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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:4,150
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Product details
Overview
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 with TTL/CMOS-compatible outputs that source up to 40mA and sink ≥5mA, operates from +2.5V to +11V (or ±1.25V to ±5.5V), and supports input common-mode range from V− to V+ − 1.3V - ideal for battery-powered threshold detection and window monitoring.
For engineers reviewing the MAX934CSE+ datasheet, MAX934CSE+ pinout, MAX934CSE+ application, or MAX934CSE+ equivalent, key selection criteria include guaranteed 4µA max supply current over 0°C to +70°C, programmable hysteresis via external feedback, 12µs propagation delay (10mV overdrive), and compatibility with low-voltage operation down to 2.5V while maintaining reference stability.
Technical Context
The MAX934CSE+ integrates four independent comparators and a shared precision reference in a single 16-pin narrow SO package. Each comparator features rail-to-rail input capability (V− to V+ − 1.3V), output stages capable of continuous 40mA sourcing and >5mA sinking, and no crowbar current during transitions - eliminating supply-line glitches and parasitic feedback.
Unlike the MAX931–MAX933 family, the MAX934CSE+ lacks a dedicated HYST pin; hysteresis is implemented externally via positive feedback on each comparator. Its reference output (REF) is referenced to V−, not GND, and delivers 1.182V ±2% over 0°C to +70°C with ±15µA sourcing/sinking capability.
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 Current | ≤4µA max over 0°C to +70°C - ensures multi-year operation on coin-cell batteries in always-on sensing nodes. |
| Reference Voltage | 1.182V ±2% (0°C to +70°C), referenced to V− - provides stable threshold generation without external components. |
| Propagation Delay | 12µs typical at 10mV overdrive - balances speed and ultra-low power for slow-varying signals like battery voltage monitoring. |
| Input Common-Mode Range | V− to V+ − 1.3V - allows direct interface to sensors or dividers operating near ground or rail. |
| Output Drive | Sources 40mA continuously, sinks ≥5mA - drives LEDs, logic inputs, or small relays without external buffers. |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for industrial control panels and consumer electronics enclosures. |
Pinout & Package
MAX934CSE+ is housed in a 16-pin narrow SO (Small Outline) package with 0.150" body width and standard JEDEC MS-012AC footprint. Pin 1 is marked by a beveled corner or dot; pin numbering follows counterclockwise convention from top-left when viewed from component side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output: TTL/CMOS-compatible, swings V+ to GND; sources 40mA, sinks ≥5mA. |
| 2 | OUTA | Comparator A output: identical drive capability and swing range as OUTB. |
| 3 | V+ | Positive supply input: accepts +2.5V to +11V (single) or connects to +V rail (dual). |
| 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 (<±0.01nA at +25°C). |
| 6 | INB− | Inverting input of comparator B: electrically identical to INA−. |
| 7 | INB+ | Noninverting input of comparator B: matches INA+ performance and bias characteristics. |
| 8 | REF | Reference output: 1.182V ±2% w.r.t. V−; must not be bypassed; max load ±15µA. |
| 9 | V− | Negative supply: connect to GND for single-supply operation; defines REF reference point. |
| 10 | INC− | Inverting input of comparator C: fully independent, matched offset and noise performance. |
| 11 | INC+ | Noninverting input of comparator C: same input structure and leakage as other comparator inputs. |
| 12 | IND− | Inverting input of comparator D: supports same rail-to-rail input range and low bias current. |
| 13 | IND+ | Noninverting input of comparator D: functionally identical to INA+/INB+/INC+. |
| 14 | GND | Ground: connects internally to V− for single-supply configurations; required for output swing reference. |
| 15 | OUTD | Comparator D output: full 40mA source / ≥5mA sink capability; compatible with TTL/CMOS loads. |
| 16 | OUTC | Comparator C output: identical electrical behavior to OUTA/OUTB/OUTD. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ≤4µA max over full commercial temperature range - extends battery life in portable instrumentation and IoT edge nodes. |
| Integrated 1.182V ±2% reference | Eliminates need for external voltage reference IC or resistor divider, reducing BOM count and layout area. |
| No crowbar switching current | Prevents supply rail disturbance during output transitions - improves system stability without mandatory bypass capacitors. |
| 40mA continuous output source | Directly drives LEDs, optocouplers, or logic gates without external transistors - simplifies level-shifting circuits. |
| Rail-to-rail input range | V− to V+ − 1.3V - enables accurate detection of signals near ground or supply rails in single-supply applications. |
Applications
| Battery Voltage Monitor | Window Detector (UV/OV) |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles in handheld medical devices. IC Role / Device Role / Timing Role: Quad comparator configures two independent thresholds (e.g., 3.0V undervoltage, 4.2V overvoltage) using REF and resistor dividers. Use Value: Single MAX934CSE+ replaces four discrete comparators and one reference IC, cutting PCB area by >60% and enabling 10-year coin-cell operation. |
Use Scenario: Validating regulated 5V supply integrity in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Two comparators monitor upper/lower bounds; third implements hysteresis; fourth generates "power-good" AND logic. Use Value: Built-in 40mA drive eliminates external pull-up resistors and logic gates, reducing component count and improving response time to supply faults. |
| Auto-Shutoff Power Switch | LED Bar-Graph Level Indicator |
|
Use Scenario: Enabling timed shutdown of auxiliary circuits after user inactivity in smart home hubs. IC Role / Device Role / Timing Role: One comparator acts as timer trigger using RC network on IN+; output controls MOSFET gate directly. Use Value: 40mA source capability drives gate capacitance without buffer; 4µA quiescent current ensures <1µA standby draw when off. |
Use Scenario: Visualizing analog sensor output (e.g., pressure, light) in HVAC control panels. IC Role / Device Role / Timing Role: Four comparators compare sensor-derived voltage against stepped thresholds generated from REF and resistor ladder. Use Value: Direct LED drive capability eliminates 4x current-limiting transistors; REF-based scaling ensures consistent brightness across temperature. |
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, but rated for −40°C to +85°C extended temperature range. | Suitable for automotive under-hood or outdoor industrial deployments where ambient exceeds +70°C. | Select MAX934ESE+ when operating outside 0°C–+70°C; otherwise MAX934CSE+ offers lower cost and same performance. |
| MAX924CSE+ | Quad comparator with 1% reference accuracy (vs. 2%); otherwise identical pinout, supply, and drive specs. | Required where threshold precision exceeds ±2% tolerance, e.g., high-accuracy battery fuel gauging or calibration references. | Choose MAX924CSE+ only if reference accuracy is critical; MAX934CSE+ remains optimal for cost-sensitive, general-purpose detection. |
Compared with MAX934CSE+, MAX934ESE+ adds extended temperature support without changing layout or firmware, while MAX924CSE+ trades higher reference accuracy for increased cost - making MAX934CSE+ the optimal choice for commercial-grade, cost-conscious designs requiring proven 2% stability.
Availability
MAX934CSE+ is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and oscillator circuits requiring stable component supply with guaranteed commercial-temperature performance.
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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX931–MAX934 product line was engineered for ultra-low-power, low-cost comparator applications requiring integrated voltage references - targeting portable instrumentation, energy harvesting systems, and always-on sensor interfaces.
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− tied to GND, the absolute maximum rating for V+ to GND is +12V, but functional operation is guaranteed only up to +11V per the datasheet's Electrical Characteristics table. Exceeding +11V may degrade reference accuracy or increase quiescent current beyond specification.
Does MAX934CSE+ have an internal hysteresis pin like MAX931–MAX933?
No, the MAX934CSE+ does not include a HYST pin. Hysteresis must be implemented externally using positive feedback resistors on each comparator input pair, as shown in Figure 4 of the MAX934 datasheet. This differs from the MAX931/MAX932/MAX933, which feature a dedicated HYST terminal for simplified hysteresis programming.
Can MAX934CSE+ operate from a 3V supply while maintaining reference stability?
Yes, the MAX934CSE+ functions reliably at +3V supply. The internal 1.182V reference remains stable and accurate (±2%) down to ~2.2V supply; below that, reference regulation degrades. At +3V, supply current is ≤3.0µA (typical), propagation delay increases to ~14µs, and output drive remains sufficient for most logic and LED loads.
What is the output voltage swing of MAX934CSE+ comparators?
Each comparator output (OUTA–OUTD) swings from V+ to GND in single-supply mode (V− = GND). With V+ = 5V, VOH is typically V+ − 0.4V (4.6V min), and VOL is GND + 0.4V (0.4V max) at 1.8mA sink. This ensures robust TTL/CMOS compatibility without level-shifting circuitry.
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 package but with 1% reference accuracy. No PCB changes are required when upgrading for tighter threshold tolerance - only firmware or resistor-divider recalibration may be needed to leverage the improved reference precision.
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:
- Active
- 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.
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