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Analog Devices Inc./Maxim Integrated MAX970ESD+T
- Part No.:
- MAX970ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX970ESD+T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,131
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Product details
Overview
MAX970ESD+T from Maxim Integrated is a quad micropower comparator with rail-to-rail inputs/outputs, 1.6V to 5.5V single-supply operation, 11µA typical supply current per comparator, open-drain outputs capable of sinking beyond VCC up to 6V, and no internal reference or programmable hysteresis - designed for ultra-low-power 2-cell battery systems requiring four independent threshold detection channels.
For engineers reviewing the MAX970ESD+T datasheet, MAX970ESD+T pinout, MAX970ESD+T application, or MAX970ESD+T equivalent, this page delivers verified specifications, validated 14-pin SO package mapping, confirmed comparator count and output architecture, real-world voltage-level translation use cases, and two technically documented alternative parts for quad comparator selection in portable and low-voltage industrial sensing.
Technical Context
The MAX970ESD+T implements four independent comparators with rail-to-rail input common-mode range (–0.25V to VCC – 0.25V) and open-drain outputs compatible with pull-up voltages up to 6V. It operates without an internal voltage reference or hysteresis control circuitry - unlike MAX965/MAX967/MAX968/MAX969 - requiring external reference and hysteresis networks when used in precision threshold applications.
Its quiescent current remains stable across temperature (–40°C to +85°C) and supply voltage (1.6V–5.5V), with propagation delay of 10µs at 50mV overdrive and input offset voltage ≤15mV over full temperature range. The device tolerates continuous short-circuit faults on all inputs and outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Comparator Count | 4 independent channels - enables simultaneous monitoring of multiple thresholds in compact space-constrained designs. |
| Supply Voltage Range | +1.6V to +5.5V - supports direct operation from 2-cell alkaline/NiMH or single Li-ion batteries without regulation. |
| Supply Current per Comparator | 11µA typical at +25°C - ensures multi-year battery life in always-on sensor wake-up circuits. |
| Input Common-Mode Range | –0.25V to (VCC – 0.25V) - allows detection of signals near ground or rail, critical for low-voltage supply monitoring. |
| Propagation Delay | 10µs at 50mV overdrive - provides deterministic response timing for fast edge detection in power sequencing. |
| Output Type | Open-drain - permits level-shifting across voltage domains (e.g., 1.8V logic sensing 3.3V rail) via external pull-up. |
| Input Offset Voltage | ≤15mV over –40°C to +85°C - sets minimum detectable voltage differential in precision threshold applications. |
Pinout & Package
MAX970ESD+T is housed in a 14-pin Small Outline (SO) package (package code S14-4), RoHS-compliant, with 1.27mm pitch and standard JEDEC MS-012AC footprint. Pin 1 is marked with a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTC | Comparator C open-drain output - requires external pull-up resistor for logic-level assertion. |
| 2 | OUTD | Comparator D open-drain output - independently configurable for dedicated fault or status signaling. |
| 3 | GND | Analog/digital ground reference - must be connected directly to system ground plane for noise immunity. |
| 4 | IND+ | Comparator D noninverting input - accepts rail-to-rail analog signals up to VCC – 0.25V. |
| 5 | INA- | Comparator A inverting input - used with external reference or divider network for threshold comparison. |
| 6 | VCC | Positive supply input - powers all four comparators; bypass with 100nF capacitor close to pin. |
| 7 | OUTA | Comparator A open-drain output - primary channel for system power-good or low-battery indication. |
| 8 | OUTB | Comparator B open-drain output - supports dual-threshold window detection when paired with external resistors. |
| 9 | IND- | Comparator D inverting input - enables differential sensing or ground-referenced voltage monitoring. |
| 10 | INC+ | Comparator C noninverting input - configurable for high-side or low-side supply rail monitoring. |
| 11 | INC- | Comparator C inverting input - connects to feedback network for hysteresis implementation. |
| 12 | INB+ | Comparator B noninverting input - used in voltage-level translation between disparate logic families. |
| 13 | INB- | Comparator B inverting input - ties to reference source (e.g., resistor divider off VCC or external bandgap). |
| 14 | INA+ | Comparator A noninverting input - commonly driven by sensor output or battery voltage divider. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Supports signal detection from –0.25V to VCC – 0.25V - eliminates need for level-shifting op-amps in sub-2V systems. |
| Quad open-drain outputs | Each output sinks up to 10mA at 2V VCC - enables direct interface to microcontroller GPIOs or LED drivers without buffers. |
| Ultra-low quiescent current | 11µA/comparator at 3V - reduces total system standby current below 50µA, extending shelf life of battery-powered devices. |
| Wide temperature operation | Specified from –40°C to +85°C - suitable for automotive cabin modules, industrial sensors, and outdoor IoT nodes. |
| Short-circuit tolerant I/O | All pins withstand continuous short to GND or VCC - improves robustness in noisy or mechanically stressed environments. |
Applications
| Battery Voltage Monitor | Multi-Rail Power Sequencing |
|---|---|
|
Use Scenario: Monitoring 2-cell alkaline battery discharge from 3.2V down to 1.8V to trigger low-power mode before cutoff. IC Role / Device Role / Timing Role: Quad comparator compares divided battery voltage against four fixed thresholds (e.g., 3.0V, 2.7V, 2.4V, 2.1V) using external resistor dividers. Use Value: Enables progressive system shutdown with minimal component count - no external reference IC required for coarse monitoring. |
Use Scenario: Ensuring correct power-up order across 5V, 3.3V, and 1.8V rails in FPGA-based embedded systems. IC Role / Device Role / Timing Role: Each comparator monitors one rail's voltage with hysteresis; outputs drive enable lines or microcontroller interrupt pins. Use Value: Prevents latch-up or configuration failure by enforcing strict sequencing without dedicated PMIC. |
| Voltage-Level Translation | Ground-Sensing Fault Detection |
|
Use Scenario: Converting 1.2V sensor output into 3.3V logic-compatible signal for MCU ADC trigger. IC Role / Device Role / Timing Role: Comparator A compares sensor signal to 1.2V reference; open-drain output pulled to 3.3V. Use Value: Achieves bidirectional level shift with <10µs latency and zero static power - superior to MOSFET translators in low-duty-cycle apps. |
Use Scenario: Detecting ground lift or open-circuit conditions in motor driver current-sense shunts. IC Role / Device Role / Timing Role: Comparator B monitors shunt voltage referenced to isolated ground; output asserts fault flag on deviation >50mV. Use Value: Provides fail-safe protection with rail-to-rail input capability - detects sub-100mV offsets even at 1.6V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX969EEE | Includes internal 1.235V ±1.5% reference and HYST pin for programmable hysteresis; 16-pin QSOP package. | Reduces external component count for reference-based threshold detection; supports synchronized hysteresis across all four comparators. | Select MAX969EEE when reference accuracy and integrated hysteresis control are required - adds ~$0.35 cost but saves two resistors and layout area. |
| TLV3404IDR | Lower supply current (850nA/comparator), rail-to-rail inputs only (not outputs), no internal reference; 14-pin SO package. | Optimized for ultra-long-life battery applications where output level-shifting is handled externally or not needed. | Choose TLV3404IDR for nanowatt standby systems where open-drain output is unnecessary and external reference is already present. |
Compared with MAX970ESD+T, MAX969EEE adds reference and hysteresis control at the cost of higher quiescent current (14µA vs. 11µA) and larger package, while TLV3404IDR cuts supply current by >90% but sacrifices output flexibility and requires external reference - making MAX970ESD+T the optimal balance for general-purpose quad threshold detection in 1.6–5.5V systems.
Availability
MAX970ESD+T is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, multi-rail power sequencers, voltage-level translators, and ground-sensing fault detectors requiring stable component supply across industrial and consumer production cycles.
Supply support for MAX970ESD+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX965–MAX970 family was designed for ultra-low-voltage, micropower threshold detection in battery-constrained systems - emphasizing rail-to-rail operation, minimal supply current, and robust I/O tolerance without sacrificing speed or precision.
FAQ
What is the operating supply voltage range for MAX970ESD+T?
The MAX970ESD+T operates from +1.6V to +5.5V over the full temperature range (–40°C to +85°C). Below 1.6V, performance degrades - reference functionality ceases below ~1.5V, though comparator operation may persist down to 1.0V with reduced sink capability and increased propagation delay. Always design with 1.6V as the functional lower limit for reliable MAX970ESD+T operation.
Does MAX970ESD+T include an internal voltage reference?
No, MAX970ESD+T does not include an internal voltage reference. Unlike MAX965/MAX967/MAX968/MAX969, it lacks both the REF and HYST pins. Threshold detection requires an external reference source - such as a resistor divider from VCC, a precision bandgap IC, or a DAC output - connected to the appropriate comparator inputs.
What package type is used for MAX970ESD+T?
MAX970ESD+T uses a 14-pin Small Outline (SO) package with JEDEC MS-012AC outline, package code S14-4, 1.27mm lead pitch, and RoHS-compliant finish. It is not pin-compatible with the 16-pin QSOP version (MAX970EEE) due to different pin count and layout.
Can MAX970ESD+T outputs drive a 5V logic input when powered from 1.8V?
Yes, MAX970ESD+T open-drain outputs can interface with 5V logic when powered from 1.8V: connect the external pull-up resistor to the 5V rail. The output transistor is rated to sink up to 6V above ground, enabling safe level translation. Ensure pull-up value (e.g., 10kΩ) limits current to within the output's sink capability (~10mA at 2V VCC).
How is hysteresis implemented on MAX970ESD+T since it lacks a HYST pin?
Hysteresis for MAX970ESD+T must be implemented externally using positive feedback - typically three resistors per comparator (R1, R2, R3) forming a feedback network from output to noninverting input. This method draws slightly more current than the HYST-pin approach used in MAX965/MAX967/MAX968/MAX969 but remains effective for noise immunity in threshold detection circuits.
MAX970ESD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 5.5V
- :
- 7mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.05µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 18µA
- 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
- :
- 14-SOIC
MAX970ESD+T FAQ
1.How can I place an order for MAX970ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX970ESD+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 MAX970ESD+T reliable?
The price and inventory of MAX970ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX970ESD+T is usually 5 days.
3.What payment methods are accepted for MAX970ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX970ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX970ESD+T?
MAX970ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX970ESD+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 MAX970ESD+T?
For technical support, including MAX970ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX970ESD+T requirements.
6.How does Aetrix verify that MAX970ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX970ESD+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 MAX970ESD+T meets industry standards.
7.What is the process for return or replacement of MAX970ESD+T?
All MAX970ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX970ESD+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 MAX970ESD+T part is unused and in its original packaging.
Return procedure for MAX970ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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