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Texas Instruments TLC374CNSR
- Part No.:
- TLC374CNSR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC374CNSR.pdf
- Description:
- IC COMPARATOR 4 DIFF 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,751
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Product details
Overview
TLC374CNSR from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for single- or dual-supply operation across 2 V to 18 V. It features four independent open-drain comparators with 5 pA typical input bias current, 200 ns typical response time (TTL-level step), and 10¹² Ω typical input impedance - enabling high-precision threshold detection in battery-powered sensor interfaces and industrial control logic.
For engineers reviewing the TLC374CNSR datasheet, TLC374CNSR pinout, TLC374CNSR application, or TLC374CNSR equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and two validated alternative parts - all grounded in TI's SLCS118C production data sheet and official packaging addendum.
Technical Context
The TLC374CNSR implements four independent voltage comparators using LinCMOS™ polysilicon-gate CMOS process technology, supporting rail-to-rail common-mode input range down to ground. Each comparator has n-channel open-drain output requiring external pull-up for wired-AND logic implementation.
It operates over 0°C to 70°C with 5 mV maximum input offset voltage at 25°C, 300–600 µA typical supply current (four channels), and built-in ESD protection rated at 1000 V HBM - making it suitable for noise-sensitive analog front-ends where low input current and stable DC performance are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 18 V - supports single-supply systems (e.g., 3.3 V, 5 V, 12 V) and dual supplies with ≥2 V differential. |
| Input Bias Current | 5 pA typ - enables direct interfacing with high-impedance sources like photodiodes or precision voltage dividers without loading error. |
| Response Time | 200 ns typ (TTL-level input step) - ensures fast decision-making in digital control loops and pulse-width monitoring circuits. |
| Input Offset Voltage | 5 mV max at 25°C - defines worst-case threshold error in level-shifting or window-detection applications. |
| Output Configuration | N-channel open-drain - requires external pull-up; allows wired-AND logic and mixed-voltage interface (e.g., 5 V logic driving 3.3 V MCU). |
| ESD Rating | 1000 V HBM - internal protection reduces need for external TVS diodes in board-level ESD mitigation schemes. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded systems including test equipment and consumer electronics. |
Pinout & Package
TLC374CNSR is supplied in a 14-pin SOP (Small Outline Package), also designated NS package per TI's packaging addendum. Pin numbering follows standard DIP/SOP convention with Pin 1 at top-left corner (notch or dot side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Open-drain output of Comparator 1 - must be pulled up externally to define logic HIGH level. |
| 2 | 1IN– | Inverting input of Comparator 1 - accepts reference or feedback signal for threshold comparison. |
| 3 | 1IN+ | Non-inverting input of Comparator 1 - connects to sensed signal for positive-edge detection. |
| 4 | 2IN– | Inverting input of Comparator 2 - used in dual-threshold or hysteresis configurations. |
| 5 | 2IN+ | Non-inverting input of Comparator 2 - supports independent signal conditioning per channel. |
| 6 | VDD | Positive supply rail - powers all four comparators; accepts 2–18 V DC. |
| 7 | GND | Ground reference - common return path for inputs, outputs, and supply. |
| 8 | 3IN– | Inverting input of Comparator 3 - enables three-channel monitoring (e.g., over/under/valid window). |
| 9 | 3IN+ | Non-inverting input of Comparator 3 - pairs with Pin 8 for third independent comparison. |
| 10 | 3OUT | Open-drain output of Comparator 3 - shares same electrical behavior as Pin 1. |
| 11 | 4IN– | Inverting input of Comparator 4 - completes quad-channel capability for multi-zone sensing. |
| 12 | 4IN+ | Non-inverting input of Comparator 4 - supports full four-channel independent analog decision-making. |
| 13 | 4OUT | Open-drain output of Comparator 4 - compatible with TTL, MOS, and CMOS logic families via pull-up. |
| 14 | 2OUT | Open-drain output of Comparator 2 - identical drive strength and timing to other outputs. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ Process Technology | Delivers ultra-low input bias current (5 pA typ) and high input impedance (>10¹² Ω), minimizing loading on high-Z sensors. |
| Single- or Dual-Supply Operation | Operates from 2 V to 18 V supply or split rails (e.g., ±5 V), simplifying integration into mixed-voltage systems. |
| Wired-AND Output Capability | Four n-channel open-drain outputs allow shared pull-up for logical OR/AND functions without external logic gates. |
| Pin Compatibility with LM339 | Direct drop-in replacement for LM339 in existing designs - same pinout, function, and footprint (14-pin SOIC/N/PW). |
| Stable Input Offset Drift | Typical input offset voltage change ≤0.23 µV/month - ensures long-term accuracy in calibration-critical instrumentation. |
Applications
| Industrial Threshold Detection | Power Supply Monitoring |
|---|---|
Use Scenario: Detecting overvoltage, undervoltage, or out-of-window conditions on 12 V DC rails in PLC I/O modules. IC Role / Device Role / Timing Role: Four independent comparators monitor VREF, VSENSE, and hysteresis thresholds to generate fault flags. Use Value: 5 pA input bias avoids measurement error from leakage across high-value divider resistors; open-drain outputs interface directly with 24 V PLC logic. |
Use Scenario: Supervising multiple voltage rails (3.3 V, 5 V, 12 V) in embedded computing platforms. IC Role / Device Role / Timing Role: Each comparator independently compares rail voltage against precision reference to assert reset or alert signals. Use Value: 200 ns response time ensures rapid fault response before downstream damage occurs; wide 2–18 V supply range accommodates diverse rail voltages. |
| Sensor Signal Conditioning | Legacy System Interface |
Use Scenario: Converting analog outputs from thermistors, RTDs, or photoelectric sensors into clean digital logic levels. IC Role / Device Role / Timing Role: Comparator 1–4 convert four separate sensor outputs into TTL-compatible ON/OFF signals for microcontroller GPIOs. Use Value: 10¹² Ω input impedance prevents loading of high-output-impedance sensors; rail-to-rail input range includes ground for unipolar sensor signals. |
Use Scenario: Replacing obsolete LM339 in legacy industrial controllers where PCB layout cannot be modified. IC Role / Device Role / Timing Role: Direct pin-for-pin substitute delivering identical functionality with improved input bias and ESD robustness. Use Value: Same 14-pin SOIC (NS) package and pinout as LM339; eliminates redesign cost while upgrading reliability and low-power performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher input bias current (25 nA typ), slower response (1.3 µs typ), no ESD protection circuitry. | Less suitable for high-impedance sensor interfaces or ESD-prone environments; requires external protection. | Select LM339DR only when cost is primary constraint and design already accommodates its higher input current and slower speed. |
| TLC374CDR | Identical electrical specs and pinout; differs only in tape-and-reel packaging (2500 pcs/reel vs. 50 pcs/tube for TLC374CNSR). | No functional difference - both are commercial-grade (0°C to 70°C), same SOIC-14 (NS) package. | Choose TLC374CDR for automated SMT assembly; TLC374CNSR suits prototyping or low-volume manual placement. |
Compared with LM339DR and TLC374CDR, TLC374CNSR offers superior input bias current (5 pA vs. 25 nA) and integrated ESD protection - critical for sensor front-ends - while matching TLC374CDR electrically but differing only in packaging format and reel quantity.
Availability
TLC374CNSR is available at Aetrix Electronics and suitable for industrial threshold detection, power supply monitoring, sensor signal conditioning, and legacy system interface applications requiring stable component supply and long-term sourcing continuity.
Supply support for TLC374CNSR 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 ICs and industrial-grade components.
The TLC374 series belongs to TI's LinCMOS™ comparator product line, engineered for high-input-impedance, low-power, and stable DC performance in commercial and industrial sensing and control systems.
FAQ
What is the operating temperature range of the TLC374CNSR?
The TLC374CNSR is characterized for operation from 0°C to 70°C, meeting commercial-grade specifications. This range is explicitly defined in TI's SLCS118C datasheet and confirmed in the Packaging Addendum for orderable part TLC374CNS. It is not rated for extended industrial (–40°C to 85°C) or military temperature ranges - those require TLC374I or TLC374M variants.
Does the TLC374CNSR have internal pull-up resistors on its outputs?
No, the TLC374CNSR does not include internal pull-up resistors. All four outputs (Pins 1, 14, 10, and 13) are n-channel open-drain configurations and require external pull-up resistors to VDD or another logic rail to establish HIGH-level output states. This architecture enables wired-AND logic and mixed-voltage interfacing - a key feature confirmed in the "description" and "equivalent schematic" sections of the SLCS118C datasheet.
Is the TLC374CNSR pin-compatible with the LM339?
Yes, the TLC374CNSR is pin-compatible with the LM339 in 14-pin SOIC (NS), PDIP (N), and TSSOP (PW) packages. TI explicitly states "Pin-Compatible With LM339" in the datasheet's "Features" section, and the pin assignments (1OUT, 1IN–, 1IN+, etc.) match identically. This allows direct substitution without PCB modification - verified across TI's official documentation and packaging addendum.
What is the maximum supply voltage rating for the TLC374CNSR?
The absolute maximum supply voltage (VDD) for the TLC374CNSR is 18 V, as specified in the "Absolute Maximum Ratings" table of SLCS118C. The recommended operating range is 3 V to 16 V at 25°C, but the device tolerates transient excursions up to 18 V without damage - a critical margin for brown-out resilience in industrial power systems.
Can the TLC374CNSR operate from a dual supply, such as ±5 V?
Yes, the TLC374CNSR supports dual-supply operation provided the voltage difference between VDD and GND remains within 2 V to 18 V. When using ±5 V supplies, connect VDD to +5 V and GND to –5 V - resulting in a 10 V differential, which falls within specification. The common-mode input range includes ground, allowing inputs to swing symmetrically around 0 V, as confirmed in the "Recommended Operating Conditions" table.
TLC374CNSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Series:
- LinCMOS™
- Packaging:
- Tape & Reel (TR)
- 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
- :
- 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
TLC374CNSR FAQ
1.How can I place an order for TLC374CNSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC374CNSR 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 TLC374CNSR reliable?
The price and inventory of TLC374CNSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC374CNSR is usually 5 days.
3.What payment methods are accepted for TLC374CNSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC374CNSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC374CNSR?
TLC374CNSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC374CNSR 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 TLC374CNSR?
For technical support, including TLC374CNSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC374CNSR requirements.
6.How does Aetrix verify that TLC374CNSR is sourced from the original manufacturer or authorized distributors?
All TLC374CNSR 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 TLC374CNSR meets industry standards.
7.What is the process for return or replacement of TLC374CNSR?
All TLC374CNSR units undergo pre-shipment inspection (PSI). If there is an issue with TLC374CNSR, 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 TLC374CNSR part is unused and in its original packaging.
Return procedure for TLC374CNSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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