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Analog Devices Inc./Maxim Integrated MAX934ESE
- Part No.:
- MAX934ESE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX934ESE.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,967
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Product details
Overview
MAX934ESE from Maxim Integrated is a quad micropower comparator with integrated 1.182V ±2% bandgap reference, designed for ultra-low-power single- or dual-supply systems. It draws ≤4µA supply current over –40°C to +85°C, supports input common-mode range from V– to (V+ – 1.3V), features TTL/CMOS-compatible outputs that source up to 40mA and sink ≥5mA, and enables adjustable hysteresis - ideal for battery-powered threshold detection in portable instrumentation.
For engineers reviewing the MAX934ESE datasheet, MAX934ESE pinout, MAX934ESE application, or MAX934ESE equivalent, key selection considerations include its quad-comparator topology with independent inputs/outputs, rail-to-rail input capability down to V–, GND-referenced output swing (V+ to GND), internal reference accuracy and temperature drift, and compatibility with low-voltage operation (down to 2.5V single supply or ±1.25V dual supply).
Technical Context
The MAX934ESE implements four independent comparators sharing a single internal 1.182V ±2% reference referenced to V–, with each output stage capable of continuous 40mA sourcing and >5mA sinking without crowbar current. Its input stage operates from V– to (V+ – 1.3V), enabling direct sensing near ground in single-supply configurations.
Unlike MAX931/MAX932/MAX933, the MAX934ESE lacks a dedicated HYST pin; hysteresis must be implemented externally via positive feedback. It uses a 16-pin narrow SO package with separate V– and GND pins, supporting dual-supply operation (±1.25V to ±5.5V) while maintaining TTL/CMOS output compatibility at +5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply or ±1.25V to ±5.5V dual supply - enables use in 3V/5V systems and bipolar signal monitoring. |
| Quiescent Supply Current | ≤4µA over –40°C to +85°C - ensures multi-year battery life in always-on sensor nodes. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C), ±2.5% (–40°C to +85°C) - provides stable threshold generation without external components. |
| Input Common-Mode Range | V– to (V+ – 1.3V) - allows direct interface to signals referenced to ground or negative rails. |
| Output Drive Capability | Sources 40mA continuously, sinks ≥5mA - directly drives LEDs, small relays, or logic inputs without buffering. |
| Propagation Delay | 12µs typical (10mV overdrive, +25°C) - suitable for medium-speed window detection and oscillator timing. |
| Reference Load Capacity | Sinks 8µA / sources 15µA - supports biasing of up to three comparator HYST inputs or resistive dividers. |
Pinout & Package
MAX934ESE is housed in a 16-pin narrow SOIC (Small Outline Integrated Circuit) package, 3.9mm width, with exposed pad not electrically connected. Pin 1 is marked by a notch or dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output; swings from V+ to GND; drives loads directly with 40mA source capability. |
| 2 | OUTA | Comparator A output; identical drive strength and voltage range as OUTB. |
| 3 | V+ | Positive supply rail; accepts +2.5V to +11V (single) or connects to +V in dual-supply mode. |
| 4 | INA− | Inverting input of comparator A; supports common-mode range down to V−. |
| 5 | INA+ | Noninverting input of comparator A; used with INA− to form first comparison channel. |
| 6 | INB− | Inverting input of comparator B; electrically isolated from other inputs. |
| 7 | INB+ | Noninverting input of comparator B; enables independent second comparison function. |
| 8 | REF | 1.182V reference output referenced to V−; supplies precision threshold for all comparators. |
| 9 | V− | Negative supply rail; connect to GND for single-supply operation; sets reference offset baseline. |
| 10 | INC− | Inverting input of comparator C; third independent comparison channel. |
| 11 | INC+ | Noninverting input of comparator C; supports rail-to-rail input sensing. |
| 12 | IND− | Inverting input of comparator D; fourth channel, fully isolated. |
| 13 | IND+ | Noninverting input of comparator D; completes quad-comparator functionality. |
| 14 | GND | Digital ground reference; tied to system ground; separates output return path from V− in dual-supply configs. |
| 15 | OUTD | Comparator D output; same electrical characteristics as OUTA/OUTB/OUTC. |
| 16 | OUTC | Comparator C output; TTL/CMOS-compatible swing from V+ to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent comparators | Four fully isolated comparison channels enable simultaneous multi-threshold monitoring in compact space-constrained designs. |
| Integrated 1.182V ±2% reference | Eliminates need for external voltage reference IC or precision resistor divider, reducing BOM count and layout area. |
| No crowbar current during switching | Prevents supply rail disturbance and parasitic feedback, improving stability without mandatory bypass capacitors. |
| 40mA continuous output source current | Directly drives LEDs, optocouplers, or logic gates without external transistors or buffers - simplifies power-stage design. |
| Rail-to-rail input range (V− to V+ −1.3V) | Supports accurate low-side sensing (e.g., battery voltage monitoring down to 0V) and high-side sensing near V+. |
Applications
| Battery Voltage Monitoring | Window Comparator System |
|---|---|
|
Use Scenario: Continuous monitoring of Li-ion cell voltage (2.5V–4.2V) in portable medical devices to trigger low-battery warning and overvoltage shutdown. IC Role / Device Role / Timing Role: MAX934ESE acts as quad threshold detector: two comparators monitor upper/lower limits using REF-based dividers; remaining two implement hysteresis and latching logic. Use Value: 4µA quiescent current extends battery runtime; integrated reference ensures consistent trip points across temperature; GND-referenced outputs interface directly with microcontroller GPIOs. |
Use Scenario: Power-supply supervision in industrial PLC modules requiring precise undervoltage (4.5V) and overvoltage (5.5V) detection with noise immunity. IC Role / Device Role / Timing Role: MAX934ESE serves as dual-channel window detector: comparators A/B generate active-low UV/OV flags; comparators C/D implement external hysteresis and AND logic for "power-good" assertion. Use Value: Eliminates four discrete comparators and reference IC; ±2% reference tolerance ensures reliable margin against supply ripple; 12µs propagation delay enables fast fault response. |
| LED Bar-Graph Display Driver | Low-Voltage Oscillator Circuit |
|
Use Scenario: Four-segment battery level indicator in handheld test equipment, where each LED corresponds to 25% state-of-charge. IC Role / Device Role / Timing Role: MAX934ESE functions as quad comparator with cascaded resistor ladder: REF feeds voltage divider; each comparator compares VIN against progressively higher thresholds. Use Value: 40mA per output drives standard LEDs at full brightness without current-limiting resistors; ultra-low supply current preserves display runtime during standby. |
Use Scenario: Relaxation oscillator generating 1–10Hz clock for real-time clock backup or low-power wake-up timer in energy-harvesting sensors. IC Role / Device Role / Timing Role: MAX934ESE operates as hysteresis-based oscillator: one comparator charges/discharges capacitor via REF-derived current source; output toggles at thresholds set by RC time constant. Use Value: No external reference needed - REF provides stable 1.182V基准; low 4µA current minimizes oscillator power overhead; predictable 12µs delay enables accurate frequency tuning. |
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 quad comparator + reference functionality, but rated for 0°C to +70°C commercial temperature range. | Not suitable for automotive or industrial environments requiring –40°C operation. | Select MAX934CSE only for cost-sensitive consumer-grade applications within commercial temp range. |
| MAX924ESE | Pin-compatible quad comparator with 1% reference accuracy (vs. 2% in MAX934ESE); otherwise identical pinout, supply, and drive specs. | Higher reference precision improves threshold repeatability in metrology or calibration-critical systems. | Choose MAX924ESE when ±1% reference tolerance is required; note increased cost and identical footprint. |
Compared with MAX934CSE, MAX934ESE adds extended temperature support (–40°C to +85°C) essential for harsh environments, while MAX924ESE trades 1% reference accuracy for tighter threshold control - both retain identical quad-comparator architecture, 4µA quiescent current, and 40mA output drive.
Availability
MAX934ESE is available at Aetrix Electronics and suitable for battery-powered systems, precision threshold detectors, window comparators, and low-power oscillator circuits requiring stable component supply across extended temperature ranges.
Supply support for MAX934ESE 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 MAX931–MAX934 family was designed for ultra-low-power sensing and threshold detection in portable and energy-constrained systems, combining micropower operation, integrated reference, and robust output drive in minimal footprint packages.
FAQ
What is the operating temperature range of the MAX934ESE?
The MAX934ESE is specified for operation from –40°C to +85°C, making it suitable for industrial, automotive, and outdoor electronics applications where ambient conditions exceed commercial-grade limits. This extended temperature rating is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet.
Does the MAX934ESE have an internal hysteresis pin like the MAX931–MAX933?
No, the MAX934ESE does not include a dedicated HYST pin. Hysteresis must be implemented externally using positive feedback resistors on each comparator input pair, as detailed in Figure 4 of the datasheet. This differs from MAX931/MAX932/MAX933, which feature a shared HYST pin for simplified hysteresis programming.
Can the MAX934ESE operate from a single 3V supply?
Yes, the MAX934ESE supports single-supply operation from +2.5V to +11V. At +3V, it maintains full functionality: the reference remains stable at 1.182V, inputs operate from GND to 1.7V, and outputs swing from 3V to GND - verified in the Electrical Characteristics tables for 3V operation.
What is the maximum continuous output source current of the MAX934ESE?
The MAX934ESE delivers up to 40mA continuous source current per output, as stated in the General Description and confirmed in Typical Operating Characteristics (Figure MAX121/124-TOC17). This capability allows direct driving of LEDs, small solenoids, or logic inputs without external buffer stages.
Is the MAX934ESE pin-compatible with any 1% reference alternatives?
Yes, the MAX934ESE is pin-compatible with the MAX924ESE, which offers identical quad-comparator functionality and package but with a 1% accurate internal reference. This direct replacement is explicitly stated in the datasheet's "Ordering Information" footnote: "The MAX934 and MAX924 are pin-compatible."
MAX934ESE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for MAX934ESE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX934ESE 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 reliable?
The price and inventory of MAX934ESE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX934ESE is usually 5 days.
3.What payment methods are accepted for MAX934ESE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX934ESE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX934ESE?
MAX934ESE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX934ESE 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?
For technical support, including MAX934ESE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX934ESE requirements.
6.How does Aetrix verify that MAX934ESE is sourced from the original manufacturer or authorized distributors?
All MAX934ESE 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 meets industry standards.
7.What is the process for return or replacement of MAX934ESE?
All MAX934ESE units undergo pre-shipment inspection (PSI). If there is an issue with MAX934ESE, 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 part is unused and in its original packaging.
Return procedure for MAX934ESE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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