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Analog Devices Inc./Maxim Integrated MAX967EUA-T
- Part No.:
- MAX967EUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX967EUA-T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,419
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Product details
Overview
The MAX967EUA-T from Maxim Integrated is a dual micropower comparator with rail-to-rail inputs/outputs, integrated 1.235V ±1.5% reference, programmable hysteresis, and 8-pin µMAX package. It operates from +1.6V to +5.5V single supply, draws ≤16µA total supply current (8µA per comparator), and features open-drain outputs capable of sinking beyond VCC up to 6V. It is used in battery-powered voltage monitoring and window detection circuits.
For engineers reviewing the MAX967EUA-T datasheet, MAX967EUA-T pinout, MAX967EUA-T application, or MAX967EUA-T equivalent, key selection considerations include its dual-comparator architecture with shared hysteresis control, internal reference accuracy over -40°C to +85°C, ultra-low quiescent current at 1.6V operation, and compatibility with 2-cell battery systems requiring precise threshold detection.
Technical Context
The MAX967EUA-T implements two independent comparators sharing a common HYST input for synchronized hysteresis programming and a single REF output delivering 1.235V ±1.5% (0°C to +85°C) or ±2.5% (-40°C to +85°C). Its rail-to-rail input common-mode range extends from -0.25V to VCC − 0.25V, enabling direct sensing near ground or supply rails.
Each comparator exhibits 10µs propagation delay under 50mV overdrive, 4–6mV input offset voltage (µMAX package, -40°C to +85°C), and open-drain outputs with VOL ≤ 0.4V at 500µA sink current (VCC > 2.7V). The device supports voltage-level translation via external pull-up to voltages up to 6V above GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +5.5V - enables direct operation from 2-cell alkaline or Li-ion batteries without regulation. |
| Supply Current (Total) | 10µA to 16µA - ensures multi-year battery life in always-on portable sensors and monitors. |
| Reference Voltage | 1.235V ±2.5% over -40°C to +85°C - provides stable trip-point generation without external precision references. |
| Propagation Delay | 10µs at 50mV overdrive - supports response to fast transients in power-supply fault detection. |
| Input Offset Voltage | 6.0mV max over full temperature range - maintains accurate threshold discrimination in low-voltage systems. |
| Output Sink Capability | Valid to 6V above GND - allows level-shifting to higher-voltage logic domains (e.g., 3.3V/5V MCU interfaces). |
| Hysteresis Programmability | ±1mV to ±50mV via HYST pin - eliminates noise-induced chatter in noisy industrial or automotive environments. |
Pinout & Package
MAX967EUA-T uses an 8-pin µMAX package (U8-1), 3mm × 3mm, 0.5mm pitch, exposed pad for thermal enhancement. Pin 1 is OUTA; pin 2 is VCC; pin 3 is INA+; pin 4 is INA−; pin 5 is INB+; pin 6 is HYST; pin 7 is REF; pin 8 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Comparator A open-drain output | Sinks current only; requires external pull-up for logic-high state; compatible with mixed-voltage I/O. |
| 2 (VCC) | Positive supply input | Accepts +1.6V to +5.5V; powers both comparators and internal reference simultaneously. |
| 3 (INA+) | Comparator A noninverting input | Rail-to-rail capable; accepts signals from -0.25V to VCC − 0.25V for ground- or supply-referenced sensing. |
| 4 (INA−) | Comparator A inverting input | Matches INA+ specs; used with INA+ to form first voltage monitor channel. |
| 5 (INB+) | Comparator B noninverting input | Independent second channel input; shares same electrical specs as INA+. |
| 6 (HYST) | Hysteresis programming node | Accepts voltage from REF down to (REF − 50mV); sets identical hysteresis band for both comparators. |
| 7 (REF) | Internal 1.235V reference output | Sources up to 50µA; ±2.5% accuracy over full temperature range; bypass with 0.1µF for noise reduction. |
| 8 (GND) | Analog/digital ground | Common return for all internal circuitry; must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparator with shared hysteresis | Enables coordinated high/low threshold detection (e.g., window monitoring) using one resistor network instead of two. |
| Integrated 1.235V ±2.5% reference | Eliminates need for external voltage reference IC or precision resistor divider, reducing BOM count and layout area. |
| Rail-to-rail input common-mode range | Supports direct sensing of signals at or below ground (down to -0.25V) and up to within 0.25V of VCC - critical for low-voltage battery gauging. |
| Open-drain outputs with 6V tolerance | Permits interface to higher-voltage logic families (e.g., 5V TTL) without level-shifter ICs or discrete MOSFETs. |
| 10µs propagation delay at 50mV overdrive | Provides timely response to supply droop or overvoltage events while maintaining sub-16µA quiescent draw. |
Applications
| Battery Voltage Monitor | Window Comparator |
|---|---|
Use Scenario: Monitoring 2-cell alkaline battery voltage (2.0V–3.2V) to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against upper and lower thresholds derived from internal REF and resistor dividers. Use Value: Eliminates external reference and reduces component count by 3–4 parts versus discrete solutions, improving reliability in space-constrained wearables. |
Use Scenario: Validating that a regulated 3.3V supply remains within ±5% tolerance (3.135V–3.465V) in industrial controllers. IC Role / Device Role / Timing Role: One comparator detects undervoltage (INB− tied to REF-based divider), the other detects overvoltage (INA− tied to same divider). Use Value: Shared HYST pin ensures matched hysteresis on both thresholds, preventing false trips during slow supply ramp-up or brownout recovery. |
| Voltage-Level Translator | Ground-Sensing Threshold Detector |
Use Scenario: Converting 1.8V logic signals from a low-power MCU to 5V-compatible levels for driving legacy peripherals. IC Role / Device Role / Timing Role: Comparator A compares 1.8V signal to 1.235V REF; open-drain output pulled to 5V generates clean 5V logic swing. Use Value: Achieves bidirectional level translation without timing skew or shoot-through risk inherent in MOSFET-based translators. |
Use Scenario: Detecting ground faults in automotive body-control modules by monitoring voltage drop across shunt resistors. IC Role / Device Role / Timing Role: Comparator B senses differential voltage across shunt with INA− referenced to GND and INA+ biased slightly above GND via REF-derived divider. Use Value: Rail-to-rail input capability enables accurate sub-10mV fault detection even with noisy chassis ground returns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator with reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX965EUA-T | Single comparator, same reference and hysteresis architecture, identical µMAX-8 package and pinout except missing INB+/INB−/OUTB pins. | Requires two devices for dual-channel functions; increases PCB area and BOM cost. | Select when only one threshold comparison is needed and board space permits duplication. |
| TLV3702IDR | No internal reference; rail-to-rail I/O; 1.8V–16V supply; 850nA per comparator; no HYST pin - hysteresis requires external feedback resistors. | Higher supply range but lacks integrated reference, increasing design complexity for precision low-voltage thresholds. | Prefer when operating above 3V and external reference already exists; avoid where 1.6V start-up or reference accuracy <2.5% is required. |
Compared with MAX965EUA-T and TLV3702IDR, the MAX967EUA-T uniquely delivers dual-channel monitoring with factory-trimmed reference and single-point hysteresis control - reducing component count, layout effort, and calibration uncertainty in battery-critical systems.
Availability
MAX967EUA-T is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, window comparator designs, and voltage-level translation applications requiring stable component supply and long-term manufacturability.
Supply support for MAX967EUA-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
Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and portable electronics.
The MAX965–MAX970 family was developed specifically for ultra-low-power, single-supply voltage monitoring in space- and energy-constrained battery-operated equipment.
FAQ
What is the minimum operating voltage for the MAX967EUA-T?
The MAX967EUA-T is fully specified down to +1.6V supply voltage. While comparator functionality may persist down to +1.0V, reference accuracy degrades below +1.6V, and propagation delay increases significantly. For reliable operation with guaranteed 1.235V ±2.5% reference and ≤16µA supply current, maintain VCC ≥ +1.6V. The MAX967EUA-T datasheet specifies absolute minimum VCC as +1.6V for commercial-grade performance.
Does the MAX967EUA-T require external components to use its internal reference?
Yes - the MAX967EUA-T's internal 1.235V reference (pin 7) requires a 0.1µF ceramic bypass capacitor connected between REF and GND to minimize noise and ensure stability. Without this capacitor, reference output noise rises to ~1.0mV peak-to-peak, degrading comparator accuracy. The MAX967EUA-T does not require external resistors to enable the reference; it is active whenever VCC is applied within specification.
Can the MAX967EUA-T drive a 5V logic input directly?
Yes - the MAX967EUA-T's open-drain outputs (pins 1 and 6) can be pulled up to 5V (or up to 6V above GND) using an external resistor. When the comparator asserts low, the output sinks current to GND; when inactive, the pull-up defines the high state. This allows direct interfacing with 5V CMOS/TTL inputs without additional level-shifting circuitry. Ensure the pull-up resistor value limits sink current to ≤10mA per output.
How is hysteresis programmed on the MAX967EUA-T?
Hysteresis on the MAX967EUA-T is programmed using the HYST pin (pin 6) with two external resistors: R1 between REF and HYST, and R2 between HYST and GND. This configuration applies a controlled voltage offset to the internal comparator inputs, generating a hysteresis band from ±1mV to ±50mV. The MAX967EUA-T applies identical hysteresis to both comparators simultaneously - no separate adjustment is possible.
What is the input offset voltage specification for the MAX967EUA-T over temperature?
The MAX967EUA-T specifies a maximum input offset voltage of 6.0mV over the full operating temperature range of -40°C to +85°C in the µMAX package. At +25°C, typical offset is 4.0mV. This parameter is measured across the full common-mode input range and directly impacts threshold accuracy in precision monitoring applications such as battery end-of-discharge detection.
MAX967EUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 5.5V
- :
- 15mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.05µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 16µA
- Current - Quiescent (Max):
- 56.48dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 20µs
- Propagation Delay (Max):
- ±1mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-uMAX/uSOP
MAX967EUA-T FAQ
1.How can I place an order for MAX967EUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX967EUA-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 MAX967EUA-T reliable?
The price and inventory of MAX967EUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX967EUA-T is usually 5 days.
3.What payment methods are accepted for MAX967EUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX967EUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX967EUA-T?
MAX967EUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX967EUA-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 MAX967EUA-T?
For technical support, including MAX967EUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX967EUA-T requirements.
6.How does Aetrix verify that MAX967EUA-T is sourced from the original manufacturer or authorized distributors?
All MAX967EUA-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 MAX967EUA-T meets industry standards.
7.What is the process for return or replacement of MAX967EUA-T?
All MAX967EUA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX967EUA-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 MAX967EUA-T part is unused and in its original packaging.
Return procedure for MAX967EUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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