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STMicroelectronics TS374CN
- Part No.:
- TS374CN
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TS374CN.pdf
- Description:
- IC COMPARATOR 4 DIFF 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,814
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Product details
Overview
TS374CN from STMicroelectronics is a quad CMOS voltage comparator in 14-pin DIP package, operating from single supply (3–16 V) or dual supplies (±1.5 V to ±8 V), with 0.1 mA supply current per comparator, 1 pA typical input bias current, and 200 ns typical response time. It is used in precision threshold detection circuits for battery-powered instrumentation and low-power sensor interfaces.
For engineers reviewing the TS374CN datasheet, TS374CN pinout, TS374CN application, or TS374CN equivalent, key selection criteria include ultra-low input bias current (1 pA typ), rail-to-rail input common-mode range including ground, TTL/MOS/CMOS-compatible output drive, and guaranteed operation across 0°C to +70°C industrial temperature range.
Technical Context
The TS374CN integrates four independent comparators fabricated using ST's silicon-gate LinMOS process, enabling high input impedance (10¹² Ω typ) and low power consumption without sacrificing speed. Each comparator features input offset voltage ≤12 mV and input offset current ≤200 pA over temperature.
It supports single-supply operation down to 3 V with input common-mode range extending to ground and output saturation voltage as low as 150 mV at 4 mA sink current - enabling direct interfacing with logic families without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V single or ±1.5 V to ±8 V dual - supports wide-range battery and rail-constrained systems |
| Input Bias Current | 1 pA typ - enables high-impedance sensor signal conditioning without loading |
| Response Time | 200 ns typ (TTL-level step) - suitable for medium-speed digital event detection |
| Input Offset Voltage | 12 mV max - defines minimum detectable differential voltage under worst-case conditions |
| Output Saturation Voltage | 150 mV typ at 4 mA - ensures reliable low-state logic recognition with TTL/CMOS loads |
| Common-Mode Input Range | 0 V to VCC+ − 2.5 V - includes ground reference for single-supply level-sensing applications |
| Supply Current per Comparator | 250 µA max - enables quad-channel comparison in sub-1 mA total system budget |
Pinout & Package
TS374CN is housed in a 14-pin plastic DIP (Dual In-line Package) with 2.54 mm lead pitch, compliant with JEDEC MS-001. Pin 1 is bottom-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input, Comp 1 | Accepts reference or signal for first comparator's negative input node |
| 2 | Non-inverting Input, Comp 1 | Accepts sensed signal for first comparator's positive input node |
| 3 | Output, Comp 1 | Open-drain compatible TTL/MOS/CMOS output; sinks up to 45 mA |
| 4 | VCC− (GND) | Ground reference for single-supply operation or negative rail for dual supply |
| 5 | Inverting Input, Comp 2 | Second comparator's negative input terminal |
| 6 | Non-inverting Input, Comp 2 | Second comparator's positive input terminal |
| 7 | Output, Comp 2 | Active-low open-drain output with 150 mV saturation at 4 mA load |
| 8 | VCC+ | Positive supply rail; supports 3–16 V operation |
| 9 | Inverting Input, Comp 3 | Third comparator's negative input terminal |
| 10 | Non-inverting Input, Comp 3 | Third comparator's positive input terminal |
| 11 | Output, Comp 3 | Third comparator output with same drive capability as pins 3 and 7 |
| 12 | Inverting Input, Comp 4 | Fourth comparator's negative input terminal |
| 13 | Non-inverting Input, Comp 4 | Fourth comparator's positive input terminal |
| 14 | Output, Comp 4 | Fourth comparator output; fully independent and electrically isolated |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 1 pA typical - preserves accuracy in high-Z source networks (e.g., photodiode, pH electrode) |
| Rail-to-rail input common-mode range | Includes ground and extends to VCC+ − 2.5 V - eliminates need for input biasing in single-supply designs |
| Low quiescent current | 0.1 mA per comparator - enables always-on monitoring in energy-constrained devices |
| TTL/MOS/CMOS-compatible output | 150 mV low-level saturation at 4 mA - directly drives standard logic families without pull-up resistors |
| Fast propagation delay | 200 ns typical response to TTL-level transitions - supports kHz-range event detection |
Applications
| Battery Voltage Monitor | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Detecting when Li-ion cell voltage drops below 3.0 V during discharge. IC Role / Device Role / Timing Role: Quad comparator compares cell voltage against four precision references to trigger staged alerts. Use Value: 1 pA input bias prevents loading of high-resistance voltage divider, preserving measurement accuracy. | Use Scenario: Shutting down power path when input bus exceeds 15 V in industrial DC supply. IC Role / Device Role / Timing Role: One comparator channel acts as fast overvoltage trip with <200 ns latency. Use Value: 200 ns response ensures protection activates before downstream components sustain damage. |
| Thermal Threshold Detector | Zero-Crossing Detector for AC Sensing |
Use Scenario: Monitoring NTC thermistor voltage in HVAC control to activate fan at 60°C. IC Role / Device Role / Timing Role: Comparator compares thermistor divider output against fixed reference to generate on/off control signal. Use Value: Input common-mode range including ground allows direct connection to grounded thermistor network. | Use Scenario: Converting 50/60 Hz AC line signal into clean square wave for microcontroller zero-crossing timing. IC Role / Device Role / Timing Role: Comparator converts sinusoidal input into synchronized digital edge with minimal jitter. Use Value: Low input offset voltage (≤12 mV) minimizes phase error in timing-critical zero-crossing detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339N | Bipolar input stage; 250 nA input bias current (vs. 1 pA); higher supply current (0.8 mA/comparator) | Less suitable for ultra-high-impedance sources; better noise immunity in noisy environments | Select LM339N where cost and legacy design compatibility outweigh ultra-low bias requirements |
| TLV3704CDR | CMOS input; 1 pA bias current; rail-to-rail output; lower supply voltage (up to 16 V) but only SOIC-14 package | No DIP option; requires PCB redesign; superior output swing near rails | Choose TLV3704CDR for new designs prioritizing modern packaging and rail-to-rail output performance |
Compared with LM339N and TLV3704CDR, TS374CN uniquely combines DIP-14 availability, guaranteed 0°C to +70°C operation, and 1 pA input bias in a legacy-compatible footprint - making it optimal for service replacements and low-volume industrial upgrades.
Availability
TS374CN is available at Aetrix Electronics and suitable for battery management systems, industrial overvoltage monitors, thermal safety controllers, and AC zero-crossing detectors requiring stable component supply across extended product lifecycles.
Supply support for TS374CN 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
The TS374 series belongs to ST's precision analog comparator product line, engineered specifically for low-power, high-input-impedance sensing applications where signal integrity and supply efficiency are critical.
FAQ
Can TS374CN operate from a single 3.3 V supply?
Yes. TS374CN is specified for single-supply operation from 3 V to 16 V. At 3.3 V, its input common-mode range spans 0 V to 0.8 V, and output low saturation remains ≤400 mV at 4 mA load - sufficient for driving 3.3 V logic with appropriate pull-up configuration.
Does TS374CN have internal hysteresis?
No. TS374CN has no built-in hysteresis. External positive feedback must be added to implement Schmitt-trigger behavior. The device's low input bias current (1 pA typ) simplifies external hysteresis resistor selection without significant error contribution.
What is the maximum capacitive load the TS374CN output can drive?
TS374CN output is stable with up to 50 pF capacitive load when driving into a 5.1 kΩ pull-up to VCC+. For larger loads (>15 pF), propagation delay increases - e.g., 15 pF adds ~30 ns to the 200 ns baseline response time per the datasheet's CL = 15 pF test condition.
Is TS374CN pin-compatible with LM339?
No. TS374CN uses a different pinout: LM339 places all four outputs on pins 1, 2, 13, and 14, while TS374CN places outputs on pins 3, 7, 11, and 14. Direct replacement requires PCB layout modification and signal re-routing.
TS374CN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Differential
- Number of Elements:
- 4
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 3V ~ 16V, ±1.5V ~ 8V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 250µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 14-DIP
TS374CN FAQ
1.How can I place an order for TS374CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS374CN 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 TS374CN reliable?
The price and inventory of TS374CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS374CN is usually 5 days.
3.What payment methods are accepted for TS374CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS374CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS374CN?
TS374CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS374CN 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 TS374CN?
For technical support, including TS374CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS374CN requirements.
6.How does Aetrix verify that TS374CN is sourced from the original manufacturer or authorized distributors?
All TS374CN 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 TS374CN meets industry standards.
7.What is the process for return or replacement of TS374CN?
All TS374CN units undergo pre-shipment inspection (PSI). If there is an issue with TS374CN, 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 TS374CN part is unused and in its original packaging.
Return procedure for TS374CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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