My Inquiry
My Account
Texas Instruments TL331IDBVTG4
- Part No.:
- TL331IDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL331IDBVTG4.pdf
- Description:
- IC COMPARATOR 1 DIFF SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,718
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TL331IDBVTG4 from Texas Instruments is a single, open-collector output voltage comparator in SOT-23-5 package, designed for high-voltage industrial and power management applications. It operates from 2 V to 36 V supply, delivers 430 µA quiescent current at 36 V, achieves 1 µs propagation delay (typical), and features ±4 mV max input offset voltage over –40°C to +125°C - enabling precise threshold detection in server PSUs and motor drives.
For engineers reviewing the TL331IDBVTG4 datasheet, TL331IDBVTG4 pinout, TL331IDBVTG4 application, or TL331IDBVTG4 equivalent, this page provides verified electrical specifications, validated SOT-23-5 pin functions, real-world use cases in vacuum robots and cordless power tools, and two confirmed alternative comparators with documented functional and packaging differences.
Technical Context
The TL331IDBVTG4 implements a PNP Darlington pair input stage, enabling ultra-low input bias current (3.5 nA typ) and rail-to-rail common-mode input range down to ground. Its open-collector NPN output supports wired-AND logic and level-shifting across 2 V–36 V domains without requiring external pull-up voltage matching the comparator supply.
It operates as a standalone voltage comparator only - no internal reference, hysteresis, or latch functionality. Input differential voltage tolerance extends to ±36 V, and output sinking capability reaches 6 mA minimum at 1.5 V VOL, supporting direct interface with TTL, CMOS, and MOS logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct integration into 24 V industrial rails and 36 V battery systems without regulation |
| Input Offset Voltage (max) | ±4 mV over –40°C to +125°C - ensures reliable 10 mV threshold detection across full automotive/industrial temperature range |
| Quiescent Current | 430 µA at 36 V, –40°C to +125°C - supports low-power always-on monitoring in UPS and building automation |
| Propagation Delay | 1 µs typical (high-to-low, 5 mV overdrive) - suitable for fast fault response in motor drive overcurrent protection |
| Input Bias Current (typ) | 3.5 nA at 25°C - minimizes voltage error in high-impedance sensor interfaces (e.g., thermistor or photodiode networks) |
| Output Sink Current | 6 mA min at VOL = 1.5 V - drives standard 5 kΩ pull-up resistors to 5 V or 3.3 V logic without external buffer |
| Differential Input Range | ±36 V - allows direct comparison of signals referenced to different grounds or floating supplies |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body), surface-mount, tape-and-reel compatible. Pin 1 marked by dot; pin numbering follows standard DBV top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Negative input | Inverting terminal; comparison threshold reference point - tied to fixed reference or feedback node |
| 2 (GND) | Ground reference | Power return path and input common-mode baseline - must be low-impedance for stable operation |
| 3 (IN+) | Positive input | Non-inverting terminal; monitored signal input - accepts 0 V to (VCC – 1.5 V) common-mode range |
| 4 (OUT) | Open-collector output | NPN emitter-grounded output transistor - requires external pull-up to define logic HIGH voltage level |
| 5 (VCC) | Positive supply | Primary power rail - supports up to 36 V; current draw independent of supply voltage magnitude |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 2 V–36 V operation eliminates need for local LDO in 12 V/24 V/36 V systems |
| Ground-sensing input | Common-mode range includes 0 V - enables direct monitoring of battery or rail voltages relative to system ground |
| Low input bias current | 3.5 nA typical - preserves accuracy in high-Z resistor-divider references and capacitive sensor circuits |
| Faster response time | 1 µs propagation delay - improves reaction speed in overvoltage/overcurrent shutdown loops vs. legacy TL331I |
| ESD robustness | 2 kV HBM rating - enhances manufacturability and field reliability in automated assembly and harsh environments |
Applications
| Vacuum Robot Motion Control | Single-Phase UPS Monitoring |
|---|---|
Use Scenario: Detecting motor phase current imbalance during high-speed robotic arm actuation to trigger immediate torque correction. IC Role / Device Role / Timing Role: Voltage comparator comparing sensed current against precision reference to assert fault flag within 1 µs. Use Value: Enables sub-millisecond fault response, preventing mechanical stress and position drift in vacuum-grade motion systems. | Use Scenario: Monitoring AC line voltage sag and battery voltage crossover during grid failure to initiate seamless transfer to backup power. IC Role / Device Role / Timing Role: Dual-threshold comparator detecting under-voltage and over-voltage conditions on rectified DC bus. Use Value: Supports <10 ms switchover timing via fast 1 µs response and 36 V tolerant inputs directly on 400 V DC-link derivatives. |
| Server PSU OVP/OCP | Cordless Power Tool Battery Protection |
Use Scenario: Real-time overvoltage protection on 12 V and 48 V server power rails to prevent ASIC damage during transient events. IC Role / Device Role / Timing Role: High-speed comparator comparing regulated rail against trimmed reference to pull down PMIC enable line. Use Value: Delivers 1 µs fault assertion with ±4 mV offset stability over –40°C to +125°C, meeting IEC 62368-1 response requirements. | Use Scenario: Cell voltage monitoring in 18 V–60 V multi-cell Li-ion packs to disable motor drive when any cell exceeds 4.3 V. IC Role / Device Role / Timing Role: Precision comparator interfacing with resistive divider network to detect individual cell overvoltage thresholds. Use Value: 3.5 nA input bias avoids loading high-ratio dividers; 2 V–36 V supply supports direct connection to pack voltage without auxiliary regulator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL331BIDBVR | Same SOT-23-5 package; improved specs - 0.37 mV typ offset, 2 kV HBM ESD, 125°C max junction temp | Drop-in replacement for TL331IDBVTG4 with tighter offset and extended temperature range | Select TL331BIDBVR when higher accuracy or extended temperature operation is required; identical pinout and footprint |
| LM393DR | Dual comparator in SOIC-8; 2 mV max offset, 1.2 mA supply current, 1.3 µs response, –40°C to +85°C | Requires PCB redesign (dual channel, different package); higher power, slower, narrower temp range | Choose LM393DR only if dual-channel functionality is needed and SOIC-8 layout is acceptable; not pin-compatible |
Compared with TL331IDBVTG4, TL331BIDBVR offers lower offset and wider temperature support in identical packaging, while LM393DR trades single-channel optimization for dual functionality at the cost of speed, power, and thermal performance - making TL331IDBVTG4 optimal for space-constrained, high-speed, single-threshold detection.
Availability
TL331IDBVTG4 is available at Aetrix Electronics and suitable for server PSU, cordless power tool, and factory automation applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for TL331IDBVTG4 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 connectivity solutions for industrial, automotive, and consumer markets.
The TL331 family was engineered as a cost-optimized, high-voltage single comparator for power management and system monitoring - emphasizing wide supply range, low quiescent current, and robust input tolerance in compact SOT-23 packaging.
FAQ
What is the maximum supply voltage rating for TL331IDBVTG4?
The TL331IDBVTG4 has an absolute maximum supply voltage (VCC) rating of 36 V. This is confirmed in Section 5.1 of the official datasheet (SLVS238L). Operation beyond 36 V risks permanent device damage. For continuous reliable operation, TI specifies 2 V to 36 V as the recommended operating range - making TL331IDBVTG4 suitable for 24 V industrial rails and 36 V battery systems without derating.
Does TL331IDBVTG4 support rail-to-rail input common-mode voltage?
TL331IDBVTG4 supports common-mode input voltage down to ground (0 V), but its upper limit is VCC – 1.5 V - not rail-to-rail. Per Section 5.8, the input voltage range is specified as (V–) – 0.05 V to (V+) – 2.0 V over temperature. This means both IN+ and IN– must remain ≥0 V and ≤(VCC – 1.5 V) for accurate comparison. Exceeding this upper bound may cause incorrect output behavior, as detailed in Section 7.2.2.1.
Is TL331IDBVTG4 pin-compatible with TL331BIDBVR?
Yes, TL331IDBVTG4 and TL331BIDBVR share identical SOT-23-5 (DBV) packaging and pinout: Pin 1 = IN–, Pin 2 = GND, Pin 3 = IN+, Pin 4 = OUT, Pin 5 = VCC. The TL331B variant is explicitly described in the datasheet as a "drop-in improved replacement" for TL331I and TL331K versions. No PCB or schematic changes are required when upgrading to TL331BIDBVR for enhanced offset, ESD, or temperature performance.
What output configuration does TL331IDBVTG4 use, and how is it interfaced?
TL331IDBVTG4 uses an open-collector NPN output (Pin 4). It actively pulls the output low when IN– > IN+, but presents high impedance otherwise. An external pull-up resistor to a logic-compatible voltage (e.g., 3.3 V or 5 V) is mandatory to define the logic HIGH state. This configuration enables wired-AND logic, level shifting, and compatibility with TTL, CMOS, and MOS inputs - as confirmed in Section 1 Features and Section 6.3.
What is the guaranteed propagation delay specification for TL331IDBVTG4?
The guaranteed propagation delay for TL331IDBVTG4 is 1.3 µs maximum under standard test conditions (Section 5.11), matching the legacy TL331I/K family. However, typical performance is 1 µs (Section 5.9), and the datasheet confirms this faster value applies to the TL331B/TL391B variants. Since TL331IDBVTG4 is the "I" suffix version, design-critical timing should use the 1.3 µs max value - verified in Table 5-11 and Figure 5-11 of SLVS238L.
TL331IDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
TL331IDBVTG4 FAQ
1.How can I place an order for TL331IDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL331IDBVTG4 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 TL331IDBVTG4 reliable?
The price and inventory of TL331IDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL331IDBVTG4 is usually 5 days.
3.What payment methods are accepted for TL331IDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL331IDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL331IDBVTG4?
TL331IDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL331IDBVTG4 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 TL331IDBVTG4?
For technical support, including TL331IDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL331IDBVTG4 requirements.
6.How does Aetrix verify that TL331IDBVTG4 is sourced from the original manufacturer or authorized distributors?
All TL331IDBVTG4 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 TL331IDBVTG4 meets industry standards.
7.What is the process for return or replacement of TL331IDBVTG4?
All TL331IDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL331IDBVTG4, 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 TL331IDBVTG4 part is unused and in its original packaging.
Return procedure for TL331IDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL331IDBVTG4 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…
