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Texas Instruments TLC374IN
- Part No.:
- TLC374IN
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC374IN.pdf
- Description:
- IC COMPARATOR 4 DIFF 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,560
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Product details
Overview
TLC374IN from Texas Instruments is a LinCMOS™ quadruple differential comparator IC designed for precision voltage comparison in single- or dual-supply systems. It features four independent comparators with 5 mV max input offset voltage at 25°C, 200 ns typical response time (TTL-level step), and ultralow 5 pA typical input bias current. It operates from 2 V to 18 V supply and supports industrial temperature range (–40°C to +85°C), making it suitable for motor control feedback, battery monitoring, and analog threshold detection circuits.
For engineers reviewing the TLC374IN datasheet, TLC374IN pinout, TLC374IN application, or TLC374IN equivalent, key selection criteria include its open-drain n-channel outputs compatible with TTL/MOS/CMOS logic, rail-to-rail common-mode input range including ground, and pin compatibility with LM339 in PDIP-14 packaging.
Technical Context
The TLC374IN implements four independent high-impedance (10¹² Ω typ) comparators using LinCMOS™ process technology, enabling direct interfacing with high-Z sensors and reference sources. Each channel uses an n-channel open-drain output stage, requiring external pull-up resistors to define logic-high voltage level and enabling wired-AND configurations.
It supports single-supply operation from 2 V to 18 V or dual supplies with total differential voltage within 2 V–18 V. Input common-mode range extends to ground, and internal ESD protection meets 1000-V HBM rating - critical for robustness in industrial board-level assembly and field-deployed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 18 V - enables use in both low-voltage battery-powered and higher-voltage industrial rails without level-shifting. |
| Input Offset Voltage (max) | 5 mV at 25°C - ensures accurate threshold detection across temperature for precision analog monitoring. |
| Response Time (typ) | 200 ns for TTL-level input step - supports fast edge detection in timing-critical control loops. |
| Input Bias Current (typ) | 5 pA - minimizes loading error when interfacing with high-impedance sources like photodiodes or RC filters. |
| Common-Mode Input Range | Includes ground (0 V) up to VDD–1.5 V - allows direct sensing of signals referenced to system ground. |
| Output Configuration | N-channel open-drain - permits flexible logic-level translation and wired-AND bus implementation. |
| ESD Rating (HBM) | 1000 V - provides baseline handling robustness during PCB assembly and rework. |
Pinout & Package
Package: Plastic Dual In-line Package (PDIP-14), 14-pin through-hole, RoHS-compliant NIPDAU lead finish, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Open-drain output of Comparator 1 - requires external pull-up 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 monitored analog signal for rising-edge detection. |
| 4 | 2IN– | Inverting input of Comparator 2 - used for independent second threshold evaluation. |
| 5 | 2IN+ | Non-inverting input of Comparator 2 - supports dual-signal monitoring or hysteresis configuration. |
| 6 | 2OUT | Open-drain output of Comparator 2 - electrically isolated from other outputs for independent logic control. |
| 7 | GND | Ground reference - serves as common return path for all four comparators and power supply. |
| 8 | 3OUT | Open-drain output of Comparator 3 - enables third independent decision channel in compact layout. |
| 9 | 3IN+ | Non-inverting input of Comparator 3 - expands multi-threshold capability without external ICs. |
| 10 | 3IN– | Inverting input of Comparator 3 - supports differential or single-ended sensing per channel. |
| 11 | 4IN– | Inverting input of Comparator 4 - completes quad-channel flexibility for complex state machines. |
| 12 | 4IN+ | Non-inverting input of Comparator 4 - allows simultaneous monitoring of four distinct analog conditions. |
| 13 | 4OUT | Open-drain output of Comparator 4 - provides fourth logic-level output for fault indication or sequencing. |
| 14 | VDD | Positive supply rail - powers all four comparators and internal ESD protection circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Enables ultra-low input bias current (5 pA typ) and high input impedance (>10¹² Ω), minimizing sensor loading in precision measurement. |
| Single/dual-supply operation | Operates from 2 V to 18 V supply or dual rails with 2–18 V differential - simplifies power architecture in mixed-voltage systems. |
| Wired-AND output capability | N-channel open-drain outputs allow multiple comparators to share one pull-up resistor - reduces component count in alarm-bus or priority-encoder designs. |
| Pin-compatible with LM339 | Direct drop-in replacement in existing PDIP-14 layouts - eliminates PCB redesign when upgrading from bipolar comparators. |
| Industrial temperature grade | Specified from –40°C to +85°C - ensures reliable performance in automotive under-hood, factory automation, and outdoor equipment. |
Applications
| Motor Overcurrent Protection | Battery State-of-Charge Monitoring |
|---|---|
Use Scenario: Detecting excessive current in DC motor drive circuits via shunt voltage sensing. IC Role / Device Role / Timing Role: Four independent comparators monitor phase currents and thermal thresholds simultaneously. Use Value: Enables real-time fault shutdown with <200 ns response, preventing MOSFET failure during short-circuit events. |
Use Scenario: Tracking battery cell voltage against multiple thresholds (low-charge, full-charge, overvoltage). IC Role / Device Role / Timing Role: Each comparator assigned to one voltage band; open-drain outputs drive LED indicators or MCU GPIOs. Use Value: 5 pA input bias avoids discharge error in high-impedance divider networks, preserving battery runtime accuracy. |
| Programmable Logic Threshold Detector | Industrial Sensor Signal Conditioning |
Use Scenario: Converting analog sensor outputs (e.g., pressure, temperature) into clean digital logic levels. IC Role / Device Role / Timing Role: Comparator channels configured with hysteresis resistors to reject noise on slow-moving signals. Use Value: Rail-to-rail common-mode input range (including ground) allows direct interface with unbuffered transducer outputs. |
Use Scenario: Level-shifting and window-detection for 4–20 mA loop receivers or thermocouple amplifiers. IC Role / Device Role / Timing Role: Acts as analog front-end decision element before ADC sampling or microcontroller processing. Use Value: 10¹² Ω input impedance prevents loading of precision op-amp stages, maintaining signal integrity in measurement chains. |
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; 25 µA typical supply current vs. TLC374IN's 300 µA; higher input bias current (25 nA vs. 5 pA); no ESD protection. | Lower cost but unsuitable for high-impedance sources or ESD-prone environments; slower response (~1.3 µs). | Select LM339N only for non-critical, low-speed, cost-sensitive designs where input Z < 1 MΩ. |
| TLC374CN | Same LinCMOS™ design and pinout; commercial temperature range (0°C to 70°C) vs. TLC374IN's industrial (–40°C to 85°C). | Valid for lab, consumer, or indoor embedded systems; not qualified for extended ambient or automotive under-hood use. | Choose TLC374CN for cost-sensitive commercial applications with controlled thermal environments. |
Compared with LM339N, TLC374IN delivers 5000× lower input bias current and integrated ESD protection; compared with TLC374CN, it extends operational reliability to harsher thermal conditions without layout or schematic changes.
Availability
TLC374IN is available at Aetrix Electronics and suitable for motor control systems, battery management units, programmable logic interfaces, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for TLC374IN 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 family was developed to deliver CMOS-level input performance with robust industrial reliability - targeting applications demanding low-power, high-impedance sensing and noise-immune digital decision-making in harsh environments.
FAQ
What is the maximum supply voltage for the TLC374IN?
The TLC374IN supports an absolute maximum supply voltage of 18 V. Its recommended operating range is 3 V to 16 V for optimal performance across the full industrial temperature range (–40°C to +85°C). Exceeding 18 V risks permanent damage per absolute maximum ratings.
Does the TLC374IN require external pull-up resistors on its outputs?
Yes, the TLC374IN features n-channel open-drain outputs that cannot source current. Each output (pins 1, 6, 8, 13) must be connected to a pull-up resistor tied to a logic-compatible voltage rail (e.g., 3.3 V or 5 V) to generate valid HIGH logic levels - essential for proper wired-AND or TTL/CMOS interfacing.
Is the TLC374IN pin-compatible with the LM339?
Yes, the TLC374IN in PDIP-14 package is fully pin-compatible with the LM339N. Pin assignments for inputs, outputs, VDD, and GND match exactly, enabling direct replacement in legacy designs - though designers must verify pull-up resistor values due to differing output drive characteristics.
What is the input common-mode voltage range of the TLC374IN?
The TLC374IN supports a common-mode input voltage range from 0 V (ground) up to VDD–1.5 V across its full operating temperature range. This rail-to-ground capability allows direct connection of single-ended signals referenced to system ground without level-shifting circuitry.
How does the TLC374IN handle electrostatic discharge (ESD)?
The TLC374IN integrates proprietary TI LinCMOS™ ESD protection rated at 1000 V per Human Body Model (HBM). This internal circuitry safely shunts transient energy without introducing significant leakage - preserving the device's 5 pA typical input bias current and avoiding parametric degradation during standard handling.
TLC374IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Series:
- LinCMOS™
- Packaging:
- Bulk
- 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:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 14-PDIP
TLC374IN FAQ
1.How can I place an order for TLC374IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC374IN 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 TLC374IN reliable?
The price and inventory of TLC374IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC374IN is usually 5 days.
3.What payment methods are accepted for TLC374IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC374IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC374IN?
TLC374IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC374IN 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 TLC374IN?
For technical support, including TLC374IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC374IN requirements.
6.How does Aetrix verify that TLC374IN is sourced from the original manufacturer or authorized distributors?
All TLC374IN 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 TLC374IN meets industry standards.
7.What is the process for return or replacement of TLC374IN?
All TLC374IN units undergo pre-shipment inspection (PSI). If there is an issue with TLC374IN, 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 TLC374IN part is unused and in its original packaging.
Return procedure for TLC374IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC374IN Tags
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