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NXP Semiconductors NCX2222GTX
- Part No.:
- NCX2222GTX
- Manufacturer:
- NXP Semiconductors
- Category:
- Comparators
- Package:
- 8-XFDFN
- Datasheet:
-
NCX2222GTX.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:7,278
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Product details
Overview
The NCX2222 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 per comparator supply current, 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 NCX2222 datasheet, NCX2222 pinout, NCX2222 application, or NCX2222 equivalent, this device supports critical low-power sensing, level translation, and zero-crossing detection where supply headroom is constrained and noise immunity is essential.
Technical Context
The NCX2222 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) and sub-1 µs propagation delay are specified across −40 °C to +85 °C.
It operates functionally from 1.3 V, with full specification guaranteed from 1.6 V, and supports pull-up-based logic-level translation between 1.8 V, 3.3 V, and 5 V domains. ESD robustness exceeds 1500 V HBM and 1000 V CDM, ensuring reliability in handheld and security system environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.3 V to 5.5 V functional; 1.6 V to 5.5 V fully specified - 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 at 25 °C - allows continuous operation in always-on sensor nodes with multi-year battery life. |
| Propagation Delay | 0.8 µs typical at 20 mV overdrive, CL = 15 pF - supports fast response in timing-critical window-detection and pulse-width monitoring. |
| Input Offset Voltage | ±30 mV max over temperature - ensures stable switching thresholds in precision voltage monitoring applications. |
| Hysteresis Voltage | 6–13 mV typical (9 mV at 25 °C) - provides built-in noise immunity without external feedback components. |
| Common-Mode Input Range | VEE to VCC - permits direct sensing of signals referenced to either rail, including ground-referenced AC signals. |
| Output Configuration | Open-drain N-channel - enables wired-OR logic, flexible pull-up voltage selection, and bidirectional level translation. |
Pinout & Package
NCX2222 is available in five leadless or leaded packages: TSSOP8 (SOT505-2), HXSON8 (SOT972-2), XSON8 (SOT833-1 and SOT1089), and XQFN8 (SOT902-2). All variants share identical 8-pin functionality and thermal pad configuration (non-soldered substrate connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Comparator 1 output | Open-drain N-channel drain - requires external pull-up; sinks up to 5 mA to VEE. |
| IN1− | Comparator 1 inverting input | Differential input node with rail-to-rail common-mode range and <1 pA bias current. |
| IN1+ | Comparator 1 non-inverting input | Differential input node supporting overvoltage tolerance up to VCC + 0.5 V. |
| VEE | Negative supply / ground reference | Reference terminal for all inputs and outputs; substrate pad must remain floating or tied to VEE. |
| IN2+ | Comparator 2 non-inverting input | Independent high-impedance input for second sensing channel. |
| IN2− | Comparator 2 inverting input | Independent high-impedance input with same CMRR (70 dB) and PSRR (45–80 dB) as IN1±. |
| OUT2 | Comparator 2 output | Independent open-drain output with identical timing and drive capability as OUT1. |
| VCC | Positive supply | Primary power rail; supports 1.3–5.5 V operation with 250 mW total power dissipation limit. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interface with sensors and logic families across full supply range without external biasing. |
| Internal hysteresis (9 mV typ) | Eliminates need for external positive feedback resistors in noisy environments like alarm triggers or motor commutation sensing. |
| No phase inversion on overdrive | Guarantees predictable output polarity even when inputs exceed supply rails - critical for zero-crossing detection. |
| ESD robustness (HBM >1500 V) | Reduces risk of field failure during handling and integration into consumer handheld devices. |
| −40 °C to +85 °C operating range | Validated performance for industrial and outdoor portable equipment without derating. |
Applications
| Cellular Telephone Power Monitoring | Security System Intrusion Detection |
|---|---|
Use Scenario: Monitoring battery voltage and charger presence in GSM/UMTS handsets with tight PCB space and strict power budgets. IC Role / Device Role / Timing Role: Dual comparator performs low-battery warning (OUT1) and charge-complete flag generation (OUT2) using shared VCC and discrete resistive dividers. Use Value: 5 µA/quiescent current extends standby time; rail-to-rail inputs allow direct sensing of 0–4.2 V Li-ion voltage without level shifters. |
Use Scenario: Detecting tamper events via microswitch closure or PIR sensor output in door/window sensors and motion detectors. IC Role / Device Role / Timing Role: One comparator acts as window detector for analog PIR output; the other monitors supply brownout to prevent false alarms during power dips. Use Value: Internal hysteresis prevents chatter on marginal sensor signals; 1.3 V minimum operation ensures functionality during battery sag. |
| Personal Digital Assistant (PDA) Keypad Scan | Industrial Sensor Interface Module |
Use Scenario: Scanning resistive keypad matrices in legacy PDAs where MCU GPIO count is limited and supply is 3.3 V. IC Role / Device Role / Timing Role: NCX2222 replaces discrete transistor arrays to decode keypresses via voltage divider thresholds on IN1+/IN1− and IN2+/IN2−. Use Value: Open-drain outputs enable wired-OR connection to single MCU interrupt line; 0.8 µs delay ensures responsive key detection. |
Use Scenario: Conditioning analog outputs from thermistors, RTDs, or current-loop transmitters in compact industrial I/O modules. IC Role / Device Role / Timing Role: Configured as high/low limit comparator pair to generate digital fault alerts (e.g., overtemperature or open-wire detection). Use Value: Rail-to-rail inputs accept 0–5 V sensor spans directly; 70 dB CMRR rejects common-mode noise from 4–20 mA loop wiring. |
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 (12 µA/comparator); 1.8 V min supply; push-pull output option available | Requires redesign for open-drain logic OR or level translation; better suited for higher-speed (>1 µs) or rail-specified push-pull interfaces | Select TLV3702IDR only if push-pull outputs or faster propagation (<0.5 µs) are required - not drop-in for NCX2222's ultra-low-power open-drain use cases. |
| MAX9062ASA+ | Lower hysteresis (typ 2 mV); 1.6 V min supply; no guaranteed operation below 1.6 V | Lacks 1.3 V operation margin needed for deep battery discharge monitoring; less noise immunity in EMI-prone security enclosures | Choose MAX9062ASA+ only when hysteresis is externally added and supply never drops below 1.6 V - otherwise NCX2222 provides superior low-voltage resilience. |
Compared with TLV3702IDR and MAX9062ASA+, the NCX2222 uniquely combines 1.3 V operation, 5 µA quiescent current, and factory-trimmed hysteresis - making it optimal for energy-constrained, noise-sensitive, and wide-supply-range applications where external feedback is undesirable.
Availability
NCX2222 is available at Aetrix Electronics and suitable for cellular telephony, security system design, portable medical monitors, and industrial sensor interface modules requiring stable component supply and long-term lifecycle support.
Supply support for NCX2222 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 NCX2222 belongs to NXP's ultra-low-power analog comparator family, engineered specifically for energy-efficient portable electronics and battery-operated security systems where minimal supply current and wide-voltage compatibility are mandatory.
FAQ
What is the minimum operating voltage for the NCX2222?
The NCX2222 is guaranteed to operate functionally down to 1.3 V supply voltage, with full electrical specifications validated from 1.6 V to 5.5 V. This makes the NCX2222 suitable for single-cell lithium batteries and other low-headroom power domains where competing comparators require ≥1.6 V or ≥1.8 V minimum supply.
Does the NCX2222 require external hysteresis components?
No - the NCX2222 includes factory-trimmed internal hysteresis of 6–13 mV (9 mV typical), eliminating the need for external positive feedback resistors. This simplifies PCB layout and improves consistency in noise-prone applications such as intrusion detection or motor control feedback.
Can the NCX2222 be used as a logic level translator?
Yes - the NCX2222's open-drain outputs and rail-to-rail inputs enable reliable bidirectional logic level translation. For example, connecting IN1+ to a 3.3 V GPIO and pulling OUT1 to 5 V allows safe 3.3 V → 5 V signal conversion, as confirmed in Figure 15 of the official NCX2222 datasheet.
What package options are available for the NCX2222?
The NCX2222 is offered in five qualified packages: TSSOP8 (SOT505-2), HXSON8 (SOT972-2), XSON8 (SOT833-1 and SOT1089), and XQFN8 (SOT902-2). All share identical pinout, thermal pad structure (non-soldered substrate), and electrical specifications - allowing layout reuse across form factors.
Is the NCX2222 suitable for zero-crossing detection?
Yes - the NCX2222 supports zero-crossing detection without phase inversion, even when input signals exceed the supply rails. Its rail-to-rail input range, internal hysteresis, and 0.8 µs propagation delay make it ideal for clean AC line sensing in energy metering or motor control, as demonstrated in Figure 13 of the NCX2222 datasheet.
NCX2222GTX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 8-XFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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, SOT833-1 (1.95x1)
NCX2222GTX FAQ
1.How can I place an order for NCX2222GTX through Aetrix?
Please submit a Request for Quotation (RFQ) for NCX2222GTX 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 NCX2222GTX reliable?
The price and inventory of NCX2222GTX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCX2222GTX is usually 5 days.
3.What payment methods are accepted for NCX2222GTX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCX2222GTX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCX2222GTX?
NCX2222GTX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCX2222GTX 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 NCX2222GTX?
For technical support, including NCX2222GTX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCX2222GTX requirements.
6.How does Aetrix verify that NCX2222GTX is sourced from the original manufacturer or authorized distributors?
All NCX2222GTX 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 NCX2222GTX meets industry standards.
7.What is the process for return or replacement of NCX2222GTX?
All NCX2222GTX units undergo pre-shipment inspection (PSI). If there is an issue with NCX2222GTX, 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 NCX2222GTX part is unused and in its original packaging.
Return procedure for NCX2222GTX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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