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Texas Instruments TL331IDBVRQ1
- Part No.:
- TL331IDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL331IDBVRQ1.pdf
- Description:
- IC COMPARATOR 1 DIFF SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,094
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Product details
Overview
TL331IDBVRQ1 from Texas Instruments is an automotive-grade single voltage comparator in SOT-23-5 package, designed for operation from 2V to 36V supply, with ±4 mV max input offset voltage over temperature, 0.7 mA typical supply current, and open-collector output compatible with TTL/MOS/CMOS logic. It serves as a precision level-shifting and threshold-detection element in powertrain monitoring circuits.
For engineers reviewing the TL331IDBVRQ1 datasheet, TL331IDBVRQ1 pinout, TL331IDBVRQ1 application, or TL331IDBVRQ1 equivalent, this page delivers verified electrical specs, AEC-Q100 Grade 1 thermal validation (–40°C to +125°C), SOT-23 pin mapping, automotive use-case implementation guidance, and two validated alternative comparators with documented functional trade-offs.
Technical Context
The TL331IDBVRQ1 implements a PNP Darlington input stage enabling low input bias current (25 nA max) and rail-to-rail input common-mode range down to ground, while maintaining high gain and fast response. Its open-collector NPN output supports wired-AND logic and flexible pull-up voltage selection independent of VCC.
It operates across 2V–36V single-supply or dual-supply configurations (ΔV ≥ 2V, VCC ≥ VCM + 1.5V), with differential input voltage tolerance up to ±36V and guaranteed functionality over –40°C to +125°C junction temperature - meeting AEC-Q100 Grade 1 requirements for body control and infotainment systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct connection to 12 V/24 V automotive batteries and high-side sensing without external regulation |
| Input Offset Voltage (max) | ±4 mV over –40°C to +125°C - ensures reliable threshold detection in engine bay or under-hood environments |
| Supply Current (typ) | 0.7 mA at 5 V - enables low-power wake-up monitoring in always-on vehicle subsystems |
| Input Bias Current (max) | 25 nA over temperature - minimizes error in high-impedance sensor interface circuits (e.g., thermistor dividers) |
| Propagation Delay (typ) | 1.3 µs at 5 V with TTL input - suitable for real-time fault detection in motor control feedback loops |
| Output Type | Open-collector NPN - allows logic-level translation to 3.3 V/5 V MCU I/O or direct driving of LEDs/relays via external pull-up |
| Junction Temp Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-dash and powertrain applications |
Pinout & Package
SOT-23-5 (DBV) package, 2.90 mm × 1.60 mm body size, surface-mount, moisture sensitivity level 1 (MSL 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Negative Input (IN–) | Inverting input node; comparison reference point - must remain within common-mode range (0 V to VCC – 1.5 V) for valid operation |
| 2 | Ground (GND) | Power return path and signal reference - connects directly to PCB ground plane for noise immunity |
| 3 | Positive Input (IN+) | Non-inverting input node; monitored signal input - supports rail-to-ground sensing for battery voltage or sensor thresholds |
| 4 | Output (OUT) | Open-collector NPN drain - sinks current when IN– > IN+ + VIO; requires external pull-up for logic-high state |
| 5 | Supply (VCC) | Positive power rail - accepts 2 V–36 V; powers internal bias and output stage; decoupling capacitor recommended |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - enables deployment in engine control units and HVAC modules |
| Differential input voltage range | ±36 V - permits direct connection across high-voltage nodes (e.g., 24 V bus vs. ground) without clamping diodes |
| Input common-mode range | Includes ground (0 V) - supports low-side current sensing and battery undervoltage detection down to 0 V |
| HBM/CDM ESD rating | ±2000 V HBM / ±750 V CDM - meets automotive system-level ESD robustness requirements per ISO 10605 |
| Wired-AND capability | Open-collector output enables multiple comparators to share one pull-up and drive a single interrupt line to MCU |
Applications
| Engine Coolant Temperature Monitoring | 12 V Battery Undervoltage Detection |
|---|---|
|
Use Scenario: Detect coolant temperature exceeding 110°C using NTC thermistor divider feeding TL331IDBVRQ1's IN+ against fixed reference on IN–. IC Role / Device Role / Timing Role: Precision analog threshold detector converting analog temperature signal into digital flag for ECU warning logic. Use Value: ±4 mV offset ensures <±0.5°C trip-point error over full temperature range; 1.3 µs response enables rapid overheat shutdown sequencing. |
Use Scenario: Monitor 12 V battery voltage during cranking to trigger backup power switchover before voltage drops below 9.5 V. IC Role / Device Role / Timing Role: Low-voltage supervisor with rail-to-ground input capability, driving MCU reset or PMIC enable via open-collector output. Use Value: 2 V minimum supply allows operation during deep brown-out; input bias <25 nA prevents loading of high-resistance voltage divider. |
| Infotainment Display Backlight Control | Body Control Module Window Motor Stall Detection |
|
Use Scenario: Compare ambient light sensor output to adjustable threshold to enable/disable LCD backlight in automotive dash cluster. IC Role / Device Role / Timing Role: Ambient-light-triggered switch with hysteresis added externally; output drives LED driver enable pin. Use Value: 36 V max supply accommodates display power rail variations; open-collector output interfaces directly to 3.3 V logic without level shifter. |
Use Scenario: Sense motor current rise during window pinch detection by comparing amplified shunt voltage against dynamic threshold. IC Role / Device Role / Timing Role: Fast-response current comparator detecting stall condition within 2 ms to halt motor before glass breakage. Use Value: 1.3 µs propagation delay ensures sub-millisecond fault response; ±36 V input rating tolerates inductive kickback during motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL331BDBVRQ1 | Lower offset (±2.5 mV typ), lower supply current (0.43 mA typ), Grade 1 temp range (–40°C to +125°C) | Drop-in replacement for TL331IDBVRQ1 in new designs requiring tighter accuracy and lower power | Select when upgrading legacy TL331I-Q1 designs for improved performance without layout change |
| LM393QPWRQ1 | Dual comparator, higher input bias (250 nA max), same Grade 1 rating, 1.3 µs response | Requires redesign to use only one channel; less suitable for ultra-low-bias sensor interfaces | Choose when dual-channel functionality is needed or when sourcing common dual-comparator footprint across platforms |
Compared with TL331IDBVRQ1, TL331BDBVRQ1 offers superior offset and quiescent current for precision sensing, while LM393QPWRQ1 provides channel density at the cost of input bias and design flexibility - both require no PCB changes but differ in functional scope and parameter optimization.
Availability
TL331IDBVRQ1 is available at Aetrix Electronics and suitable for automotive powertrain monitoring, body control module voltage supervision, and infotainment system ambient-light management requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.
Supply support for TL331IDBVRQ1 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 automotive IC development and AEC-Q100 qualification expertise.
The TL331-Q1 family was engineered specifically for cost-sensitive automotive subsystems requiring robust, wide-supply-voltage comparators - delivering reliability, low power, and drop-in compatibility across generations from "I" to "B" variants.
FAQ
What is the maximum operating junction temperature for TL331IDBVRQ1?
The TL331IDBVRQ1 is rated for a maximum junction temperature of +125°C, consistent with its AEC-Q100 Grade 1 qualification. This specification is confirmed in Section 5.5 of the official datasheet and applies across the full recommended operating supply range of 2 V to 36 V. Thermal derating must be applied if ambient conditions or PCB layout exceed the 211.7°C/W junction-to-ambient thermal resistance of the SOT-23-5 package.
Does TL331IDBVRQ1 support rail-to-rail input operation?
TL331IDBVRQ1 supports input voltages down to ground (0 V) but not up to VCC - its common-mode input range extends from 0 V to VCC – 1.5 V at 25°C, and to VCC – 2.0 V over temperature. This enables true ground-referenced sensing but prohibits direct connection of inputs to VCC. The device does not support full rail-to-rail input swing, unlike some newer comparator families.
Can TL331IDBVRQ1 be used with a 3.3 V microcontroller I/O pin?
Yes - TL331IDBVRQ1's open-collector output is fully compatible with 3.3 V logic when paired with a 3.3 V pull-up resistor. The output transistor sinks current to ground when active, and presents high impedance otherwise, allowing safe interfacing to 3.3 V MCU pins without level-shifting circuitry. Ensure the pull-up value limits sink current to ≤4 mA per the datasheet's VOL specification.
Is TL331IDBVRQ1 pin-compatible with TL331BDBVRQ1?
Yes - TL331IDBVRQ1 and TL331BDBVRQ1 share identical SOT-23-5 (DBV) packaging and pinout (IN–, GND, IN+, OUT, VCC). They are functionally pin-compatible and electrically interchangeable in existing layouts, though TL331BDBVRQ1 delivers improved offset voltage and lower supply current. No PCB modifications are required for substitution.
What is the purpose of the open-collector output in TL331IDBVRQ1?
The open-collector output in TL331IDBVRQ1 enables flexible logic-level translation, wired-AND bus configurations, and direct driving of loads like LEDs or relays. It allows the output high-state voltage to be set independently of VCC via an external pull-up - critical for interfacing with mixed-voltage systems (e.g., 36 V supply with 3.3 V MCU). The output actively pulls low only; high state relies on external biasing.
TL331IDBVRQ1 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 @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 700µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SOT-23-5
TL331IDBVRQ1 FAQ
1.How can I place an order for TL331IDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL331IDBVRQ1 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 TL331IDBVRQ1 reliable?
The price and inventory of TL331IDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL331IDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TL331IDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL331IDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL331IDBVRQ1?
TL331IDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL331IDBVRQ1 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 TL331IDBVRQ1?
For technical support, including TL331IDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL331IDBVRQ1 requirements.
6.How does Aetrix verify that TL331IDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TL331IDBVRQ1 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 TL331IDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TL331IDBVRQ1?
All TL331IDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TL331IDBVRQ1, 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 TL331IDBVRQ1 part is unused and in its original packaging.
Return procedure for TL331IDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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