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Texas Instruments TL331MDBVTEP
- Part No.:
- TL331MDBVTEP
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL331MDBVTEP.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,342
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Product details
Overview
TL331MDBVTEP from Texas Instruments is a radiation-tolerant, single-channel voltage comparator in SOT-23 (DBV) package, operating from 2 V to 36 V supply, with 2 mV typical input offset voltage, 25 nA typical input bias current, and open-collector TTL/MOS/CMOS-compatible output-used in precision threshold detection for aerospace power monitoring systems.
For engineers reviewing the TL331MDBVTEP datasheet, TL331MDBVTEP pinout, TL331MDBVTEP application, or TL331MDBVTEP equivalent, this page delivers verified military-grade electrical specs, thermal metrics, DBV package layout guidance, and qualified alternatives for high-reliability embedded control and fault-sensing designs.
Technical Context
The TL331MDBVTEP implements a single differential comparator with rail-to-rail common-mode input range including ground, enabling direct sensing of low-side current shunts or battery voltage rails. Its Epi-FET input stage delivers 25 nA typical input bias current and ±36 V differential input voltage capability.
It features an open-collector output stage compatible with TTL, MOS, and CMOS logic families, supporting wired-AND configurations and flexible pull-up voltage selection up to 36 V. Supply current remains stable at 0.4 mA typ. across 2 V–36 V operation, independent of VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial and aerospace power rails without regulation |
| Input Offset Voltage (TYP) | 2 mV at 25°C - enables accurate 10 mV-level threshold detection in sensor interfaces |
| Input Bias Current (TYP) | 25 nA at 25°C - minimizes error in high-impedance voltage divider or photodiode inputs |
| Response Time | 1.3 µs (100-mV step) - suitable for fast overvoltage/undervoltage fault response in power supplies |
| Output Type | Open-collector - allows level-shifting, wired-AND logic, and interface to 3.3 V/5 V/12 V logic domains |
| Operating Temperature | –55°C to +125°C - qualified for extended-life military, space, and downhole applications |
| Junction-to-Ambient θJA | 299°C/W (DBV) - informs thermal derating for continuous operation in sealed enclosures |
Pinout & Package
SOT-23 (DBV) 5-pin plastic package, 1.45 mm max height, JEDEC MO-178 compliant, with exposed pad not electrically connected. Pin 1 marked by index area; device oriented per top-view diagram with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Accepts reference or feedback signal; common-mode range includes ground |
| 2 (GND) | Ground / VCC− | Reference node for single-supply operation; dual-supply negative rail |
| 3 (IN+) | Non-inverting input | Accepts sensed signal; differential input voltage range ±36 V |
| 4 (VCC) | Positive supply | Supports 2 V–36 V; powers internal circuitry and defines output pull-up ceiling |
| 5 (OUT) | Open-collector output | Requires external pull-up; sinks up to 20 mA; compatible with TTL/MOS/CMOS |
Key Features
| Feature | Design Value |
|---|---|
| Single- or dual-supply operation | Operates from 2 V–36 V single supply or ±2 V–±18 V dual supply with VCC ≥1.5 V above common-mode voltage |
| Low input offset drift | Max 9 mV over –55°C to +125°C - ensures stable trip points across extreme environments |
| Controlled baseline & traceability | Qualified under V62/13611-01XE; full lot traceability and extended product lifecycle for defense programs |
| ESD protection | Human-body model (HBM) rated to 2 kV - enhances robustness during handling and board assembly |
| Low saturation voltage | VOL = 150 mV typ. at IOL = 4 mA - reduces power loss and heat generation in high-duty-cycle comparators |
Applications
| Aerospace Power Sequencing | Medical Battery Management |
|---|---|
|
Use Scenario: Monitoring sequencing of avionics subsystem power rails during cold-start and fault recovery. IC Role / Device Role / Timing Role: Precision comparator detecting 5 V and 12 V rail presence with <10 mV hysteresis. Use Value: 2 mV offset and –55°C to +125°C operation ensure reliable timing margin across flight envelope. |
Use Scenario: Cell voltage monitoring in implantable defibrillator backup batteries. IC Role / Device Role / Timing Role: Low-current comparator triggering charge/discharge cutoff at 3.0 V ±5 mV thresholds. Use Value: 25 nA input bias avoids loading microamp-level battery self-discharge paths. |
| Defense System Watchdog | Industrial Motor Overcurrent Sensing |
|
Use Scenario: Supervising FPGA configuration voltage and reset assertion timing in radar processors. IC Role / Device Role / Timing Role: Dual-threshold comparator generating early warning and hard shutdown signals. Use Value: Open-collector output enables wired-AND of multiple watchdog channels onto shared interrupt line. |
Use Scenario: Detecting overcurrent via shunt voltage in servo drive current loops. IC Role / Device Role / Timing Role: High-speed comparator comparing shunt voltage against programmable reference. Use Value: 1.3 µs response time supports <10 µs fault clearance in IGBT gate-drive safety chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM311MDRPEP | Higher input offset (7.5 mV max), wider supply (±15 V), SOIC-8 package | Better noise immunity in noisy analog sections; requires PCB real estate for larger footprint | Select when higher output drive (50 mA sink) and dual-supply symmetry outweigh size constraints |
| TL331QDR | Commercial-grade (–40°C to +125°C), same DBV package, RoHS-compliant NIPDAU finish | Lacks extended temperature qualification and V62 traceability; lower cost for non-defense use | Select for cost-sensitive industrial controls where MIL-PRF-38535 compliance is not required |
Compared with TL331MDBVTEP, LM311MDRPEP offers greater output current but larger size and looser offset; TL331QDR matches pinout and function but omits defense-grade screening and extended temperature validation-making TL331MDBVTEP uniquely suited for mission-critical aerospace deployments.
Availability
TL331MDBVTEP is available at Aetrix Electronics and suitable for aerospace power sequencing, medical battery management, and defense system watchdog circuits requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for TL331MDBVTEP 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, embedded processing, and high-reliability components for industrial, automotive, and defense markets since 1930.
The TL331-EP product line delivers enhanced reliability, extended temperature operation, and full traceability for aerospace, defense, and medical electronics-designed specifically for systems where failure is not an option.
FAQ
What is the maximum differential input voltage rating for TL331MDBVTEP?
The TL331MDBVTEP supports a maximum differential input voltage of ±36 V, defined as the voltage between IN+ and IN− terminals. This rating allows direct interfacing with high-voltage sensor outputs or unregulated bus monitoring without external attenuation. The absolute maximum rating is specified in the datasheet's Absolute Maximum Ratings table and must not be exceeded to prevent permanent damage to the TL331MDBVTEP.
Does TL331MDBVTEP support true rail-to-rail input operation?
Yes, the TL331MDBVTEP features a common-mode input voltage range that includes ground and extends up to VCC – 2 V over the full temperature range (–55°C to +125°C). This enables direct sensing of signals referenced to ground-such as current-shunt voltages-even when powered from a single 2 V supply. The TL331MDBVTEP does not support input voltages beyond VCC, but its ground-inclusive range is confirmed in the Electrical Characteristics table.
Is TL331MDBVTEP pin-compatible with standard TL331 variants?
Yes, TL331MDBVTEP uses the SOT-23 (DBV) 5-pin package with identical pinout to commercial TL331 variants like TL331QDR and TL331IDBVR. Pin assignments-IN−, GND, IN+, VCC, OUT-are functionally and physically identical. However, TL331MDBVTEP includes additional screening, extended temperature validation, and V62/13611-01XE qualification not present in commercial versions.
What is the output stage configuration of TL331MDBVTEP?
The TL331MDBVTEP features an open-collector NPN output stage, requiring an external pull-up resistor to define the high-state voltage. It can sink up to 20 mA and achieves 150 mV typical saturation voltage at 4 mA load. This architecture enables wired-AND logic, level translation across voltage domains, and compatibility with TTL, MOS, and CMOS inputs-key for interfacing with diverse host controllers in the TL331MDBVTEP application space.
How does TL331MDBVTEP handle supply current variation across voltage and temperature?
TL331MDBVTEP exhibits supply current independence from VCC: typical ICC is 0.4 mA across 2 V–36 V at 25°C, rising only to 0.7 mA maximum over –55°C to +125°C. This stability simplifies power budgeting in wide-input systems such as satellite power distribution units, where the TL331MDBVTEP maintains consistent quiescent draw regardless of bus voltage sag or surge conditions.
TL331MDBVTEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 5mV
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 700µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -55°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
TL331MDBVTEP FAQ
1.How can I place an order for TL331MDBVTEP through Aetrix?
Please submit a Request for Quotation (RFQ) for TL331MDBVTEP 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 TL331MDBVTEP reliable?
The price and inventory of TL331MDBVTEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL331MDBVTEP is usually 5 days.
3.What payment methods are accepted for TL331MDBVTEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL331MDBVTEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL331MDBVTEP?
TL331MDBVTEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL331MDBVTEP 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 TL331MDBVTEP?
For technical support, including TL331MDBVTEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL331MDBVTEP requirements.
6.How does Aetrix verify that TL331MDBVTEP is sourced from the original manufacturer or authorized distributors?
All TL331MDBVTEP 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 TL331MDBVTEP meets industry standards.
7.What is the process for return or replacement of TL331MDBVTEP?
All TL331MDBVTEP units undergo pre-shipment inspection (PSI). If there is an issue with TL331MDBVTEP, 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 TL331MDBVTEP part is unused and in its original packaging.
Return procedure for TL331MDBVTEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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