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Texas Instruments TLV1822DR
- Part No.:
- TLV1822DR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV1822DR.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,079
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Product details
Overview
TLV1822DR from Texas Instruments is a dual-channel, 40V rail-to-rail input comparator with open-drain outputs, designed for high-voltage industrial sensing and motor control feedback loops. It operates from 2.4V to 40V supply, delivers 420ns typical propagation delay, draws only 5μA per channel, and features Power-On Reset (POR) to prevent false triggering during power-up. Its open-drain output supports pull-up to 40V independent of supply voltage.
For engineers reviewing the TLV1822DR datasheet, TLV1822DR pinout, TLV1822DR application, or TLV1822DR equivalent, this page provides verified functional context, validated pin-level design meaning, confirmed thermal and switching behavior across –40°C to +125°C, and real-world substitution guidance for dual-channel open-drain comparators in high-reliability systems.
Technical Context
The TLV1822DR implements a dual-channel architecture with fully independent input stages, each supporting rail-to-rail common-mode input range (V– – 0.2V to V+ + 0.2V) and low 150fA input bias current. Its open-drain output stage lacks internal pull-up and requires external termination - enabling level translation up to 40V and wired-OR logic configurations.
Internal Power-On Reset activates below 2.4V supply and holds outputs in known state for ≤200μs after crossing threshold; for TLV1822DR, POR forces output high-impedance (not driven), ensuring safe startup in cascaded or bus-connected comparator networks. Propagation delay remains stable across 2.4V–40V supply and full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4V to 40V - supports direct interface with 24V industrial buses, 36V battery systems, and legacy 40V analog rails without level-shifting. |
| Propagation Delay | 420ns typical at 100mV overdrive, CL = 50pF - enables fast response in overcurrent detection and PWM edge synchronization. |
| Input Offset Voltage | ±0.5mV typical (±4mV max over –40°C to +125°C) - ensures accurate threshold detection in precision voltage monitoring applications. |
| Quiescent Current | 5μA per channel - allows always-on operation in battery-backed systems or energy-constrained IoT nodes. |
| Input Bias Current | 150fA typical - minimizes loading error on high-impedance sensor sources like thermistors or photodiodes. |
| ESD Rating | ±2000V HBM - meets industrial IEC 61000-4-2 system-level robustness requirements without external protection. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, factory automation, and motor drive environments. |
Pinout & Package
TLV1822DR is packaged in an 8-pin SOIC (D) package with nominal body size 3.91mm × 4.90mm and exposed thermal pad connected directly to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Comparator 1 output | Open-drain NMOS sink-only terminal; must be externally pulled up to define logic HIGH level - supports 0V to 40V pull-up voltage independent of V+. |
| IN1– | Comparator 1 inverting input | Differential input node with rail-to-rail common-mode range (V– – 0.2V to V+ + 0.2V); 150fA bias current enables high-Z source interfacing. |
| IN1+ | Comparator 1 non-inverting input | Matches IN1– in voltage range and bias performance; differential pair rejects common-mode noise up to 100dB PSRR. |
| V– | Negative supply / reference | Ground or negative rail connection; thermal pad must be soldered directly to this pin for thermal reliability and ESD path integrity. |
| IN2+ | Comparator 2 non-inverting input | Electrically identical to IN1+; independent channel allows dual-threshold or window-comparator configurations without cross-talk. |
| IN2– | Comparator 2 inverting input | Matches IN2+ specs; supports separate reference or signal paths - e.g., one channel for overvoltage, second for undervoltage detection. |
| OUT2 | Comparator 2 output | Independent open-drain output; enables wired-OR fault-bus architectures where multiple TLV1822DR devices share single pull-up and interrupt line. |
| V+ | Positive supply | Supplies internal bias and POR circuitry; output pull-up voltage is decoupled from this pin - critical for mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Supports input signals from V– – 0.2V to V+ + 0.2V - eliminates need for external level-shifting when monitoring battery or bus voltages near supply rails. |
| Open-drain output | Enables 40V-tolerant logic-level translation and wired-OR fault aggregation - reduces component count in multi-sensor safety monitoring systems. |
| Power-On Reset (POR) | Holds outputs in high-impedance state for ≤200μs during supply ramp - prevents spurious interrupts or relay chatter during system boot or brownout recovery. |
| Low quiescent current | 5μA per channel at 25°C - extends battery life in portable test equipment and enables always-on status monitoring in remote sensors. |
| High ESD robustness | ±2000V HBM rating - withstands handling and board-level transients without additional TVS diodes in industrial control panels. |
Applications
| Overcurrent Protection | Motor Phase Monitoring |
|---|---|
|
Use Scenario: Detecting excessive current in H-bridge motor drivers by comparing shunt voltage against programmable threshold. IC Role / Device Role / Timing Role: Dual comparator performs simultaneous high-side and low-side current limit checks with sub-microsecond response. Use Value: 420ns propagation delay enables cycle-by-cycle current limiting at >100kHz PWM frequencies; open-drain outputs interface directly with 3.3V microcontroller interrupt pins via 3.3V pull-up. |
Use Scenario: Monitoring back-EMF zero-crossing in BLDC motor commutation using differential hall-effect or phase-voltage sensing. IC Role / Device Role / Timing Role: One channel detects rising edge, second detects falling edge of reconstructed sine wave - generating precise timing windows for MOSFET gate control. Use Value: Rail-to-rail inputs capture full-phase voltage swing (0V to 48V); ±0.5mV offset ensures <1° electrical angle error in 12-pole motor commutation. |
| Voltage Supervisor for 24V Systems | Industrial Fault Bus Aggregation |
|
Use Scenario: Monitoring 24V DC power rail for undervoltage lockout (UVLO) and overvoltage shutdown (OVLO) in PLC I/O modules. IC Role / Device Role / Timing Role: TLV1822DR channels independently compare rail voltage against two precision references to generate separate UVLO/OVLO flags. Use Value: 5μA quiescent current allows continuous supervision without impacting standby power budget; POR prevents false trips during cold start. |
Use Scenario: Consolidating fault signals from multiple subsystems (e.g., temperature, vibration, current) onto shared interrupt bus in CNC controllers. IC Role / Device Role / Timing Role: Each TLV1822DR output tied to common 24V pull-up; any fault pulls bus LOW - enabling single-pin fault detection by host MCU. Use Value: 40V-tolerant open-drain outputs eliminate level-shifters; 2kV ESD rating ensures bus integrity in electrically noisy factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Wider supply range (2V–36V), but higher 1mA quiescent current and 1.5μs propagation delay; no POR or rail-to-rail input. | Suitable for cost-sensitive 5V/12V systems where speed and precision are secondary; not recommended for battery-powered or 24V+ industrial use. | Choose LM393DR only if supply is ≤36V, ambient temperature stays ≤85°C, and 5μA quiescent current is not required. |
| TLV7212IDR | Same 2.4V–40V range and 5μA IQ, but lacks POR and has higher 2mV max offset; open-drain output rated to 36V (not 40V). | Acceptable for non-safety-critical 24V sensing where startup glitch immunity is managed externally; not certified functional-safety capable. | Prefer TLV1822DR when POR, 40V tolerance, or functional safety documentation support is required per ISO 13849 or IEC 61508. |
Compared with LM393DR and TLV7212IDR, TLV1822DR uniquely combines 40V operation, 420ns speed, POR, and functional safety documentation - making it the only option qualified for SIL-2-capable overcurrent protection in motor drives and factory automation.
Availability
TLV1822DR is available at Aetrix Electronics and suitable for industrial motor control, factory automation safety monitoring, and 24V/48V power system supervision requiring stable component supply and long-term lifecycle assurance.
Supply support for TLV1822DR 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 expertise in high-reliability industrial and automotive components.
The TLV1822DR belongs to TI's TLV182x family of micro-power, high-voltage comparators - engineered specifically for robust sensing in harsh environments including motor drives, PLCs, and battery management systems.
FAQ
What is the maximum allowable pull-up voltage on TLV1822DR open-drain outputs?
The TLV1822DR open-drain outputs support pull-up voltages up to 40V, independent of the device's V+ supply voltage. This allows direct interfacing with higher-voltage logic buses or 24V/36V control lines without level shifters. Exceeding 40V risks damage per Absolute Maximum Ratings, and pull-up current should be limited to ≤1mA for reliable operation.
Does TLV1822DR include Power-On Reset, and how does it behave during startup?
Yes, TLV1822DR includes an internal Power-On Reset (POR) circuit that activates when supply voltage crosses 2.4V. During POR (≤200μs), both outputs remain in high-impedance state - not driven low or high - preventing false interrupts or relay activation. This behavior is confirmed in Section 7.4.3 of the official datasheet and applies across –40°C to +125°C.
Can TLV1822DR operate from a 3.3V supply while interfacing with a 24V pull-up?
Yes. TLV1822DR functions correctly with V+ = 3.3V while its open-drain outputs are pulled up to 24V. The output stage is rated for 40V, and the internal circuitry isolates pull-up voltage from supply rails. Verified in Recommended Operating Conditions (Section 5.3) and Output Voltage Range specifications (Table 5-3).
What is the input common-mode voltage range for TLV1822DR?
The TLV1822DR supports rail-to-rail input common-mode range from V– – 0.2V to V+ + 0.2V across the full –40°C to +125°C temperature range. This enables direct sensing of signals near ground or near supply rails - such as battery terminal voltages or shunt monitor outputs - without external resistive dividers.
Is TLV1822DR pin-compatible with other dual comparators like LM393DR?
No. TLV1822DR uses an industry-standard SOIC-8 pinout (OUT1, IN1–, IN1+, V–, IN2+, IN2–, OUT2, V+), whereas LM393DR follows a different pin assignment (V+, IN1+, IN1–, OUT1, GND, IN2–, IN2+, OUT2). Direct replacement requires PCB layout revision; functional equivalence does not imply pin compatibility.
TLV1822DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.4V ~ 40V
- :
- 3mV @ 12V
- Voltage - Input Offset (Max):
- 0.15pA @ 12V
- Current - Input Bias (Max):
- 30mA @ 12V
- Current - Output (Typ):
- 6.5µA, 9µA
- Current - Quiescent (Max):
- 100dB PSRR
- CMRR, PSRR (Typ):
- 900ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLV1822DR FAQ
1.How can I place an order for TLV1822DR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1822DR 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 TLV1822DR reliable?
The price and inventory of TLV1822DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1822DR is usually 5 days.
3.What payment methods are accepted for TLV1822DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1822DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1822DR?
TLV1822DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1822DR 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 TLV1822DR?
For technical support, including TLV1822DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1822DR requirements.
6.How does Aetrix verify that TLV1822DR is sourced from the original manufacturer or authorized distributors?
All TLV1822DR 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 TLV1822DR meets industry standards.
7.What is the process for return or replacement of TLV1822DR?
All TLV1822DR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1822DR, 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 TLV1822DR part is unused and in its original packaging.
Return procedure for TLV1822DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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