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Analog Devices Inc./Maxim Integrated MAX9141ESA+T
- Part No.:
- MAX9141ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9141ESA+T.pdf
- Description:
- IC COMPARATOR 1 W/LATCH 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,245
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Product details
Overview
The MAX9141ESA+T 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 typical offset voltage. It operates across –40°C to +85°C and interfaces directly with CMOS/TTL logic in battery-powered instrumentation and line-receiver circuits.
For engineers reviewing the MAX9141ESA+T datasheet, MAX9141ESA+T pinout, MAX9141ESA+T application, or MAX9141ESA+T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative comparators for 3V/5V low-power high-speed threshold detection.
Technical Context
The MAX9141ESA+T implements a bipolar-input comparator core with internal 1.5mV hysteresis to suppress oscillation during slow or noisy transitions. Its rail-to-rail input stage accepts common-mode voltages from –0.2V to VCC + 0.2V, while its current-driven output stage swings within 300mV of either rail without external pull-ups.
Latch and shutdown are controlled via dedicated LE and SHDN pins: LE enables transparent operation when high and latches output when low (with 45ns minimum pulse width); SHDN reduces supply current to <12μA and places output in high-impedance state when driven low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 40ns at 10mV overdrive - enables reliable sampling of >10MHz signals in timing-critical discriminators. |
| Supply Current | 150μA per comparator at 3V - supports multi-year battery life in portable 3V sensor nodes. |
| Input Offset Voltage | 0.5–2.0mV (typ) - ensures sub-millivolt threshold accuracy in precision zero-crossing detectors. |
| Rail-to-Rail Input Range | –0.2V to VCC + 0.2V - allows direct interface to sensors or DACs operating beyond supply rails. |
| Output Swing | VOL = 0.3V / VOH = VCC – 0.3V at 4mA - guarantees clean CMOS/TTL logic-level compatibility without level shifters. |
| Hysteresis | 1.5mV input-referred - eliminates false triggering from noise on slow-moving inputs like thermistor outputs. |
| Shutdown Current | <12μA - enables ultra-low-power sleep modes in always-on monitoring systems. |
Pinout & Package
MAX9141ESA+T is housed in an 8-pin SO (Small Outline) package with 150mil body width and standard JEDEC MO-002AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N.C. | No internal connection - must be left floating or tied to GND; no routing or loading required. |
| 2 | OUT | Open-drain compatible CMOS/TTL output - sinks up to 4mA, sources minimal current; requires pull-up only if driving legacy TTL. |
| 3 | GND | Analog/digital ground reference - must connect to low-impedance system ground plane to maintain 40ns timing integrity. |
| 4 | LE | Latch Enable input - high-impedance CMOS control; latches output when pulled low; transparent when high. |
| 5 | SHDN | Shutdown control input - high-impedance CMOS; comparator disabled and output tri-stated when low. |
| 6 | IN– | Inverting input - accepts rail-to-rail differential signals; protected against ±20mA continuous short-circuit faults. |
| 7 | IN+ | Noninverting input - same fault tolerance and voltage range as IN–; differential input impedance >100MΩ. |
| 8 | VCC | Positive supply - supports 2.7V to 5.5V operation; decoupling capacitor (0.1μF ceramic) required within 2mm. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 1.5mV hysteresis | Eliminates need for external feedback resistors in threshold detectors, reducing BOM count and PCB area. |
| Latch enable (LE) pin | Freezes comparison result synchronously without external D-latch IC, enabling sampled-data acquisition in microcontroller-triggered systems. |
| Shutdown mode | Reduces quiescent current to <12μA and disables output drive, supporting dynamic power gating in energy-harvesting applications. |
| Rail-to-rail input & output | Enables direct interfacing with 0–3.3V DACs, Li-ion battery monitors, and 5V logic without level-shifting circuitry. |
| ±20mA input fault tolerance | Withstands continuous short-circuit to either rail - simplifies robustness design in industrial I/O modules. |
Applications
| Line Receivers | Battery-Powered Threshold Detection |
|---|---|
|
Use Scenario: Converting differential or single-ended analog signals from coaxial or twisted-pair lines into clean digital logic levels in industrial communication interfaces. IC Role / Device Role / Timing Role: High-speed comparator acting as line receiver front-end, rejecting common-mode noise while preserving edge integrity for clock/data recovery. Use Value: 40ns propagation delay and internal hysteresis ensure jitter-free signal regeneration even with 10mV overdrive, eliminating external Schmitt triggers. |
Use Scenario: Monitoring battery voltage or sensor output against programmable thresholds in portable medical devices or wireless sensors. IC Role / Device Role / Timing Role: Precision threshold discriminator with latch function, capturing voltage breach events for wake-up or alert generation. Use Value: 500μV offset and 1.5mV hysteresis deliver stable trip points across temperature; shutdown mode extends battery life by >99% during idle periods. |
| Zero-Crossing Detectors | 3V/5V Sampling Circuits |
|
Use Scenario: Detecting AC waveform polarity transitions in motor control, power metering, or audio signal processing. IC Role / Device Role / Timing Role: Comparator configured with IN+ grounded and IN– fed by AC source, generating precise zero-cross pulses. Use Value: Rail-to-rail input allows detection down to ±10mV near ground; 40ns delay enables accurate phase alignment in 10kHz+ systems. |
Use Scenario: Digitizing analog waveforms using external ADCs or microcontroller sample-and-hold inputs in data loggers or test equipment. IC Role / Device Role / Timing Role: Fast comparator providing strobe or window-enable signals synchronized to analog input transitions. Use Value: Latch function captures instantaneous comparator state for deterministic sampling; LE timing parameters (tS = 16ns, tH = 16ns) support >25MHz sampling control rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7215M5X/NOPB | 45ns propagation delay, 120μA supply current, no latch/shutdown, SOT23-5 package | Lacks LE/SHDN pins; suitable only for always-on, space-constrained designs without control logic | Choose when board space is critical and latch/shutdown are unnecessary; verify 45ns delay meets timing budget. |
| TLV3201DBVR | 40ns delay, 24μA supply current, rail-to-rail input, no latch/shutdown, SOT23-5 | Ultra-low power but no integrated control features; requires external logic for latching or power management | Prefer for battery lifetime optimization where external GPIO can manage timing/state; confirm 24μA ICC aligns with system sleep budget. |
Compared with LMV7215M5X/NOPB and TLV3201DBVR, the MAX9141ESA+T uniquely integrates latch and shutdown in an SO-8 package-enabling synchronous sampling and dynamic power control without added ICs or layout complexity.
Availability
MAX9141ESA+T is available at Aetrix Electronics and suitable for line receivers, battery-powered threshold detectors, zero-crossing detectors, and 3V/5V sampling circuits requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX9141ESA+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, and communications markets since 1965.
The MAX9141ESA+T belongs to the MAX914x family of single-supply comparators designed specifically for low-voltage, high-speed, rail-to-rail operation in portable and power-sensitive systems.
FAQ
What is the operating supply voltage range for the MAX9141ESA+T?
The MAX9141ESA+T operates from 2.7V to 5.5V. This range supports both 3V battery-powered systems and standard 5V logic domains. Operation outside this range may cause permanent damage, and absolute maximum ratings specify VCC to GND stress limit at +6V.
Does the MAX9141ESA+T require external pull-up resistors on its output?
No, the MAX9141ESA+T output drives to within 0.3V of either supply rail under 4mA load, making it fully compatible with CMOS and TTL logic without external pull-ups. Pull-ups are only needed if driving legacy 5V TTL with high fan-out requirements exceeding 4mA sink capability.
How does the latch function work on the MAX9141ESA+T?
The MAX9141ESA+T latch is controlled by the LE pin: when LE is high, the output follows the comparator input transparently; when LE is pulled low, the current output state is held until LE returns high. Minimum LE pulse width is 45ns, with setup/hold times of 16ns each relative to input transition.
What happens to the output during shutdown mode of the MAX9141ESA+T?
When SHDN is driven low, the MAX9141ESA+T enters shutdown mode: supply current drops below 12μA and the output enters high-impedance (tri-state) condition. The output remains indeterminate until SHDN is returned high *and* LE is high to re-enable transparent operation.
Is the MAX9141ESA+T pin-compatible with other devices in the MAX914x family?
No - the MAX9141ESA+T uses an 8-pin SO package with dedicated LE and SHDN pins, whereas MAX9140 is 5-pin and MAX9142/MAX9144 have different pinouts for dual/quad configurations. Pin mapping is unique to the MAX9141 variant; direct substitution requires PCB redesign.
MAX9141ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX9141ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9141ESA+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 MAX9141ESA+T reliable?
The price and inventory of MAX9141ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9141ESA+T is usually 5 days.
3.What payment methods are accepted for MAX9141ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9141ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9141ESA+T?
MAX9141ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9141ESA+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 MAX9141ESA+T?
For technical support, including MAX9141ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9141ESA+T requirements.
6.How does Aetrix verify that MAX9141ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX9141ESA+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 MAX9141ESA+T meets industry standards.
7.What is the process for return or replacement of MAX9141ESA+T?
All MAX9141ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9141ESA+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 MAX9141ESA+T part is unused and in its original packaging.
Return procedure for MAX9141ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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