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Analog Devices Inc./Maxim Integrated MAX934ESE-T
- Part No.:
- MAX934ESE-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX934ESE-T.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,592
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Product details
Overview
MAX934ESE-T from Maxim Integrated is a quad micropower comparator with integrated 1.182V ±2% bandgap reference, designed for ultra-low-power battery-operated systems. It operates from +2.5V to +11V single supply (or ±1.25V to ±5.5V dual supply), features TTL/CMOS-compatible outputs that source up to 40mA and sink ≥5mA, and supports input common-mode range from V− to (V+ − 1.3V). It is used in window detectors, low-voltage monitoring, and oscillator circuits where sub-4µA quiescent current and rail-to-rail input capability are critical.
For engineers reviewing the MAX934ESE-T datasheet, MAX934ESE-T pinout, MAX934ESE-T application, or MAX934ESE-T equivalent, key selection criteria include guaranteed operation down to 2.5V supply, internal reference accuracy over −40°C to +85°C, quad-channel hysteresis implementation via external feedback, and compatibility with 16-pin narrow SO package layout constraints.
Technical Context
The MAX934ESE-T integrates four independent comparators and one shared 1.182V reference output referenced to V−. Each comparator's input stage accepts signals from V− to (V+ − 1.3V), enabling direct sensing of near-rail voltages without level-shifting. Its output stage eliminates crowbar current during transitions, minimizing supply-induced parasitic feedback and improving stability in noisy layouts.
Unlike the MAX931–MAX933, the MAX934ESE-T lacks a dedicated HYST pin; hysteresis must be implemented externally using positive feedback resistors per comparator. The device supports dual-supply operation (±1.25V to ±5.5V), and its REF output is rated for ±8µA load while maintaining ±2% accuracy across the extended temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply; ±1.25V to ±5.5V dual supply - enables direct interfacing with 3V/5V logic and bipolar sensor signals |
| Quiescent Supply Current | ≤4µA at +25°C - ensures multi-year battery life in always-on threshold detection applications |
| Reference Voltage | 1.182V ±2% (−40°C to +85°C) - provides stable, factory-trimmed reference without external components |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows direct monitoring of signals within 1.3V of V+ without attenuation or biasing |
| Output Drive Capability | Sources ≥40mA, sinks ≥5mA - directly drives LEDs, MOSFET gates, or logic inputs without buffer stages |
| Propagation Delay | 12µs typical (10mV overdrive) - balances speed and power for low-frequency monitoring tasks |
| Reference Load Capacity | ±8µA max - defines maximum external current draw from REF without degrading accuracy |
Pinout & Package
MAX934ESE-T is housed in a 16-pin narrow SO (Small Outline) package with exposed pad, rated for −40°C to +85°C operation. Pin pitch is 0.050", body width 0.154", and lead finish is matte tin.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output; TTL/CMOS-compatible, swings V+ to GND; capable of 40mA source / 5mA sink |
| 2 | OUTA | Comparator A output; identical drive capability and voltage swing as OUTB |
| 3 | V+ | Positive supply input; accepts +2.5V to +11V (single) or +1.25V to +5.5V (dual) |
| 4 | INA− | Inverting input of comparator A; supports common-mode range down to V− |
| 5 | INA+ | Noninverting input of comparator A; matched offset and leakage with INA− |
| 6 | INB− | Inverting input of comparator B; electrically identical to INA− |
| 7 | INB+ | Noninverting input of comparator B; matched performance with INB− |
| 8 | REF | 1.182V reference output referenced to V−; ±2% accuracy, ±8µA load limit |
| 9 | V− | Negative supply; connect to GND for single-supply operation; sets REF reference point |
| 10 | INC− | Inverting input of comparator C; fully independent, same specs as INA− |
| 11 | INC+ | Noninverting input of comparator C; matched pair with INC− |
| 12 | IND− | Inverting input of comparator D; independent channel with full rail-to-rail input support |
| 13 | IND+ | Noninverting input of comparator D; completes quad comparator set |
| 14 | GND | Ground connection; tied to V− internally for single-supply use; decoupling required at this pin |
| 15 | OUTD | Comparator D output; identical electrical behavior to OUTA and OUTB |
| 16 | OUTC | Comparator C output; functionally redundant with other outputs but electrically isolated |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ≤4µA over full −40°C to +85°C range - extends shelf life and runtime in coin-cell-powered devices |
| Integrated 1.182V ±2% reference | Eliminates need for external precision reference IC or resistor divider, reducing BOM count and layout area |
| No crowbar output switching current | Prevents supply rail disturbance during output transitions, removing need for aggressive local bypassing |
| Quad independent comparators | Enables multi-threshold detection (e.g., window + fault + margin) in single 16-pin SO footprint |
| Rail-to-rail input capability | Accepts signals from V− to (V+ − 1.3V) - supports direct battery voltage monitoring without level shifters |
| Dual-supply operation support | Operates from ±1.25V to ±5.5V - suitable for analog front-ends processing bipolar sensor outputs |
Applications
| Window Detector | Battery Voltage Monitor |
|---|---|
Use Scenario: Detecting undervoltage (e.g., 4.5V) and overvoltage (e.g., 5.5V) conditions on a 5V system rail to generate POWER_GOOD signal. IC Role / Device Role / Timing Role: Dual comparator (OUTA/OUTB) compares divided rail voltage against internal 1.182V reference; hysteresis added via R4/R5 to prevent chatter. Use Value: Eliminates external reference and reduces component count by 3–4 parts versus discrete solutions. |
Use Scenario: Monitoring Li-ion battery voltage (2.5V–4.2V) to trigger low-battery warning and shutdown thresholds. IC Role / Device Role / Timing Role: Two comparators compare scaled battery voltage against REF; third comparator validates charging status. Use Value: Sub-4µA total supply current enables continuous monitoring without measurable impact on battery capacity. |
| Oscillator Circuit | LED Bar-Graph Level Gauge |
Use Scenario: Building relaxation oscillator for timing or clock generation in ultra-low-power microcontroller wake-up circuits. IC Role / Device Role / Timing Role: One comparator acts as Schmitt trigger with RC network; REF provides stable hysteresis reference. Use Value: Propagation delay <12µs and no crowbar current ensure stable oscillation frequency across temperature and supply variation. |
Use Scenario: Driving four LEDs in sequence to indicate analog signal level (e.g., audio peak, sensor output). IC Role / Device Role / Timing Role: Four comparators compare stepped reference voltages (generated from REF + resistor ladder) against input signal. Use Value: 40mA source current per output drives LEDs directly without current-limiting transistors or driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator with reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX934CSE | Same functionality and pinout; commercial temp range (0°C to +70°C) only | Not qualified for industrial or automotive ambient environments | Select when operating environment stays within 0°C–70°C and cost sensitivity outweighs extended temperature coverage |
| MAX924ESE-T | Quad comparator with 1% reference accuracy (vs. 2%); otherwise identical pinout, package, and electrical specs | Higher reference precision enables tighter threshold tolerances in metrology or calibration-critical systems | Choose when ±1% reference accuracy is required and 4µA supply current remains acceptable |
Compared with MAX934CSE, the MAX934ESE-T adds −40°C to +85°C qualification for harsher environments; compared with MAX924ESE-T, it trades 1% reference accuracy for lower cost while retaining identical low-power operation and layout compatibility.
Availability
MAX934ESE-T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and oscillator circuits requiring stable component supply across industrial temperature ranges.
Supply support for MAX934ESE-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, interface, and reliability-critical applications.
The MAX931–MAX934 family was engineered for ultra-low-power threshold detection in portable and energy-constrained systems, integrating reference and comparator functions to minimize external components and board space.
FAQ
What is the operating temperature range for MAX934ESE-T?
The MAX934ESE-T is specified for −40°C to +85°C operation, making it suitable for industrial, automotive under-hood, and outdoor electronics applications. This extended temperature grade is confirmed in the Ordering Information table, where "E" denotes the −40°C to +85°C range and "SE" specifies the 16-pin narrow SO package. All electrical characteristics in the datasheet are guaranteed across this full range.
Does MAX934ESE-T have an internal hysteresis pin like MAX931–MAX933?
No, the MAX934ESE-T does not include a HYST pin. Hysteresis must be implemented externally using positive feedback resistors on each comparator input, as shown in Figure 4 of the datasheet. This differs from the MAX931/MAX932/MAX933, which provide a dedicated HYST pin for simpler hysteresis programming. The MAX934ESE-T's architecture prioritizes quad-channel independence over integrated hysteresis control.
Can MAX934ESE-T operate from a 3V single supply?
Yes, the MAX934ESE-T is fully specified for operation from +2.5V to +11V single supply. At +3V, it maintains ≤4µA supply current, 1.182V ±2% reference accuracy, and functional comparators with input common-mode range extending from GND to +1.7V. Performance metrics such as propagation delay increase slightly at lower voltages, but all core functionality remains guaranteed per the 3V Electrical Characteristics tables.
What is the maximum load current the REF pin can drive?
The REF pin of the MAX934ESE-T is characterized to source up to 15µA and sink up to 8µA while maintaining ±2% accuracy across temperature. Exceeding these limits risks reference voltage drift beyond specification. For higher-current applications, an external buffer amplifier is recommended. The datasheet explicitly warns against bypassing REF, as capacitive loading degrades noise performance and stability.
Is MAX934ESE-T pin-compatible with any 1% reference alternatives?
Yes, the MAX934ESE-T is pin-compatible with the MAX924ESE-T, which offers identical quad comparator functionality and 16-pin narrow SO packaging but with ±1% reference accuracy. This direct replacement enables accuracy upgrades without PCB redesign. The datasheet confirms: "The MAX931, MAX933, and MAX934 are pin-compatible with the 1% accurate MAX921, MAX923, and MAX924, respectively."
MAX934ESE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 4
- Output Type:
- CMOS, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 0.015mA @ 5V
- Current - Output (Typ):
- 8.5µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX934ESE-T FAQ
1.How can I place an order for MAX934ESE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX934ESE-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 MAX934ESE-T reliable?
The price and inventory of MAX934ESE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX934ESE-T is usually 5 days.
3.What payment methods are accepted for MAX934ESE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX934ESE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX934ESE-T?
MAX934ESE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX934ESE-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 MAX934ESE-T?
For technical support, including MAX934ESE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX934ESE-T requirements.
6.How does Aetrix verify that MAX934ESE-T is sourced from the original manufacturer or authorized distributors?
All MAX934ESE-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 MAX934ESE-T meets industry standards.
7.What is the process for return or replacement of MAX934ESE-T?
All MAX934ESE-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX934ESE-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 MAX934ESE-T part is unused and in its original packaging.
Return procedure for MAX934ESE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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