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Texas Instruments TLC372MUB
- Part No.:
- TLC372MUB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
TLC372MUB.pdf
- Description:
- TLC372M LOW-POWER LINCMOS DUAL C
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Inventory:595
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Product details
Overview
TLC372MUB 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 full military temperature range (−55°C to 125°C). It is used in overvoltage/undervoltage monitoring circuits for industrial power supplies.
For engineers reviewing the TLC372MUB datasheet, TLC372MUB pinout, TLC372MUB application, or TLC372MUB equivalent, key selection considerations include its ultra-low input bias current (5pA), rail-to-rail common-mode input range including ground, open-drain output compatibility with TTL/MOS/CMOS logic, and military-grade thermal specification.
Technical Context
The TLC372MUB integrates two independent high-impedance (10¹²Ω typical) CMOS differential comparators with ESD-protected inputs and n-channel open-drain outputs. Its input stage enables direct interfacing with high-impedance sensors and reference sources without loading error.
Each comparator features ultra-stable low input offset voltage (1mV typical, 5mV max at 25°C), extremely low input bias current (5pA typical), and common-mode input range extending from ground to VDD − 1.5V across the full −55°C to 125°C operating range - enabling robust operation in noisy, wide-temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4V to 16V - supports both single-supply (VDD/GND) and dual-supply (VDD/VSS) configurations with ≥3V differential. |
| Input Offset Voltage | 1mV typical, 5mV max at 25°C - ensures accurate threshold detection with minimal trip-point drift. |
| Input Bias Current | 5pA typical - preserves signal integrity when interfacing with high-impedance sources like thermistors or photodiodes. |
| Response Time | 200ns typical for 100mV TTL-level input step - enables fast fault detection in real-time protection circuits. |
| Supply Current | 150µA typical (two comparators, 5V, 25°C) - suitable for low-power battery-backed or energy-conscious systems. |
| Operating Temperature | −55°C to 125°C - qualified for aerospace, defense, and under-hood automotive applications requiring extended thermal resilience. |
| Output Type | Open-drain N-channel - allows wired-AND logic, level translation up to 16V, and flexible pull-up configuration. |
Pinout & Package
Ceramic DIP (JG) package - 8-pin dual-in-line with through-hole mounting, hermetically sealed for high-reliability mil-aero use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - requires external pull-up; sinks current when IN+ < IN−. |
| 2 | IN− A | Inverting input of Comparator A - accepts common-mode voltages from ground to VDD − 1.5V. |
| 3 | IN+ A | Non-inverting input of Comparator A - high-impedance (10¹²Ω) node for precision reference or sensor interface. |
| 4 | GND | Ground reference for single-supply operation or VSS in dual-supply mode. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically identical to Pin 3; supports independent dual-threshold detection. |
| 6 | IN− B | Inverting input of Comparator B - matches Pin 2; enables simultaneous high/low window monitoring. |
| 7 | OUT B | Open-drain output of Comparator B - functionally identical to Pin 1; supports independent alert signaling. |
| 8 | VDD | Positive supply rail - accepts 4V–16V; powers both comparators and internal ESD protection circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 5pA typical - eliminates voltage error in high-impedance divider networks and sensor interfaces. |
| Rail-inclusive common-mode range | 0V to VDD − 1.5V across full temperature range - enables ground-referenced sensing without level-shifting. |
| ESD-protected inputs | 1000V HBM rating - enhances handling robustness and field reliability in uncontrolled assembly environments. |
| Pin-compatible with LM393 | Direct drop-in replacement in legacy designs - maintains PCB layout while upgrading to CMOS performance. |
| Open-drain output flexibility | Supports logic-level translation up to 16V and wired-AND of multiple comparators - simplifies multi-condition alarm logic. |
Applications
| Overvoltage Protection | Undervoltage Detection |
|---|---|
|
Use Scenario: Monitoring 24V PLC power rails for exceedance beyond 30V to prevent downstream component damage. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel triggers OV_Alert (LOW) above threshold, second channel remains inactive. Use Value: 200ns response ensures rapid shutdown before transient overvoltage propagates; 5pA bias current avoids loading of high-resistance voltage-divider sense network. |
Use Scenario: Detecting brownout conditions in avionics subsystems where supply must remain ≥19.2V for safe operation. IC Role / Device Role / Timing Role: Comparator B compares sensed rail against 2.5V reference - asserts UV_Alert (LOW) when input falls below trip point. Use Value: −55°C to 125°C qualification guarantees reliable operation across flight envelope; 1mV offset minimizes false-trigger risk near threshold. |
| Temperature Threshold Switching | High-Impedance Sensor Interface |
|
Use Scenario: Activating cooling fans when heatsink temperature exceeds 85°C using thermistor-based voltage divider. IC Role / Device Role / Timing Role: Single comparator compares thermistor-derived voltage to fixed reference - drives fan enable line via open-drain output. Use Value: Rail-to-ground input range allows direct connection to thermistor divider without op-amp buffering; 150µA supply current extends battery life in portable test equipment. |
Use Scenario: Converting photodiode current into digital presence/absence signal in optical encoders. IC Role / Device Role / Timing Role: Comparator A compares transimpedance-amplifier output to adjustable threshold - generates clean logic edge for quadrature decoding. Use Value: 10¹²Ω input impedance prevents signal attenuation; ultra-low 5pA bias current avoids offset error in picoamp-level photodiode currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393MDREPG4 | Bipolar process; higher supply current (500µA typ); wider offset (7mV max); −40°C to 125°C range. | Lacks military temp grade; unsuitable for −55°C environments; lower input impedance (2MΩ) loads high-Z sources. | Select when cost sensitivity outweighs temperature and power requirements; verify input loading impact on sensor accuracy. |
| TLC372CDR | Same CMOS architecture but commercial grade (0°C to 70°C); identical electrical specs except temp range and ESD rating (2kV HBM). | Not qualified for aerospace or extended-temperature industrial deployments; lower reliability assurance per MIL-PRF-38535. | Choose for non-critical commercial systems where full military spec is unnecessary and cost is constrained. |
Compared with LM393MDREPG4 and TLC372CDR, the TLC372MUB uniquely combines military-temperature operation, ultra-low bias current, and CMOS input performance - making it the only option qualified for high-reliability, low-power, wide-temperature threshold detection where sensor fidelity and thermal resilience are mandatory.
Availability
TLC372MUB is available at Aetrix Electronics and suitable for overvoltage protection, undervoltage detection, and temperature threshold switching requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TLC372MUB 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 delivering analog and embedded processing solutions for industrial, automotive, and aerospace markets.
The TLC372MUB belongs to TI's precision analog comparator family, engineered specifically for high-reliability, low-power threshold detection in mission-critical systems operating across extreme environmental conditions.
FAQ
What is the maximum supply voltage rating for the TLC372MUB?
The TLC372MUB has an absolute maximum supply voltage (VDD) rating of 18V, with recommended operating range from 4V to 16V. Exceeding 18V risks permanent damage per Absolute Maximum Ratings table. Operation at 16V is fully characterized across the −55°C to 125°C range, supporting high-voltage industrial bus monitoring applications where the TLC372MUB serves as the front-end decision element.
Does the TLC372MUB support single-supply operation with ground-referenced inputs?
Yes, the TLC372MUB supports true single-supply operation with common-mode input voltage range extending from ground (0V) to VDD − 1.5V across its full −55°C to 125°C operating range. This allows direct interface with ground-referenced sensors and references without level-shifting circuitry - a key design advantage confirmed in Section 5.3 Electrical Characteristics and Figure 6-2 of the official datasheet for the TLC372MUB.
What is the output configuration of the TLC372MUB and how should it be terminated?
The TLC372MUB features open-drain N-channel outputs that require external pull-up resistors. TI recommends pull-up currents between 100µA and 1mA - corresponding to resistor values typically between 5kΩ (for 5V pull-up) and 150kΩ (for 15V pull-up). Direct shorting to VDD is prohibited above 12V to avoid thermal runaway. This output architecture enables wired-AND logic and voltage-level translation, central to the TLC372MUB's role in multi-comparator alarm systems.
How does the TLC372MUB compare to the LM393 in terms of pin compatibility and performance?
The TLC372MUB is explicitly pin-compatible with the LM393 per TI's Device Comparison Table and Pin Configuration section. However, it replaces bipolar input stages with CMOS, delivering 5pA vs. 250nA input bias current, 10¹²Ω vs. 2MΩ input impedance, and 150µA vs. 500µA supply current. These improvements make the TLC372MUB a direct upgrade path in LM393-based designs where precision, power, or thermal performance must be enhanced - without PCB redesign.
Is the TLC372MUB suitable for use in safety-critical aerospace applications?
Yes, the TLC372MUB is manufactured to MIL-PRF-38535 Class K standards and qualified for the full military temperature range (−55°C to 125°C), with 1000V HBM ESD rating and hermetic ceramic DIP (JG) packaging. Its characterization across extreme conditions, low parametric drift, and proven field history in avionics power monitoring make it suitable for DO-254/DO-178 compliant systems - provided system-level validation per application-specific safety requirements is completed for the TLC372MUB.
TLC372MUB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- -
TLC372MUB FAQ
1.How can I place an order for TLC372MUB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC372MUB 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 TLC372MUB reliable?
The price and inventory of TLC372MUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC372MUB is usually 5 days.
3.What payment methods are accepted for TLC372MUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC372MUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC372MUB?
TLC372MUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC372MUB 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 TLC372MUB?
For technical support, including TLC372MUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC372MUB requirements.
6.How does Aetrix verify that TLC372MUB is sourced from the original manufacturer or authorized distributors?
All TLC372MUB 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 TLC372MUB meets industry standards.
7.What is the process for return or replacement of TLC372MUB?
All TLC372MUB units undergo pre-shipment inspection (PSI). If there is an issue with TLC372MUB, 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 TLC372MUB part is unused and in its original packaging.
Return procedure for TLC372MUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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