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STMicroelectronics TS372CDT
- Part No.:
- TS372CDT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS372CDT.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,308
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Product details
Overview
TS372CDT from STMicroelectronics is a dual low-power CMOS voltage comparator operating from 3 V to 16 V single supply or ±1.5 V to ±8 V dual supplies, featuring 0.1 mA/comparator supply current, 1 pA typical input bias current, and 200 ns typical response time. It is used in battery-powered portable electronics for precision threshold detection with rail-to-rail input common-mode range including ground.
For engineers reviewing the TS372CDT datasheet, TS372CDT pinout, TS372CDT application, or TS372CDT equivalent, key selection considerations include ultra-low input bias current (1 pA), TTL/MOS/CMOS-compatible push-pull output, input offset voltage ≤12 mV, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The TS372CDT integrates two independent comparators fabricated using ST's silicon-gate LinCMOS process, enabling high input impedance (10¹² Ω typ) and minimal power consumption across wide supply ranges. Its differential input stage supports input common-mode voltages down to ground, and its open-drain–compatible output stage delivers 150 mV typical low-level saturation voltage at 4 mA sink current.
Designed for stable operation under varying temperature (0°C to +70°C), it maintains specified performance with input offset voltage ≤12 mV and input offset current ≤200 pA over full operating range. The device avoids internal latch-up and supports fast decision-making with 200 ns propagation delay for TTL-level transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V single supply; enables direct use with Li-ion, 5 V, and 12 V rails without regulation. |
| Supply Current per Comparator | 150 µA typ (375 µA max); allows multi-comparator designs in energy-harvesting or coin-cell systems. |
| Input Bias Current | 1 pA typ; minimizes loading on high-impedance sensor nodes (e.g., photodiode, pH electrode). |
| Response Time | 200 ns typ; supports real-time overvoltage/undervoltage monitoring in DC-DC converters. |
| Input Offset Voltage | 12 mV max; ensures reliable detection of small analog thresholds (e.g., battery charge termination at 4.2 V ±10 mV). |
| Output Saturation Voltage | 100–700 mV at 4 mA sink; guarantees clean logic-low level compatible with 3.3 V and 5 V digital interfaces. |
| Input Common-Mode Range | Includes GND to VCC−2 V; permits direct sensing of signals referenced to system ground without level-shifting. |
Pinout & Package
TS372CDT is supplied in an SO-8 (Small Outline, 8-pin) plastic micropackage compliant with ECOPACK® environmental standards. Package dimensions: 4.90 mm × 6.00 mm × 1.75 mm (L × W × H), pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Comparator A) | Accepts reference or feedback signal; high-impedance node (10¹² Ω) minimizes source loading. |
| 2 | Non-inverting Input (Comparator A) | Receives sensed voltage (e.g., battery voltage); supports common-mode down to GND. |
| 3 | Output (Comparator A) | Push-pull CMOS/TTL-compatible output; sinks up to 45 mA, drives logic inputs directly. |
| 4 | VCC− / GND | Ground reference for both comparators; required return path for input and output currents. |
| 5 | Non-inverting Input (Comparator B) | Independent threshold input; electrically isolated from Channel A for dual-sensor monitoring. |
| 6 | Inverting Input (Comparator B) | Reference input for second channel; supports differential or single-ended configuration. |
| 7 | Output (Comparator B) | Separate logic-level output; enables concurrent status reporting (e.g., OK/FAULT flags). |
| 8 | VCC+ | Positive supply rail; powers both comparators; tolerant to 18 V absolute max rating. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 1 pA typical enables accurate measurement from megaohm-range sensors without calibration drift. |
| Single-supply operation with GND-referenced input | Input common-mode includes 0 V, eliminating need for negative rail or level-shifters in battery systems. |
| Fast 200 ns response at TTL levels | Supports dynamic voltage monitoring in switching regulators and protection circuits with minimal latency. |
| Low 150 mV output saturation voltage | Ensures robust logic-low assertion even under 4 mA load, improving noise margin in mixed-signal boards. |
| SO-8 ECOPACK® packaging | RoHS-compliant, surface-mountable footprint reduces board area vs. DIP8 while maintaining thermal reliability. |
Applications
| Battery Voltage Monitor | Portable Medical Sensor Interface |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging cycles in handheld diagnostic devices. IC Role / Device Role / Timing Role: Dual comparator provides independent overvoltage (4.25 V) and undervoltage (3.0 V) trip points with hysteresis. Use Value: 1 pA input bias prevents discharge of high-impedance voltage dividers, preserving battery life over thousands of cycles. | Use Scenario: Conditioning output from disposable electrochemical biosensors with output impedances >10 MΩ. IC Role / Device Role / Timing Role: Compares sensor signal against calibrated reference to trigger alarm when analyte concentration exceeds threshold. Use Value: Input offset voltage ≤12 mV ensures detection accuracy within ±2% of full-scale, meeting ISO 13485 signal integrity requirements. |
| Industrial Power Sequencing Controller | Smart Energy Meter Threshold Detection |
Use Scenario: Verifying correct ramp-up order of 3.3 V, 5 V, and 12 V rails before enabling FPGA configuration. IC Role / Device Role / Timing Role: Each comparator monitors one rail; outputs feed AND gate to generate global "POWER_OK" signal. Use Value: 200 ns response time ensures sequencing validation completes within 500 ns, preventing FPGA configuration errors due to premature enable. | Use Scenario: Detecting zero-crossing and overcurrent events in single-phase kWh meters using shunt-based current sensing. IC Role / Device Role / Timing Role: One comparator detects AC zero-crossing; the other triggers fault interrupt on current exceeding 120 A RMS. Use Value: SO-8 package allows placement adjacent to isolation barrier; low supply current (0.2 mA total) reduces self-heating impact on metrology ADC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher input bias current (25 nA typ), wider offset voltage range (±2 mV min), open-collector output only. | Requires external pull-up; less suitable for high-Z sensor interfacing but lower cost in non-critical industrial controls. | Select when budget constraints outweigh precision requirements and external pull-ups are acceptable. |
| TLC372CP | Lower supply current (20 µA/comparator), but slower response (5 µs typ) and narrower supply range (3–16 V same, but no dual-supply support). | Optimized for ultra-low-power sleep modes, not real-time protection; lacks ± supply flexibility for legacy analog front-ends. | Prefer for battery lifetime-critical applications where speed <10 µs is acceptable and dual-supply operation is unnecessary. |
Compared with LM393DR and TLC372CP, TS372CDT uniquely balances sub-nA input bias, 200 ns speed, and dual-supply capability-making it optimal for precision, low-power, and flexible-rail portable instrumentation where signal integrity and layout simplicity are critical.
Availability
TS372CDT is available at Aetrix Electronics and suitable for battery-powered electronics, portable medical devices, and industrial power sequencing controllers requiring stable component supply and long-term manufacturability.
Supply support for TS372CDT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering innovative solutions across automotive, industrial, and consumer markets with emphasis on energy efficiency and reliability.
The TS372 belongs to ST's precision analog comparator product line, engineered specifically for low-power, high-input-impedance sensing in portable and battery-operated systems where minimal quiescent current and ground-sensing capability are essential.
FAQ
What is the maximum allowable differential input voltage for TS372CDT?
The absolute maximum differential input voltage is ±18 V, defined as the voltage between the non-inverting and inverting inputs. Exceeding this may cause irreversible damage. This rating holds regardless of supply voltage and is independent of common-mode voltage limits.
Can TS372CDT operate with a 3.3 V supply and interface directly with 3.3 V logic?
Yes. TS372CDT functions fully at 3.3 V supply, and its output saturates to ≤400 mV (max) at 4 mA sink, ensuring valid logic-low levels for 3.3 V CMOS inputs. High-level output reaches VCC, making it compatible with 3.3 V rail-to-rail receivers.
Is unused comparator channel termination required, and how should it be done?
Yes. An unused comparator must be biased with a differential input voltage >100 mV (e.g., tie inverting input to VCC and non-inverting to GND) to prevent oscillation. Leaving inputs floating or at near-equal potentials risks metastability and increased supply current.
Does TS372CDT have built-in ESD protection, and what is its rating?
TS372CDT includes integrated ESD protection diodes on inputs, rated for 50 mA forward current per diode. It meets HBM ESD rating of ±2 kV (per JEDEC JS-001), sufficient for standard handling in automated assembly environments without additional external protection.
TS372CDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Differential
- Number of Elements:
- 2
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 3V ~ 16V, ±1.5V ~ 8V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- 1pA
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 375µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TS372CDT FAQ
1.How can I place an order for TS372CDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS372CDT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TS372CDT reliable?
The price and inventory of TS372CDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS372CDT is usually 5 days.
3.What payment methods are accepted for TS372CDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS372CDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS372CDT?
TS372CDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS372CDT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TS372CDT?
For technical support, including TS372CDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS372CDT requirements.
6.How does Aetrix verify that TS372CDT is sourced from the original manufacturer or authorized distributors?
All TS372CDT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TS372CDT meets industry standards.
7.What is the process for return or replacement of TS372CDT?
All TS372CDT units undergo pre-shipment inspection (PSI). If there is an issue with TS372CDT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TS372CDT part is unused and in its original packaging.
Return procedure for TS372CDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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