My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX934CSE+T
- Part No.:
- MAX934CSE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX934CSE+T.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,484
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX934CSE+T from Maxim Integrated is a quad micropower comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis, and TTL/CMOS-compatible outputs that source up to 40mA and sink ≥5mA. It operates from +2.5V to +11V single supply (or ±1.25V to ±5.5V dual supply), features rail-to-rail input range down to V− and within 1.3V of V+, and draws ≤4µA quiescent current at +25°C - ideal for battery-powered threshold detection and window comparator circuits.
For engineers reviewing the MAX934CSE+T datasheet, MAX934CSE+T pinout, MAX934CSE+T application, or MAX934CSE+T equivalent, key selection considerations include its 16-pin narrow SO package, commercial temperature range (0°C to +70°C), guaranteed 12µs propagation delay at 10mV overdrive, internal reference referenced to V− (not GND), and pin compatibility with MAX924 for 1% reference upgrade paths.
Technical Context
The MAX934CSE+T integrates four independent comparators and one shared 1.182V ±2% reference in a single IC. Each comparator's input common-mode range extends from V− to (V+ − 1.3V), supporting operation near supply rails. Its output stage eliminates crowbar current during transitions, minimizing parasitic supply feedback and enabling stable performance without strict layout constraints.
Hysteresis is implemented externally via positive feedback (unlike MAX931–MAX933's HYST pin); the device supports low-voltage operation down to +1V total supply (though reference ceases below ~2.2V). Propagation delay increases and output drive degrades below 2.5V, as confirmed in Typical Operating Characteristics graphs for response time vs. supply voltage.
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 Current | ≤4µA at +25°C - allows multi-year operation on coin-cell batteries in always-on monitoring systems |
| 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 - ensures timely response in alarm and oscillator applications |
| Output Drive | Sources ≥40mA continuously into V+; sinks ≥5mA to GND - directly drives LEDs, small relays, or logic inputs without buffers |
| Input Common-Mode Range | V− to (V+ − 1.3V) - supports sensing signals near ground or high-side rails in single-supply systems |
| Operating Temperature | 0°C to +70°C (Commercial grade) - suitable for consumer, industrial control, and embedded instrumentation |
Pinout & Package
MAX934CSE+T is housed in a 16-pin narrow SO (Small Outline) package, 3.9mm width, with standard JEDEC MS-012AC footprint and gull-wing leads. Pin 1 marked by notch or dot; pin count increases counter-clockwise.
| Pin | 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 rail: accepts +2.5V to +11V (single) or connects to +V in dual supply |
| 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, 15µA source / 8µA sink capability |
| 9 | V− | Negative supply rail: connect to GND for single-supply operation; sets reference and input common-mode baseline |
| 10 | INC− | Inverting input of comparator C: fully independent, same specs as INA−/INB− |
| 11 | INC+ | Noninverting input of comparator C: matched pair with INC− |
| 12 | IND− | Inverting input of comparator D: fourth independent channel, rail-to-rail input capable |
| 13 | IND+ | Noninverting input of comparator D: completes quad comparator set |
| 14 | GND | Ground connection: tied to V− internally for single-supply use; separates output driver ground from V− in dual-supply mode |
| 15 | OUTD | Comparator D output: identical electrical behavior to OUTA/OUTB |
| 16 | OUTC | Comparator C output: fourth TTL/CMOS output, full sourcing/sinking capability |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar output switching | Eliminates supply-line glitches during output transitions, reducing need for heavy bypassing and improving noise immunity |
| Rail-to-rail input range | Accepts signals from V− to (V+ − 1.3V), enabling direct interface with sensors, battery monitors, and DAC outputs |
| Integrated 1.182V reference | ±2% accuracy over 0°C to +70°C, referenced to V− - removes need for external precision reference in threshold circuits |
| 40mA continuous source current | Drives LEDs, optocouplers, or logic gates directly without external transistors or drivers |
| Quad independent comparators | Four fully isolated channels share one reference, enabling compact window detectors, level gauges, or multi-threshold alarms |
Applications
| Battery-Powered Threshold Detection | Window Comparator for Power Monitoring |
|---|---|
Use Scenario: Detecting low-battery condition in portable medical devices using a single 3V coin cell. IC Role / Device Role / Timing Role: MAX934CSE+T compares battery voltage against 2.4V and 2.6V thresholds using resistor dividers and its internal 1.182V reference. Use Value: 4µA quiescent current extends battery life beyond 5 years; rail-to-rail inputs ensure accurate sensing down to 2.5V supply. |
Use Scenario: Monitoring 5V system rail for undervoltage (4.5V) and overvoltage (5.5V) in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Two comparators (A/B) configured as window detector; third (C) generates power-good signal via AND gate. Use Value: Internal reference eliminates component count; 12µs propagation delay ensures fast fault response before downstream damage occurs. |
| Oscillator Circuit with Hysteresis | LED Bar-Graph Level Indicator |
Use Scenario: Generating precise timing waveforms in low-power sensor nodes using relaxation oscillator topology. IC Role / Device Role / Timing Role: One comparator (A) with RC network and positive feedback forms astable multivibrator; REF provides stable trip point. Use Value: Programmable hysteresis via external resistors enables predictable frequency tuning; ultra-low supply current minimizes oscillator overhead. |
Use Scenario: Visual battery charge level display in handheld test equipment with four-segment LED bar graph. IC Role / Device Role / Timing Role: All four comparators drive individual LEDs through current-limiting resistors, each triggered at 25%, 50%, 75%, and 100% of full-scale input. Use Value: 40mA source capability per output eliminates external drivers; shared REF ensures consistent threshold scaling across all segments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX924CSE+T | 1% reference accuracy (vs. 2%), otherwise identical pinout, specs, and package | Required where tighter threshold tolerance is critical (e.g., precision power sequencing) | Select when ±1% reference drift is mandatory; no PCB changes needed |
| TLV3704CDR | Lower supply current (1.6µA), no internal reference, rail-to-rail output (not input), SO-14 package | Suitable only when external reference is available and input range above V− is not required | Choose for ultra-low-power designs where reference is provided elsewhere and cost is prioritized over integration |
Compared with MAX934CSE+T, MAX924CSE+T offers higher reference precision without layout or firmware changes, while TLV3704CDR reduces quiescent current but sacrifices integrated reference and input range - making it a trade-off between integration and power efficiency.
Availability
MAX934CSE+T is available at Aetrix Electronics and suitable for battery-powered systems, power-rail monitoring, oscillator circuits, and LED-driven instrumentation requiring stable component supply across production lifecycles.
Supply support for MAX934CSE+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, and interface applications, with emphasis on low-power, high-reliability solutions for industrial and portable systems.
The MAX931–MAX934 family was engineered specifically for micropower comparator applications demanding integrated reference, rail-to-rail inputs, and robust output drive - targeting battery-operated instrumentation, safety-critical monitoring, and space-constrained embedded controls.
FAQ
What is the operating temperature range for MAX934CSE+T?
The MAX934CSE+T is specified for the commercial temperature range of 0°C to +70°C. This is confirmed in the Ordering Information table, where "C" in the part number denotes Commercial grade. The device is packaged in a 16-pin narrow SO and rated for reliable operation across this full range under recommended supply and load conditions.
Does MAX934CSE+T include an internal voltage reference?
Yes, MAX934CSE+T integrates a 1.182V ±2% bandgap voltage reference referenced to V−. It is specified over 0°C to +70°C and capable of sourcing 15µA or sinking 8µA. The reference is shared across all four comparators and appears on Pin 8 (REF); it must not be bypassed per the Applications Information section.
How many comparators does MAX934CSE+T contain, and what are their output characteristics?
MAX934CSE+T contains four independent comparators (A, B, C, D). Each output (Pins 1, 2, 15, 16) is TTL/CMOS-compatible, swings from V+ to GND in single-supply mode, and can continuously source ≥40mA or sink ≥5mA. No crowbar current is generated during transitions, eliminating supply-line glitches.
Is MAX934CSE+T pin-compatible with any other Maxim comparators?
Yes, MAX934CSE+T is pin-compatible with MAX924CSE+T, which features a 1% accurate reference instead of 2%. This is explicitly stated in the datasheet: "The MAX931, MAX933, and MAX934 are pin-compatible with the 1% accurate MAX921, MAX923, and MAX924, respectively." No PCB redesign is required for migration.
What is the minimum supply voltage at which MAX934CSE+T remains functional?
MAX934CSE+T guarantees operation down to +2.5V (or ±1.25V). Below that, comparator functionality persists down to +1V total supply, but the internal reference ceases to regulate below ~2.2V. Propagation delay increases and output drive degrades at low voltages, as shown in Figures TOC15 and TOC16 of the datasheet.
MAX934CSE+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:
- 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+T FAQ
1.How can I place an order for MAX934CSE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX934CSE+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 MAX934CSE+T reliable?
The price and inventory of MAX934CSE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX934CSE+T is usually 5 days.
3.What payment methods are accepted for MAX934CSE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX934CSE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX934CSE+T?
MAX934CSE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX934CSE+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 MAX934CSE+T?
For technical support, including MAX934CSE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX934CSE+T requirements.
6.How does Aetrix verify that MAX934CSE+T is sourced from the original manufacturer or authorized distributors?
All MAX934CSE+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 MAX934CSE+T meets industry standards.
7.What is the process for return or replacement of MAX934CSE+T?
All MAX934CSE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX934CSE+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 MAX934CSE+T part is unused and in its original packaging.
Return procedure for MAX934CSE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX934CSE+T 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…
