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NXP Semiconductors NCX2222GFX
- Part No.:
- NCX2222GFX
- Manufacturer:
- NXP Semiconductors
- Category:
- Comparators
- Package:
- 8-XFDFN
- Datasheet:
-
NCX2222GFX.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,332
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Product details
Overview
NCX2222GFX from NXP Semiconductors is a dual, low-voltage, low-power comparator with open-drain outputs, designed for rail-to-rail input/output operation across 1.3 V to 5.5 V supply rails. It delivers 5 µA typical supply current per comparator, 0.8 µs typical propagation delay at 20 mV overdrive, and internal 9 mV hysteresis - enabling precise threshold detection in battery-powered portable electronics.
For engineers reviewing the NCX2222GFX datasheet, NCX2222GFX pinout, NCX2222GFX application, or NCX2222GFX equivalent, key selection criteria include ultra-low quiescent current, guaranteed 1.3 V operation, open-drain output compatibility with mixed-voltage logic translation, and thermal-enhanced XSON8 packaging for space-constrained PCB layouts.
Technical Context
The NCX2222GFX integrates two independent comparators with N-channel open-drain output stages, each sinking up to 5 mA while maintaining rail-to-rail common-mode input range (VEE to VCC) and no phase inversion under overdriven inputs. Its internal hysteresis (6–13 mV) ensures noise-immune switching without external components.
It operates across −40 °C to +85 °C with supply rejection of 45–80 dB and common-mode rejection of 70 dB, supporting stable performance in noisy industrial and portable environments where supply ripple and EMI are present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.3 V to 5.5 V functional operation - enables direct use in single-cell Li-ion (2.7–4.2 V), 3.0 V, and 5.0 V systems without level shifting. |
| Supply current per comparator | 5.0 µA typical - reduces battery drain in always-on monitoring circuits such as wake-up detectors and low-power alarms. |
| Propagation delay | 0.8 µs typical at 20 mV overdrive - supports fast response in zero-crossing detection and edge-triggered timing applications. |
| Hysteresis voltage | 6–13 mV (typ. 9 mV) - provides built-in noise immunity eliminating need for external positive feedback resistors. |
| Input offset voltage | ±30 mV max (−40 °C to +85 °C) - ensures reliable threshold accuracy in precision sensing and reference comparison. |
| Output configuration | Open-drain N-channel - allows flexible pull-up to any voltage rail ≤5.5 V, enabling logic-level translation between 1.8 V, 3.3 V, and 5 V domains. |
| ESD protection | HBM >1500 V, CDM >1000 V - enhances robustness during board assembly and end-user handling in handheld devices. |
Pinout & Package
NCX2222GFX uses the XSON8 package (SOT1089): 1.35 mm × 1.0 mm × 0.5 mm body, 8-terminal, leadless, thermally enhanced layout with pin 1 indicator in lower-left corner below marking code "gb".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Comparator 1 output | Open-drain N-channel sink - requires external pull-up; compatible with I²C bus and mixed-voltage logic interfaces. |
| IN1− | Comparator 1 inverting input | Differential input node - accepts rail-to-rail signals from sensors or reference dividers without clamping diodes. |
| IN1+ | Comparator 1 non-inverting input | Differential input node - supports precise threshold setting with low input bias current (1 pA typical). |
| VEE | Negative supply / ground reference | Reference for all inputs and outputs; substrate pad must remain floating or tied to VEE - not a power plane connection. |
| IN2+ | Comparator 2 non-inverting input | Independent high-impedance input - enables dual-threshold detection (e.g., window comparator with external resistors). |
| IN2− | Comparator 2 inverting input | Independent high-impedance input - supports differential sensing or inverted logic configurations. |
| OUT2 | Comparator 2 output | Open-drain N-channel sink - electrically isolated from OUT1; supports independent pull-up voltages per channel. |
| VCC | Positive supply | Primary power rail - supplies both comparators; supports operation down to 1.3 V for ultra-low-power wake-up functions. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.1 V beyond VEE and VCC - eliminates need for input biasing networks in single-supply sensor interfaces. |
| No phase inversion on overdrive | Guaranteed behavior across full temperature and voltage range - prevents false triggering when inputs exceed supply rails. |
| Internal hysteresis | 6–13 mV typ. - suppresses chatter in noisy environments (e.g., motor control feedback, battery voltage monitoring). |
| Low propagation delay vs. supply current trade-off | 0.8 µs at 5 µA - achieves faster response than comparable micropower comparators (e.g., TLV3701) without increasing quiescent draw. |
| Thermally enhanced XSON8 package | 0.5 mm profile with exposed die pad - improves thermal resistance for sustained operation in compact enclosures. |
Applications
| Cellular Telephone Power Monitoring | Security System Intrusion Detection |
|---|---|
Use Scenario: Monitoring battery voltage and charger presence in GSM/UMTS handsets with tight PCB area constraints. IC Role / Device Role / Timing Role: Dual comparator detects low-battery warning threshold and charger insertion event using separate reference voltages. Use Value: Ultra-low 5 µA supply current extends standby time; open-drain outputs interface directly to 1.8 V baseband processor GPIOs. |
Use Scenario: Detecting door/window contact closure and motion sensor output in wireless alarm panels powered by coin-cell batteries. IC Role / Device Role / Timing Role: One comparator monitors magnetic reed switch state; second monitors PIR sensor output with hysteresis to reject EMI-induced glitches. Use Value: 1.3 V minimum operation enables use with depleted alkaline cells; rail-to-rail inputs accept direct sensor outputs without biasing. |
| Personal Digital Assistant (PDA) Wake-Up Logic | USB-C Port Voltage Translation |
Use Scenario: Enabling instant-on functionality via button press or ambient light change in legacy PDAs with 3.3 V logic and 1.8 V microcontroller. IC Role / Device Role / Timing Role: Comparator 1 triggers wake signal on button press; Comparator 2 monitors photodiode output for auto-dimming. Use Value: Dual independent channels reduce component count; 0.8 µs propagation delay ensures sub-millisecond wake latency. |
Use Scenario: Translating CC line logic levels between USB-C controller (3.3 V) and legacy 5 V host-side power delivery circuitry. IC Role / Device Role / Timing Role: Open-drain output pulled to 5 V converts 3.3 V logic HIGH to 5 V-compatible signal for PD communication handshake. Use Value: Eliminates need for discrete MOSFET translators; internal hysteresis prevents oscillation during slow-rising CC line transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3702IDR | Higher supply current (1 µA vs. 5 µA), wider offset range (±5 mV), SOIC-8 only | Not suitable for <1.8 V operation; lacks 1.3 V guarantee and XSON8 footprint | Select when higher speed (1.5 µs) and tighter offset are prioritized over battery life and board space. |
| MAX9062ASA+ | Higher supply current (12 µA), rail-to-rail output (push-pull), ±15 mV offset, SOIC-8 | Requires external pull-up for open-drain emulation; no 1.3 V rating | Choose when push-pull output is required for driving capacitive loads or when higher drive strength (8 mA) justifies increased power. |
Compared with TLV3702IDR and MAX9062ASA+, the NCX2222GFX uniquely combines 1.3 V operation, 5 µA quiescent current, and XSON8 packaging - making it optimal for miniaturized, long-life portable devices where supply voltage headroom and PCB area are critical constraints.
Availability
NCX2222GFX is available at Aetrix Electronics and suitable for cellular telephones, security system sensors, personal digital assistants, USB-C interface logic, and battery voltage monitoring requiring stable component supply across automotive-grade temperature ranges and extended production lifecycles.
Supply support for NCX2222GFX 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The NCX2222GFX belongs to NXP's low-power analog comparator product line, engineered specifically for energy-constrained portable electronics where minimal supply current, wide voltage operation, and small-footprint packaging are essential design requirements.
FAQ
What is the minimum operating voltage for the NCX2222GFX?
The NCX2222GFX is guaranteed to operate down to 1.3 V across its full temperature range (−40 °C to +85 °C), making it suitable for single-cell lithium or alkaline battery applications where voltage sags below 1.8 V during discharge. This specification is verified per NXP's recommended operating conditions table and distinguishes NCX2222GFX from comparators rated only for 1.6 V minimum.
Does the NCX2222GFX require external hysteresis resistors?
No, the NCX2222GFX includes internal hysteresis of 6–13 mV (typ. 9 mV), which provides sufficient noise immunity for most threshold-detection applications without external components. This eliminates board space and BOM cost associated with positive feedback networks, and is confirmed in Table 6 (Static Characteristics) of the official NXP datasheet Rev. 1.
Can the NCX2222GFX outputs drive a 5 V pull-up while powered from 3.3 V?
Yes - the NCX2222GFX open-drain outputs are rated for output voltages up to 7.0 V (absolute maximum) and function correctly with pull-up voltages higher than VCC, enabling seamless logic-level translation (e.g., 3.3 V input → 5 V output). This capability is explicitly supported in the "Output stage" section (13.2) and limiting values table (Table 4) of the datasheet.
What is the thermal pad on the NCX2222GFX package used for?
The exposed thermal pad on the NCX2222GFX (SOT1089) is attached to the die substrate via conductive die attach material. It has no electrical function and must remain electrically floating or be connected to VEE - soldering it to ground or another net is not required and may compromise thermal performance if improperly implemented.
How does the NCX2222GFX handle input signals exceeding the supply rails?
The NCX2222GFX guarantees no phase inversion when inputs exceed VEE or VCC - a critical feature for robust operation in real-world systems with transient overvoltage or unbuffered sensor outputs. This behavior is specified in Section 2 (Features and benefits) and validated across −40 °C to +85 °C per the functional description in Section 13.1.
NCX2222GFX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 8-XFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.3V ~ 5.5V
- :
- 30mV @ 5.5V
- Voltage - Input Offset (Max):
- 1pA
- Current - Input Bias (Max):
- 68mA
- Current - Output (Typ):
- 5µA
- Current - Quiescent (Max):
- 70dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 0.8µs
- Propagation Delay (Max):
- 9mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-XSON, SOT1089 (1.35x1)
NCX2222GFX FAQ
1.How can I place an order for NCX2222GFX through Aetrix?
Please submit a Request for Quotation (RFQ) for NCX2222GFX 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 NCX2222GFX reliable?
The price and inventory of NCX2222GFX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCX2222GFX is usually 5 days.
3.What payment methods are accepted for NCX2222GFX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCX2222GFX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCX2222GFX?
NCX2222GFX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCX2222GFX 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 NCX2222GFX?
For technical support, including NCX2222GFX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCX2222GFX requirements.
6.How does Aetrix verify that NCX2222GFX is sourced from the original manufacturer or authorized distributors?
All NCX2222GFX 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 NCX2222GFX meets industry standards.
7.What is the process for return or replacement of NCX2222GFX?
All NCX2222GFX units undergo pre-shipment inspection (PSI). If there is an issue with NCX2222GFX, 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 NCX2222GFX part is unused and in its original packaging.
Return procedure for NCX2222GFX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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