TS372IN - Dual CMOS Voltage Comparator, 8-DIP | STMicroelectronics
料号： TS372IN ✓ 量产中TS372IN 概述
A voltage comparator is an analog mixed-signal semiconductor that compares two input voltages and produces a digital-level indication of their relationship. The TS372IN belongs to the comparator hierarchy and uses CMOS input stages with open-drain outputs, allowing its outputs to support TTL-compatible interfacing. Two independent comparator channels in one package reduce component count when a system needs two sensing or threshold decisions.
Key features include independent comparator operation, low supply current of 0.1 mA per comparator, and operation from either a single or dual supply. The single-supply range of 3 V to 16 V supports industrial logic systems, while the ±1.5 V to ±8 V dual-supply range permits comparison of signals around ground. The open-drain output architecture also enables wired-AND behavior when multiple comparator outputs share a pull-up resistor.
The differential CMOS architecture provides a favorable balance between speed, power consumption, and input behavior. With a response time of 600 ns, the TS372IN is suitable for threshold monitoring, signal crossing detection, and control-loop qualification without the delay of slower micropower comparators. Its two independent channels can monitor separate sensor nodes or provide complementary decisions, although common-mode range and input-bias details should be checked against the manufacturer datasheet for the exact operating conditions.
Typical applications include industrial sensor thresholding, battery and power-supply monitoring, overvoltage detection, window comparison in control systems, and low-power logic interfaces. The device can also participate in line-driver or receiver designs where open-drain outputs are pulled up to a suitable logic supply. In dual-supply systems, it is useful when signals may fall below ground or rise above a midpoint reference.
Design the input network so the differential signal remains within the comparator’s specified common-mode operating range, especially when operating from a 3 V single supply. Place the pull-up resistor directly at each open-drain output and confirm that its value produces the intended rise time. Do not permit an output to exceed its supply voltage, and use the DIP footprint without relying on exposed-pad thermal dissipation because the package does not provide one.
This product page combines supply-range and timing details with package-level engineering guidance, application analysis, and qualified same-footprint replacement information. It is intended to help engineers select the TS372IN, plan the input and output network, and assess drop-in alternatives without confusing package compatibility with guaranteed functional equivalence.
直接替换替代料： TS372IN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TS372IN （相同外形与封装尺寸） ——差异在于 Comparator Type, Number of Comparators, Output Type, Response Time, Supply Current per Comparator.
TS372CP
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TS372CN
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →TLC372CP
✅ 直接替换📋 参考替代料（不在目录中）
TS372IN 最大额定值与电气特性
| Comparator Type | Low-power dual CMOS voltage comparator |
| Number of Comparators | 2 independent comparators |
| Single-Supply Voltage Range | 3 V to 16 V |
| Dual-Supply Voltage Range | ±1.5 V to ±8 V |
| Supply Current per Comparator | 0.1 mA |
| Response Time | 600 ns |
| Maximum Input Offset Voltage | 12 mV |
| Maximum Average Bias Current | 0.0003 µA |
| 输出类型 | Open-drain CMOS with TTL compatibility |
| Input Technology | Differential CMOS |
| Process Technology | Silicon linear MOS process |
| 封装 | 8-DIP through-hole package |
| Number of Terminals | 8 terminals |
| Terminal Form | Through-hole |
| RoHS Compliance | unknown |
| REACH Compliance | unknown |
TS372IN 引脚配置
| 引脚 1 | OUT1 — Comparator 1 open-drain output |
| 引脚 2 | IN1- — Comparator 1 inverting input |
| 引脚 3 | IN1+ — Comparator 1 non-inverting input |
| 引脚 4 | V- — Negative supply or ground connection |
| 引脚 5 | IN2+ — Comparator 2 non-inverting input |
| 引脚 6 | IN2- — Comparator 2 inverting input |
| 引脚 7 | OUT2 — Comparator 2 open-drain output |
| 引脚 8 | V+ — Positive supply connection |
典型应用
TS372IN 适用于 6 应用s: Industrial Sensor Thresholding, Battery Supply Monitoring, Overvoltage and Undervoltage Detection, Signal Crossing Detection, Low-Power Logic Interface, Dual-Supply Analog Window Monitor.
Industrial Sensor Thresholding
The TS372IN is suitable for monitoring a sensor signal against a reference threshold in industrial control equipment. Its two independent channels can compare two different sensor nodes, or one channel can provide hysteresis around a switching point. The 600 ns response time resolves threshold events quickly, while the 0.1 mA current per comparator limits the load on low-power sensors. The 3 V to 16 V single-supply range covers common industrial logic rails, and the open-drain output can drive an alert input through a suitable pull-up. Verify the input common-mode range for the particular sensor and protect exposed analog inputs from transients.
推荐
Battery Supply Monitoring
The TS372IN can supervise a battery-derived rail when its voltage remains within the device’s 3 V to 16 V single-supply range or uses an appropriate supported dual supply. Two independent comparator channels allow separate checks for minimum operating voltage and an overvoltage condition. Its 0.1 mA current per comparator is valuable in continuously powered systems because the monitoring function adds comparatively little current demand. The 600 ns response permits rapid fault signaling, and open-drain outputs allow the supervisor to combine conditions with pull-up logic. Account for input offset, resistor tolerance, and hysteresis when choosing detection thresholds.
推荐
Overvoltage and Undervoltage Detection
The TS372IN can implement separate overvoltage and undervoltage detection by using its two independent comparator channels. Each channel compares a divided version of the monitored rail against a reference, while the open-drain outputs provide active-low fault indications suitable for pull-up resistors. A 3.3 V or 5 V system falls within the documented 3 V to 16 V single-supply range, and the low 0.1 mA per-comparator current supports low-power designs. The 12 mV maximum input offset and resistor tolerance should be included in threshold error analysis, particularly when the detection window must remain narrow.
推荐
Signal Crossing Detection
The TS372IN can detect when an analog signal crosses a reference level in instrumentation, waveform conditioning, and control logic. A response time of 600 ns provides a defined edge for downstream digital circuits without requiring a continuously operating high-speed comparator. The differential CMOS inputs support comparison of two related voltages, and the two channels can detect different crossing directions or monitor two thresholds. Use the open-drain output with a pull-up appropriate for the receiving logic. Verify common-mode limits, input bias effects, and output rise time at the selected pull-up resistance before using the result as a precision timing reference.
推荐
Low-Power Logic Interface
The TS372IN can bridge a low-power analog decision to digital logic using its open-drain CMOS outputs and TTL-compatible behavior. Pulling each output up to the receiving logic rail creates a conventional active-high or active-low digital result while avoiding a continuously driven totem-pole output stage. The dual-channel arrangement is useful when a sensor or control subsystem produces two related conditions. At 0.1 mA per comparator, the device supports compact embedded systems that need continuous decisions at low current. Confirm voltage levels, input ranges, and timing against the connected controller, and use a resistor network to establish hysteresis where chatter could occur.
推荐
Dual-Supply Analog Window Monitor
The TS372IN is well suited to bipolar systems operating from ±1.5 V to ±8 V because its dual-supply capability lets the comparator inputs move both above and below ground. Two channels can establish upper and lower limits around a bipolar reference or monitor positive and negative rails independently. Its 600 ns response supports prompt fault detection, while 0.1 mA per comparator limits continuous overhead. The 12 mV maximum input offset contributes to the total threshold error and must be combined with reference and divider tolerances. Open-drain outputs can be pulled up to the system’s fault-logic rail after checking all voltage limits.
推荐
推荐产品汇总
工程参考数据： TS372IN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TS372CP | TS372CN | TLC372CP |
|---|---|---|---|---|
| Package | 8-DIP | 8-DIP | 8-DIP | PDIP-8 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments |
| Comparator Count | 2 independent comparators | 2 independent comparators | 2 independent comparators | 2 comparators |
关键差异点
- Low dual-channel power demand （对比 TLC372CP)
- Dual single- and dual-supply flexibility （对比 TS372CP)
- Explicit CMOS open-drain interface （对比 TLC372CP)
设计说明
Design the supply network for both single-rail and dual-rail operation. For a 3 V to 16 V single supply, connect V- to ground and use the supported dual-supply arrangement only when negative input or output signaling is required. Add local bypass capacitance close to the supply pins, and ensure any output pull-up remains within the permitted voltage range.
Route the two differential input pairs as compact, matched paths to reduce susceptibility to differential noise and unintended switching. Keep comparator inputs away from fast switching nodes and the clocked circuitry of adjacent digital components. Because the TS372IN uses a through-hole DIP package, provide adequate solder-joint area and mechanical support on boards subject to vibration or repeated connector insertion.
Do not treat the open-drain outputs as actively driven push-pull outputs. Each output needs a pull-up resistor to a valid logic rail, and the resistor should be placed near the output. Before substituting another comparator, verify input common-mode range, offset, response time, supply limits, and output behavior; a matching 8-pin package alone does not guarantee electrical equivalence.
Use a pull-up value that balances output rise time, current consumption, and interference susceptibility. A smaller pull-up produces a faster edge but increases dynamic current; a larger pull-up reduces current demand but can slow the logic transition. For noisy analog inputs, add positive feedback to create controlled hysteresis and prevent repeated output transitions around the comparison threshold.
合规信息
The manufacturer datasheet excerpts identify TS372IN as a low-power dual CMOS voltage comparator but do not state the requested compliance or environmental certifications. AEC-Q100 is marked unknown because the data does not explicitly qualify or disqualify the part.
