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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8SOIC
- Series：TSM97x
- Mfr：Silicon Labs
- Package：Tape & Reel (TR)
- Type：with Voltage Reference
- Number of Elements：1
- Output Type：Open-Drain
- Voltage - Supply, Single/Dual (±)：2.5V ~ 11V, ±1.25V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 2.5V
- Current - Input Bias (Max)：0.005µA @ 2.5V
- Current - Output (Typ)：40mA
- Current - Quiescent (Max)：4µA
- CMRR, PSRR (Typ)：67dB CMRR, 67dB 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 TSM971CSA+T is a single ultra-low-power analog comparator manufactured by Silicon Labs, housed in an 8-pin SOIC package. 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 reference with ±1% accuracy and supports adjustable hysteresis via an external HYST pin. Supply current is maximized at 4μA over the temperature range. Propagation delay is 12μs at 10mV overdrive, with open-drain outputs suitable for wired-OR configurations.
Feature Summary
- Ultra-low quiescent current consumption optimized for battery-powered applications
- Integrated precision voltage reference with specified tolerance
- Open-drain output stages enabling wired-OR logic and level translation
- Adjustable hysteresis capability through dedicated external control pin
Applications
- Threshold detectors
- Window comparators
- Level translators
- Oscillator circuits
- Battery-powered systems
Procurement Notes
Verify that the ordering suffix 'T' corresponds to the tape and reel carrier format as documented in the manufacturer's ordering information. Confirm the specific temperature grade matches the required operational environment, as the 'C' suffix indicates commercial range. Ensure compatibility with existing PCB footprints for the 8-pin SOIC package before finalizing procurement decisions.
Selection Notes
Select this component when a single comparator with an integrated reference is required. The TSM971 is distinct from other family members like the TSM972 due to its single-channel architecture and dedicated ground pin for the output stage. Consider the adjustable hysteresis feature if noise immunity is critical for the application design.
Part Context
This part belongs to the TSM97x/98x family of low-voltage micropower analog comparators. It serves as an alternate source for the Maxim Integrated MAX971/MAX973 devices. The family includes single, dual, and quad variants with varying reference accuracies and hysteresis options, all sharing similar electrical characteristics and form factors.
Replacement Considerations
Publicly confirmed substitute part numbers include the MAX971CSA+T and MAX971CSA+. These components are electrically and form-factor identical to the TSM971 series.
