TS372ID - Dual CMOS Voltage Comparator, 8-SOIC | STMicroelectronics
Артикул: TS372ID ✓ АктивенTS372ID Обзор
A voltage comparator is an analog integrated circuit that compares two input voltages and produces a digital logic state indicating which input is higher. The TS372ID belongs to the comparator category within analog and mixed-signal integrated circuits, where it is used for threshold detection, level sensing, signal conditioning, and simple control decisions. Its dual architecture allows two independent comparisons in one package, reducing component count when two threshold functions are required.
The TS372ID uses STMicroelectronics silicon linMOS technology and emphasizes low power consumption. The manufacturer specifies a very low supply current of 0.1 mA per comparator, independent of supply voltage. Its extremely low input bias current is typically 1 pA, and its input offset current is also typically 1 pA, making the device suitable for high-impedance sensing circuits where source leakage could otherwise change the decision point.
The wide operating-supply range allows the same device family to support low-voltage single-rail systems or balanced dual rails. Because the outputs are open-drain, each output requires an external pull-up resistor. This arrangement supports wired logic functions and allows the output transition speed to be adjusted through the pull-up resistance and circuit capacitance, but it also means an external pull-up is required to obtain a valid high output state.
Typical uses include battery-powered threshold detection, sensor signal conditioning, overvoltage and undervoltage monitoring, window-comparison functions, and low-power control logic. When two comparators operate from the same supply, their individual input, output, and supply pins still require careful routing to avoid unintended coupling or output contention.
For layout, place input and output traces away from high-current switching nodes and preserve a short return path to the supply ground. Select pull-up resistors according to the required rise time and available output current, and ensure that the input common-mode range remains within the limits stated in the manufacturer datasheet for the selected supply voltage. Decoupling capacitors should be placed close to the supply pins, with the ground connection kept short.
This page organizes the TS372ID supply, input-current, package, output, and application information into an engineering-oriented selection guide. It also documents where to find the official datasheet, how to interpret the package and pinout, what to verify before making a replacement, and how to request a quotation through the XAIPART Request a Quote form.
Аналоги без доработки для TS372ID — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
TS372IDT
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TS372ID Максимальные параметры и электрические характеристики
| Comparator Type | Low-power dual CMOS precision voltage comparator |
| Number of Comparators | 2 independent comparators |
| Single-Supply Operating Range | 3 V to 16 V |
| Dual-Supply Operating Range | +/-1.5 V to +/-8 V |
| Supply Current per Comparator | 0.1 mA typical, independent of supply voltage |
| Input Bias Current | 1 pA typical |
| Input Offset Current | 1 pA typical |
| Maximum Input Offset Voltage | 12 mV |
| Тип выхода | Open-drain |
| Logic Compatibility | TTL-compatible |
| Process Technology | Silicon linMOS |
| Корпус | 8-pin SOIC |
| Тип монтажа | Surface mount |
| Диапазон рабочих температур | -40 C to +125 C |
Конфигурация выводов TS372ID
| Контакт 1 | OUT 1 — Comparator 1 open-drain output |
| Контакт 2 | IN 1- — Comparator 1 inverting input |
| Контакт 3 | IN 1+ — Comparator 1 non-inverting input |
| Контакт 4 | V- — Negative supply or ground in single-supply operation |
| Контакт 5 | IN 2+ — Comparator 2 non-inverting input |
| Контакт 6 | IN 2- — Comparator 2 inverting input |
| Контакт 7 | OUT 2 — Comparator 2 open-drain output |
| Контакт 8 | V+ — Positive supply input |
Типичное применение
TS372ID подходит для 6 применениеs: Battery-Powered Threshold Detection, High-Impedance Sensor Conditioning, Overvoltage and Undervoltage Monitoring, Industrial Level Sensing, Open-Collected Logic Interface, Portable Medical and Sensor Modules.
Battery-Powered Threshold Detection
The TS372ID fits battery-powered threshold detection because each comparator consumes only 0.1 mA typical supply current, independent of supply voltage, while its 1 pA typical input bias current limits loading on the sensed signal. Use one channel to compare a divided battery voltage against a reference and the other for a second threshold or polarity condition. Because the outputs are open drain, fit pull-up resistors selected for the required logic rise time, and check the input common-mode limits for the chosen 3 V to 16 V supply configuration.
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High-Impedance Sensor Conditioning
The TS372ID is suitable for conditioning signals from high-impedance sensors because its typical input bias current is only 1 pA and its typical input offset current is also 1 pA. Place the sensor or resistive divider directly at the comparator inputs to minimize leakage-related errors. Account for the maximum input offset voltage of 12 mV when setting a precise switching threshold, and use short, guarded input traces if leakage, humidity, or board contamination could otherwise shift the crossing point.
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Overvoltage and Undervoltage Monitoring
The two independent TS372ID channels support a compact supply-window monitor, with one comparator detecting an overvoltage condition and the other detecting an undervoltage condition. Operate from 3 V to 16 V single supply or a suitable dual-supply arrangement, and divide the monitored voltage so both inputs remain within the datasheet common-mode limits. The open-drain outputs can be pulled up and combined for an alarm or enable signal, while the low 0.1 mA per-comparator current suits systems where monitoring power must remain small.
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Industrial Level Sensing
The TS372ID can implement a robust industrial level or limit switch by comparing a scaled tank or process signal against a set threshold. Its 1 pA typical input bias current reduces disturbance of high-resistance sensing networks, while the wide 3 V to 16 V single-supply range supports common industrial control rails. Use the dual channels for high and low limits, ensure pull-up faults do not create false states, and isolate the sensitive input routing from motors, relays, and other switching loads to prevent comparison-point errors.
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Open-Collected Logic Interface
The open-drain TS372ID output is useful when a decision must drive a wired-AND signal, fault bus, or relay-control stage. Each comparator can pull its output low, and an external pull-up establishes the high state when neither active-low path asserts the bus. Select the pull-up value from the required rise time and permissible sink current rather than using a fixed value without calculation. Confirm that the downstream device recognizes a TTL-compatible logic level and that a bus fault cannot produce an unintended power-on state.
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Portable Medical and Sensor Modules
The TS372ID can support threshold decisions in compact sensor modules where comparator power and input loading are important. The dual channel provides two independent measurements, while 0.1 mA typical supply current per comparator and 1 pA typical input bias current reduce demand on the power budget and source impedance. In medical-adjacent equipment, use the component only within the application requirements and environmental limits stated by its manufacturer documentation, paying particular attention to the 12 mV maximum input offset voltage and defined operating-temperature range.
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Сводка рекомендуемых товаров
Справочные инженерные данные для TS372ID — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | TS372IDT |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 8-pin SOIC | 8-pin SOIC |
| Comparator Count | 2 independent comparators | 2 independent comparators |
| Single-Supply Range | 3 V to 16 V | 3 V to 16 V |
| Dual-Supply Range | +/-1.5 V to +/-8 V | +/-1.5 V to +/-8 V |
| Supply Current per Comparator | 0.1 mA typical | 0.1 mA typical |
| Input Bias Current | 1 pA typical | 1 pA typical |
| Maximum Input Offset Voltage | 12 mV | 12 mV |
| Output Type | Open-drain, TTL-compatible | Open-drain, TTL-compatible |
Ключевые отличия
- Two independent low-power comparison channels (против TS372IDT)
- Very low input loading for high-impedance sensing (против TS372IDT)
- Wide single-supply operating range (против TS372IDT)
Заметки по проектированию
Do not treat an open-drain output as actively driven high. Each TS372ID output requires an external pull-up resistor, and the resistor value should be selected from the required rise time, output capacitance, and permissible sink current. If two outputs are connected to one node, ensure their pull-up voltage and logic design prevent contention. The pull-up must also remain compatible with the downstream device's input thresholds.
Keep the two comparator input nets short and route them away from switching nodes, relay coils, and high-current supply paths. Place supply-decoupling capacitors close to the device supply pins and provide a low-impedance ground return. For high-impedance sources, minimize exposed copper and board contamination around the inputs, since even small leakage can shift the threshold created by a large feedback or divider resistance.
Include the TS372ID's 0.1 mA typical supply current per comparator in the power budget, along with pull-up current and the current drawn by downstream logic. The stated comparator current is independent of supply voltage, but actual application consumption also depends on output state and switching activity. In a dual-channel design, two continuously active comparators can consume twice the per-channel current, so disable or control an unused channel when system power is critical.
Информация о соответствии
The manufacturer datasheet establishes the electrical function and operating ranges, but no explicit compliance declaration was present in the cited product text. Compliance fields therefore remain unknown rather than being assumed.