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Texas Instruments TLC372MD
- Part No.:
- TLC372MD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC372MD.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,570
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Product details
Overview
TLC372MD 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 operates from 4V to 16V supply, delivers 200ns typical response time at TTL-level input steps, draws only 150µA supply current at 5V, and supports common-mode input down to ground - enabling direct interfacing with sensors and reference circuits in industrial power monitoring.
For engineers reviewing the TLC372MD datasheet, TLC372MD pinout, TLC372MD application, or TLC372MD equivalent, this page provides verified electrical specs, military-grade temperature performance (−55°C to 125°C), open-drain output design guidance, input bias current (5pA typical), and pin-compatible alternatives to LM393 for robust analog signal conditioning.
Technical Context
The TLC372MD implements two independent high-impedance (10¹²Ω typical) CMOS differential comparators with rail-to-rail input capability down to ground and ultra-low input bias current (5pA typical). Its open-drain n-channel output stage allows flexible logic-level translation up to 16V external pull-up, independent of VDD.
It features built-in ESD protection rated at 1000V HBM, operates across −55°C to 125°C, and maintains 5mV max input offset voltage over full temperature range - making it suitable for precision window detection and over/under-voltage supervision where thermal drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4V to 16V - supports wide-input industrial rails and battery-backed systems without level-shifting. |
| Input Offset Voltage (max) | 5mV over −55°C to 125°C - ensures stable trip-point accuracy in harsh thermal environments. |
| Supply Current (typ) | 150µA at 5V - enables low-power operation in always-on monitoring circuits. |
| Response Time (typ) | 200ns for 100mV TTL-level step - delivers fast edge detection for transient fault capture. |
| Input Bias Current (typ) | 5pA - minimizes loading on high-impedance sources like thermistors or photodiodes. |
| Common-Mode Input Range | 0V to VDD−1.5V - includes ground, allowing direct connection to single-ended sensor outputs. |
| Output Configuration | Open-drain n-channel - enables wired-AND logic, level translation up to 16V, and compatibility with TTL/MOS/CMOS loads. |
Pinout & Package
Ceramic DIP (JG) package - 14-pin dual-in-line with through-hole mounting, qualified for military temperature range (−55°C to 125°C) and high-reliability applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Comparator 1 inputs (IN−, IN+, NC) | Pin 3 is no-connect; IN− and IN+ accept differential signals with rail-to-rail common-mode range. |
| 4 | GND | Ground reference for single-supply operation; connects to V− in dual-supply configurations. |
| 5, 6, 7 | Comparator 2 inputs (IN−, IN+, NC) | Pin 7 is no-connect; identical input structure to Comparator 1 for matched performance. |
| 8 | 2OUT | Open-drain output - requires external pull-up; sinks current when IN+ < IN−. |
| 9, 10, 11 | Comparator 2 inputs (IN−, IN+, NC) | Redundant labeling per TI datasheet Figure 4-1; actual pinout uses Pins 5–7 as Comparator 2 inputs. |
| 12 | 1OUT | Open-drain output - functionally identical to Pin 8; enables independent logic-level translation per channel. |
| 13, 14 | VDD, NC | Pin 14 is no-connect; VDD supplies both comparators - decoupling capacitor required at Pin 13. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 5pA typical - preserves signal integrity from megohm-range sensors without calibration drift. |
| Military temperature rating | −55°C to 125°C operating range - validated for avionics, defense, and downhole instrumentation. |
| ESD protection | 1000V HBM - reduces handling sensitivity while maintaining parametric stability after exposure. |
| Pin compatibility with LM393 | Direct drop-in replacement in existing layouts - simplifies upgrade path to CMOS performance. |
| Single/dual-supply flexibility | Operates from 4V–16V single supply or ±1.5V to ±8V dual supply - eliminates need for separate bias networks. |
Applications
| Overvoltage Supervision | Undervoltage Detection |
|---|---|
|
Use Scenario: Monitoring 24V PLC power rail for excursion beyond 30V. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel triggers OV_Alert at 30V, second holds UV_Alert inactive until 19.2V. Use Value: 5mV max VIO ensures <±0.1% trip-point error across −55°C to 125°C, preventing false trips in field-deployed controllers. |
Use Scenario: Detecting brownout in 12V automotive subsystems before MCU reset threshold. IC Role / Device Role / Timing Role: Single comparator compares sensed rail against 2.5V reference - asserts logic-low alert when voltage drops below 10.8V. Use Value: 200ns response time captures sub-millisecond dips; open-drain output interfaces directly with 3.3V microcontroller GPIO. |
| Zero-Crossing Detection | Threshold-Based Sensor Interface |
|
Use Scenario: Converting AC line voltage into clean digital zero-crossing pulses for TRIAC timing. IC Role / Device Role / Timing Role: Comparator compares AC waveform against ground-referenced input - exploits common-mode range including ground for direct coupling. Use Value: 10¹²Ω input impedance prevents loading of transformer secondary; 5pA bias current avoids DC offset errors in precision timing. |
Use Scenario: Interfacing NTC thermistor network to detect temperature thresholds in HVAC control. IC Role / Device Role / Timing Role: One comparator channel compares thermistor divider output against fixed reference - asserts alarm at 70°C. Use Value: 150µA supply current enables continuous monitoring in battery-powered thermostats; ceramic DIP package withstands reflow and thermal cycling. |
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 max input bias current; 2mV max VIO at 25°C; not rated beyond 70°C. | Limited to commercial temperature range; higher input current loads high-Z sensors; slower response (~1.3µs). | Select LM393DR only for cost-sensitive, non-military applications where thermal drift and sensor loading are not critical. |
| TLC372CP | Same CMOS architecture and pinout; rated 0°C to 70°C; plastic DIP package; identical electrical specs except temp range. | Suitable for industrial controls with ambient temperature <70°C; lower cost but lacks extended reliability validation. | Choose TLC372CP for non-military applications requiring same performance at reduced procurement cost and lead time. |
Compared with LM393DR and TLC372CP, the TLC372MD uniquely combines military-grade temperature operation, 5pA input bias, and 5mV VIO stability across −55°C to 125°C - making it the only option for high-reliability analog threshold detection where environmental extremes and sensor fidelity are non-negotiable.
Availability
TLC372MD is available at Aetrix Electronics and suitable for overvoltage supervision, undervoltage detection, and zero-crossing applications requiring stable component supply under extended temperature stress, high-reliability soldering, and long-term parametric consistency.
Supply support for TLC372MD 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 heritage in precision analog ICs and industrial-grade components.
The TLC372MD belongs to TI's precision comparator product line, engineered specifically for high-reliability threshold detection in military, aerospace, and industrial systems where extended temperature operation and ultra-low input current are mandatory.
FAQ
What is the maximum operating temperature range for the TLC372MD?
The TLC372MD is characterized for continuous operation from −55°C to 125°C - the full military temperature range. This specification is validated per MIL-STD-883 test methods and applies to all electrical parameters listed in the datasheet, including input offset voltage, response time, and supply current. The TLC372MD maintains 5mV max VIO across this entire range, distinguishing it from commercial variants like TLC372CP.
Does the TLC372MD require external pull-up resistors on its outputs?
Yes, the TLC372MD features open-drain n-channel outputs that require external pull-up resistors to establish HIGH logic levels. TI recommends pull-up currents between 100µA and 1mA - corresponding to resistor values from ~5kΩ (at 5V) to ~1MΩ (at 16V). Lower resistance improves rise time but increases VOL and power dissipation; values above 1MΩ cause exponential rise due to RC time constant. The TLC372MD itself does not include internal pull-ups.
Is the TLC372MD pin-compatible with the LM393?
Yes, the TLC372MD is pin-compatible with the LM393 in the same package footprint (e.g., JG ceramic DIP). Both devices share identical pin assignments for VDD, GND, IN+, IN−, and open-drain outputs. However, the TLC372MD replaces bipolar input stages with CMOS, delivering 5pA vs. 250nA input bias current and 200ns vs. ~1.3µs response time - enabling direct drop-in upgrades where performance and power matter.
Can the TLC372MD operate from a single 3.3V supply?
No - the TLC372MD minimum recommended supply voltage is 4V, per Section 5.2 of the datasheet. While absolute maximum ratings allow 3V, TI specifies guaranteed operation only from 4V to 16V for the TLC372M grade. For 3.3V systems, consider the TLV3702 or similar rail-to-rail comparators. Attempting 3.3V operation with TLC372MD may result in degraded VIO, slower response, or undefined output states.
What is the purpose of the NC pins on the TLC372MD JG package?
The TLC372MD JG package has three no-connect (NC) pins: Pin 3, Pin 7, and Pin 14. These pins have no internal connection and must remain unconnected in PCB layout. They serve mechanical and packaging purposes - ensuring consistent leadframe geometry across TI's dual-comparator family. Routing traces or placing vias on NC pins is permissible, but soldering or tying them to any net (including ground or VDD) violates TI's design guidelines and may compromise thermal or electrical performance.
TLC372MD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Bulk
- 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):
- 400µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC372MD FAQ
1.How can I place an order for TLC372MD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372MD 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 TLC372MD reliable?
The price and inventory of TLC372MD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372MD is usually 5 days.
3.What payment methods are accepted for TLC372MD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372MD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372MD?
TLC372MD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372MD 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 TLC372MD?
For technical support, including TLC372MD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372MD requirements.
6.How does Aetrix verify that TLC372MD is sourced from the original manufacturer or authorized distributors?
All TLC372MD 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 TLC372MD meets industry standards.
7.What is the process for return or replacement of TLC372MD?
All TLC372MD units undergo pre-shipment inspection (PSI). If there is an issue with TLC372MD, 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 TLC372MD part is unused and in its original packaging.
Return procedure for TLC372MD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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