My Inquiry
My Account
Texas Instruments LMC7225IM5
- Part No.:
- LMC7225IM5
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMC7225IM5.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,545
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMC7225IM5 from Texas Instruments is a micro-power, rail-to-rail CMOS comparator with open-drain output, designed for ultra-low-power battery-operated systems. It delivers 0.7 μA typical supply current, operates from 2V to 8V supply, supports input common-mode voltage beyond rails (−0.3 V to 5.3 V at VS = 5 V), and drives loads up to 15 V via external pull-up. It is used in handheld electronics for precision threshold detection with minimal quiescent power.
For engineers reviewing the LMC7225IM5 datasheet, LMC7225IM5 pinout, LMC7225IM5 application, or LMC7225IM5 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated SOT-23 pin functions, application-specific implementation guidance, and two confirmed alternative comparators with documented functional and interface differences.
Technical Context
The LMC7225IM5 implements a high-gain CMOS comparator core (140 dB typical voltage gain) with rail-to-rail input stage enabling operation across full supply range and beyond-critical for single-supply sensing. Its open-drain output requires an external pull-up resistor to define logic-high level and enables level-shifting up to 15 V, unlike push-pull variants.
It features exceptionally low input bias current (5 fA typical), near-zero input offset drift (2 μV/°C), and robust latch-up resistance (>300 mA). Propagation delay is 24 μs (high-to-low) and 29 μs (low-to-high) at 10 mV overdrive and 5 V supply-optimized for RC timers and alarm circuits where timing predictability matters more than speed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 0.7 μA typical - enables multi-year battery life in always-on monitoring circuits without duty cycling. |
| Supply Voltage Range | 2 V to 8 V - supports direct operation from single Li-ion, dual alkaline, or regulated 3.3 V/5 V rails. |
| Input Common-Mode Range | −0.3 V to 5.3 V at VS = 5 V - allows direct sensing of VCC or ground-referenced signals without level shifters. |
| Output Type | Open-drain - permits wired-OR logic, I²C-compatible bus interfacing, and level translation to voltages up to 15 V. |
| Propagation Delay | 24 μs (tPHL) / 29 μs (tPLH) @ 10 mV overdrive, 5 V - stable timing for window comparators and slow-slew analog triggers. |
| Input Offset Voltage | 6 mV max - sufficient for millivolt-level threshold detection in metering and battery voltage monitoring. |
| ESD Tolerance | 2 kV HBM - meets basic handling requirements for consumer-grade PCB assembly without special ESD controls. |
Pinout & Package
LMC7225IM5 is housed in a 5-pin SOT-23 package (JEDEC MO-178, TI drawing DBV), measuring 2.9 mm × 1.6 mm × 1.3 mm, with gull-wing leads and pin 1 marked by a dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance node (5 fA bias) accepting rail-to-rail analog signals; no external bias required for single-supply use. |
| 2 (GND) | Ground reference | Return path for supply and output load; must be low-impedance to maintain CMRR >60 dB and avoid noise coupling. |
| 3 (OUT) | Open-drain output | Drains current only; requires external pull-up to define logic-high voltage-enables level shifting and bus arbitration. |
| 4 (IN−) | Inverting input | Matches IN+ in voltage range and impedance; differential input tolerance is ±(VS + 0.3 V). |
| 5 (V+) | Positive supply | Accepts 2 V–8 V; internal regulation not present-supply ripple directly affects propagation delay stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 0.7 μA typical ensures <1 μA system standby current when paired with high-value resistive dividers. |
| Rail-to-rail input with overvoltage tolerance | Inputs operate −0.3 V to VS + 0.3 V-enables direct connection to battery terminals or unregulated supplies without clamping diodes. |
| Open-drain output with 15 V level-shift capability | Supports mixed-voltage interfaces (e.g., 3.3 V logic controlling 12 V relay drivers) using one external resistor. |
| High output sink current | 30 mA max sink capability at 5 V allows direct LED or buzzer drive without buffer transistors. |
| Latch-up immunity | Qualified to withstand 300 mA transient injection-reduces need for input protection in noisy industrial environments. |
Applications
| Battery Voltage Monitor | RC Timer Threshold Detector |
|---|---|
Use Scenario: Detecting low-battery condition in portable medical devices before shutdown. IC Role / Device Role / Timing Role: Comparator compares divided battery voltage against stable reference; open-drain output pulls down MCU wake-up line. Use Value: 0.7 μA quiescent current extends operational life by months; rail-to-rail input eliminates need for charge-pump bias network. |
Use Scenario: Generating precise time delays in energy-harvesting sensor nodes using resistor-capacitor networks. IC Role / Device Role / Timing Role: Compares exponentially rising capacitor voltage to fixed threshold; output triggers ADC sampling or radio wake-up. Use Value: 24–29 μs propagation delay ensures predictable timing at sub-100 kHz frequencies; low input current prevents RC time constant drift. |
| Alarm Circuit Input Stage | Window Comparator Core |
Use Scenario: Monitoring temperature sensor output in smart thermostats for over-temperature alerts. IC Role / Device Role / Timing Role: Compares sensor voltage to upper threshold; open-drain output interfaces directly with 5 V alarm siren driver. Use Value: 15 V level-shift capability enables direct control of higher-voltage peripherals; 6 mV VOS max ensures ≤1°C error at 10 mV/°C sensor gain. |
Use Scenario: Validating analog sensor output stays within safe operating bounds in industrial PLC inputs. IC Role / Device Role / Timing Role: Paired LMC7225IM5 units implement upper/lower thresholds; outputs feed AND gate to assert "in-window" status. Use Value: Matched input specs (CMVR, VOS, PSRR) between units minimize window asymmetry; SOT-23 footprint saves board space vs. SOIC alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3701DBVR | Push-pull output, 1.8 V–16 V supply, 1.2 μA IQ, 350 ns tPD | Not suitable for wired-OR or level-shifting; faster but consumes ~70% more current. | Select TLV3701DBVR only when push-pull drive and nanosecond response are required-and power budget allows. |
| MAX9022AUT+T | Open-drain, 1.6 V–5.5 V supply, 1.5 μA IQ, 3.5 μs tPD, integrated hysteresis | Lower voltage ceiling limits 12 V/15 V level-shift use; hysteresis reduces need for external feedback but fixes hysteresis value. | Choose MAX9022AUT+T for sub-5 V systems needing built-in noise immunity-avoid when >5.5 V pull-up or adjustable hysteresis is needed. |
Compared with TLV3701DBVR and MAX9022AUT+T, the LMC7225IM5 uniquely balances ultra-low IQ, wide supply range, and true 15 V level-shifting-making it optimal for long-life, mixed-voltage, single-supply sensing where speed is secondary to power and flexibility.
Availability
LMC7225IM5 is available at Aetrix Electronics and suitable for battery voltage monitoring, RC timer circuits, alarm systems, and window comparator designs requiring stable component supply across extended production lifecycles.
Supply support for LMC7225IM5 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 and embedded processing solutions, with over 50 years of innovation in precision signal conditioning and low-power IC design.
The LMC7225IM5 belongs to TI's LMC72xx micro-power comparator family, engineered specifically for energy-constrained, single-supply applications such as portable instrumentation, wearables, and remote sensors where every nanoamp counts.
FAQ
What is the maximum allowable supply voltage for the LMC7225IM5?
The LMC7225IM5 has an absolute maximum supply voltage (V+ − V−) rating of 10 V per the datasheet Absolute Maximum Ratings table. Continuous operation above 8 V is not recommended, as ensured electrical performance is specified only up to 8 V. Exceeding 10 V risks permanent damage to the device.
Can the LMC7225IM5 output safely drive a 12 V load?
Yes-the LMC7225IM5 open-drain output can interface with 12 V loads when used with an external pull-up resistor connected to the 12 V rail. The datasheet explicitly states output level-shifting capability up to 15 V, provided the output is not shorted to voltages exceeding 10 V to avoid damage.
Does the LMC7225IM5 require external hysteresis for stable operation?
The LMC7225IM5 does not include internal hysteresis. For noisy input signals or slowly varying thresholds, external positive feedback (e.g., resistor from OUT to IN+) is required to prevent multiple toggling. The datasheet recommends adding hysteresis when input slew rate is below ~10 mV/ms or noise exceeds 1 mV peak-to-peak.
What is the input common-mode voltage range of the LMC7225IM5 at 3.3 V supply?
At VS = 3.3 V, the LMC7225IM5 input common-mode range is specified as −0.2 V (min) to 3.6 V (max) per the Electrical Characteristics table, ensuring reliable operation even when inputs exceed the supply rails-critical for direct battery sensing or ground-referenced current measurement.
Is the LMC7225IM5 RoHS-compliant and lead-free?
Yes-the LMC7225IM5/NOPB variant is RoHS-compliant and lead-free, with "Green (RoHS & no Sb/Br)" eco plan and "SN" lead finish per TI's Packaging Information Addendum. The base part LMC7225IM5 is also RoHS-compliant per TI's standard qualification, though marking and finish details vary by orderable suffix.
LMC7225IM5 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-Drain
- 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):
- 29µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
LMC7225IM5 FAQ
1.How can I place an order for LMC7225IM5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7225IM5 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 LMC7225IM5 reliable?
The price and inventory of LMC7225IM5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7225IM5 is usually 5 days.
3.What payment methods are accepted for LMC7225IM5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7225IM5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7225IM5?
LMC7225IM5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7225IM5 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 LMC7225IM5?
For technical support, including LMC7225IM5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7225IM5 requirements.
6.How does Aetrix verify that LMC7225IM5 is sourced from the original manufacturer or authorized distributors?
All LMC7225IM5 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 LMC7225IM5 meets industry standards.
7.What is the process for return or replacement of LMC7225IM5?
All LMC7225IM5 units undergo pre-shipment inspection (PSI). If there is an issue with LMC7225IM5, 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 LMC7225IM5 part is unused and in its original packaging.
Return procedure for LMC7225IM5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMC7225IM5 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…
