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Diodes Incorporated LM2901QT14-13
- Part No.:
- LM2901QT14-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2901QT14-13.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,866
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Product details
Overview
LM2901QT14-13 from Diodes Incorporated is a quad differential voltage comparator IC designed for automotive-grade signal conditioning in single-supply systems. It features 1 mV typical input offset voltage (A-suffix), 0.9 mA supply current at 5 V, rail-to-rail input common-mode range including ground, and open-collector outputs compatible with TTL/CMOS logic. It operates from 2 V to 36 V single supply and is qualified to AEC-Q100 Grade 1 for engine control, battery monitoring, and power rail supervision.
For engineers reviewing the LM2901QT14-13 datasheet, LM2901QT14-13 pinout, LM2901QT14-13 application, or LM2901QT14-13 equivalent, key selection criteria include input offset voltage stability over temperature, output sink capability (6–16 mA), wide supply range tolerance, and automotive qualification status - all critical for robust analog threshold detection in harsh environments.
Technical Context
This device integrates four independent high-gain comparators with PNP input stages enabling input voltages down to −0.3 V and up to 36 V regardless of VCC level. Its uncommitted NPN output transistors support wired-OR configurations and flexible pull-up to any compatible rail within the 2–36 V range.
The internal bias network delivers supply-current independence across the full operating voltage range (2 V to 36 V), while the input common-mode range extends from ground to VCC − 1.5 V at +25°C - enabling direct sensing of low-side current shunts and battery terminals without level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V single supply - supports direct connection to 12 V/24 V automotive batteries without regulation. |
| Input Offset Voltage (Typ) | 1 mV (A-suffix) - enables precise threshold detection at sub-millivolt levels, e.g., for low-voltage battery undervoltage alarms. |
| Supply Current (Quad) | 0.9 mA at 5 V - ensures ultra-low quiescent power in always-on vehicle subsystems like body control modules. |
| Input Bias Current | 25 nA - minimizes loading on high-impedance sensor sources such as thermistors or potentiometers. |
| Output Sink Current | 6–16 mA - drives LEDs, small relays, or logic inputs directly without external buffers. |
| Common-Mode Input Range | Includes ground (0 V) - allows direct interface with ground-referenced sensors and shunt resistors. |
| Output Saturation Voltage | 100 mV at 4 mA - ensures strong logic-low assertion for TTL/CMOS loads even under load variation. |
Pinout & Package
TSSOP-14 package: 4.4 mm × 5.0 mm, 0.65 mm pitch, thin-profile surface-mount package qualified for automotive reflow profiles and space-constrained ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 Output | Open-collector NPN emitter grounded - requires external pull-up; enables wired-OR logic or direct LED drive. |
| 2OUT | Channel 2 Output | Independent open-collector output - supports dual-threshold detection (e.g., window comparator with external resistors). |
| VCC | Positive Supply Rail | Single 2–36 V supply input - powers all four comparators and internal bias network. |
| GND | Ground Reference | System ground return for all channels - defines common reference for inputs and output saturation. |
| 1IN+, 1IN− | Channel 1 Differential Inputs | High-impedance PNP inputs - accept signals from 0 V to VCC − 1.5 V; tolerate overvoltage up to +36 V. |
| 2IN+, 2IN− | Channel 2 Differential Inputs | Identical electrical behavior to Channel 1 - enables parallel or cascaded comparison functions. |
| 3IN+, 3IN− | Channel 3 Differential Inputs | Full functional equivalence - used for multi-zone monitoring (e.g., HVAC sensor array thresholds). |
| 4IN+, 4IN− | Channel 4 Differential Inputs | Enables fourth independent decision node - e.g., fault lockout, redundant validation, or status encoding. |
| 3OUT, 4OUT | Channels 3 & 4 Outputs | Match 1OUT/2OUT characteristics - supports full quad functionality without performance trade-offs. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Rated for −40°C to +125°C operation - validated for under-hood ECU use with PPAP documentation support. |
| Rail-to-Rail Input Common-Mode Range | Includes ground and extends to VCC − 1.5 V - eliminates need for input level-shifting circuitry in battery-sense applications. |
| Low Input Offset Voltage (1 mV typ) | Reduces false triggering in precision voltage monitoring - critical for accurate state-of-charge estimation in 12 V systems. |
| Supply-Independent Quiescent Current | 0.9 mA at 5 V, ~1.2 mA at 30 V - ensures predictable power budgeting across wide battery voltage swings. |
| Open-Collector Output Architecture | Supports mixed-voltage interfacing - pull-up to 3.3 V, 5 V, or 12 V logic rails without level translators. |
Applications
| Engine Coolant Level Detection | Battery Voltage Supervision |
|---|---|
|
Use Scenario: Monitoring coolant reservoir float switch or capacitive level sensor output against fixed thresholds. IC Role / Device Role / Timing Role: Quad comparator implements dual-level alert (low/empty) and system enable (full) with hysteresis. Use Value: 1 mV offset and ground-sensing capability allow direct interface with low-voltage sensor outputs, eliminating op-amp buffer stages. |
Use Scenario: Real-time monitoring of 12 V lead-acid battery voltage during cranking, charging, and sleep modes. IC Role / Device Role / Timing Role: Three comparators detect undervoltage (<11.5 V), overvoltage (>14.8 V), and wake-up threshold (>12.2 V); fourth reserved for diagnostics. Use Value: 2–36 V supply range permits direct connection to battery rail; 0.9 mA ICC enables continuous monitoring without excessive parasitic drain. |
| Brake Light Activation Logic | Window Motor Overcurrent Protection |
|
Use Scenario: Converting brake pedal position sensor analog output into clean ON/OFF signal for LED brake lights. IC Role / Device Role / Timing Role: Single comparator channel with hysteresis converts linear potentiometer output into noise-immune digital trigger. Use Value: 300 ns response time ensures <1 ms activation latency; open-collector output directly drives 12 V LED strings via 1 kΩ pull-up. |
Use Scenario: Detecting motor stall by comparing shunt resistor voltage against calibrated current limit thresholds. IC Role / Device Role / Timing Role: Two comparators implement fast overcurrent trip (≤10 µs response) and latched fault indication using cross-coupled feedback. Use Value: 25 nA input bias current prevents measurement error across high-value shunt networks; rail-to-rail input accommodates bidirectional current sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901DT | Same electrical specs, SO-14 package - lacks AEC-Q100 qualification and automotive PPAP support. | Restricted to industrial/commercial use; not approved for safety-critical automotive subsystems. | Select when cost sensitivity outweighs automotive compliance requirements and qualification traceability is not mandated. |
| TLV3704QDRQ1 | Rail-to-rail input/output, 1.8–16 V supply, 85 µA IQ - lower power but narrower voltage range and higher offset (3.5 mV). | Suitable for low-power body electronics (e.g., door modules), not engine bay or battery monitoring. | Choose for ultra-low-quiescent designs where 36 V operation and sub-2 mV offset are not required. |
Compared with LM2901DT, LM2901QT14-13 adds AEC-Q100 Grade 1 qualification and IATF16949 manufacturing traceability; versus TLV3704QDRQ1, it trades 90× higher supply current for 3.5× lower offset voltage and 2.25× wider supply range - prioritizing precision and ruggedness over micro-power operation.
Availability
LM2901QT14-13 is available at Aetrix Electronics and suitable for automotive engine control units, battery management systems, and ADAS domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM2901QT14-13 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing.
The LM2901Q series belongs to Diodes' automotive-qualified analog portfolio, engineered specifically for reliable voltage comparison in harsh-temperature, high-reliability vehicle subsystems - including powertrain, chassis, and electrification controls.
FAQ
Can LM2901QT14-13 operate with a split supply?
Yes - the device supports dual supplies from ±1.0 V to ±18 V. Its input common-mode range includes ground, and differential input voltage can reach ±36 V. However, the TSSOP-14 package pinout is optimized for single-supply use; split-supply designs require careful PCB layout to avoid ground bounce coupling into sensitive inputs.
What is the maximum sink current per output?
Each output can sink 6–16 mA depending on VOL specification and temperature. At 25°C and 4 mA load, saturation voltage is ≤100 mV. Sustained 16 mA operation raises VOL to ~700 mV and requires thermal derating per θJA = 100°C/W (TSSOP-14); simultaneous full-load on all four outputs exceeds safe junction temperature limits.
Does LM2901QT14-13 require external hysteresis?
Hysteresis is recommended for noisy input environments (e.g., engine compartment sensors) to prevent multiple toggling near threshold. The device does not integrate internal hysteresis; external positive feedback (e.g., 10 MΩ from output to non-inverting input) adds ~10 mV of built-in hysteresis. Clean pulse inputs (e.g., encoder edges) do not require it.
How does the A-suffix affect performance?
The "A" suffix denotes tighter input offset voltage grading: 1 mV typical (vs. 2 mV for non-A), with full-range max of 4 mV (vs. 15 mV). This improves accuracy in precision threshold applications like battery cell balancing or regulated power supply fault detection - verified per production test limits, not typical-only data.
LM2901QT14-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, TTL
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM2901QT14-13 FAQ
1.How can I place an order for LM2901QT14-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901QT14-13 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 LM2901QT14-13 reliable?
The price and inventory of LM2901QT14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901QT14-13 is usually 5 days.
3.What payment methods are accepted for LM2901QT14-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901QT14-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901QT14-13?
LM2901QT14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901QT14-13 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 LM2901QT14-13?
For technical support, including LM2901QT14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901QT14-13 requirements.
6.How does Aetrix verify that LM2901QT14-13 is sourced from the original manufacturer or authorized distributors?
All LM2901QT14-13 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 LM2901QT14-13 meets industry standards.
7.What is the process for return or replacement of LM2901QT14-13?
All LM2901QT14-13 units undergo pre-shipment inspection (PSI). If there is an issue with LM2901QT14-13, 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 LM2901QT14-13 part is unused and in its original packaging.
Return procedure for LM2901QT14-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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