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Product Detailed Parameters
- Description：IC COMPARATR 4 W/VOLT REF 16SOIC
- Series：TSM98x
- Mfr：Touchstone Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：with Voltage Reference
- Number of Elements：4
- 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)：8.5µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：50mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The TSM984ESE+T is a quad, low-voltage, micropower analog comparator manufactured by Silicon Laboratories. It operates from single supplies of +2.5V to +11V or dual supplies of ±1.25V to ±5.5V. The device features open-drain output stages and includes an internal 1.182V reference with ±2% accuracy. It draws a maximum supply current of 8.5μA over the extended temperature range of -40°C to +85°C. Propagation delay is 12μs at 10mV overdrive. The component is housed in a 16-pin SOIC package.
Feature Summary
- Quad configuration with integrated voltage reference
- Ultra-low quiescent current consumption
- Open-drain outputs for wired-OR capability
- Wide input common-mode voltage range
Applications
- Threshold detectors
- Window comparators
- Level translators
- Oscillator circuits
- Battery-powered systems
Procurement Notes
Verify the ordering suffix 'E' indicates the extended industrial temperature range (-40°C to +85°C) rather than the commercial grade. Confirm the '+T' designation corresponds to tape and reel packaging as specified in the manufacturer's ordering information. Ensure compatibility with the 16-pin SOIC footprint during procurement validation.
Selection Notes
Select this part when a quad comparator with an internal reference is required for space-constrained designs. It serves as an alternate source for the MAX984 family. Consider the open-drain output limitation for logic interfacing and verify that the 1.182V reference meets the specific threshold requirements of the application circuit.
Part Context
This component belongs to the TSM971/972/973/82/84 family of micropower analog comparators. These devices are electrically and form-factor identical to the Maxim Integrated MAX971/MAX972/MAX973/MAX982/MAX984 series. The family offers single, dual, and quad configurations with varying reference and hysteresis capabilities.
Replacement Considerations
The datasheet explicitly identifies the TSM984 as an alternate source for the MAX984. Designers replacing legacy MAX984 components should verify pinout compatibility and electrical parameter alignment within their specific operating conditions.
FAQ
Does the TSM984 support adjustable hysteresis?
No, the TSM984 does not have an internal HYST pin or built-in adjustable hysteresis. Hysteresis must be implemented externally using positive feedback resistors.
What is the function of the GND pin on the TSM984?
The TSM984 includes a dedicated GND pin. The output stages sink current to this GND pin, allowing the negative supply (V-) to be set below ground potential while maintaining TTL/CMOS compatible output levels relative to GND.
Can the TSM984 operate with a supply voltage lower than 2.5V?
Yes, the TSM984 can operate down to a 1.5V supply voltage. However, the internal reference voltage ceases to function below 2.2V, and performance characteristics such as propagation delay may degrade at these lower voltages.
