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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:2,842
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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, 11–18 µA total supply current (typical), open-drain outputs capable of sinking beyond VCC up to +6V, and no internal reference or programmable hysteresis. It is designed for ultra-low-power threshold detection in space-constrained 2-cell battery systems.
For engineers reviewing the MAX970ESD-T datasheet, MAX970ESD-T pinout, MAX970ESD-T application, or MAX970ESD-T equivalent, key selection criteria include its quad-channel count, absence of reference/hysteresis circuitry, 14-pin SO package, -40°C to +85°C operating range, and compatibility with low-voltage level translation and window-comparator topologies using external components.
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 requiring external pull-up resistors. Its input bias current is ±5 nA (typical), input offset voltage is 10 mV (max, -40°C to +85°C, µMAX package), and propagation delay is 10 µs (50 mV overdrive).
No internal voltage reference or hysteresis control is integrated-unlike MAX965/967/968/969-so external resistor networks are required for reference-based thresholding or hysteresis. The device supports continuous short-circuit tolerance on all inputs and outputs to either rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Comparator Count | 4 independent channels in one IC |
| Supply Voltage Range | +1.6V to +5.5V single supply; enables direct use with 2-cell alkaline/NiMH or Li-ion batteries |
| Total Supply Current | 11–18 µA (typical at TA = +25°C); ultra-low quiescent draw for multi-year battery life |
| Input Common-Mode Range | -0.25V to (VCC – 0.25V); supports sensing near ground or rail without level-shifting |
| Propagation Delay | 10 µs at 50 mV overdrive; suitable for moderate-speed monitoring (e.g., battery undervoltage lockout) |
| Output Type | Open-drain; allows flexible pull-up to any voltage ≤ +6V, enabling voltage-level translation across domains |
| Operating Temperature | -40°C to +85°C; qualified for industrial and portable equipment environments |
Pinout & Package
MAX970ESD-T is housed in a 14-pin SO (Small Outline) package (package code S14-4), with 1.27 mm lead pitch and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | OUTA, OUTB, OUTC, OUTD | Open-drain outputs for comparators A–D; require external pull-up resistors for logic-high assertion |
| 5, 6, 7, 8 | INA+, INB+, INC+, IND+ | Noninverting inputs for comparators A–D; accept rail-to-rail input voltages |
| 9, 10, 11, 12 | INA−, INB−, INC−, IND− | Inverting inputs for comparators A–D; support full common-mode range and differential operation |
| 13 | VCC | Positive supply input; must be decoupled with ≥0.1 µF ceramic capacitor near pin |
| 14 | GND | Analog/digital ground reference; shared return path for all comparators and supply |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables accurate threshold detection down to 0 V and up to VCC – 0.25 V without external biasing |
| Ultra-low supply current | 11–18 µA total (not per comparator); reduces battery load in always-on sensor monitoring |
| Open-drain output architecture | Supports mixed-voltage system interfacing (e.g., 1.8V comparator output pulled to 3.3V or 5V bus) |
| Robust fault tolerance | All inputs/outputs withstand continuous short-circuit to GND or VCC without damage or latch-up |
| Wide temperature qualification | Specified performance across -40°C to +85°C ensures reliability in automotive accessory and industrial handheld devices |
Applications
| 2-Cell Battery Monitoring | Window Comparator System |
|---|---|
Use Scenario: Real-time monitoring of dual AA/AAA battery pack voltage during discharge to prevent deep depletion. IC Role / Device Role / Timing Role: Quad comparator configured as two independent high/low thresholds (e.g., 2.4V upper, 1.8V lower) using external resistor dividers and pull-ups. Use Value: Enables precise, low-power battery health indication without microcontroller intervention or reference IC overhead. | Use Scenario: Detecting whether an analog sensor signal (e.g., temperature, light) remains within a defined safe operating band. IC Role / Device Role / Timing Role: Two comparators compare signal against upper/lower reference voltages; third/fourth generate ANDed logic output indicating in-band status. Use Value: Provides fail-safe envelope detection with <18 µA static power, eliminating need for external op-amps or ADC polling. |
| Voltage-Level Translation | Ground/Supply-Sensing Interface |
Use Scenario: Converting low-voltage logic (e.g., 1.8V I²C alert) to 3.3V or 5V-compatible interrupt signal for host processor. IC Role / Device Role / Timing Role: Single comparator compares 1.8V signal to mid-rail reference; open-drain output pulled to higher domain voltage. Use Value: Achieves bidirectional level shifting with no active power in quiescent state and zero propagation delay penalty vs. dedicated translators. | Use Scenario: Detecting loss of system supply rail or ground continuity failure in safety-critical embedded controllers. IC Role / Device Role / Timing Role: One comparator monitors VCC via resistor divider; another checks GND integrity using current-sense feedback path. Use Value: Delivers sub-20 µA fault-detection capability with rail-to-rail input coverage, supporting functional safety diagnostics in ISO 26262-compliant designs. |
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 | Reduces external component count for reference-based thresholding; supports common hysteresis across all four comparators | Select when reference integration and hysteresis control justify larger package and higher cost |
| TLV3704IDR | Lower supply current (1.6 µA per comparator), rail-to-rail I/O, no internal reference; 14-pin SO, same pinout family but not pin-compatible | Better suited for extreme ultra-low-power applications where <7 µA total is required; requires external hysteresis network | Select when minimizing total system current is critical and board layout allows re-routing for non-pin-compatible footprint |
Compared with MAX970ESD-T, MAX969EEE adds reference and hysteresis functionality at the cost of larger size and higher price, while TLV3704IDR achieves significantly lower quiescent current but lacks Maxim's extended low-voltage operation below 1.8V and robust short-circuit tolerance.
Availability
MAX970ESD-T is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, voltage-level translation interfaces, and ground/supply-sensing applications requiring stable component supply and long-term industrial availability.
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) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and consumer markets.
The MAX965–MAX970 family was engineered specifically for micropower, ultra-low-voltage comparator functions in battery-constrained portable electronics-emphasizing rail-to-rail operation, minimal supply current, and robustness in harsh electrical environments.
FAQ
Does MAX970ESD-T include an internal voltage reference?
No, MAX970ESD-T does not integrate a voltage reference. Unlike MAX965/MAX967/MAX968/MAX969, it omits the REF and HYST pins entirely. Threshold detection requires externally generated reference voltages-e.g., resistor dividers from VCC or a separate precision reference IC-to drive its IN+ and IN− inputs. This simplifies the die but increases external component count for reference-dependent applications.
What is the maximum sink current capability of MAX970ESD-T outputs?
The MAX970ESD-T open-drain outputs can sink up to 10 mA continuously (per channel) at VCC = 5V and TA = +25°C, with guaranteed operation down to 100 µA sink current at VCC = 1.6V. Output low voltage is 0.2 V (max) at 100 µA and 1.6V < VCC < 2.7V, rising to 0.4 V (max) at 500 µA and 2.7V < VCC < 5.5V. Short-circuit to GND is allowed indefinitely without damage.
Can MAX970ESD-T operate from a 1.0V supply?
MAX970ESD-T is specified for 1.6V to 5.5V operation. While comparator functionality may persist down to ~1.0V, the datasheet explicitly states that performance degrades below 1.6V: reference functionality is absent (not applicable here), input common-mode range remains rail-to-rail, but output sink capability drops and propagation delay increases significantly. For reliable operation, maintain VCC ≥ 1.6V.
Is MAX970ESD-T pin-compatible with other MAX965–MAX970 family members?
No, MAX970ESD-T is not pin-compatible with MAX965/MAX966/MAX967/MAX968 (8-pin) or MAX969 (16-pin QSOP). It uses a unique 14-pin SO package (S14-4) with dedicated pins for all four comparator inputs and outputs-no shared REF, HYST, or NC functions. Board layout must be designed specifically for MAX970ESD-T's 14-pin pinout.
How is hysteresis implemented on MAX970ESD-T given no HYST pin?
Since MAX970ESD-T lacks a HYST pin, hysteresis must be added externally using positive feedback-typically a three-resistor network (R1, R2, R3) between output, IN+, and reference voltage. This method draws slightly more current than the HYST-pin approach used in MAX965/967/968/969 and introduces minor delay, but provides full design flexibility for custom hysteresis bands. Application Figure 4 in the datasheet details the calculation procedure.
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:
- Obsolete
- 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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