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Analog Devices Inc./Maxim Integrated MAX9141ESA+
- Part No.:
- MAX9141ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9141ESA+.pdf
- Description:
- IC COMPARATOR 1 W/LATCH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:610
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Product details
Overview
The MAX9141ESA+ from Analog Devices is a single high-speed rail-to-rail input comparator with latch enable and shutdown functionality, optimized for 3V/5V systems. It delivers 40ns propagation delay, 150μA supply current per comparator at 3V, and 500μV offset voltage, enabling precise threshold detection in battery-powered instrumentation and line receivers.
For engineers reviewing the MAX9141ESA+ datasheet, MAX9141ESA+ pinout, MAX9141ESA+ application, or MAX9141ESA+ equivalent, key selection criteria include latch-controlled sampling timing, shutdown current reduction to 12μA, rail-to-rail input operation beyond supply rails, and CMOS/TTL-compatible output swing within 300mV of VCC/GND.
Technical Context
The MAX9141ESA+ implements a bipolar process comparator core with internal 1.5mV hysteresis to suppress oscillation during slow input transitions. Its input stage tolerates continuous short-circuit faults to either rail and supports common-mode voltages from –0.2V to VCC + 0.2V.
The device integrates two digital control functions: LE (latch enable) provides transparent/latched output operation with 16ns setup/hold time, and SHDN (shutdown) reduces ICC to ≤30μA while placing the output in high-impedance state - both pins accept logic levels from 0V to VCC with ≤10μA input current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - enables reliable sampling of >10MHz signals in zero-crossing or clock recovery circuits |
| Supply Current | 150μA per comparator at 3V - supports multi-year battery life in portable threshold detectors |
| Input Offset Voltage | 0.5–2.0mV (typ) - ensures sub-millivolt accuracy in precision reference comparison |
| Rail-to-Rail Input Range | –0.2V to VCC + 0.2V - allows direct interface to sensors operating below GND or above VCC |
| Output Swing | VOL = 0.3V / VOH = VCC – 0.3V at 4mA - drives CMOS/TTL logic without external pull-ups |
| Shutdown Current | 12–30μA - reduces system standby power by >90% versus active mode |
| Latch Propagation Delay | 60ns - defines minimum valid data window for synchronized sampling applications |
Pinout & Package
MAX9141ESA+ is housed in an 8-pin SO (Small Outline) package with 150mil body width and standard 1.27mm pitch. Pin 1 is marked with a beveled corner or dot; the package is RoHS-compliant and rated for –40°C to +85°C (E grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N.C.) | No Connection | Not internally bonded - must remain unconnected on PCB |
| 2 (OUT) | Comparator Output | CMOS/TTL-compatible push-pull output; sinks 4mA / sources 4mA |
| 3 (GND) | Ground Reference | Primary return path for supply and signal currents; requires low-inductance connection |
| 4 (LE) | Latch Enable Input | High-impedance digital control: high = transparent, low = latched output state |
| 5 (SHDN) | Shutdown Input | High-impedance digital control: high = active, low = shutdown (ICC ≤30μA, output Hi-Z) |
| 6 (IN–) | Inverting Input | Differential input terminal with ±20mA fault tolerance and rail-to-rail common-mode range |
| 7 (IN+) | Noninverting Input | Differential input terminal with same protection and voltage range as IN– |
| 8 (VCC) | Positive Supply | Accepts 2.7V–5.5V; requires local 0.1μF ceramic decoupling capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Internal 1.5mV Hysteresis | Eliminates need for external feedback resistors while ensuring clean switching on noisy or slow-moving inputs |
| Latch Function (LE pin) | Enables synchronous sampling of analog events with deterministic timing control and no metastability risk |
| Shutdown Mode (SHDN pin) | Reduces total system quiescent current by >90%, critical for intermittent-sensing IoT nodes |
| Rail-to-Rail Input Operation | Supports sensor interfaces where signal swings below GND or above VCC (e.g., thermocouples, current shunts) |
| CMOS/TTL-Compatible Outputs | Drives logic families directly without level-shifting or pull-up resistors, simplifying BOM and layout |
Applications
| Line Receivers | Battery-Powered Systems |
|---|---|
Use Scenario: Receiving differential signals over coaxial or twisted-pair lines in industrial communication interfaces. IC Role / Device Role / Timing Role: Comparator acts as high-speed line receiver with hysteresis to reject noise-induced false triggering. Use Value: 40ns propagation delay and rail-to-rail input allow accurate reconstruction of fast-edged line signals up to 10Mbps. | Use Scenario: Monitoring battery voltage against programmable thresholds in portable medical devices or wearables. IC Role / Device Role / Timing Role: Threshold detector that triggers low-power wake-up or shutdown sequences. Use Value: 150μA supply current and shutdown mode (<30μA) extend battery life while maintaining responsive voltage monitoring. |
| Zero-Crossing Detectors | Sampling Circuits |
Use Scenario: Detecting AC waveform zero crossings for phase-controlled dimmers or motor commutation. IC Role / Device Role / Timing Role: Precision zero-crossing comparator with low offset and internal hysteresis to prevent chatter near zero. Use Value: 500μV offset voltage and 1.5mV hysteresis ensure stable, jitter-free zero-crossing pulses even with low-amplitude inputs. | Use Scenario: Capturing analog event timing in data acquisition systems using external clock synchronization. IC Role / Device Role / Timing Role: Latched comparator capturing instantaneous input state on LE edge for deterministic sampling. Use Value: 16ns latch setup/hold time and 60ns latch propagation delay enable sub-100ns timing resolution in sampled systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9141EKA+ | Same electrical specs but in 8-pin SOT23 package (smaller footprint, higher thermal resistance) | Better suited for space-constrained PCBs where SO package height or thermal mass is problematic | Select EKA+ for compact layouts; ESA+ preferred when board-level thermal management or hand-soldering is required |
| TLV3501CD | 4.5ns propagation delay, 2.9mA supply current, no latch/shutdown, 2.7–5.5V operation | Higher speed but significantly higher power; lacks digital control features needed for power-gated systems | Choose TLV3501CD only when raw speed dominates; MAX9141ESA+ remains optimal for low-power, feature-rich designs |
Compared with MAX9141EKA+, the MAX9141ESA+ offers identical performance in a larger SO package with better thermal dissipation and solderability. Against TLV3501CD, it trades raw speed for 95% lower supply current and integrated latch/shutdown - essential for battery-operated or event-triggered systems.
Availability
MAX9141ESA+ is available at Aetrix Electronics and suitable for line receivers, battery-powered instrumentation, zero-crossing detection, and latched sampling circuits requiring stable component supply across industrial temperature ranges.
Supply support for MAX9141ESA+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX9141ESA+ belongs to the MAX914x family of rail-to-rail, low-power comparators designed specifically for 3V/5V battery-operated and noise-immune interface applications requiring latch control and shutdown capability.
FAQ
What is the maximum supply voltage rating for the MAX9141ESA+?
The MAX9141ESA+ has an absolute maximum supply voltage (VCC to GND) of +6V. However, its specified operating range is 2.7V to 5.5V. Operating outside the 2.7V–5.5V range may cause parametric degradation or reliability issues, and the MAX9141ESA+ is not guaranteed to meet specifications beyond this window.
Does the MAX9141ESA+ require external pull-up resistors on its output?
No, the MAX9141ESA+ does not require external pull-up resistors. Its push-pull output stage drives high to within 0.3V of VCC and low to within 0.3V of GND at 4mA load, making it fully compatible with CMOS and TTL logic families without additional components.
How does the latch function operate on the MAX9141ESA+?
The MAX9141ESA+ latch operates via the LE pin: when LE is high, the output follows the comparator input in real time (transparent mode); when LE is driven low, the current output state is held until LE returns high. The MAX9141ESA+ specifies 16ns setup/hold time and 60ns latch propagation delay for deterministic timing control.
What happens to the output during shutdown mode of the MAX9141ESA+?
When the SHDN pin of the MAX9141ESA+ is driven low, the device enters shutdown mode: supply current drops to ≤30μA, and the output enters a high-impedance (Hi-Z) state. This allows multiple MAX9141ESA+ devices to share a common bus without contention, and eliminates loading on downstream logic.
Is the MAX9141ESA+ suitable for automotive applications?
The MAX9141ESA+ is not AEC-Q100 qualified. Only the MAX9140AAXK/V+T variant is explicitly AEC-Q100 qualified per the datasheet. For automotive use, designers must select that specific variant or perform full qualification testing - the MAX9141ESA+ is rated for industrial temperature range (–40°C to +85°C) only.
MAX9141ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- with Latch
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 2mV @ 5V
- Voltage - Input Offset (Max):
- 0.32µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 320µA
- Current - Quiescent (Max):
- 81.94dB CMRR, 81.94dB PSRR
- CMRR, PSRR (Typ):
- 40ns
- Propagation Delay (Max):
- 1.5mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX9141ESA+ FAQ
1.How can I place an order for MAX9141ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9141ESA+ 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 MAX9141ESA+ reliable?
The price and inventory of MAX9141ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9141ESA+ is usually 5 days.
3.What payment methods are accepted for MAX9141ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9141ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9141ESA+?
MAX9141ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9141ESA+ 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 MAX9141ESA+?
For technical support, including MAX9141ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9141ESA+ requirements.
6.How does Aetrix verify that MAX9141ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX9141ESA+ 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 MAX9141ESA+ meets industry standards.
7.What is the process for return or replacement of MAX9141ESA+?
All MAX9141ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9141ESA+, 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 MAX9141ESA+ part is unused and in its original packaging.
Return procedure for MAX9141ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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