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Analog Devices Inc./Maxim Integrated MAX9117EXK+T
- Part No.:
- MAX9117EXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX9117EXK+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SC70
- Quantity:
- Payment:
- Shipping:
Inventory:8,838
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Product details
Overview
The MAX9117EXK+T from Analog Devices is a nanopower, single-channel comparator with integrated 1.252V ±1.75% reference, Beyond-the-Rails™ input capability (VEE −0.2V to VCC +0.2V), 600nA supply current at 1.6V, and push-pull rail-to-rail output driving ±5mA. It is designed for ultra-low-power 2-cell battery monitoring and threshold detection in space-constrained portable systems.
For engineers reviewing the MAX9117EXK+T datasheet, MAX9117EXK+T pinout, MAX9117EXK+T application, or MAX9117EXK+T equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated SC70-5 pin mapping, application-specific use-value analysis, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The MAX9117EXK+T employs a break-before-make output stage that eliminates crowbar-current surges during switching, reducing supply glitches and dynamic power consumption. Its input stage supports common-mode voltages beyond both supply rails by 200mV, enabling direct sensing at ground or supply lines without level-shifting.
It integrates a PNP emitter-follower reference (1.252V ±1.75%, 100ppm/°C TC) with ~200kΩ output impedance and internal 4mV hysteresis to prevent oscillation on slow or noisy inputs-critical for reliable battery voltage threshold detection in low-noise, high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables operation across full discharge curve of 2-cell alkaline (1.8V–3.0V) or Li-ion (2.7V–3.5V) batteries. |
| Supply Current | 600nA typical at 1.6V - extends battery life to >2.5 million hours (~285 years) in continuous 2-cell alkaline monitoring per Table 1. |
| Input Common-Mode Range | VEE −0.2V to VCC +0.2V - allows direct connection to ground-referenced sensors or supply-line monitors without external biasing. |
| Reference Voltage | 1.252V ±1.75% (−40°C to +85°C) - provides stable, factory-trimmed threshold for precise low-voltage battery end-of-life detection. |
| Output Drive | ±5mA rail-to-rail push-pull - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers in portable systems. |
| Propagation Delay | 15µs (low-to-high) / 16µs (high-to-low) at 1.6V - sufficient speed for battery voltage polling and wake-up event detection in sleep-mode systems. |
| Hysteresis | 4mV internal - suppresses chatter on slowly varying battery voltage near trip points without requiring external feedback resistors. |
Pinout & Package
MAX9117EXK+T is housed in a lead-free 5-pin SC70-5 package (X5-1), measuring 2.0mm × 1.25mm × 0.9mm, with 0.65mm pitch and exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | CMOS push-pull output - sinks and sources up to ±5mA; swings rail-to-rail; no external pullup required. |
| 2 | VEE | Negative supply terminal - connects to system ground (0V) in single-supply configurations. |
| 3 | IN+ | Noninverting input - accepts signals from VEE −0.2V to VCC +0.2V; used for battery voltage or sensor signal monitoring. |
| 4 | REF | Internal 1.252V reference output - buffered reference node; bypass with low-leakage capacitor if noise-sensitive. |
| 5 | VCC | Positive supply terminal - powers comparator and reference; operates down to 1.6V for deep battery discharge support. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ inputs | Enables direct ground- or supply-referenced sensing without level shifters or bias networks - reduces BOM count and PCB area. |
| 600nA supply current at 1.6V | Minimizes quiescent drain on primary batteries - supports >10-year shelf life in always-on telemetry nodes. |
| Integrated 1.252V ±1.75% reference | Eliminates need for external precision reference IC or resistor divider - improves long-term accuracy and temperature stability. |
| Crowbar-current-free switching | Prevents supply rail collapse during output transitions - avoids false resets in co-located microcontrollers or RF ICs. |
| Internal 4mV hysteresis | Guarantees clean, chatter-free output transitions on noisy or slowly ramping battery voltage signals - no external components needed. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Threshold Detection |
|---|---|
Use Scenario: Monitoring voltage of two-series alkaline cells (1.8V–3.0V) in a medical thermometer to trigger low-battery alert before shutdown. IC Role / Device Role / Timing Role: Comparator compares battery voltage against internal 1.252V reference to detect <2.0V condition; outputs active-high flag to MCU. Use Value: Eliminates external reference and reduces total solution current to ≤600nA - extends usable battery life by 2× versus discrete reference + comparator solutions. | Use Scenario: Detecting when a wearable's coin-cell drops below 2.2V to initiate graceful firmware save-and-sleep sequence. IC Role / Device Role / Timing Role: Acts as reset supervisor with hysteresis; REF pin supplies stable threshold; OUT drives MCU interrupt pin. Use Value: Internal hysteresis prevents repeated wakeups near trip point; 600nA ICC ensures <1% annual self-discharge contribution from monitoring circuitry. |
| Sensing at Ground Line | Telemetry System Wake-Up |
Use Scenario: Measuring current through shunt resistor tied to system ground in a remote soil moisture sensor node. IC Role / Device Role / Timing Role: IN+ connected to shunt low-side; IN− tied to REF; detects current-induced voltage crossing 1.252V threshold. Use Value: Beyond-the-Rails input allows direct ground-referenced measurement - avoids error-prone high-side sensing or op-amp amplification stages. | Use Scenario: Waking an LPWAN transmitter only when solar-charged supercapacitor reaches ≥3.0V in an environmental monitor. IC Role / Device Role / Timing Role: Compares supercap voltage (divided to fit REF range) against internal reference; OUT triggers MCU wake-up via GPIO. Use Value: Push-pull output directly asserts wake signal without pullup; 1.6V min VCC supports operation even as supercap discharges to 1.8V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9119EXK+T | No internal reference; 350nA supply current; same SC70-5 package and push-pull output. | Requires external reference or resistor divider for threshold setting; better suited for designs needing lowest possible ICC where reference is already available. | Select MAX9119EXK+T when reference voltage is sourced elsewhere and sub-600nA ICC is critical - saves 250nA vs. MAX9117EXK+T. |
| TLV3691IDCKR | 320nA ICC; 1.8V–5.5V VCC range; open-drain output; no internal reference; 5-pin SC70 package. | Open-drain output requires external pullup; lacks integrated reference - needs additional components for fixed-threshold detection. | Choose TLV3691IDCKR for mixed-voltage logic interfacing or when open-drain wire-OR is required; not drop-in for REF-based designs. |
Compared with MAX9119EXK+T and TLV3691IDCKR, the MAX9117EXK+T uniquely combines integrated reference, push-pull output, and 600nA ICC in SC70-5 - making it optimal for self-contained, single-supply battery-monitoring circuits where board space and component count are constrained.
Availability
MAX9117EXK+T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power threshold detection, and ground-referenced sensing applications requiring stable component supply and guaranteed long-term availability.
Supply support for MAX9117EXK+T 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX9117EXK+T belongs to the MAX9117–MAX9120 nanopower comparator family, engineered specifically for energy-constrained battery-powered systems requiring precision threshold detection with minimal footprint and quiescent current.
FAQ
What is the operating voltage range of the MAX9117EXK+T?
The MAX9117EXK+T operates from 1.6V to 5.5V supply voltage (VCC to VEE), with full specification guaranteed over −40°C to +85°C. This 1.6V minimum enables reliable function across the entire discharge curve of two alkaline cells (down to 1.8V) and single Li-ion cells (down to 2.7V), making the MAX9117EXK+T ideal for long-life portable instrumentation and telemetry devices.
Does the MAX9117EXK+T require external components for basic operation?
No, the MAX9117EXK+T functions autonomously with only VCC, VEE, IN+, and load on OUT - its integrated 1.252V reference and internal 4mV hysteresis eliminate the need for external reference ICs, resistor dividers, or feedback networks in standard threshold-detection applications. A 100nF bypass capacitor on VCC is recommended only under high-noise or high-impedance supply conditions.
How does the Beyond-the-Rails™ input feature benefit system design?
The Beyond-the-Rails™ input (VEE −0.2V to VCC +0.2V) allows the MAX9117EXK+T to directly monitor signals referenced to ground or supply rails without level-shifting circuitry. For example, it can sense shunt voltage at system ground or detect overvoltage on a 5V rail while powered from 3.3V - reducing component count, PCB area, and potential error sources in compact battery-powered systems.
What is the output drive capability of the MAX9117EXK+T?
The MAX9117EXK+T features a CMOS push-pull output capable of sourcing and sinking ±5mA while maintaining rail-to-rail swing (VOL ≤ 400mV at 5mA sink, VOH ≤ 400mV drop at 5mA source). This allows direct interface to LEDs, logic inputs, small-signal MOSFET gates, or ADC reference enable lines - eliminating buffer stages and simplifying power-domain bridging in multi-voltage portable designs.
Can the MAX9117EXK+T be used in place of the MAX9118EXK+T?
No - the MAX9117EXK+T and MAX9118EXK+T are not interchangeable. While both share the same SC70-5 package and internal reference, MAX9117EXK+T has a push-pull output, whereas MAX9118EXK+T uses open-drain output requiring an external pullup. Substituting one for the other would cause incorrect logic levels or bus contention; the output architecture must match the target system's interface requirements.
MAX9117EXK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.001µA @ 5V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 1.6µA
- Current - Quiescent (Max):
- 80dB PSRR
- CMRR, PSRR (Typ):
- 40µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
MAX9117EXK+T FAQ
1.How can I place an order for MAX9117EXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9117EXK+T 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 MAX9117EXK+T reliable?
The price and inventory of MAX9117EXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9117EXK+T is usually 5 days.
3.What payment methods are accepted for MAX9117EXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9117EXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9117EXK+T?
MAX9117EXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9117EXK+T 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 MAX9117EXK+T?
For technical support, including MAX9117EXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9117EXK+T requirements.
6.How does Aetrix verify that MAX9117EXK+T is sourced from the original manufacturer or authorized distributors?
All MAX9117EXK+T 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 MAX9117EXK+T meets industry standards.
7.What is the process for return or replacement of MAX9117EXK+T?
All MAX9117EXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9117EXK+T, 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 MAX9117EXK+T part is unused and in its original packaging.
Return procedure for MAX9117EXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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