Context
The TSM931CSA+ belongs to the TSM931-TSM934 family of ultra-low-power comparators. This family is electrically and form-factor identical to the Maxim Integrated MAX931-MAX934 series. The 'C' suffix denotes the commercial operating temperature range, while 'S' indicates the SOIC-8 package type. These devices are designed for 3V and 5V single-supply applications.
Replacement Considerations
The TSM931CSA+ serves as an alternate source for the MAX931. Verify pinout compatibility and electrical equivalence before substitution. Other family members include TSM932, TSM933, and TSM934 for dual and quad configurations.
