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Texas Instruments TLC372CDRG4
- Part No.:
- TLC372CDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC372CDRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,941
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Product details
Overview
TLC372CDRG4 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 200ns typical response time at 5V, 150µA supply current per channel, and 5pA typical input bias current - enabling high-impedance sensor interfacing in battery-powered industrial monitoring and power management circuits.
For engineers reviewing the TLC372CDRG4 datasheet, TLC372CDRG4 pinout, TLC372CDRG4 application, or TLC372CDRG4 equivalent, key selection criteria include its rail-to-rail common-mode input range (including ground), TTL/MOS/CMOS-compatible open-drain outputs, ultra-low input offset voltage (1–5mV), and pin compatibility with LM393 in SOIC-8 packaging.
Technical Context
The TLC372CDRG4 integrates two independent CMOS differential comparators on a single die, each featuring high-gain input stages with >10¹²Ω input impedance and ESD-protected I/O pins rated to 1000V HBM. Its open-drain output architecture allows logic-level translation across supply domains up to 16V, independent of VDD.
It operates over 0°C to 70°C (TLC372C grade), supports 3V–16V supply rails, and maintains stable performance with input common-mode voltages from ground to VDD−1.5V. The device avoids phase inversion within its specified input range and requires no external hysteresis for noise-immune operation when overdrive exceeds 100mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 16V - enables direct use with 3.3V, 5V, and 12V systems without level-shifting. |
| Response Time | 200ns typical (100mV overdrive, 5V supply) - supports fast edge detection in motor control timing and digital signal conditioning. |
| Input Bias Current | 5pA typical - preserves accuracy when interfacing with high-impedance sources like photodiodes or precision voltage dividers. |
| Input Offset Voltage | 1–5mV max at 25°C - ensures reliable switching near reference thresholds in analog-to-digital front-ends. |
| Output Type | Open-drain n-channel - permits wired-AND logic, multi-comparator arbitration, and pull-up to voltages up to 16V. |
| Common-Mode Input Range | 0V to VDD−1.5V - supports ground-referenced inputs and single-supply operation without level-shifting circuitry. |
| ESD Rating | 1000V HBM - provides robust handling during PCB assembly and field service in industrial environments. |
Pinout & Package
Package: SOIC-8 (D package), tape-and-reel (R suffix), 3.9mm × 4.9mm body, 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - must be pulled up externally; sinks current when IN+ < IN−. |
| 2 | IN− A | Inverting input of Comparator A - accepts signals from ground to VDD−1.5V; high-impedance node. |
| 3 | IN+ A | Non-inverting input of Comparator A - same voltage range and impedance as IN− A. |
| 4 | GND | Ground reference for both comparators and internal circuitry - serves as return path for output sink current. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically isolated from Channel A; identical specs. |
| 6 | IN− B | Inverting input of Comparator B - supports independent threshold comparison with Channel A. |
| 7 | OUT B | Open-drain output of Comparator B - compatible with shared pull-up bus or independent load. |
| 8 | VDD | Positive supply pin - powers both comparators; accepts 3V–16V; bypass capacitor required at pin. |
Key Features
| Feature | Design Value |
|---|---|
| Single/dual-supply operation | Operates from 3V–16V single supply or ±1.5V to ±8V split supplies - simplifies power architecture in mixed-voltage systems. |
| Ultra-low input bias current | 5pA typical - eliminates loading error in high-Z sensor interfaces (e.g., thermistors, pH electrodes, capacitive sensors). |
| Fast propagation delay | 200ns typical at TTL-level step - enables real-time overvoltage/undervoltage detection in DC-DC converters and PLC I/O modules. |
| Rail-to-rail common-mode range | Includes ground and extends to VDD−1.5V - supports direct connection of ground-referenced signals without biasing networks. |
| ESD-protected I/O | 1000V HBM rating - reduces risk of field failure in unshielded industrial enclosures and handheld test equipment. |
| LM393 pin compatibility | SOIC-8 footprint and pin mapping match LM393 - allows drop-in upgrade to lower power, higher precision in legacy designs. |
Applications
| Power Supply Monitoring | Threshold Detection in Sensor Interfaces |
|---|---|
|
Use Scenario: Monitoring 24V PLC power rail for undervoltage (<19.2V) and overvoltage (>30V) faults using a resistor divider and 2.5V reference. IC Role / Device Role / Timing Role: Dual comparator implements window detection - one channel triggers UV alert, the other OV alert, both with open-drain outputs wired to shared fault bus. Use Value: Eliminates need for microcontroller ADC polling; provides deterministic, sub-200ns fault response with zero software overhead. |
Use Scenario: Converting analog output from a 10MΩ thermistor network into clean digital logic for HVAC temperature staging. IC Role / Device Role / Timing Role: Single comparator compares thermistor voltage against fixed reference; open-drain output drives optocoupler input directly. Use Value: 5pA input bias prevents measurement drift; rail-to-rail input range allows direct ground-referenced sensing without op-amp buffering. |
| Motor Control Feedback | Battery Management Systems |
|
Use Scenario: Detecting zero-crossing of back-EMF in BLDC motor commutation using differential winding voltage. IC Role / Device Role / Timing Role: Comparator A senses rising edge, Comparator B senses falling edge - outputs feed logic to gate driver enable timing. Use Value: 200ns response ensures precise 60° commutation timing at 20kHz electrical frequency; low supply current extends runtime in portable tools. |
Use Scenario: Cell voltage supervision in 3S Li-ion pack, triggering disconnect FET when any cell exceeds 4.25V or drops below 2.8V. IC Role / Device Role / Timing Role: Two comparators monitor high-side and low-side cell voltages referenced to pack ground; outputs drive latch circuit. Use Value: 150µA total supply current minimizes self-discharge during storage; 5mV offset ensures ±10mV trip accuracy at 4.2V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Bipolar input stage; 250nA input bias current; 2mV offset; 1.3mA supply current per channel. | Higher power consumption and input loading limit use with ultra-high-Z sources; slower 1.3µs response. | Select LM393DR only when cost is primary constraint and 5pA bias or 200ns speed are not required. |
| TLC372IDR | Same silicon, −40°C to 85°C operating range; otherwise identical electrical specs and pinout. | Required for extended-temperature industrial or automotive under-hood applications. | Choose TLC372IDR when ambient temperature exceeds 70°C; no design changes needed beyond qualification testing. |
Compared with LM393DR, TLC372CDRG4 reduces input loading by 50,000× and cuts supply current by 8×, enabling new sensor architectures; versus TLC372IDR, it trades extended temperature range for lower cost in commercial-grade applications.
Availability
TLC372CDRG4 is available at Aetrix Electronics and suitable for industrial power monitoring, battery protection circuits, and sensor interface designs requiring stable component supply across long production lifecycles.
Supply support for TLC372CDRG4 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, embedded processing, and connectivity technologies, with decades of expertise in precision analog ICs.
The TLC372CDRG4 belongs to TI's precision comparator product line, engineered for low-power, high-impedance signal conditioning in industrial automation, energy metering, and portable instrumentation.
FAQ
What is the maximum supply voltage for the TLC372CDRG4?
The TLC372CDRG4 has an absolute maximum supply voltage (VDD) of 18V, but its recommended operating range is 3V to 16V. Operation above 16V risks parametric degradation or permanent damage, even if within absolute ratings. For reliable long-term performance in 12V systems, the TLC372CDRG4 operates with margin and stability across temperature and load conditions.
Can the TLC372CDRG4 outputs drive LEDs directly?
No - the TLC372CDRG4 features open-drain outputs that can only sink current, not source it. To drive an LED, connect the anode to a positive supply (≤16V) and the cathode to an output pin; a series current-limiting resistor is mandatory. At 5V pull-up and 4mA sink, VOL remains ≤400mV, ensuring sufficient LED forward voltage margin.
Is the TLC372CDRG4 pin-compatible with the LM393?
Yes - the TLC372CDRG4 uses the same SOIC-8 (D) package and identical pin configuration as the LM393, including OUT A, IN− A, IN+ A, GND, IN+ B, IN− B, OUT B, and VDD. This allows direct replacement in existing LM393 layouts without PCB modification, delivering immediate improvements in power, speed, and input impedance.
Does the TLC372CDRG4 require external hysteresis for stable operation?
Not inherently - the TLC372CDRG4 exhibits no phase reversal and maintains stable output with ≥100mV input overdrive. However, hysteresis is recommended when input signals transition slowly near the threshold or in noisy environments. TI provides verified resistor networks for both inverting and non-inverting configurations in the official datasheet to prevent chatter.
What is the operating temperature range of the TLC372CDRG4?
The TLC372CDRG4 is the commercial-grade variant, characterized for operation from 0°C to 70°C ambient temperature. It is not rated for extended industrial (−40°C to 85°C) or military (−55°C to 125°C) ranges. For designs requiring wider thermal margins, the pin-compatible TLC372IDR or TLC372MDR should be selected instead.
TLC372CDRG4 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 (±):
- 3V ~ 16V, ±1.5V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 400µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC372CDRG4 FAQ
1.How can I place an order for TLC372CDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372CDRG4 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 TLC372CDRG4 reliable?
The price and inventory of TLC372CDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372CDRG4 is usually 5 days.
3.What payment methods are accepted for TLC372CDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372CDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372CDRG4?
TLC372CDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372CDRG4 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 TLC372CDRG4?
For technical support, including TLC372CDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372CDRG4 requirements.
6.How does Aetrix verify that TLC372CDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC372CDRG4 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 TLC372CDRG4 meets industry standards.
7.What is the process for return or replacement of TLC372CDRG4?
All TLC372CDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC372CDRG4, 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 TLC372CDRG4 part is unused and in its original packaging.
Return procedure for TLC372CDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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