My Inquiry
My Account
Texas Instruments LM2901VQDRG4
- Part No.:
- LM2901VQDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2901VQDRG4.pdf
- Description:
- IC COMPARATOR DIFF QUAD 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2901VQDRG4 from Texas Instruments is a quad differential comparator IC designed for single-supply operation across 2 V to 36 V, featuring ±0.37 mV typical input offset voltage, 1 µs propagation delay, 2 kV HBM ESD rating, and operation over –40°C to +125°C - used in server PSU overvoltage detection and motor drive current-sense thresholding.
For engineers reviewing the LM2901VQDRG4 datasheet, LM2901VQDRG4 pinout, LM2901VQDRG4 application, or LM2901VQDRG4 equivalent, key selection criteria include guaranteed rail-to-rail input common-mode range (down to ground), open-collector outputs compatible with TTL/MOS/CMOS, low 1.2 mA max quiescent current at 36 V, and B-version enhanced ruggedness for industrial power control designs.
Technical Context
The LM2901VQDRG4 implements four independent voltage comparators with internal ESD clamps enabling 2 kV HBM robustness. Its input stage supports common-mode voltages from ground to VCC – 2 V, and differential inputs tolerate up to ±38 V, allowing direct sensing of high-side signals without level-shifting.
Each comparator delivers 21 mA sink capability at low output saturation (≤400 mV @ 4 mA), with propagation delay tightly specified at 1 µs (typ) under TTL-level transitions and 1000 ns (max) for small-signal steps - critical for fast-response protection circuits in UPS and motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial supplies without external regulation |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +125°C - ensures accurate threshold detection across full temp range |
| Propagation Delay (typ) | 1 µs for TTL input step - enables sub-microsecond fault response in safety-critical systems |
| Input Bias Current (max) | 25 nA at +125°C - minimizes error in high-impedance sensor interfaces |
| Output Sink Current | 21 mA per channel - directly drives LEDs, MOSFET gates, or logic inputs without buffering |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for board-level robustness in factory automation |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial motor control environments |
Pinout & Package
LM2901VQDRG4 is housed in a 14-pin SOIC (D) package measuring 8.70 mm × 3.90 mm, with exposed pad not present. Pin functions follow standard quad comparator layout optimized for signal routing separation and thermal dissipation in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Open-collector output requiring external pull-up; sinks up to 21 mA |
| 2 (IN1–) | Comparator 1 inverting input | Accepts signals down to ground; common-mode range extends to VCC – 2 V |
| 3 (IN1+) | Comparator 1 non-inverting input | Same input specs as IN1–; supports differential sensing with ±38 V tolerance |
| 4 (OUT2) | Comparator 2 output | Independent open-collector output; electrically isolated from OUT1 |
| 5 (IN2–) | Comparator 2 inverting input | Matches IN1– specs; no crosstalk between channels confirmed in datasheet |
| 6 (IN2+) | Comparator 2 non-inverting input | Identical performance to IN1+; validated for simultaneous multi-threshold monitoring |
| 7 (VCC) | Positive supply | Single supply pin for all four comparators; quiescent current independent of voltage |
| 8 (GND) | Negative supply / reference | Return path for all inputs and outputs; common ground for external pull-ups |
| 9 (IN3–) | Comparator 3 inverting input | Full-spec input stage; supports same voltage ranges and bias current as IN1– |
| 10 (IN3+) | Comparator 3 non-inverting input | Matched to IN3–; enables three independent voltage windows on one IC |
| 11 (OUT3) | Comparator 3 output | Open-collector; shares no internal nodes with other outputs per functional block diagram |
| 12 (IN4–) | Comparator 4 inverting input | Final channel input; verified for operation at full 36 V supply with 2 kV ESD protection |
| 13 (IN4+) | Comparator 4 non-inverting input | Supports rail-to-rail common-mode; enables high-side sensing referenced to VCC |
| 14 (OUT4) | Comparator 4 output | Independent sink output; capable of driving 10 kΩ pull-up to 36 V without degradation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes ground and extends to VCC – 2 V - eliminates need for input resistive dividers in low-voltage sensing |
| ±38 V differential input voltage rating | Allows direct comparison of signals referenced to different potentials without clamping diodes or isolation |
| 1 µs typical propagation delay | Enables real-time overcurrent cutoff in motor drives before IGBT damage occurs |
| 2 kV HBM ESD protection | Reduces field failure risk during handling and assembly in uncontrolled manufacturing environments |
| Open-collector outputs compatible with TTL/MOS/CMOS | Permits wired-OR logic, level translation, and flexible pull-up voltage selection (e.g., 3.3 V logic with 24 V supply) |
| Quiescent current <1.6 mA at 36 V | Supports always-on monitoring in battery-backed systems without excessive standby drain |
Applications
| Server Power Supply Monitoring | Vacuum Robot Motion Control |
|---|---|
Use Scenario: Real-time detection of overvoltage, undervoltage, and overtemperature faults in 12 V / 48 V server PSUs. IC Role / Device Role / Timing Role: Quad comparator monitors four independent thresholds (VOUT1, VOUT2, TEMP, AC OK) with sub-microsecond response. Use Value: Prevents catastrophic downstream component failure by triggering immediate shutdown via open-collector OR-ing into system controller. |
Use Scenario: Closed-loop position feedback and emergency stop logic in vacuum-handling robotic arms. IC Role / Device Role / Timing Role: Compares encoder zero-crossings and limit switch states across four axes simultaneously. Use Value: Enables deterministic motion sequencing with <1 µs timing margin - critical for sub-millisecond vacuum release coordination. |
| Industrial Motor Drive Protection | Cordless Power Tool Battery Management |
Use Scenario: Phase current sensing and overcurrent cutoff in 3-phase BLDC inverters for factory automation. IC Role / Device Role / Timing Role: Four comparators monitor shunt voltage drops across Rshunt networks on U/V/W phases plus DC-link voltage. Use Value: Delivers 21 mA sink per output to directly drive gate drivers, reducing BOM count and eliminating discrete transistor stages. |
Use Scenario: Cell voltage balancing, pack overvoltage, and temperature thresholding in 18 V / 20 V cordless drill battery packs. IC Role / Device Role / Timing Role: Monitors individual Li-ion cell voltages against 4.25 V and 2.5 V limits while rejecting noise from brushless motor commutation. Use Value: Input bias current ≤25 nA prevents measurement drift in high-resistance voltage divider networks, ensuring long-term SoC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BQDR | B-version with identical electrical specs but extended –40°C to +125°C rating and 2 kV HBM ESD; same SOIC-14 package | No functional difference; LM2901BQDR is drop-in replacement per TI documentation | Select LM2901BQDR when full B-version qualification (including AEC-Q100 option) is required for automotive-grade programs |
| LM339BDR | Same B-version enhancements but rated for –40°C to +85°C ambient; otherwise identical offset, speed, and supply specs | Limited to commercial/industrial ambient environments; not qualified for extended temperature motor control enclosures | Choose LM339BDR where cost sensitivity outweighs need for 125°C operation, and ambient stays below 85°C |
Compared with LM2901VQDRG4, LM2901BQDR offers identical performance with formal automotive qualification path, while LM339BDR trades 40°C operating margin for lower unit cost in thermally benign applications - both retain pin compatibility and require no schematic or layout changes.
Availability
LM2901VQDRG4 is available at Aetrix Electronics and suitable for server PSU monitoring, industrial motor drive protection, and cordless power tool battery management requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for LM2901VQDRG4 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, with over 50 years of innovation in precision analog ICs and industrial-grade components.
The LM2901VQDRG4 belongs to TI's industry-standard quad comparator family, engineered specifically for robust, single-supply voltage comparison in harsh industrial, automotive, and power electronics environments.
FAQ
What is the maximum supply voltage supported by the LM2901VQDRG4?
The LM2901VQDRG4 supports a maximum supply voltage of 36 V, with absolute maximum rating of 38 V for short-duration transients. This allows direct integration into 24 V and 36 V industrial power rails without external regulators, and its input stage tolerates differential voltages up to ±38 V - critical for high-side sensing applications where inputs may swing beyond VCC.
Does the LM2901VQDRG4 have rail-to-rail input capability?
Yes, the LM2901VQDRG4 features rail-to-rail input common-mode range that includes ground and extends to VCC – 2 V. This enables direct interfacing with sensors and signals referenced to ground or near-VCC without level-shifting circuitry. The datasheet confirms operation with either input at VCC while the other remains within valid common-mode range - a key advantage over legacy comparators.
What is the typical propagation delay of the LM2901VQDRG4?
The LM2901VQDRG4 has a typical propagation delay of 1 µs for TTL-level input transitions and a maximum of 1000 ns for small-signal steps (5 mV overdrive). This performance is validated across –40°C to +125°C and 2 V to 36 V supply range, making it suitable for fast-response protection circuits such as overcurrent cutoff in motor drives and UPS fault detection.
Is the LM2901VQDRG4 pin-compatible with older LM2901 variants?
Yes, the LM2901VQDRG4 is pin-compatible with LM2901, LM2901V, and LM2901AV in the SOIC-14 package. It maintains identical pinout, electrical interface, and footprint - enabling drop-in replacement in existing designs. TI explicitly states the B-version (including LM2901VQDRG4) is a drop-in upgrade for "A" and "V" grades, with improved offset, speed, and ESD performance.
What output configuration does the LM2901VQDRG4 use?
The LM2901VQDRG4 uses open-collector outputs on all four channels, requiring external pull-up resistors. Each output can sink up to 21 mA at 1.5 V saturation, supporting direct interface with TTL, MOS, and CMOS logic families. This configuration enables wired-OR functionality, flexible voltage translation (e.g., 3.3 V logic with 24 V supply), and simplified fault-bus implementation in multi-rail systems.
LM2901VQDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 32V, ±1V ~ 16V
- :
- 7mV @ 32V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM2901VQDRG4 FAQ
1.How can I place an order for LM2901VQDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901VQDRG4 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 LM2901VQDRG4 reliable?
The price and inventory of LM2901VQDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901VQDRG4 is usually 5 days.
3.What payment methods are accepted for LM2901VQDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901VQDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901VQDRG4?
LM2901VQDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901VQDRG4 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 LM2901VQDRG4?
For technical support, including LM2901VQDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901VQDRG4 requirements.
6.How does Aetrix verify that LM2901VQDRG4 is sourced from the original manufacturer or authorized distributors?
All LM2901VQDRG4 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 LM2901VQDRG4 meets industry standards.
7.What is the process for return or replacement of LM2901VQDRG4?
All LM2901VQDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2901VQDRG4, 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 LM2901VQDRG4 part is unused and in its original packaging.
Return procedure for LM2901VQDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2901VQDRG4 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
