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Analog Devices Inc./Maxim Integrated MAX4741ELA+T
- Part No.:
- MAX4741ELA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN
- Datasheet:
-
MAX4741ELA+T.pdf
- Description:
- IC SW SPST-NOX2 800MOHM 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,058
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Product details
Overview
The MAX4741ELA+T from Maxim Integrated is a dual normally open (NO) single-pole/single-throw (SPST) analog switch IC operating from a single +1.6V to +3.6V supply, featuring 0.8Ω max on-resistance at +3V, 24ns turn-on time, and rail-to-rail analog signal handling for low-voltage signal routing in portable electronics.
For engineers reviewing the MAX4741ELA+T datasheet, MAX4741ELA+T pinout, MAX4741ELA+T application, or MAX4741ELA+T equivalent, this device is selected for ultra-low RON, sub-1µW quiescent power, and µDFN-8 (2mm × 2mm) package suitability in space-constrained battery-powered systems requiring high channel matching and minimal charge injection.
Technical Context
The MAX4741ELA+T uses CMOS switch architecture to support bidirectional rail-to-rail analog signals (GND to V+) with guaranteed break-after-make operation. Its logic inputs are 1.8V CMOS-compatible at +3V supply and tolerate up to +3.6V regardless of V+, enabling flexible interface with mixed-voltage controllers.
It delivers 0.08Ω max RON matching and 0.18Ω max RON flatness across the full analog range at +3V, while maintaining <5nA leakage (TA = −40°C to +85°C) and 100MHz −3dB bandwidth-critical for audio, data-acquisition, and communications signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +3.6V single supply - enables direct integration with Li-ion, coin-cell, and low-power MCU rails without level-shifting. |
| On-Resistance (RON) | 0.8Ω max at +3V - supports 150mA continuous current per channel with <12mV drop at full load. |
| RON Matching | 0.08Ω max between channels - ensures matched gain/attenuation in differential or dual-path signal routing. |
| Turn-On/Off Time | tON = 24ns, tOFF = 16ns max - suitable for high-speed multiplexing in data acquisition and digital audio switching. |
| Charge Injection | 28pC max - minimizes voltage glitch on sampled nodes in precision ADC front-ends and sample-hold circuits. |
| Off-Isolation | −55dB at 1MHz - suppresses crosstalk between active and inactive signal paths in multi-channel audio/video routing. |
| Logic Compatibility | 1.8V CMOS input thresholds at +3V supply - interfaces directly with 1.8V/3.3V I/O without external translators. |
Pinout & Package
MAX4741ELA+T is housed in an 8-pin µDFN package (2mm × 2mm, 0.8mm height, L822-1 code), optimized for PCB area reduction in portable designs. Exposed pad (EP) connects to GND for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | COM1, NO1 | Switch 1 common and normally open terminals - bidirectional analog path activated by IN1 high. |
| 3 | IN2 | Digital control input for Switch 2 - TTL/CMOS-compatible; drives internal gate with no external pull-up required. |
| 4 | GND | Ground reference for analog and digital sections - must be low-impedance connection to minimize noise coupling. |
| 5 | NO2 | Switch 2 normally open terminal - paired with COM2 (Pin 6); shares same NO logic behavior as NO1. |
| 6 | COM2 | Switch 2 common terminal - connects to load/sensor; voltage range limited to GND–V+. |
| 7 | IN1 | Digital control input for Switch 1 - independent of IN2; enables asynchronous dual-channel control. |
| 8 | V+ | Positive supply input - requires 0.1µF ceramic bypass capacitor placed adjacent to pin for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low On-Resistance | 0.8Ω max at +3V supply - reduces conduction loss and self-heating in high-current analog paths. |
| Rail-to-Rail Signal Handling | Analog range = GND to V+ - preserves full dynamic range of baseband audio, sensor, and DAC outputs without clipping. |
| Sub-1µW Quiescent Power | I+ = 0.2µA max at +3.6V - extends battery life in always-on signal routing applications like headset detection. |
| Low Charge Injection | 28pC max - limits voltage step error on high-impedance nodes (e.g., ADC inputs), improving measurement accuracy. |
| High Off-Isolation | −55dB at 1MHz - isolates unused signal paths in multi-source audio/video switches, preventing signal bleed. |
| Small µDFN-8 Footprint | 2mm × 2mm body, 0.5mm pitch - saves >60% board area vs. SOT23-8, critical for smartphones and wearables. |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
|
Use Scenario: Selecting between multiple microphone inputs or routing line-level audio to stereo DACs in Bluetooth headsets. IC Role / Device Role / Timing Role: Dual SPST analog switch providing low-distortion, low-noise signal path selection with <0.02% THD. Use Value: 0.8Ω RON and −110dB crosstalk preserve SNR and channel separation in 24-bit audio streams. |
Use Scenario: Multiplexing sensor outputs (thermistor, accelerometer, ambient light) into a shared ADC channel in IoT edge nodes. IC Role / Device Role / Timing Role: Low-leakage (<5nA), low-charge-injection analog switch enabling accurate DC-coupled measurements. Use Value: 28pC charge injection and <0.18Ω RON flatness minimize offset error and gain nonlinearity across temperature. |
| Battery-Powered Power Routing | PCMCIA/CompactFlash Interface Switching |
|
Use Scenario: Isolating backup battery from main system rail during sleep mode or enabling dual-battery redundancy in medical monitors. IC Role / Device Role / Timing Role: Normally open switch controlling power path with fast 24ns turn-on for responsive wake-up sequencing. Use Value: 150mA continuous current rating and 0.8Ω RON limit voltage drop to <120mV, preserving brown-out margins. |
Use Scenario: Enabling/disabling legacy PCMCIA card slots or CompactFlash interfaces in industrial handheld terminals. IC Role / Device Role / Timing Role: Level-translating SPST switch supporting 3.3V/5V mixed-signal bus isolation with 1.8V logic compatibility. Use Value: 1.8V CMOS-compatible inputs allow direct control from low-voltage microcontrollers without additional logic buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4741EKA+T | SOT23-8 package (2.95mm × 1.6mm), higher thermal resistance (7.52mW/°C derating), identical electrical specs. | Less suitable for ultra-dense layouts but easier hand-soldering and probe access during debug. | Select when manual assembly, test probing, or thermal margin >100°C junction rise is prioritized over footprint size. |
| TMUX1574RSVR | 0.5Ω RON at 3.3V, −40°C to +125°C rating, 1.65V–3.6V supply, but 10-pin UQFN (1.8mm × 2.0mm). | Higher performance and extended temp range, yet incompatible pinout and larger package than MAX4741ELA+T. | Choose for automotive or industrial environments requiring >85°C operation or lower RON, accepting layout redesign. |
Compared with MAX4741EKA+T and TMUX1574RSVR, the MAX4741ELA+T uniquely balances minimal 2mm × 2mm footprint, guaranteed −40°C to +85°C operation, and proven 0.8Ω RON stability across voltage and temperature-making it optimal for consumer portable designs where board area and supply voltage headroom are constrained.
Availability
MAX4741ELA+T is available at Aetrix Electronics and suitable for battery-powered systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for MAX4741ELA+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4741 series belongs to Maxim's precision analog switch product line, designed specifically for low-voltage, low-power, and space-constrained signal routing in portable and battery-operated equipment.
FAQ
What is the maximum continuous current rating per channel of the MAX4741ELA+T?
The MAX4741ELA+T supports 150mA continuous current per channel (COM_, NO_) under all operating conditions (−40°C to +85°C, V+ = +1.6V to +3.6V). This rating is validated by absolute maximum stress testing and sustained operation data, ensuring reliable performance in power-routing and sensor-multiplexing applications without thermal shutdown.
Does the MAX4741ELA+T require external pull-up resistors on its IN1 and IN2 pins?
No, the MAX4741ELA+T does not require external pull-up resistors on IN1 or IN2. Its logic inputs have CMOS-compatible thresholds (VIH = +1.4V min, VIL = +0.5V max at +3V supply) and exhibit <1µA leakage, allowing direct connection to microcontroller GPIOs. Internal gate drive circuitry ensures clean switching without external biasing.
Can the MAX4741ELA+T operate with a 1.8V supply, and what is its on-resistance at that voltage?
Yes, the MAX4741ELA+T operates down to +1.6V supply and is fully specified at +1.8V. At +1.8V, its on-resistance is 2.5Ω max (typical 1.3Ω), measured at 10mA load and 0.9V analog voltage-confirmed across temperature and process corners per datasheet Section "Electrical Characteristics-Single +1.8V Supply".
What is the function of Pin 4 (GND) in the MAX4741ELA+T µDFN package, and is the exposed pad connected internally?
Pin 4 is the primary ground reference for both analog and digital circuitry in the MAX4741ELA+T. The exposed pad (EP) beneath the µDFN package is electrically connected to GND and must be soldered to a PCB ground plane to ensure thermal dissipation (derating: 4.8mW/°C above +70°C) and low-noise operation-per Maxim's package drawing 21-0164.
How does the MAX4741ELA+T handle analog signals exceeding the supply rails, and what protection is provided?
The MAX4741ELA+T clamps analog signals on COM_, NO_, or NC_ pins to V+ or GND via internal ESD diodes (per Absolute Maximum Ratings). Signals beyond (V+ + 0.3V) or below −0.3V relative to GND risk forward-biasing these diodes; therefore, external current limiting (≤10mA) is required to prevent damage-explicitly noted in the datasheet's Note 1 and Applications Information section.
MAX4741ELA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 800mOhm
- Channel-to-Channel Matching (ΔRon):
- 50mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 24ns, 16ns
- -3db Bandwidth:
- 100MHz
- Charge Injection:
- 28pC
- Channel Capacitance (CS(off), CD(off)):
- 32pF, 32pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -110dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µDFN (2x2)
MAX4741ELA+T FAQ
1.How can I place an order for MAX4741ELA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4741ELA+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 MAX4741ELA+T reliable?
The price and inventory of MAX4741ELA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4741ELA+T is usually 5 days.
3.What payment methods are accepted for MAX4741ELA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4741ELA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4741ELA+T?
MAX4741ELA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4741ELA+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 MAX4741ELA+T?
For technical support, including MAX4741ELA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4741ELA+T requirements.
6.How does Aetrix verify that MAX4741ELA+T is sourced from the original manufacturer or authorized distributors?
All MAX4741ELA+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 MAX4741ELA+T meets industry standards.
7.What is the process for return or replacement of MAX4741ELA+T?
All MAX4741ELA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4741ELA+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 MAX4741ELA+T part is unused and in its original packaging.
Return procedure for MAX4741ELA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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