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Texas Instruments LMC7211AIM/NOPB
- Part No.:
- LMC7211AIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC7211AIM/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:545
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Product details
Overview
LMC7211AIM/NOPB from Texas Instruments is a micropower CMOS comparator in SOIC-8 package, featuring rail-to-rail input voltage range, push-pull output, 7 μA typical supply current at 5 V, 420 ns propagation delay (low-to-high), and operation across 2.7 V to 15 V supply. It serves as a precision signal-level decision element in battery-powered sensor monitoring and low-voltage power supply supervision circuits.
For engineers reviewing the LMC7211AIM/NOPB datasheet, LMC7211AIM/NOPB pinout, LMC7211AIM/NOPB application, or LMC7211AIM/NOPB equivalent, this page delivers verified electrical specs, SOIC-8 terminal mapping, real-world use cases for portable electronics, and two validated alternative comparators with documented functional and application differences.
Technical Context
The LMC7211AIM/NOPB implements a single-channel CMOS comparator architecture with rail-to-rail input stage enabling detection of signals within 0.2 V of V− and up to 0.3 V beyond V+. Its push-pull output drives both sourcing (up to 30 mA) and sinking (up to 45 mA) loads without external pull-up resistors.
It operates over −40°C to +85°C junction temperature with specified performance at 2.7 V, 5 V, and 15 V supplies. Input offset voltage is graded at 5 mV (LMC7211-NAI) or 15 mV (LMC7211-NBI); this part corresponds to the NAI grade per TI's orderable part matrix and marking "LMC7211AIM".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 15 V - supports direct integration into 3 V logic systems and legacy 12–15 V analog rails without level-shifting. |
| Input Offset Voltage (max) | 5 mV - enables accurate threshold detection for millivolt-level sensor outputs (e.g., thermistor or current-sense resistor signals). |
| Supply Current (typ) | 7 μA at 5 V - extends battery life in always-on monitoring circuits (e.g., smoke detector standby mode). |
| Propagation Delay (tPLH) | 420 ns at 100 mV overdrive, 5 V - sufficient for medium-speed window comparators and power-good sequencing. |
| Input Common-Mode Range | V− −0.2 V to V+ +0.3 V - allows direct sensing of supply voltages (e.g., VCC monitoring) and zero-crossing detection with single-supply biasing. |
| Output Type | Push-pull - eliminates need for external pull-up, simplifies interface to TTL/CMOS logic and LED drive without added components. |
| ESD Tolerance | 2 kV HBM - meets basic handling robustness requirements for assembly in non-classified environments. |
Pinout & Package
LMC7211AIM/NOPB uses an 8-pin SOIC (D) surface-mount package measuring 4.90 mm × 3.91 mm × 1.75 mm, RoHS-compliant with Sn lead finish and Level-1 MSL rating.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−) | Differential input node; accepts signals from V− −0.2 V to V+ +0.3 V; high-impedance (0.04 pA typical input current). |
| 2 | Non-Inverting Input (+) | Differential input node; identical common-mode range and impedance as Pin 1; used for reference or signal routing. |
| 3 | Ground (V−) | Negative supply terminal; must be connected to system ground or negative rail; defines lower bound of input/output swing. |
| 4 | Output | Push-pull digital output; sources up to 30 mA, sinks up to 45 mA; logic-high ≈ V+ − 0.4 V (at 5 V), logic-low ≈ 0.4 V (at 5 V). |
| 5 | NC | No connect - internally unconnected; must remain floating or grounded per layout best practice (TI recommends leaving unconnected). |
| 6 | V+ | Positive supply terminal; accepts 2.7–15 V; powers internal circuitry and defines upper output voltage limit. |
| 7 | NC | No connect - internally unconnected; same handling guidance as Pin 5. |
| 8 | NC | No connect - internally unconnected; same handling guidance as Pin 5. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Enables direct sensing of signals near supply rails (e.g., VCC/2 reference or battery voltage drop), eliminating front-end op-amp buffers. |
| Push-pull output | Drives CMOS/TTL loads directly without pull-up resistors, reducing BOM count and PCB area in space-constrained designs. |
| 7 μA supply current | Supports multi-year operation on coin-cell batteries in always-on status-monitoring applications (e.g., tamper detection, low-power wake-up triggers). |
| 2.7–15 V operation | Single device qualifies across 3 V microcontroller domains and industrial 12 V supply rails, simplifying inventory and design reuse. |
| 5 mV max offset (NAI grade) | Permits accurate threshold setting for ±10 mV analog signals (e.g., photodiode current converted via transimpedance amplifier). |
Applications
| Battery Voltage Monitor | Light Sensor Interface |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger under-voltage lockout or full-charge cutoff. IC Role / Device Role / Timing Role: Comparator compares sensed battery voltage against fixed reference (e.g., 2.5 V from LDO or shunt reference) to assert digital flag. Use Value: Rail-to-rail input allows direct connection to battery node; 7 μA quiescent current minimizes self-discharge impact on battery runtime. |
Use Scenario: Detecting ambient light level changes using a photodiode or photoresistor in portable devices like notebooks or PDAs. IC Role / Device Role / Timing Role: Compares photocurrent-derived voltage against adjustable threshold to generate ON/OFF control for backlight or display dimming. Use Value: High input impedance (0.04 pA) prevents loading of high-resistance photoresistor dividers; push-pull output directly drives enable pins of LED drivers. |
| PCMCIA Card Status Detection | Alarm Circuit Threshold Trigger |
|
Use Scenario: Sensing insertion/removal of PCMCIA cards by detecting presence of card-supplied 3.3 V or 5 V power rail. IC Role / Device Role / Timing Role: Acts as power-good detector comparing card VCC to internal bandgap reference to assert card-present signal to host controller. Use Value: Wide supply range (2.7–15 V) accommodates both 3.3 V and 5 V PCMCIA standards; SOIC-8 footprint fits tight board spacing in card-edge connectors. |
Use Scenario: Activating audible/visual alarms when temperature, smoke, or gas concentration exceeds safe thresholds in security systems. IC Role / Device Role / Timing Role: Compares conditioned sensor output (e.g., thermistor voltage) to preset trip point to toggle alarm driver transistor or microcontroller interrupt line. Use Value: Input common-mode range extending below ground enables single-supply zero-crossing or differential threshold detection without dual-rail supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC7221AIM/NOPB | Same SOIC-8 package and rail-to-rail input, but open-drain output requiring external pull-up; 10 μA supply current; 500 ns tPLH. | Suitable where mixed-voltage interfacing is needed (e.g., 3.3 V comparator driving 5 V logic bus), not for direct TTL/CMOS load driving. | Select LMC7221AIM/NOPB only if open-drain functionality is required; otherwise LMC7211AIM/NOPB offers lower power and simpler interface. |
| TLV3701CDR | SOIC-8, rail-to-rail input, push-pull output, 1 μA supply current, 360 ns tPLH, but 10 mV max offset (vs. 5 mV) and no 15 V rating. | Better for ultra-low-power sub-μA systems operating ≤5.5 V; unsuitable for 12 V industrial monitoring or high-accuracy <10 mV thresholding. | Choose TLV3701CDR for battery-critical designs at ≤5.5 V; retain LMC7211AIM/NOPB for wider supply range and tighter offset tolerance. |
Compared with LMC7221AIM/NOPB and TLV3701CDR, the LMC7211AIM/NOPB uniquely balances 5 mV offset accuracy, 2.7–15 V operation, and push-pull simplicity-making it optimal for general-purpose portable and industrial threshold detection where supply flexibility and precision coexist.
Availability
LMC7211AIM/NOPB is available at Aetrix Electronics and suitable for battery-powered products, notebook computers, and alarm and security circuits requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for LMC7211AIM/NOPB 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets since 1930.
The LMC7211AIM/NOPB belongs to TI's precision analog comparator product line, engineered specifically for space- and power-constrained portable systems requiring rail-to-rail input operation and minimal quiescent current without sacrificing speed or accuracy.
FAQ
What is the maximum supply voltage rating for the LMC7211AIM/NOPB?
The LMC7211AIM/NOPB has an absolute maximum supply voltage (V+ − V−) of 16 V, with recommended operating range from 2.7 V to 15 V. Operation at 15 V is fully characterized per datasheet Section 4.4, including output voltage swing, propagation delay, and supply current. Exceeding 16 V risks permanent damage.
Does the LMC7211AIM/NOPB support rail-to-rail input operation?
Yes, the LMC7211AIM/NOPB supports rail-to-rail input with common-mode voltage range extending to V− −0.2 V and V+ +0.3 V at 25°C. This allows direct sensing of signals at or slightly beyond the supply rails-critical for applications like VCC monitoring and zero-crossing detection without external level-shifting circuitry.
What is the typical supply current of the LMC7211AIM/NOPB at 5 V?
The LMC7211AIM/NOPB draws 7 μA typical supply current at 5 V with output low, as specified in Section 4.3 and 4.4 of the datasheet. This value increases slightly at temperature extremes (14 μA max at 85°C) and remains stable across load conditions due to its CMOS input stage and optimized biasing.
Is the LMC7211AIM/NOPB pin-compatible with other comparators in SOIC-8 package?
No, the LMC7211AIM/NOPB is not pin-compatible with standard SOIC-8 comparators such as LM393 or TLC3702 due to its unique NC pin configuration (Pins 5, 7, 8). Its pinout matches only the LMC7221 series; substitution requires PCB layout revision unless using the functionally identical LMC7211BIM/NOPB (15 mV offset grade).
What output type does the LMC7211AIM/NOPB feature?
The LMC7211AIM/NOPB features a push-pull output stage capable of both sourcing and sinking current-up to 30 mA high-side and 45 mA low-side at 5 V. Unlike open-drain comparators, it requires no external pull-up resistor and directly interfaces with TTL, CMOS, and LED loads.
LMC7211AIM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 15V, ±1.35V ~ 7.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.04pA @ 5V
- Current - Input Bias (Max):
- 30mA
- Current - Output (Typ):
- 14µA
- Current - Quiescent (Max):
- 75dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 10µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LMC7211AIM/NOPB FAQ
1.How can I place an order for LMC7211AIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7211AIM/NOPB 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 LMC7211AIM/NOPB reliable?
The price and inventory of LMC7211AIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7211AIM/NOPB is usually 5 days.
3.What payment methods are accepted for LMC7211AIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7211AIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7211AIM/NOPB?
LMC7211AIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7211AIM/NOPB 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 LMC7211AIM/NOPB?
For technical support, including LMC7211AIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7211AIM/NOPB requirements.
6.How does Aetrix verify that LMC7211AIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC7211AIM/NOPB 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 LMC7211AIM/NOPB meets industry standards.
7.What is the process for return or replacement of LMC7211AIM/NOPB?
All LMC7211AIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC7211AIM/NOPB, 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 LMC7211AIM/NOPB part is unused and in its original packaging.
Return procedure for LMC7211AIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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