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Texas Instruments LMC7211AIM5
- Part No.:
- LMC7211AIM5
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMC7211AIM5.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,154
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Product details
Overview
LMC7211AIM5 from Texas Instruments is a micropower CMOS comparator in SOT-23-5 package, featuring rail-to-rail input, push-pull output, 7 μA supply current at 5 V, 420 ns propagation delay (low-to-high), and ±0.3 V beyond-rail input common-mode range. It serves as a precision voltage threshold detector in battery-powered sensor interfaces and portable electronics.
For engineers reviewing the LMC7211AIM5 datasheet, LMC7211AIM5 pinout, LMC7211AIM5 application, or LMC7211AIM5 equivalent, key selection criteria include ultra-low quiescent current, single-supply operation down to 2.7 V, rail-to-rail input capability enabling direct sensing near VCC or GND, and push-pull output eliminating external pull-up resistors in digital logic interfacing.
Technical Context
The LMC7211AIM5 implements a CMOS input stage with p-channel and n-channel differential pairs, enabling rail-to-rail input common-mode range extending 0.3 V beyond both supply rails. Its push-pull output stage integrates complementary MOSFETs capable of sourcing up to 30 mA and sinking up to 45 mA, supporting direct drive of TTL/CMOS loads without external components.
It operates across 2.7 V to 15 V supply range with specified performance at 2.7 V, 5 V, and 15 V. Input offset voltage is graded at 5 mV (LMC7211-NAI) or 15 mV (LMC7211-NBI); the LMC7211AIM5 corresponds to the 5 mV grade per TI's ordering documentation and marking "C00A".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 15 V - supports single-cell Li-ion, dual-cell alkaline, and industrial 12 V systems without level-shifting. |
| Quiescent Supply Current | 7 μA typical at 5 V - enables >10-year battery life in coin-cell–powered wake-up circuits. |
| Propagation Delay | 420 ns (tPLH) at 100 mV overdrive, 5 V supply - sufficient for low-speed window comparators and power-good detection. |
| Input Offset Voltage | 5 mV max (LMC7211-NAI grade) - ensures accurate thresholding for 10-bit ADC reference monitoring or battery voltage alarms. |
| Input Common-Mode Range | −0.3 V to VCC + 0.3 V - allows direct sensing of signals at ground or supply rail, e.g., current-sense resistor voltage drop. |
| Output Type | Push-pull - drives logic inputs directly; no external pull-up required, reducing BOM count and board area. |
| Input Bias Current | 0.04 pA typical - enables high-impedance sensor interfacing (e.g., photodiode, thermistor) without loading error. |
Pinout & Package
SOT-23-5 package: 3.05 mm × 3.00 mm × 1.43 mm footprint, surface-mount, RoHS-compliant, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | CMOS-compatible push-pull digital output; sinks/sours ≥2.5 mA at 5 V with VOL ≤ 0.4 V, VOH ≥ 4.6 V. |
| 2 (−IN) | Inverting Input | Differential input node; accepts voltages from −0.3 V to VCC + 0.3 V; 0.04 pA bias current minimizes divider error. |
| 3 (GND) | Ground Reference | Power return path; must be low-impedance connection to minimize noise coupling into high-Z inputs. |
| 4 (+IN) | Non-inverting Input | Differential input node; identical rail-to-rail range and bias current as −IN; used for threshold comparison against sensed signal. |
| 5 (VCC) | Positive Supply | Single-supply input; supports 2.7–15 V; internal regulation not required; decoupling capacitor recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Enables direct interface to sensors operating at GND or VCC, eliminating input voltage dividers or level-shift amplifiers. |
| Push-pull output | Drives CMOS/TTL loads directly; eliminates need for external pull-up resistors, saving PCB space and power in portable designs. |
| 7 μA supply current | Extends operational lifetime in battery-critical applications such as smoke detectors, wearable health monitors, and remote sensors. |
| 5 mV input offset (NAI grade) | Supports accurate voltage monitoring at ±25 mV thresholds, suitable for Li-ion cell under-voltage lockout or regulated power supply OK detection. |
| SOT-23-5 footprint | 3.05 mm × 3.00 mm area fits within PCMCIA Type III height constraint (1.43 mm max), enabling integration into ultra-thin modules. |
Applications
| Battery Voltage Monitoring | Optical Sensor Interface |
|---|---|
|
Use Scenario: Detecting end-of-discharge in single-cell Li-ion (2.7–4.2 V) or alkaline (0.9–1.5 V/cell) batteries for portable medical devices. IC Role / Device Role / Timing Role: Threshold comparator comparing battery voltage against precision reference; asserts low-power shutdown signal when voltage drops below 2.8 V. Use Value: 5 mV offset and rail-to-rail input ensure accurate trip point at 2.8 V even as supply sags to 2.7 V; 7 μA current prevents self-discharge during standby. |
Use Scenario: Converting analog output from ambient light sensor (e.g., TEMT6000) into digital on/off signal for display backlight control. IC Role / Device Role / Timing Role: Analog-to-digital threshold detector; non-inverting input tied to sensor output, inverting input to adjustable reference; output drives MCU GPIO. Use Value: 0.04 pA input bias avoids loading high-impedance phototransistor output; rail-to-rail input accommodates sensor swing from 0.1 V to VCC−0.1 V. |
| PCMCIA Card Status Detection | Zero-Crossing Detection |
|
Use Scenario: Sensing insertion/removal of PCMCIA cards in legacy industrial laptops by detecting card detect switch closure to ground. IC Role / Device Role / Timing Role: Digital input conditioner; compares switch voltage (0 V or open-circuit) against mid-rail reference to generate clean logic-level signal. Use Value: SOT-23-5 height (1.43 mm) fits within PCMCIA Type III mechanical envelope; push-pull output drives FPGA input without pull-up, simplifying layout. |
Use Scenario: Detecting AC line zero crossings in isolated power supplies or motor controllers using resistive divider from mains. IC Role / Device Role / Timing Role: Precision zero-crossing comparator; inverting input grounded, non-inverting input connected to attenuated AC waveform; output triggers timing logic. Use Value: Input common-mode range extends 0.3 V below GND, allowing safe comparison of negative half-cycles without level-shifting; low input current prevents divider loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC7221AIM5X/NOPB | Same SOT-23-5 package and rail-to-rail input, but open-drain output; requires external pull-up; 15 μA supply current. | Used where mixed-voltage logic interfacing (e.g., 3.3 V comparator driving 5 V bus) or wired-OR functionality is needed. | Select LMC7221AIM5X/NOPB only if open-drain behavior is required; otherwise LMC7211AIM5 saves BOM cost and layout complexity. |
| TLV3701DBVR | Similar SOT-23-5, rail-to-rail input, push-pull output; 1 μA supply current; 360 ns propagation delay; 3 mV offset. | Better suited for ultra-low-power wake-up circuits (<1 μA sleep current) and higher-speed threshold detection (e.g., fast overvoltage protection). | Choose TLV3701DBVR when sub-μA quiescent current or <400 ns response is mandatory; LMC7211AIM5 remains optimal for cost-sensitive, general-purpose 5 mV-grade detection. |
Compared with LMC7221AIM5X/NOPB and TLV3701DBVR, the LMC7211AIM5 delivers the best balance of proven reliability, 5 mV offset accuracy, and push-pull simplicity for mainstream portable electronics-without requiring external components or sacrificing supply voltage flexibility.
Availability
LMC7211AIM5 is available at Aetrix Electronics and suitable for battery voltage monitoring, optical sensor interface, PCMCIA status detection, and zero-crossing detection requiring stable component supply across industrial, medical, and consumer portable designs.
Supply support for LMC7211AIM5 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 ICs, embedded processors, and system solutions for industrial, automotive, and personal electronics markets.
The LMC7211AIM5 belongs to TI's precision micropower comparator family, designed specifically for space-constrained, battery-operated applications demanding rail-to-rail input, ultra-low supply current, and robust single-supply operation.
FAQ
What is the input offset voltage specification for LMC7211AIM5?
The LMC7211AIM5 is the 5 mV grade (LMC7211-NAI) device, with maximum input offset voltage of 5 mV at 25°C and 2.7 V supply. This value is confirmed by TI's official datasheet SNOS746G and part marking "C00A" on the SOT-23-5 package. The offset remains stable across temperature, with a drift of only 1.0 μV/°C at 5 V supply.
Does LMC7211AIM5 support true rail-to-rail input operation?
Yes, the LMC7211AIM5 supports input voltages from −0.3 V to VCC + 0.3 V - exceeding both supply rails by 300 mV. This is verified in Section 4.3 and 4.4 of the datasheet under CMVR (Common-Mode Voltage Range) specifications. It enables direct sensing of signals at ground or VCC, such as current-sense resistor voltages or power supply monitoring.
What is the maximum supply voltage for LMC7211AIM5?
The absolute maximum supply voltage (VCC − GND) for LMC7211AIM5 is 16 V, with recommended operating range of 2.7 V to 15 V. Electrical characteristics are fully specified at 2.7 V, 5 V, and 15 V per Sections 4.3–4.4. Operation above 15 V is not characterized and may compromise reliability or parametric performance.
Can LMC7211AIM5 drive an LED directly?
Yes, the LMC7211AIM5 push-pull output can sink up to 45 mA (typical) and source up to 30 mA, making it capable of directly driving small indicator LEDs. At 5 V supply, VOL is ≤ 0.4 V at 5 mA load, ensuring sufficient forward voltage margin for red/green LEDs. Its 1.43 mm height also allows placement in tight LED indicator zones on compact PCBs.
Is LMC7211AIM5 pin-compatible with other comparators in SOT-23-5?
No - LMC7211AIM5 uses a non-standard pinout: Pin 1 = OUT, Pin 2 = −IN, Pin 3 = GND, Pin 4 = +IN, Pin 5 = VCC. This differs from industry-standard comparators like TLV3701 (Pin 1 = VCC, Pin 2 = −IN, Pin 3 = +IN, Pin 4 = GND, Pin 5 = OUT). PCB layout must follow TI's documented SOT-23-5 top view; swapping without verification risks functional failure.
LMC7211AIM5 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:
- 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
- :
- SOT-23-5
LMC7211AIM5 FAQ
1.How can I place an order for LMC7211AIM5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7211AIM5 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 LMC7211AIM5 reliable?
The price and inventory of LMC7211AIM5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7211AIM5 is usually 5 days.
3.What payment methods are accepted for LMC7211AIM5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7211AIM5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7211AIM5?
LMC7211AIM5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7211AIM5 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 LMC7211AIM5?
For technical support, including LMC7211AIM5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7211AIM5 requirements.
6.How does Aetrix verify that LMC7211AIM5 is sourced from the original manufacturer or authorized distributors?
All LMC7211AIM5 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 LMC7211AIM5 meets industry standards.
7.What is the process for return or replacement of LMC7211AIM5?
All LMC7211AIM5 units undergo pre-shipment inspection (PSI). If there is an issue with LMC7211AIM5, 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 LMC7211AIM5 part is unused and in its original packaging.
Return procedure for LMC7211AIM5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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