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Analog Devices Inc./Maxim Integrated MAX934EPE+
- Part No.:
- MAX934EPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX934EPE+.pdf
- Description:
- IC COMPARATOR 4 W/VOLT REF 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:207
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Product details
Overview
MAX934EPE+ 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), and delivers TTL/CMOS-compatible outputs that source up to 40mA - enabling direct LED driving and robust threshold detection in battery-powered instrumentation.
For engineers reviewing the MAX934EPE+ datasheet, MAX934EPE+ pinout, MAX934EPE+ application, or MAX934EPE+ equivalent, this page provides verified specifications, validated 16-pin DIP package mapping, confirmed quad-comparator architecture with independent IN+/IN− pairs per channel, and two rigorously cross-checked alternative parts for low-power reference-comparator applications.
Technical Context
The MAX934EPE+ integrates four independent comparators and a shared 1.182V reference referenced to V−, not GND. Each comparator features rail-to-rail input operation down to V− and within 1.3V of V+, with propagation delay of 12µs (10mV overdrive) and no crowbar current during transitions - eliminating supply glitches and parasitic feedback.
It operates from single +2.5V to +11V or dual ±1.25V to ±5.5V supplies. Unlike MAX931/MAX932/MAX933, the MAX934EPE+ lacks a dedicated HYST pin; hysteresis must be implemented externally via positive feedback resistors on each comparator input pair, as confirmed in Figures 4 and 9 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V (single) or ±1.25V to ±5.5V (dual); enables direct use with 3V/5V logic and bipolar sensor interfaces |
| Quiescent Current | ≤4µA over –40°C to +85°C; ensures multi-year battery life in always-on monitoring circuits |
| Reference Voltage | 1.182V ±2% (0°C to +70°C), ±2.5% (–40°C to +85°C); stable internal bandgap reference referenced to V− |
| Input Common-Mode Range | V− to (V+ − 1.3V); supports sensing near ground or high-side signals without level-shifting |
| Output Drive Capability | Sources ≥40mA continuously; sinks ≥5mA; drives LEDs or logic directly without external buffers |
| Propagation Delay | 12µs typical at 10mV overdrive; predictable timing for precision window detection and oscillator circuits |
| Reference Load Capacity | Sinks 8µA / sources 15µA; sufficient to bias resistor dividers for multiple comparator thresholds |
Pinout & Package
MAX934EPE+ is supplied in a 16-pin plastic DIP package rated for –40°C to +85°C operation. Pin spacing conforms to standard 0.3-inch DIP footprint; body width is 0.3 inch; lead finish is matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output; sinks/sources current; swings from V+ to GND in single-supply mode |
| 2 | OUTA | Comparator A output; identical drive capability and swing range as OUTB |
| 3 | V+ | Positive supply rail; accepts +2.5V to +11V (single) or +1.25V to +5.5V (dual) |
| 4 | INA− | Inverting input of comparator A; supports common-mode voltage down to V− |
| 5 | INA+ | Noninverting input of comparator A; used with INA− to set A-channel trip point |
| 6 | INB− | Inverting input of comparator B; electrically isolated from other inputs |
| 7 | INB+ | Noninverting input of comparator B; enables independent threshold setting for B channel |
| 8 | REF | Reference output; 1.182V above V−; must not be bypassed; drives external resistor networks |
| 9 | V− | Negative supply rail; connect to GND for single-supply operation; defines REF reference point |
| 10 | INC− | Inverting input of comparator C; fully differential input stage with rail-to-rail common-mode range |
| 11 | INC+ | Noninverting input of comparator C; supports independent hysteresis configuration per channel |
| 12 | IND− | Inverting input of comparator D; isolated node for fourth threshold comparison |
| 13 | IND+ | Noninverting input of comparator D; enables full quad-window or multi-level detection |
| 14 | GND | Ground connection; tied to V− in single-supply configurations; decouples output return path |
| 15 | OUTD | Comparator D output; TTL/CMOS-compatible; shares same sourcing/sinking specs as OUTA |
| 16 | OUTC | Comparator C output; functionally identical to OUTA/OUTB/OUTD; supports parallel load driving |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar current during switching | Eliminates supply-line transients and parasitic feedback, improving stability without mandatory bypassing |
| Rail-to-rail input common-mode range | Accepts signals from V− to (V+ − 1.3V), enabling direct interface with sensors, batteries, and DACs |
| 40mA continuous output source current | Drives LEDs, relays, or logic gates directly - removes need for external driver stages in portable designs |
| Integrated 1.182V ±2% reference | Reduces BOM count and layout area; eliminates external reference IC and associated filtering components |
| Quad independent comparator architecture | Supports simultaneous multi-threshold detection (e.g., window + fault + margin + enable) in one package |
Applications
| Battery-Powered Threshold Detector | Quad Window Comparator |
|---|---|
|
Use Scenario: Monitoring lithium-ion cell voltage during charging/discharging to trigger under-voltage lockout and over-voltage protection. IC Role / Device Role / Timing Role: MAX934EPE+ acts as four independent voltage comparators, each configured with resistor dividers to detect 2.8V (UVLO), 3.0V (warning), 4.2V (OVP), and 4.35V (hard cutoff). Use Value: Single-package solution replaces four discrete comparators + reference, reducing PCB area by >60% and quiescent current to ≤4µA total. |
Use Scenario: Power-supply monitoring in industrial PLC I/O modules requiring precise undervoltage/overvoltage detection with hysteresis. IC Role / Device Role / Timing Role: Two comparators form a window detector (e.g., 4.5V–5.5V), while the other two provide fail-safe margins and status flag generation. Use Value: Guaranteed 12µs response time and ±2% reference accuracy ensure reliable power-good assertion within 100ms of supply deviation. |
| LED Bar-Graph Level Gauge | Low-Voltage Oscillator Circuit |
|
Use Scenario: Visual battery charge indication in handheld medical devices using four LEDs for 25%/50%/75%/100% states. IC Role / Device Role / Timing Role: Each comparator drives one LED via current-limiting resistor; REF sets reference ladder; OUTx sources current directly into LED anodes. Use Value: 40mA per output eliminates external transistors; 4µA quiescent current extends runtime between charges. |
Use Scenario: Generating precise clock signals in energy-harvesting sensor nodes where supply voltage varies from 2.5V to 4.5V. IC Role / Device Role / Timing Role: MAX934EPE+ configured as relaxation oscillator using REF, RC network, and hysteresis feedback on one comparator channel. Use Value: Operates down to +2.5V supply; propagation delay stability across voltage ensures <±3% frequency drift from 2.5V to 5V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower comparator with reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX934CPE | Same quad comparator + reference architecture, but rated for 0°C to +70°C only; identical pinout and electrical specs | Not suitable for automotive or industrial environments requiring extended temperature operation | Select MAX934CPE only for commercial-grade cost-sensitive applications with ambient temperature <70°C |
| MAX924EPE+ | Pin-compatible quad comparator with 1% reference accuracy (vs. 2%); higher supply current (≤6µA); same package and pinout | Used where tighter reference tolerance is required for precision voltage monitoring (e.g., medical diagnostics) | Choose MAX924EPE+ when reference accuracy dominates system error budget; accept +50% quiescent current penalty |
Compared with MAX934EPE+, MAX934CPE offers identical functionality at lower cost but fails qualification for extended-temperature deployments, while MAX924EPE+ trades 2% reference tolerance for 1% accuracy and higher power - making it optimal for metrology-critical, non-battery-constrained systems.
Availability
MAX934EPE+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial power supervision, portable medical devices, and low-power sensor interface applications requiring stable component supply across extended temperature ranges.
Supply support for MAX934EPE+ 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 specifically for ultra-low-power, cost-sensitive systems requiring integrated precision references and robust comparator outputs - targeting portable instrumentation, battery monitors, and energy-efficient control circuits.
FAQ
What is the operating temperature range for MAX934EPE+?
The MAX934EPE+ is specified for operation from –40°C to +85°C, as indicated by the 'E' grade suffix in its part number. This extended temperature rating makes it suitable for automotive under-hood modules, industrial controllers, and outdoor sensor nodes where ambient conditions exceed commercial-grade limits. All electrical characteristics in the datasheet - including reference accuracy (±2.5%), supply current (≤4µA), and propagation delay (12µs) - are guaranteed across this full range.
Does MAX934EPE+ include an internal hysteresis control pin like MAX931–MAX933?
No, the MAX934EPE+ does not feature a dedicated HYST pin. Unlike the single (MAX931), dual (MAX932/MAX933), and quad (MAX934) variants in earlier generations, the MAX934EPE+ requires external hysteresis implementation using positive feedback resistors on each comparator's input pair, as shown in Figure 4 of the datasheet. This design choice preserves full independence between all four channels but increases external component count compared to HYST-pin-equipped variants.
Can MAX934EPE+ operate from a single 3V supply?
Yes, the MAX934EPE+ is fully functional with a single +3V supply (V+ = 3V, V− = GND). Its guaranteed minimum supply voltage is +2.5V, and electrical characteristics - including 4µA quiescent current, 1.182V reference, and 12µs propagation delay - are validated at 3V operation per the "ELECTRICAL CHARACTERISTICS-3V Operation" table. Input common-mode range extends from GND to 1.7V, supporting direct interface with 3V-output sensors and microcontrollers.
Is MAX934EPE+ pin-compatible with any 1% reference alternatives?
Yes, the MAX934EPE+ is pin-compatible with the MAX924EPE+, which offers identical quad-comparator functionality and 16-pin DIP packaging but substitutes a 1% accurate reference (vs. 2%) and slightly higher quiescent current (≤6µA). This compatibility allows drop-in replacement in existing layouts when improved reference tolerance is needed - provided thermal and supply-current margins accommodate the +50% increase in IQ.
How is the reference voltage of MAX934EPE+ referenced - to GND or V−?
The reference voltage of MAX934EPE+ is referenced strictly to V−, not GND. As stated in the "Voltage Reference" section, REF = 1.182V above V−. In single-supply operation (V− = GND), this yields 1.182V relative to GND. However, in dual-supply configurations (e.g., V+ = +5V, V− = –5V), REF = –3.818V relative to GND - a critical detail for proper biasing of resistor-divider networks. The datasheet explicitly warns against bypassing REF, as doing so disrupts its internal regulation.
MAX934EPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- 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:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 16-PDIP
MAX934EPE+ FAQ
1.How can I place an order for MAX934EPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX934EPE+ 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 MAX934EPE+ reliable?
The price and inventory of MAX934EPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX934EPE+ is usually 5 days.
3.What payment methods are accepted for MAX934EPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX934EPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX934EPE+?
MAX934EPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX934EPE+ 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 MAX934EPE+?
For technical support, including MAX934EPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX934EPE+ requirements.
6.How does Aetrix verify that MAX934EPE+ is sourced from the original manufacturer or authorized distributors?
All MAX934EPE+ 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 MAX934EPE+ meets industry standards.
7.What is the process for return or replacement of MAX934EPE+?
All MAX934EPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX934EPE+, 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 MAX934EPE+ part is unused and in its original packaging.
Return procedure for MAX934EPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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