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Texas Instruments TLC372MDR
- Part No.:
- TLC372MDR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC372MDR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,591
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Product details
Overview
TLC372MDR 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-supply supervision circuits.
For engineers reviewing the TLC372MDR datasheet, TLC372MDR pinout, TLC372MDR application, or TLC372MDR equivalent, this page provides verified electrical specifications, military-grade temperature performance (−55°C to 125°C), open-drain output design guidance, and direct alternatives for legacy LM393-based designs requiring enhanced input impedance and lower quiescent current.
Technical Context
The TLC372MDR implements two independent CMOS differential-pair comparators with rail-to-rail common-mode input range (including ground) and n-channel open-drain outputs. Its architecture supports TTL/MOS/CMOS logic compatibility via external pull-up resistors and enables wired-AND logic functions across multiple comparators.
It operates from 3V to 16V single supply or ±1.5V to ±8V dual supply (|VDD−VSS| = 3–16V), with ESD protection rated at 1000V HBM. Input offset voltage is specified at ≤5mV over full military temperature range, and propagation delay remains stable across −55°C to 125°C without phase inversion in valid input ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 16V single supply; supports operation down to 3V for low-power systems without sacrificing speed or accuracy. |
| Response Time | 200ns typical (100mV input step, 5V supply); enables fast overvoltage/undervoltage fault detection in PLCs and motor drives. |
| Input Bias Current | 5pA typical at 25°C; allows direct connection to high-impedance sources like photodiodes or precision voltage dividers. |
| Input Offset Voltage | ≤5mV max over −55°C to 125°C; ensures stable trip-point accuracy across extreme environmental conditions. |
| Supply Current | 150µA typical per channel at 5V; reduces system-level power budget in always-on monitoring applications. |
| Output Type | Open-drain N-channel; permits level-shifting up to 16V and wired-AND configuration with other open-drain devices. |
| ESD Rating | 1000V HBM; built-in protection reduces need for external transient suppression in ruggedized industrial layouts. |
Pinout & Package
Package: SOIC-8 (D package), tape-and-reel format (R suffix). Pin-compatible with LM393 but with CMOS input stage and improved VIO stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A; requires external pull-up to define logic HIGH level (0–16V). |
| 2 | IN− A | Inverting input of Comparator A; accepts common-mode voltages from VSS to VDD−1.5V. |
| 3 | IN+ A | Non-inverting input of Comparator A; supports direct interface with high-Z sensors or reference networks. |
| 4 | VSS | Ground or negative supply terminal; referenced for all input and output voltage levels. |
| 5 | IN+ B | Non-inverting input of Comparator B; electrically isolated from Channel A for independent threshold sensing. |
| 6 | IN− B | Inverting input of Comparator B; supports differential or single-ended configurations with hysteresis. |
| 7 | OUT B | Open-drain output of Comparator B; may be tied to OUT A for wired-AND alarm signaling. |
| 8 | VDD | Positive supply terminal; powers both comparators and defines upper limit of common-mode input range. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 5pA typical enables use with megohm-range sensor bridges and capacitive touch interfaces without signal loading. |
| Wide supply voltage range | 3V–16V operation eliminates need for LDO pre-regulation in mixed-voltage industrial subsystems. |
| Military temperature rating | −55°C to 125°C guaranteed performance supports deployment in avionics, downhole tools, and engine control units. |
| Open-drain output flexibility | Allows logic-level translation between 3.3V MCU I/O and 12V/24V fieldbus signaling without level-shifters. |
| Built-in ESD protection | 1000V HBM rating reduces board-level TVS requirements and improves manufacturing yield in unshielded assembly lines. |
Applications
| Power Supply Supervision | Industrial Sensor Interface |
|---|---|
|
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 implementing window detection with independent high/low trip points and open-drain alert outputs. Use Value: Enables fail-safe shutdown before downstream damage occurs, with <200ns response ensuring rapid isolation during transients. |
Use Scenario: Converting analog output from a 10MΩ thermistor network into digital ON/OFF signals for HVAC zone control. IC Role / Device Role / Timing Role: High-impedance voltage comparator rejecting leakage-induced drift while maintaining sub-5mV trip accuracy. Use Value: Eliminates external op-amp buffer stages, reducing BOM count and PCB area in space-constrained embedded thermostats. |
| Motor Drive Fault Detection | Battery Management System |
|
Use Scenario: Detecting overcurrent via shunt voltage comparison and DC bus overvoltage in 48V BLDC inverter modules. IC Role / Device Role / Timing Role: Dual comparator providing simultaneous analog fault flag generation with TTL-compatible open-drain outputs. Use Value: Supports <1µs fault-to-shutdown latency when paired with fast gate drivers, meeting IEC 61800-5-1 functional safety timing constraints. |
Use Scenario: Cell voltage monitoring in 12S Li-ion packs, comparing each cell against upper/lower thresholds using shared reference. IC Role / Device Role / Timing Role: Precision comparator with low VIO drift over temperature ensuring accurate end-of-charge and deep-discharge cutoff. Use Value: Extends cycle life by preventing voltage excursions beyond 4.25V/2.5V limits, validated across −40°C to 85°C operating range. |
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; higher input bias current (25nA), wider VIO (7mV), no military temp grade. | Limited to commercial/industrial temp ranges; unsuitable for high-impedance sources or extended thermal environments. | Select LM393DR only when cost is primary constraint and input impedance >100kΩ is acceptable. |
| TLC372CDR | Same die, commercial temp range (0°C to 70°C); identical electrical specs except VIO drift and thermal limits. | Valid for non-military applications where ambient temperature stays below 70°C and long-term reliability under thermal cycling is not critical. | Choose TLC372CDR for consumer or lab equipment where MIL-SPEC qualification is unnecessary. |
Compared with LM393DR, TLC372MDR offers 5000× lower input bias current and guaranteed −55°C to 125°C operation; compared with TLC372CDR, it extends usable temperature range by 55°C at the cold end and 55°C at the hot end - critical for under-hood automotive or aerospace deployments.
Availability
TLC372MDR is available at Aetrix Electronics and suitable for industrial automation, avionics subsystems, and energy infrastructure projects requiring stable component supply across extended temperature extremes and long production lifecycles.
Supply support for TLC372MDR 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 experience in high-reliability analog IC design.
The TLC372 product line was developed to replace bipolar comparators in military, aerospace, and industrial applications demanding ultra-low input current, wide supply range, and robust thermal performance - delivering CMOS advantages without sacrificing speed or noise immunity.
FAQ
What is the maximum operating temperature range for the TLC372MDR?
The TLC372MDR is characterized for continuous operation from −55°C to 125°C, meeting MIL-PRF-38535 Class B requirements. This full military temperature range is explicitly confirmed in Section 2 of the datasheet and distinguishes it from commercial variants like TLC372CDR (0°C to 70°C) and industrial-grade TLC372IDR (−40°C to 85°C). The TLC372MDR maintains specified electrical performance-including input offset voltage ≤5mV and supply current ≤400µA-across this entire range.
Does the TLC372MDR support dual-supply operation?
Yes, the TLC372MDR supports dual-supply operation when the absolute difference between VDD and VSS is maintained between 3V and 16V. Section 2 of the datasheet confirms operation from ±1.5V to ±8V supplies. Inputs remain functional within the common-mode range of VSS to VDD−1.5V, and outputs swing to VSS (not ground) in dual-supply mode. This capability enables use in legacy ±5V or ±12V analog systems without level-shifting circuitry.
Can the TLC372MDR outputs drive TTL logic directly?
No - the TLC372MDR features open-drain outputs and cannot source current. To interface with TTL inputs, an external pull-up resistor to a compatible voltage (e.g., 5V) is required. Section 4.1 specifies that output logic HIGH is defined by the external pull-up, while LOW is actively pulled to VSS. Typical pull-up values range from 1kΩ to 10kΩ depending on rise-time and power requirements, as detailed in Section 7.4.4.
How does the input offset voltage of the TLC372MDR compare to the LM393?
The TLC372MDR has a maximum input offset voltage of 5mV over its full −55°C to 125°C range, while the LM393 specifies 7mV max over 0°C to 70°C. Per Section 5.3, TLC372MDR's VIO remains stable across temperature with typical drift <1mV from −55°C to 125°C, whereas LM393 exhibits greater thermal hysteresis and wider unit-to-unit variation. This makes TLC372MDR preferable for precision thresholding in thermally variable environments.
Is the TLC372MDR pin-compatible with the LM393DR?
Yes - the TLC372MDR uses the same SOIC-8 (D) package and identical pinout as LM393DR, as confirmed in Section 4 ("Pin Configuration and Functions") and Feature List item #9. Both share pin assignments: OUT A (1), IN− A (2), IN+ A (3), GND (4), IN+ B (5), IN− B (6), OUT B (7), VCC (8). This allows drop-in replacement in existing LM393 layouts, provided the system accommodates CMOS input characteristics and open-drain output behavior.
TLC372MDR 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:
- Active
- 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
TLC372MDR FAQ
1.How can I place an order for TLC372MDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372MDR 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 TLC372MDR reliable?
The price and inventory of TLC372MDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372MDR is usually 5 days.
3.What payment methods are accepted for TLC372MDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372MDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372MDR?
TLC372MDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372MDR 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 TLC372MDR?
For technical support, including TLC372MDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372MDR requirements.
6.How does Aetrix verify that TLC372MDR is sourced from the original manufacturer or authorized distributors?
All TLC372MDR 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 TLC372MDR meets industry standards.
7.What is the process for return or replacement of TLC372MDR?
All TLC372MDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC372MDR, 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 TLC372MDR part is unused and in its original packaging.
Return procedure for TLC372MDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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