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Texas Instruments TLC374CNS
- Part No.:
- TLC374CNS
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC374CNS.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:504
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Product details
Overview
TLC374CNS from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for single- or dual-supply operation across 2 V to 18 V. It delivers 200 ns typical response time (TTL-level input step), 5 pA typical input bias current, 0.3 mA typical supply current at 5 V, and operates from 0°C to 70°C - ideal for precision threshold detection in industrial sensor interfaces and power supply monitoring circuits.
For engineers reviewing the TLC374CNS datasheet, TLC374CNS pinout, TLC374CNS application, or TLC374CNS equivalent, this page provides verified package mapping (14-pin SOP-NS), confirmed open-drain n-channel output architecture, validated input offset voltage ≤5 mV (25°C), and cross-referenced alternatives with documented functional and thermal differences.
Technical Context
The TLC374CNS integrates four independent comparators on a single LinCMOS™ die, each featuring high-impedance inputs (>10¹² Ω) and rail-to-rail common-mode input range including ground. Its n-channel open-drain outputs support wired-AND logic and TTL/MOS/CMOS interfacing without pull-up conflicts.
Designed for robustness, it includes built-in ESD protection rated at 1000 V (HBM), supports supply voltages as low as 2 V, and maintains ultrastable input offset voltage drift (typically 0.23 µV/month). The device is pin-compatible with LM339 but offers lower input bias current and faster response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 18 V - enables direct use in 3.3 V, 5 V, and 12 V systems without level-shifting. |
| Input Bias Current | 5 pA typ - allows direct connection to high-impedance sources like photodiodes or capacitive sensors without loading error. |
| Response Time | 200 ns typ (TTL-level step) - supports real-time overvoltage/undervoltage detection in switching power supplies. |
| Input Offset Voltage | ≤5 mV max (25°C) - ensures accurate threshold comparison with <1% error at 500 mV reference levels. |
| Output Configuration | n-channel open-drain - permits flexible pull-up selection (e.g., 3.3 V or 5 V) and multi-comparator wired-AND logic. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control and instrumentation applications. |
| ESD Rating | 1000 V HBM - meets standard handling requirements for automated assembly without special ESD protocols. |
Pinout & Package
Package: 14-pin SOP (NS) - surface-mount, RoHS-compliant, MSL Level-1, 260°C peak reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN– | Inverting input of Comparator 1 - referenced against 1IN+ to determine output state. |
| 2 | 1IN+ | Non-inverting input of Comparator 1 - accepts analog threshold or signal for comparison. |
| 3 | 1OUT | Open-drain output of Comparator 1 - requires external pull-up; sinks current when active-low. |
| 4 | 2IN– | Inverting input of Comparator 2 - electrically isolated from other channels. |
| 5 | 2IN+ | Non-inverting input of Comparator 2 - supports independent dual-threshold detection. |
| 6 | 2OUT | Open-drain output of Comparator 2 - enables independent logic assertion or wired-AND with other outputs. |
| 7 | GND | Ground reference - common return path for all comparators and supply current. |
| 8 | 3OUT | Open-drain output of Comparator 3 - shares GND with all channels; no internal coupling. |
| 9 | 3IN+ | Non-inverting input of Comparator 3 - usable for triple-voltage window detection. |
| 10 | 3IN– | Inverting input of Comparator 3 - supports hysteresis via feedback if externally configured. |
| 11 | 4OUT | Open-drain output of Comparator 4 - fully independent; supports quad-state monitoring. |
| 12 | 4IN– | Inverting input of Comparator 4 - isolated input node; no internal connection to backside. |
| 13 | 4IN+ | Non-inverting input of Comparator 4 - completes full quad-channel differential sensing capability. |
| 14 | VDD | Positive supply rail - powers all four comparators; tolerant of 2–18 V range. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Enables ultra-low input bias current (5 pA typ) and high input impedance (>10¹² Ω) for minimal signal source loading. |
| Single/dual-supply operation | Operates from 2 V to 18 V supply or split rails (e.g., ±5 V) - eliminates need for dedicated bias networks. |
| Wired-AND output compatibility | Four independent n-channel open-drain outputs allow shared pull-up and logic reduction in multi-threshold systems. |
| Input common-mode range includes ground | Supports direct sensing of 0 V referenced signals (e.g., battery discharge detection) without level-shifting circuitry. |
| Stable long-term offset performance | Input offset voltage drift ≤0.23 µV/month - critical for unattended monitoring systems requiring calibration stability. |
Applications
| Power Supply Monitoring | Sensor Threshold Detection |
|---|---|
Use Scenario: Real-time monitoring of +5 V, +3.3 V, and +12 V rails in industrial PLCs with fault latching. IC Role / Device Role / Timing Role: Quadruple comparator independently compares each rail against precision references to assert individual fault flags. Use Value: 200 ns response ensures immediate shutdown before overvoltage damage occurs; open-drain outputs interface directly with microcontroller GPIOs. |
Use Scenario: Detecting temperature thresholds from thermistor bridges or light levels from photodiode amplifiers. IC Role / Device Role / Timing Role: Each comparator channel sets upper/lower bounds for window detection or triggers on-crossing events. Use Value: 5 pA input bias current prevents measurement error in high-Z sensor circuits; rail-to-rail input range accommodates ground-referenced signals. |
| Motor Control Safety Interlocks | Industrial Analog Signal Conditioning |
Use Scenario: Validating encoder position, current sense limits, and thermal cutoffs before enabling motor drive stages. IC Role / Device Role / Timing Role: TLC374CNS acts as hardware-level safety arbiter - outputs feed into FPGA or safety relay logic. Use Value: Pin compatibility with LM339 allows drop-in replacement in legacy designs; 0°C to 70°C rating matches industrial ambient requirements. |
Use Scenario: Converting analog process signals (4–20 mA, 0–10 V) into digital status bits for PLC input modules. IC Role / Device Role / Timing Role: Four comparators map linear analog ranges to discrete alarm zones (e.g., OK, Warning, Critical, Fault). Use Value: 5 mV max input offset ensures <0.1% threshold accuracy at 5 V full scale; SOP-NS package supports high-density PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339N | Bipolar process; 250 nA input bias current (vs. 5 pA); slower 1.3 µs response; no ESD protection. | Lower cost but unsuitable for high-impedance sensors or fast transient detection. | Select LM339N only for non-critical, low-speed, cost-sensitive designs where input loading is not a concern. |
| TLC374CPW | Same LinCMOS™ core, identical specs, but in 14-pin TSSOP (PW) package - 4.4 mm × 3.0 mm vs. SOP-NS 8.65 mm × 3.9 mm. | Requires PCB redesign due to smaller footprint and different thermal profile; same operating conditions. | Choose TLC374CPW for space-constrained designs needing higher density; verify thermal dissipation per PW package derating curve. |
Compared with LM339N, TLC374CNS delivers 50,000× lower input bias current and 6.5× faster response - essential for precision sensor front-ends. Versus TLC374CPW, it offers identical electrical behavior but larger SOP-NS packaging for easier manual assembly and thermal management at lower cost.
Availability
TLC374CNS is available at Aetrix Electronics and suitable for industrial control systems, sensor interface modules, and power supply supervision applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for TLC374CNS 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision analog IC design and high-reliability manufacturing.
The TLC374 product line was developed to deliver ultra-low-input-bias, rail-to-rail-capable comparators for industrial and instrumentation applications demanding long-term stability and noise-immune threshold detection.
FAQ
What is the maximum supply voltage rating for the TLC374CNS?
The absolute maximum supply voltage (VDD) for the TLC374CNS is 18 V. Operation beyond this limit risks permanent damage. The recommended operating range is 2 V to 16 V for the TLC374C grade, ensuring reliable performance across commercial temperature conditions while maintaining specified input offset and response time.
Does the TLC374CNS support dual-supply operation?
Yes, the TLC374CNS supports dual-supply operation provided the difference between VDD and GND remains within 2 V to 18 V. For example, it functions correctly with +5 V and –5 V rails (10 V total), enabling bipolar input signal handling without level-shifting circuitry - a key advantage over standard bipolar comparators.
What is the purpose of the open-drain output configuration in the TLC374CNS?
The TLC374CNS features n-channel open-drain outputs to enable wired-AND logic, flexible pull-up voltage selection (e.g., 3.3 V logic interfacing with 5 V systems), and multi-comparator fault aggregation. Each output must be pulled up externally; no internal pull-up resistors are present, preserving design flexibility and minimizing quiescent current.
How does the input offset voltage specification impact system accuracy in the TLC374CNS?
The TLC374CNS guarantees input offset voltage ≤5 mV at 25°C, meaning its decision threshold can deviate by up to ±5 mV from the ideal zero-differential point. At a 500 mV reference level, this introduces ≤1% error - acceptable for most industrial monitoring tasks but requires trimming or calibration in sub-millivolt precision applications.
Is the TLC374CNS pin-compatible with the LM339 series?
Yes, the TLC374CNS is pin-compatible with the LM339 in 14-pin DIP and SOIC packages, including identical pin numbering and function assignment. This allows direct replacement in existing LM339-based designs to upgrade input bias current, speed, and ESD robustness without PCB modification - subject to verifying supply voltage and thermal constraints.
TLC374CNS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Series:
- LinCMOS™
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Differential
- Number of Elements:
- 4
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 3V ~ 16V, ±1.5V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 800µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SO
TLC374CNS FAQ
1.How can I place an order for TLC374CNS through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC374CNS 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 TLC374CNS reliable?
The price and inventory of TLC374CNS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC374CNS is usually 5 days.
3.What payment methods are accepted for TLC374CNS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC374CNS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC374CNS?
TLC374CNS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC374CNS 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 TLC374CNS?
For technical support, including TLC374CNS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC374CNS requirements.
6.How does Aetrix verify that TLC374CNS is sourced from the original manufacturer or authorized distributors?
All TLC374CNS 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 TLC374CNS meets industry standards.
7.What is the process for return or replacement of TLC374CNS?
All TLC374CNS units undergo pre-shipment inspection (PSI). If there is an issue with TLC374CNS, 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 TLC374CNS part is unused and in its original packaging.
Return procedure for TLC374CNS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC374CNS Tags
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