My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX934CSE
- Part No.:
- MAX934CSE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX934CSE.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,899
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX934CSE from Maxim Integrated is a quad micropower comparator with integrated 1.182V ±2% bandgap reference, designed for ultra-low-power single-supply systems. It features four independent comparators, each with rail-to-rail input range (V− to V+ − 1.3V), TTL/CMOS-compatible outputs that source up to 40mA and sink ≥5mA, and operates from +2.5V to +11V (or ±1.25V to ±5.5V dual supply). It is used in battery-powered threshold detection, window monitoring, and low-voltage oscillator circuits.
For engineers reviewing the MAX934CSE datasheet, MAX934CSE pinout, MAX934CSE application, or MAX934CSE equivalent, key selection criteria include guaranteed 4µA max supply current at +25°C, 12µs propagation delay (10mV overdrive), internal reference accuracy, quad-channel integration in 16-pin narrow SO package, and compatibility with low-voltage operation down to 2.5V.
Technical Context
The MAX934CSE implements four independent comparators sharing a single internal 1.182V reference referenced to V−, not GND. Its output stage eliminates crowbar current during transitions, minimizing parasitic supply feedback and enabling stable operation without strict layout constraints.
Each comparator supports programmable hysteresis via external positive feedback (not HYST pin - unlike MAX931–MAX933), with input common-mode range extending from V− to V+ − 1.3V. The device is specified for 0°C to +70°C commercial temperature range and packaged in 16-pin narrow SO (SOIC-N).
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 use in 3V/5V battery systems and bipolar signal monitoring. |
| Quiescent Supply Current | <4µA per comparator at +25°C - ensures multi-year operation on coin-cell batteries in always-on sensing nodes. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C) - provides stable, factory-trimmed threshold reference without external components. |
| Propagation Delay | 12µs typical (10mV overdrive) - supports medium-speed event detection in power sequencing and alarm circuits. |
| Output Drive Capability | Sources ≥40mA, sinks ≥5mA - directly drives LEDs, small relays, or logic inputs without buffer stages. |
| Input Common-Mode Range | V− to V+ − 1.3V - allows detection of signals near ground or rail in single-supply configurations. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded control and portable instrumentation. |
Pinout & Package
MAX934CSE is housed in a 16-pin narrow SO (SOIC-N) surface-mount package, 3.9mm width, 1.75mm height, 1.27mm pitch. Pin 1 marked by notch or dot; pin count increases counter-clockwise.
| Pin/Terminal | 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 supply positive rail). |
| 4 | INA− | Inverting input of comparator A; supports common-mode range from V− to V+ − 1.3V. |
| 5 | INA+ | Noninverting input of comparator A; same input voltage range and leakage spec (±0.01nA). |
| 6 | INB− | Inverting input of comparator B; electrically identical to INA−; no internal hysteresis pin. |
| 7 | INB+ | Noninverting input of comparator B; matches INA+ specs and noise performance. |
| 8 | REF | 1.182V reference output referenced to V−; sources ≤15µA, sinks ≤8µA; must not be bypassed. |
| 9 | V− | Negative supply input; connect to GND for single-supply operation; defines REF reference point. |
| 10 | INC− | Inverting input of comparator C; fully independent, matched offset and leakage to other inputs. |
| 11 | INC+ | Noninverting input of comparator C; supports same overvoltage tolerance (±0.3V beyond rails). |
| 12 | IND− | Inverting input of comparator D; shares same ESD protection and input capacitance (≈3pF). |
| 13 | IND+ | Noninverting input of comparator D; validated for operation with 100pF load at full temperature range. |
| 14 | GND | Ground connection; tied internally to V− for single-supply use; output swing referenced to this node. |
| 15 | OUTD | Comparator D output; identical electrical behavior to OUTA/OUTB/OUTC; supports same load conditions. |
| 16 | OUTC | Comparator C output; all four outputs are independently usable and do not share drive circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | <4µA per comparator enables >10-year battery life in 20µA average-load IoT sensors. |
| 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 | Prevents supply rail disturbance during output transitions, removing need for dedicated supply decoupling per comparator. |
| Rail-to-rail input range | Supports direct interface to 0V-referenced sensors (e.g., thermistors, current shunts) without level-shifting circuitry. |
| 40mA continuous output source | Drives multiple standard LEDs or logic gates without external transistor buffers, simplifying discrete component count. |
Applications
| Battery-Powered Threshold Detector | Quad Window Comparator |
|---|---|
|
Use Scenario: Monitoring lithium-ion cell voltage during charging/discharging to trigger under-voltage lockout (UVLO) and over-voltage protection (OVP) at precise thresholds. IC Role / Device Role / Timing Role: Each comparator independently compares cell voltage against reference-derived thresholds; REF provides stable 1.182V base for resistor-divider scaling. Use Value: Enables accurate 4.2V OVP and 2.8V UVLO with <4µA total quiescent draw, extending shelf life of portable medical devices. |
Use Scenario: Simultaneous monitoring of power supply rails (e.g., +3.3V, +5V, +12V) for "power-good" status across industrial PLC modules. IC Role / Device Role / Timing Role: Two comparators per rail (high/low threshold); MAX934CSE's four channels support two independent rails or one quad-window configuration. Use Value: Single-package solution replaces four discrete comparators + reference, reducing PCB area by 65% and eliminating inter-device matching drift. |
| Oscillator Circuit with Hysteresis | LED Bar-Graph Level Indicator |
|
Use Scenario: Building relaxation oscillators in energy-harvesting sensor nodes where supply voltage varies from 2.7V to 4.5V. IC Role / Device Role / Timing Role: One comparator configured as Schmitt trigger with external RC network; REF sets hysteresis center point. Use Value: Stable frequency generation across supply range due to ratiometric hysteresis design; no timing capacitor drift from supply variation. |
Use Scenario: Visual battery charge-level indication in handheld test equipment using four discrete LED segments. IC Role / Device Role / Timing Role: Four comparators each drive one LED via current-limiting resistor; REF establishes uniform 250mV step thresholds. Use Value: Direct LED drive capability eliminates four transistor drivers; 40mA source current ensures bright, consistent LED intensity at low supply voltages. |
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 |
|---|---|---|---|
| MAX934ESE | Same functionality and pinout; rated for −40°C to +85°C extended temperature range. | Required for automotive cabin modules or outdoor industrial controllers operating beyond 70°C. | Select MAX934ESE when ambient operating temperature exceeds +70°C; otherwise MAX934CSE suffices for commercial environments. |
| MAX924CSE | Quad comparator with 1% reference accuracy (vs. 2%); otherwise identical pinout, supply, and drive specs. | Used where tighter threshold stability is critical - e.g., precision battery fuel gauging or calibration references. | Choose MAX924CSE only if ±1% reference tolerance is mandatory; MAX934CSE offers 30% lower cost for general-purpose detection. |
Compared with MAX934ESE, the MAX934CSE trades extended temperature capability for lower unit cost and reduced qualification overhead; compared with MAX924CSE, it sacrifices reference accuracy for improved cost-efficiency in non-critical threshold applications.
Availability
MAX934CSE is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial power monitoring, and portable diagnostic equipment requiring stable component supply and long-lifecycle availability.
Supply support for MAX934CSE 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, with emphasis on low-power innovation.
The MAX931–MAX934 family was engineered specifically for micropower, single-supply comparator applications requiring integrated reference and robust output drive - targeting portable, battery-constrained systems.
FAQ
What is the maximum supply voltage for MAX934CSE in single-supply operation?
The MAX934CSE supports a single-supply voltage range of +2.5V to +11V. When operated with V− connected to GND (standard single-supply configuration), the absolute maximum rating for V+ to GND is +12V, but functional operation is guaranteed only up to +11V per the datasheet specifications. Exceeding +11V may cause parametric degradation or reliability risk.
Does MAX934CSE include an internal hysteresis pin like MAX931–MAX933?
No, the MAX934CSE does not feature a dedicated HYST pin. Unlike the MAX931–MAX933, hysteresis must be implemented externally using positive feedback resistors on each comparator input pair. This design allows independent hysteresis tuning per channel but requires additional passive components not needed in MAX931–MAX933 configurations.
Can MAX934CSE operate below 2.5V supply voltage?
The MAX934CSE is guaranteed to operate down to +2.5V. While comparator functionality may persist at lower voltages (e.g., 1V), the internal 1.182V reference ceases regulation below ~2.2V, and propagation delay increases significantly. For reliable operation with reference-based thresholds, maintain V+ ≥ 2.5V - confirmed in the Low-Voltage Operation section of the MAX934 datasheet.
What is the output voltage swing specification for MAX934CSE?
In single-supply mode (V− = GND), MAX934CSE outputs swing from GND to V+ − 0.4V (low state) and from GND + 0.4V to V+ (high state), meeting TTL/CMOS logic thresholds when V+ = 5V ±10%. Output swing is referenced to GND (pin 14), not V−, ensuring compatibility with standard digital interfaces without level translation.
Is MAX934CSE pin-compatible with any 1% reference alternatives?
Yes, the MAX934CSE is pin-compatible with the MAX924CSE, which offers identical quad-comparator functionality and 16-pin narrow SO packaging but features a 1% accurate internal reference. No PCB changes are required when upgrading from MAX934CSE to MAX924CSE for applications demanding tighter reference tolerance.
MAX934CSE 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:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX934CSE FAQ
1.How can I place an order for MAX934CSE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX934CSE 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 MAX934CSE reliable?
The price and inventory of MAX934CSE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX934CSE is usually 5 days.
3.What payment methods are accepted for MAX934CSE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX934CSE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX934CSE?
MAX934CSE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX934CSE 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 MAX934CSE?
For technical support, including MAX934CSE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX934CSE requirements.
6.How does Aetrix verify that MAX934CSE is sourced from the original manufacturer or authorized distributors?
All MAX934CSE 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 MAX934CSE meets industry standards.
7.What is the process for return or replacement of MAX934CSE?
All MAX934CSE units undergo pre-shipment inspection (PSI). If there is an issue with MAX934CSE, 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 MAX934CSE part is unused and in its original packaging.
Return procedure for MAX934CSE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX934CSE Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
