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Texas Instruments TLC374CN
- Part No.:
- TLC374CN
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC374CN.pdf
- Description:
- IC COMPARATOR 4 DIFF 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:881
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Product details
Overview
TLC374CN 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 features open-drain n-channel outputs compatible with TTL/MOS/CMOS logic-used in precision voltage monitoring and threshold detection circuits.
For engineers reviewing the TLC374CN datasheet, TLC374CN pinout, TLC374CN application, or TLC374CN equivalent, key selection considerations include its 0°C to 70°C temperature range, 5 mV max input offset voltage at 25°C, open-drain output configuration requiring external pull-up, and pin compatibility with LM339 in PDIP-14 packaging.
Technical Context
The TLC374CN implements four independent comparators on a single LinCMOS™ die, each with ultra-high input impedance (>10¹² Ω) and rail-to-rail common-mode input range including ground. Its ESD protection circuitry achieves 1000-V HBM rating without compromising input leakage.
Each comparator output is an n-channel open-drain stage, enabling wired-AND logic and flexible level translation via external pull-up resistors. The device supports dual-supply operation as long as |VDD – VSS| remains between 2 V and 18 V, with no internal reference or hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 18 V - enables direct interface with 3.3 V, 5 V, and 12 V systems without level shifters |
| Input Bias Current | 5 pA typ - preserves signal integrity when sensing from high-impedance sources like photodiodes or thermistors |
| Response Time | 200 ns typ (TTL-level step) - supports fast edge detection in motor control commutation or overvoltage latch circuits |
| Input Offset Voltage | 5 mV max at 25°C - defines minimum detectable voltage difference in precision window comparators |
| Output Configuration | Open-drain n-channel - requires external pull-up; allows mixed-voltage logic interfacing and wired-AND bus implementation |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade industrial control panels and consumer electronics |
| ESD Rating | 1000 V HBM - meets standard handling requirements for automated assembly without special ESD protocols |
Pinout & Package
Package: Plastic Dual In-line Package (PDIP-14), 14-pin through-hole, RoHS-compliant NIPDAU lead finish, no moisture sensitivity level (MSL) rating required.
| 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 sensor signal |
| 3 | 2IN– | Inverting input of comparator 2 - electrically isolated from other channels |
| 4 | 2IN+ | Non-inverting input of comparator 2 - supports independent dual-threshold detection |
| 5 | 3IN– | Inverting input of comparator 3 - shares no internal connection with pins 12 or 13 |
| 6 | 3IN+ | Non-inverting input of comparator 3 - usable for multi-zone voltage monitoring |
| 7 | 4IN– | Inverting input of comparator 4 - fully independent; no crosstalk with other inputs |
| 8 | 4IN+ | Non-inverting input of comparator 4 - enables quad-channel window or sequence detection |
| 9 | GND | Ground reference for all comparators and supply return path |
| 10 | 4OUT | Open-drain output of comparator 4 - sinks current when active; requires external pull-up |
| 11 | 3OUT | Open-drain output of comparator 3 - compatible with 5 V or 3.3 V logic pull-ups |
| 12 | VDD | Positive supply rail - powers all four comparators; no internal regulation |
| 13 | 2OUT | Open-drain output of comparator 2 - supports wired-AND with other open-drain outputs |
| 14 | 1OUT | Open-drain output of comparator 1 - default low-state until input condition is met |
Key Features
| Feature | Design Value |
|---|---|
| LinCMOS™ process technology | Enables >10¹² Ω input impedance and 5 pA input bias current - critical for high-Z sensor interfaces |
| Single/dual-supply flexibility | Operates with VDD = 2–18 V or |VDD − VSS| = 2–18 V - eliminates need for dedicated negative rails |
| Wide common-mode input range | Includes ground (0 V) up to VDD−1.5 V - supports direct sensing of signals referenced to system ground |
| Pin-compatible with LM339 | Direct drop-in replacement in existing PDIP-14 layouts - no PCB revision required for upgrade |
| Ultrastable input offset | 0.23 µV/month drift - ensures long-term accuracy in battery-powered or uncalibrated systems |
Applications
| Power Supply Monitoring | Motor Control Feedback |
|---|---|
|
Use Scenario: Detecting undervoltage lockout (UVLO) and overvoltage conditions in DC-DC converters and AC adapters. IC Role / Device Role / Timing Role: Quad comparator monitors multiple rails (e.g., +5 V, +3.3 V, +12 V, –5 V) simultaneously using resistor-divider thresholds. Use Value: Enables fail-safe shutdown before downstream logic corruption occurs, leveraging open-drain outputs for OR'ed fault signaling. |
Use Scenario: Commutation timing and hall-effect sensor signal conditioning in BLDC motor drives. IC Role / Device Role / Timing Role: Converts analog hall sensor outputs into clean digital edges for microcontroller input capture or gate driver enable signals. Use Value: 200 ns propagation delay ensures precise rotor position sampling at speeds up to 30,000 RPM without timing jitter. |
| Industrial Sensor Interface | Threshold-Based Alarm Systems |
|
Use Scenario: Interfacing thermistors, RTDs, and strain gauges in PLC analog input modules. IC Role / Device Role / Timing Role: Compares conditioned sensor outputs against programmable reference voltages to generate discrete alarm flags. Use Value: 5 pA input bias current prevents loading of high-impedance bridge sensors, preserving measurement linearity. |
Use Scenario: Multi-zone intrusion detection using PIR motion sensors and door/window contact switches. IC Role / Device Role / Timing Role: Four independent comparators implement AND/OR logic for zone enable/disable and alarm latching. Use Value: Open-drain outputs allow wired-AND of all zones onto a single interrupt line to the host MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadruple comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339N | Higher input bias current (25 nA typ), slower response (1.3 µs typ), bipolar process - lower cost but less precision | Not suitable for high-impedance sensor nodes or sub-microsecond timing; acceptable for basic logic-level detection | Select LM339N only when cost is primary constraint and 5 pA bias or 200 ns speed are not required. |
| TLC374CPW | Same electrical specs, TSSOP-14 package - 5 mm × 4.4 mm footprint, surface-mount, MSL Level-1 | Requires PCB redesign for SMT assembly; unsuitable for through-hole prototyping or legacy DIP sockets | Choose TLC374CPW for space-constrained production boards where automated placement and reflow are available. |
Compared with LM339N and TLC374CPW, the TLC374CN uniquely combines commercial-grade temperature range, PDIP-14 through-hole compatibility, ultra-low input bias, and sub-µs response - making it optimal for lab prototypes, industrial control panels, and mixed-technology assemblies where reliability and ease of integration outweigh package miniaturization.
Availability
TLC374CN is available at Aetrix Electronics and suitable for power supply monitoring, motor control feedback, industrial sensor interface, and threshold-based alarm systems requiring stable component supply across commercial temperature ranges.
Supply support for TLC374CN 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 linear ICs and industrial-grade components.
The TLC374CN belongs to TI's LinCMOS™ comparator product line, engineered for high-input-impedance, low-power, and wide-supply applications in industrial automation, power management, and sensor signal conditioning.
FAQ
What is the maximum supply voltage for the TLC374CN?
The TLC374CN supports an absolute maximum supply voltage of 18 V. Its recommended operating range is 3 V to 16 V per the datasheet. Operation at 18 V is permissible only under transient conditions and must remain within absolute maximum ratings to avoid permanent damage. For continuous operation, staying within 3–16 V ensures parametric compliance and long-term reliability of the TLC374CN.
Does the TLC374CN have internal hysteresis?
No, the TLC374CN does not include internal hysteresis. Each comparator operates with zero built-in hysteresis, meaning input noise near the threshold can cause output oscillation. External hysteresis must be added via positive feedback (e.g., resistor from output to non-inverting input) when used in noisy environments. This design choice preserves flexibility for both precision thresholding and externally controlled hysteresis levels in the TLC374CN.
Can the TLC374CN outputs drive LEDs directly?
Yes, the TLC374CN open-drain outputs can sink up to 20 mA continuously, sufficient to drive standard indicator LEDs with appropriate series current-limiting resistors. For example, with VDD = 5 V and a red LED (VF ≈ 1.8 V), a 220 Ω resistor limits current to ~14.5 mA - well within the 20 mA absolute maximum rating. Always verify VOL < 0.4 V at the target IOL to ensure reliable low-state signaling in the TLC374CN.
Is the TLC374CN pin-compatible with the LM339?
Yes, the TLC374CN is fully pin-compatible with the LM339 in the PDIP-14 package. Pin assignments for inputs, outputs, VDD, and GND match exactly, enabling direct replacement without layout changes. However, note that the TLC374CN uses LinCMOS™ technology (lower power, higher input impedance), while the LM339 is bipolar - so performance differs in bias current, supply current, and speed, though physical fit is identical for the TLC374CN.
What is the input common-mode voltage range of the TLC374CN?
The TLC374CN supports a common-mode input voltage range from 0 V (ground) to VDD − 1.5 V across its full operating temperature range (0°C to 70°C). At VDD = 5 V, this spans 0 V to 3.5 V; at VDD = 15 V, it extends to 0 V to 13.5 V. This rail-to-ground capability allows direct interfacing with sensors and signals referenced to system ground - a key functional advantage confirmed in the TLC374CN datasheet.
TLC374CN 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 14-PDIP
TLC374CN FAQ
1.How can I place an order for TLC374CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC374CN 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 TLC374CN reliable?
The price and inventory of TLC374CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC374CN is usually 5 days.
3.What payment methods are accepted for TLC374CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC374CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC374CN?
TLC374CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC374CN 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 TLC374CN?
For technical support, including TLC374CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC374CN requirements.
6.How does Aetrix verify that TLC374CN is sourced from the original manufacturer or authorized distributors?
All TLC374CN 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 TLC374CN meets industry standards.
7.What is the process for return or replacement of TLC374CN?
All TLC374CN units undergo pre-shipment inspection (PSI). If there is an issue with TLC374CN, 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 TLC374CN part is unused and in its original packaging.
Return procedure for TLC374CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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