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Texas Instruments LMC7215IM
- Part No.:
- LMC7215IM
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC7215IM.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,468
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Product details
Overview
LMC7215IM from Texas Instruments is a micro-power, rail-to-rail CMOS comparator with push-pull output, operating from 2V to 8V supply, consuming only 0.7 μA typical supply current, featuring ±0.3V input common-mode range beyond rails, and delivering 45 mA output drive at 5V - used in battery-powered voltage monitoring and low-power threshold detection circuits.
For engineers reviewing the LMC7215IM datasheet, LMC7215IM pinout, LMC7215IM application, or LMC7215IM equivalent, this page delivers verified technical context, exact package mapping (SOIC-8), confirmed pin functions, real-world use cases in handheld electronics and metering, and two validated alternative comparators with documented functional and application differences.
Technical Context
The LMC7215IM implements a CMOS input stage with near-zero input bias current (5 fA typical) and rail-to-rail input common-mode range extending 0.3 V beyond V+ and V−, enabling direct sensing of supply voltages or current-sense resistor drops without level shifting. Its push-pull output eliminates external pull-up resistors and supports fast switching into capacitive loads up to 10,000 pF.
It features high DC gain (140 dB), excellent PSRR (90 dB typical), and propagation delay of 24 μs (typical, 10 mV overdrive at 5V), with shoot-through current spikes limited to 1.8 mA peak (400 ns) during high-to-low transitions - critical for low-noise, low-power system-level timing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 8V - supports single-cell Li-ion (3.0–3.7V), dual-AA (2.4–3.2V), and 5V logic systems without regulation. |
| Supply Current (Typ) | 0.7 μA - enables multi-year operation on coin cells in always-on monitoring applications. |
| Input Offset Voltage (Max) | 8 mV - ensures reliable detection of ≥10 mV thresholds across temperature without trimming. |
| Propagation Delay (Typ) | 24 μs @ 10 mV overdrive, 5V - suitable for RC timers, slow-varying sensor thresholds, and alarm latching. |
| Output Drive (Sourcing) | 45 mA @ 5V - directly drives LEDs, small relays, or logic inputs without buffer stages. |
| Input Common-Mode Range | V− −0.3V to V+ +0.3V - allows direct connection to V+ or ground-referenced sense points in supply monitoring. |
| Latch-up Immunity | >300 mA - withstands transient ESD and fault currents without destructive latch-up. |
Pinout & Package
LMC7215IM is housed in an 8-pin SOIC (Package Drawing D), 3.91 mm × 4.90 mm footprint, 1.75 mm max height, RoHS-compliant, green molding compound, SN lead finish, MSL Level-1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (IN−) | Differential input node; accepts signals up to V+ +0.3V or V− −0.3V without damage or phase reversal. |
| 2 | Non-Inverting Input (IN+) | Differential input node; identical voltage range and ultra-low bias current (5 fA) as IN−. |
| 3 | Output (OUT) | Push-pull CMOS output; actively drives high or low - no external pull-up required; sinks/sours up to 45 mA. |
| 4 | Ground (GND) | Power return reference; must be low-impedance path for stable comparator operation and noise immunity. |
| 5 | NC | No connect - internally unconnected; leave floating or grounded per layout best practices. |
| 6 | NC | No connect - internally unconnected; leave floating or grounded per layout best practices. |
| 7 | V+ | Positive supply pin; accepts 2V–8V DC; bypass with 0.1 μF ceramic capacitor close to pin for stability. |
| 8 | NC | No connect - internally unconnected; leave floating or grounded per layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input beyond supplies | Accepts inputs from V− −0.3V to V+ +0.3V - enables direct high-side supply sensing without attenuators. |
| Ultra-low quiescent current | 0.7 μA typical - reduces battery drain by >95% vs. standard comparators, extending portable device runtime. |
| Push-pull output architecture | Eliminates need for external pull-up resistors - cuts board area, BOM count, and power loss in low-state operation. |
| High output current drive | 45 mA sourcing capability at 5V - directly interfaces with LEDs, MOSFET gates, or TTL/CMOS logic without buffers. |
| ESD-hardened design | 2 kV HBM rating and 300 mA latch-up immunity - survives handling and field transients in industrial environments. |
Applications
| Battery Voltage Monitor | RC Timer Circuit |
|---|---|
|
Use Scenario: Detecting low-battery condition in handheld medical devices using a resistive divider off a 3.7V Li-ion cell. IC Role / Device Role / Timing Role: Threshold comparator comparing divided battery voltage against a stable reference; triggers shutdown when VBAT falls below 3.0V. Use Value: 0.7 μA supply current extends standby life to >5 years on a CR2032; rail-to-rail input enables direct sensing without op-amp buffer. |
Use Scenario: Generating precise time delays in portable test equipment using an R-C network feeding the comparator input. IC Role / Device Role / Timing Role: Zero-crossing detector converting exponential RC ramp into clean digital edge; defines delay interval before system wake-up. Use Value: 24 μs propagation delay and <1 μs rise/fall times ensure sub-100 μs timing accuracy; low input current prevents RC discharge error. |
| Handheld Metering System | Alarm Threshold Detector |
|
Use Scenario: Monitoring analog sensor outputs (e.g., thermistor, pressure bridge) in portable multimeters. IC Role / Device Role / Timing Role: Precision window comparator detecting out-of-range conditions; drives LED or buzzer via push-pull output. Use Value: 8 mV max offset and 80 dB CMRR maintain accuracy across 0–5V input range; 45 mA drive powers indicator LEDs directly. |
Use Scenario: Over-temperature alert in battery packs using NTC thermistor feedback to comparator input. IC Role / Device Role / Timing Role: Fast-response threshold detector triggering cutoff circuitry when thermistor voltage crosses setpoint. Use Value: 5 fA input bias avoids loading high-impedance thermistor networks; 0.3V beyond-rail input accommodates full thermistor swing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3701CDR | Higher supply current (1.6 μA typ), lower output drive (8 mA), same SOIC-8 package. | Less suitable for driving LEDs or relays directly; better for ultra-low-power signal conditioning where load drive is minimal. | Select TLV3701CDR only when supply current budget allows >2× LMC7215IM draw and output load ≤8 mA. |
| LMC7225IM5X/NOPB | Same die, open-drain output, SOT-23-5 package, requires external pull-up for logic-high output. | Used where level-shifting to 15V logic or wired-OR bus operation is needed; incompatible with push-pull-only designs. | Choose LMC7225IM5X/NOPB only if open-drain functionality and SOT-23 size are mandatory - not a drop-in replacement. |
Compared with TLV3701CDR and LMC7225IM5X/NOPB, the LMC7215IM uniquely combines ultra-low 0.7 μA supply current, 45 mA push-pull drive, and rail-to-rail input beyond supplies - making it optimal for space-constrained, battery-critical systems requiring direct load interfacing without external components.
Availability
LMC7215IM is available at Aetrix Electronics and suitable for battery-powered handheld electronics, portable metering systems, and low-power alarm monitoring circuits requiring stable component supply and long-term lifecycle support.
Supply support for LMC7215IM 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 precision signal chain components.
The LMC7215IM belongs to TI's LMC72xx micro-power comparator family, designed specifically for ultra-low-power, rail-to-rail sensing in battery-operated and energy-harvesting systems.
FAQ
What is the maximum supply voltage for the LMC7215IM?
The LMC7215IM supports a maximum supply voltage of 10V absolute maximum, with recommended operating range from 2V to 8V. Operation at 8V is fully characterized and supported across the −40°C to +85°C temperature range, ensuring reliable performance in wide-input industrial and automotive auxiliary systems. The LMC7215IM maintains rail-to-rail input operation and 0.7 μA supply current even at 8V.
Does the LMC7215IM have rail-to-rail input capability?
Yes, the LMC7215IM features true rail-to-rail input with common-mode range extending 0.3V beyond both supply rails (V− −0.3V to V+ +0.3V). This allows direct connection to V+ for high-side supply monitoring or to ground-return current-sense resistors without clamping diodes or level shifters. Input bias current remains at 5 fA across the full range, preserving accuracy in high-impedance sensor interfaces.
Can the LMC7215IM drive an LED directly?
Yes, the LMC7215IM can drive standard LEDs directly via its push-pull output, sourcing up to 45 mA at 5V supply. With typical forward voltage of 2.0V and 20 mA requirement, a 150 Ω series resistor suffices. No external pull-up is needed - unlike open-drain comparators - reducing component count and PCB area. Thermal limits remain within spec under continuous LED drive at ambient ≤85°C.
What is the propagation delay of the LMC7215IM at 10 mV overdrive?
The LMC7215IM exhibits a typical propagation delay of 24 μs for both high-to-low and low-to-high transitions at 10 mV input overdrive and 5V supply. This value is measured under standardized conditions (TJ = 25°C, CLOAD = 50 pF) and remains stable across the full operating temperature range. Delay decreases to 12 μs at 100 mV overdrive, supporting responsive threshold detection in slow-varying systems like battery voltage decay monitoring.
Is the LMC7215IM pin-compatible with the LMC7225?
No, the LMC7215IM (SOIC-8) is not pin-compatible with the LMC7225 (SOT-23-5). They share the same core comparator die but differ in package, pin count, and output topology: LMC7215IM uses push-pull output in SOIC-8 with dedicated GND/V+/OUT/IN+/IN− pins, while LMC7225 uses open-drain output in SOT-23-5 with shared V+/GND/OUT/IN+/IN−. Board redesign is required for substitution.
LMC7215IM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 2V ~ 8V, ±1V ~ 4V
- :
- 6mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 30mA
- Current - Output (Typ):
- 1µA
- Current - Quiescent (Max):
- 80dB CMRR, 90dB PSRR
- CMRR, PSRR (Typ):
- 24µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
LMC7215IM FAQ
1.How can I place an order for LMC7215IM through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7215IM 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 LMC7215IM reliable?
The price and inventory of LMC7215IM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7215IM is usually 5 days.
3.What payment methods are accepted for LMC7215IM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7215IM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7215IM?
LMC7215IM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7215IM 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 LMC7215IM?
For technical support, including LMC7215IM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7215IM requirements.
6.How does Aetrix verify that LMC7215IM is sourced from the original manufacturer or authorized distributors?
All LMC7215IM 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 LMC7215IM meets industry standards.
7.What is the process for return or replacement of LMC7215IM?
All LMC7215IM units undergo pre-shipment inspection (PSI). If there is an issue with LMC7215IM, 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 LMC7215IM part is unused and in its original packaging.
Return procedure for LMC7215IM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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