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LMC7221BIMX/NOPB
Texas Instruments
IC COMPARATOR 1 GEN PUR 8SOIC
105561 Pcs New Original In Stock
Comparator General Purpose Open-Drain 8-SOIC
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5.0 / 5.0
- (85 Ratings)
LMC7221BIMX/NOPB
Product Overview
1324799
DiGi Electronics Part Number
LMC7221BIMX/NOPB-DGManufacturer
Texas Instruments
LMC7221BIMX/NOPB
Description
IC COMPARATOR 1 GEN PUR 8SOICInventory
105561 Pcs New Original In Stock
Comparator General Purpose Open-Drain 8-SOIC
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
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LMC7221BIMX/NOPB Technical Specifications
Category
Linear, Comparators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Type
General Purpose
Number of Elements
1
Output Type
Open-Drain
Voltage - Supply, Single/Dual (±)
2.7V ~ 15V, ±1.35V ~ 7.5V
Voltage - Input Offset (Max)
15mV @ 5V
Current - Input Bias (Max)
0.04pA @ 5V
Current - Output (Typ)
30mA
Current - Quiescent (Max)
14µA
CMRR, PSRR (Typ)
75dB CMRR, 80dB PSRR
Propagation Delay (Max)
10µs
Hysteresis
-
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (0.154", 3.90mm Width)
Mounting Type
Surface Mount
Supplier Device Package
8-SOIC
Base Product Number
LMC7221
Datasheet & Documents
HTML Datasheet
LMC7221BIMX/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
LMC7221BIMX/NOPBTR
LMC7221BIMXNOPB
LMC7221BIMX/NOPBDKR
-LMC7221BIMX/NOPBCT-DG
*LMC7221BIMX/NOPB
2156-LMC7221BIMX/NOPB-TI
LMC7221BIMX/NOPBCT
-LMC7221BIMX/NOPBCT
TEXTISLMC7221BIMX/NOPB
LMC7221BIMX/NOPB-DG
LMC7221BIMX-NDR
Standard Package
2,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Der Versand war extrem schnell, und die Produkte sind langlebig und zuverlässig.
de desembre 02, 2025
Die zuverlässige Versandzeit und die langlebige Qualität der Produkte zeichnen DiGi Electronics aus.
de desembre 02, 2025
I trust DiGi Electronics for their dependable solutions that never let me down during critical moments.
de desembre 02, 2025
DiGi Electronics’ punctuality in delivery has consistently supported our tight project timelines.
de desembre 02, 2025
Their post-purchase customer service is attentive and professional, making me a loyal customer.
de desembre 02, 2025
The product quality is exceptional, and the delivery was impressively rapid.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the LMC7221BIMX/NOPB in a battery-powered sensor circuit with a 3.3V supply?
When integrating the LMC7221BIMX/NOPB into a 3.3V battery-powered sensor system, a key risk is ensuring stable operation under varying load and temperature conditions despite its 15mV max input offset voltage. At low signal differentials, this offset can cause incorrect triggering, so designers should use hysteresis via external feedback or ensure the signal margin exceeds 30mV. Additionally, while the 14µA quiescent current supports low-power operation, the open-drain output requires a pull-up resistor, which adds leakage paths—use high-value resistors (e.g., 100kΩ) or switch them dynamically to minimize drain. Verify performance across the full -40°C to 85°C range, especially in outdoor deployments.
Can the LMC7221BIMX/NOPB replace the LM393 in a 5V industrial monitoring circuit, and what layout considerations are needed?
Yes, the LMC7221BIMX/NOPB can replace the LM393 in 5V industrial circuits, offering lower input bias current (0.04pA vs. 20nA) and better PSRR (80dB), improving noise immunity. However, both have open-drain outputs, so ensure the pull-up voltage and resistor value are compatible. A critical design consideration is layout: route input traces away from noisy digital lines and use a solid ground plane to leverage the LMC7221BIMX/NOPB’s 75dB CMRR effectively. Also, add a 100nF ceramic decoupling capacitor close to the V+ pin, as the LMC7221BIMX/NOPB is more sensitive to supply transients due to its CMOS input stage.
How does the input common-mode range of the LMC7221BIMX/NOPB affect its use in rail-to-rail sensing applications?
The LMC7221BIMX/NOPB does not support rail-to-rail input common-mode voltage; its range is typically from 0.1V above V– to 1.5V below V+. This limitation means it cannot accurately compare signals near the positive rail—critical in applications like low-side current sensing or battery voltage monitoring. For example, at 5V supply, inputs above ~3.5V may cause phase reversal or incorrect output. To mitigate, use voltage dividers to scale signals into the valid range or consider alternatives like the TLV1701 for true rail-to-rail input capability when detecting near-V+ events.
What reliability concerns should be addressed when using the LMC7221BIMX/NOPB in automotive environments with wide temperature swings?
Although the LMC7221BIMX/NOPB is rated for -40°C to 85°C, automotive under-hood environments can exceed 85°C, leading to increased input offset voltage and propagation delay beyond 10µs. Designers must derate performance or use local thermal management. Its open-drain output driving inductive loads (e.g., relays) risks voltage spikes—always use a flyback diode. Additionally, while the device is MSL1 and moisture-resistant, conformal coating is recommended in high-humidity applications. Consider long-term drift: the input offset may vary over time under thermal stress, so validate with extended burn-in for safety-critical uses.
How does the LMC7221BIMX/NOPB compare to the MAX9025 in portable medical devices requiring low power and high precision?
The LMC7221BIMX/NOPB offers ultra-low input bias current (0.04pA) suitable for high-impedance sensor interfaces like ECG electrodes, outperforming the MAX9025’s 0.5pA. Both have low quiescent current (~14µA), but the LMC7221BIMX/NOPB’s higher input offset (15mV vs. 3mV for MAX9025) can reduce accuracy in low-differential signals. For medical applications requiring tighter thresholds, the MAX9025 may be preferable. However, the LMC7221BIMX/NOPB provides better PSRR (80dB), improving performance in noisy digital environments. Mitigate the offset risk by calibrating during manufacturing or adding external hysteresis to prevent oscillations near the trip point.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
LMC7221BIMX/NOPB CAD Models
Texas Instruments LMC7221BIMX/NOPB PCB symbols & footprints
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