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Product Detailed Parameters
- Description：IC COMPARATOR 2 W/VOLT REF 8SOIC
- Series：TSM97x
- Mfr：Silicon Labs
- Package：Tape & Reel (TR)
- Type：with Voltage Reference
- Number of Elements：2
- 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)：6µA
- CMRR, PSRR (Typ)：67dB CMRR, 67dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：50mV
- Operating Temperature：-40°C ~ 85°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 TSM973ESA+T is a dual micropower analog comparator in an 8-pin SOIC package. It operates on single supplies 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 adjustable hysteresis via the HYST pin. Supply current is 6μA maximum over temperature. Propagation delay is 12μs at 10mV overdrive. Inputs range from V- to V+ minus 1.3V, and outputs are open-drain.
Feature Summary
- Dual comparators with integrated 1.182V voltage reference
- Adjustable external hysteresis capability
- Open-drain output stages for wired-OR configurations
- Wide common-mode input voltage range
Applications
- Threshold detectors
- Window comparators
- Level translators
- Oscillator circuits
- Battery-powered systems
Procurement Notes
Verify component authenticity through authorized channels as this part may be subject to obsolescence notices. Confirm that the ordering suffix corresponds to the tape and reel packaging format required for automated assembly processes. Ensure compatibility with existing board layouts before finalizing procurement decisions.
Selection Notes
Select this component when dual comparison functions are required alongside a precise internal reference voltage. The open-drain outputs facilitate wired-OR logic implementation without additional pull-up components. Verify that the supply voltage range aligns with system requirements and that the propagation delay meets timing constraints for the specific application.
Part Context
This device belongs to the TSM97x/98x family of low-voltage, micropower analog comparators manufactured by Silicon Labs. It serves as an alternate source for Maxim Integrated 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
The TSM973ESA+T is electrically and form-factor identical to the MAX973. Designers replacing legacy MAX973 units can utilize this component directly without circuit modifications. Verify that the replacement matches the specific temperature grade and packaging requirements of the original design.
FAQ
How is hysteresis configured on the TSM973?
Hysteresis is adjusted using two external resistors connected between the REF, HYST, and V- pins. Connecting the HYST pin directly to the REF pin disables hysteresis.
What is the input voltage range for the TSM973?
The input common-mode voltage range extends from the negative supply rail (V-) to within 1.3V of the positive supply rail (V+).
