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Texas Instruments TLC372QDRG4
- Part No.:
- TLC372QDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC372QDRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,619
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Product details
Overview
TLC372QDRG4 from Texas Instruments is a dual CMOS voltage comparator with open-drain outputs, designed for precision threshold detection in single- or dual-supply systems. It delivers 200 ns typical response time at 5V, 150 µA supply current per comparator, and ultra-low 5 pA input bias current - enabling direct interfacing with high-impedance sensors in battery-powered industrial monitoring systems.
For engineers reviewing the TLC372QDRG4 datasheet, TLC372QDRG4 pinout, TLC372QDRG4 application, or TLC372QDRG4 equivalent, key selection considerations include its −40°C to 125°C operating range, rail-to-rail common-mode input (down to ground), 5 mV max input offset voltage, and TTL/MOS/CMOS-compatible open-drain output stage requiring external pull-up.
Technical Context
The TLC372QDRG4 integrates two independent CMOS differential-pair comparators on a single die, each featuring high-gain input stages with >10¹² Ω input impedance and ESD-hardened I/O (1000 V HBM). Its open-drain outputs sink up to 16 mA and support logic-level translation across 0–16 V pull-up voltages, independent of VDD.
It operates from 3 V to 16 V supply, supports common-mode input down to ground, and maintains stable performance over full military-grade temperature range (−40°C to 125°C), with no phase inversion within specified input limits and built-in hysteresis design support via external feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V - enables operation from Li-ion battery (3.3 V) up to industrial 12 V rails without level-shifting. |
| Input Offset Voltage (max) | 5 mV at 25°C - ensures reliable switching within ±2.5 mV threshold accuracy for precision voltage window detection. |
| Response Time | 200 ns typical (TTL-level step) - supports fast edge detection in motor control commutation or overvoltage fault response. |
| Input Bias Current | 5 pA typical - allows direct connection to high-impedance sources like thermistors or photodiodes without signal loading. |
| Output Configuration | Open-drain N-channel - permits wired-AND logic, mixed-voltage interface (e.g., 3.3 V logic controlling 12 V load), and flexible pull-up selection. |
| Operating Temperature | −40°C to 125°C - qualified for under-hood automotive, industrial PLC, and power supply monitoring applications. |
| Supply Current (per comparator) | 150 µA typical at 5 V - enables always-on sensing in energy-constrained IoT nodes with multi-year battery life. |
Pinout & Package
Package: SOIC-8 (D package, RG suffix), 150 mil width, surface-mount, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - requires external pull-up resistor; sinks current when IN+ < IN−. |
| 2 | IN− A | Inverting input of Comparator A - accepts signals from V− to (VDD − 1.5 V); high-impedance node. |
| 3 | IN+ A | Non-inverting input of Comparator A - same voltage range as IN− A; used for reference or signal comparison. |
| 4 | GND | Ground reference for both comparators and internal circuitry - must be low-impedance return path. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically isolated from Channel A; supports independent thresholds. |
| 6 | IN− B | Inverting input of Comparator B - identical specs to IN− A; enables dual-threshold or window detection. |
| 7 | OUT B | Open-drain output of Comparator B - independently controllable; supports OR'ing with OUT A via shared pull-up. |
| 8 | VDD | Positive supply pin - powers both comparators; accepts 3–16 V; bypass capacitor required at pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 5 pA typical - eliminates error from leakage in high-resistance divider networks used for voltage scaling. |
| Wide common-mode input range | Includes ground (0 V) to (VDD − 1.5 V) - supports direct sensing of signals referenced to system ground without level shifters. |
| ESD protection | 1000 V HBM rated - reduces risk of field failure during handling or in noisy industrial environments. |
| Pin compatibility | Direct replacement for LM393 in SOIC-8 footprint - enables drop-in upgrade to lower power and higher precision without PCB change. |
| Single/dual-supply flexibility | Operates from 3–16 V single supply or ±1.5 V to ±8 V split supplies - simplifies power architecture in mixed-signal systems. |
Applications
| Overvoltage Protection Circuit | Temperature Threshold Monitor |
|---|---|
|
Use Scenario: Monitoring 24 V PLC power rail for exceedance beyond 30 V to trigger shutdown. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel senses upper limit, second senses lower limit. Use Value: Enables precise 5 mV offset-limited trip points and 200 ns fault response, preventing damage to downstream 24 V loads. |
Use Scenario: Detecting critical temperature rise in motor windings using NTC thermistor voltage divider. IC Role / Device Role / Timing Role: Comparator compares thermistor output against fixed reference to assert thermal alarm. Use Value: 5 pA input bias avoids measurement error in high-R thermistor networks; 150 µA quiescent current extends battery life in portable diagnostics. |
| Battery Cell Voltage Supervisor | Zero-Crossing Detector |
|
Use Scenario: Monitoring individual Li-ion cell voltage during charging to prevent overcharge (≥4.25 V). IC Role / Device Role / Timing Role: Single comparator channel compares cell voltage to precision reference; open-drain output drives charge controller enable. Use Value: Rail-to-ground input range allows direct sensing without op-amp buffer; 5 mV offset ensures ≤±2.5 mV trip uncertainty at 4.25 V. |
Use Scenario: Converting AC line voltage into clean digital zero-crossing pulses for TRIAC phase control. IC Role / Device Role / Timing Role: Comparator detects polarity reversal of transformer-coupled AC signal relative to ground. Use Value: Fast 200 ns propagation delay minimizes timing jitter; open-drain output interfaces directly to 5 V microcontroller GPIO with pull-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher 250 nA input bias current; 2 mV typical offset; no guaranteed operation above 85°C. | Limited to commercial/industrial temp range (0°C to 70°C or −40°C to 85°C); unsuitable for under-hood or extended-temp designs. | Select LM393DR only for cost-sensitive, non-extended-temperature applications where 5 pA bias and 125°C rating are unnecessary. |
| TLC372CDR | Identical electrical specs but rated for 0°C to 70°C; same SOIC-8 package and pinout. | Not qualified for automotive or harsh industrial environments requiring −40°C startup or 125°C continuous operation. | Choose TLC372CDR for consumer or lab equipment where extended temperature range is not required and BOM cost optimization is priority. |
Compared with LM393DR and TLC372CDR, the TLC372QDRG4 uniquely combines military-grade temperature range (−40°C to 125°C), ultra-low 5 pA input bias, and 5 mV max offset - making it the only option among the three qualified for high-reliability automotive and industrial control applications demanding long-term parametric stability.
Availability
TLC372QDRG4 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, and battery management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC372QDRG4 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC372QDRG4 belongs to TI's precision analog comparator family, engineered specifically for low-power, high-accuracy threshold detection in harsh-environment applications where reliability, input impedance, and temperature stability are critical.
FAQ
What is the maximum supply voltage rating for the TLC372QDRG4?
The absolute maximum supply voltage (VDD) for the TLC372QDRG4 is 18 V, though the recommended operating range is 3 V to 16 V. Exceeding 18 V risks permanent damage. Operation at 16 V is fully characterized across the −40°C to 125°C range, supporting use in 12 V automotive and industrial systems with margin.
Does the TLC372QDRG4 require external pull-up resistors on its outputs?
Yes, the TLC372QDRG4 features open-drain N-channel outputs that cannot source current. Each output (OUT A and OUT B) requires an external pull-up resistor to a defined logic-high voltage - which may differ from VDD (e.g., 3.3 V pull-up while VDD = 12 V). TI recommends 100 µA to 1 mA pull-up current for optimal rise time and VOL.
Can the TLC372QDRG4 operate with inputs referenced to ground?
Yes - the TLC372QDRG4 supports common-mode input voltages from ground (0 V) up to (VDD − 1.5 V) across its full temperature range. This allows direct connection of ground-referenced signals (e.g., sensor outputs, battery terminals) to either IN+ or IN− without level-shifting circuitry.
What is the input offset voltage specification for the TLC372QDRG4?
The TLC372QDRG4 has a maximum input offset voltage of 5 mV at 25°C, with full-range specification of 10 mV over −40°C to 125°C. This is guaranteed by TI's characterization and testing - enabling accurate threshold setting in precision window comparators and battery voltage monitors where sub-10 mV error is required.
Is the TLC372QDRG4 pin-compatible with the LM393?
Yes - the TLC372QDRG4 uses the same SOIC-8 (D) package and identical pin configuration as the LM393, including GND on Pin 4 and VDD on Pin 8. This allows direct PCB-level replacement to upgrade performance (lower bias current, wider temp range, better offset) without layout modification.
TLC372QDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Differential
- Number of Elements:
- 2
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 4V ~ 16V, ±2V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 300µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC372QDRG4 FAQ
1.How can I place an order for TLC372QDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372QDRG4 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 TLC372QDRG4 reliable?
The price and inventory of TLC372QDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372QDRG4 is usually 5 days.
3.What payment methods are accepted for TLC372QDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372QDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372QDRG4?
TLC372QDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372QDRG4 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 TLC372QDRG4?
For technical support, including TLC372QDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372QDRG4 requirements.
6.How does Aetrix verify that TLC372QDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC372QDRG4 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 TLC372QDRG4 meets industry standards.
7.What is the process for return or replacement of TLC372QDRG4?
All TLC372QDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC372QDRG4, 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 TLC372QDRG4 part is unused and in its original packaging.
Return procedure for TLC372QDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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