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Analog Devices Inc./Maxim Integrated MAX4741EKA+T
- Part No.:
- MAX4741EKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-8
- Datasheet:
-
MAX4741EKA+T.pdf
- Description:
- IC SW SPST-NOX2 800MOHM SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,990
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Product details
Overview
The MAX4741EKA+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 MAX4741EKA+T datasheet, MAX4741EKA+T pinout, MAX4741EKA+T application, or MAX4741EKA+T equivalent, key selection criteria include on-resistance matching (0.08Ω max), 150mA continuous current capability, 1.8V CMOS logic compatibility, and SOT23-8 package suitability for space-constrained battery-powered systems.
Technical Context
The MAX4741EKA+T implements two independent CMOS SPST switches with normally open configuration, enabling bidirectional analog signal routing across the full supply range (GND to V+). Its architecture supports rail-to-rail operation without level-shifting and maintains low RON flatness (0.18Ω max) over input voltage and temperature.
Switching is controlled by 1.8V-tolerant digital inputs compatible with +3V supply logic levels; internal protection diodes clamp analog pins to within ±0.3V of V+ or GND. The device guarantees break-before-make timing only in the MAX4743 variant-MAX4741EKA+T has no break-before-make requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.8Ω max at +3V supply - enables low-loss switching of signals up to 150mA continuous current |
| RON Matching | 0.08Ω max between channels - ensures matched gain/attenuation in differential or dual-path circuits |
| RON Flatness | 0.18Ω max over full analog range - preserves linearity for audio and precision data-acquisition signals |
| Turn-On/Off Time | tON = 24ns, tOFF = 16ns max - supports high-speed multiplexing in >10MHz bandwidth applications |
| Supply Voltage Range | +1.6V to +3.6V single supply - compatible with Li-ion, Li-poly, and dual-cell alkaline battery systems |
| Logic Compatibility | 1.8V CMOS input threshold at +3V supply - interfaces directly with 1.8V/3.3V microcontrollers without level shifters |
| Leakage Current | ±5nA max COM/NO off-leakage - minimizes error in high-impedance sensor or reference signal paths |
Pinout & Package
MAX4741EKA+T is packaged in an 8-pin SOT23-8 surface-mount package (package code K8S-3), measuring 3.0mm × 1.7mm × 1.3mm, with exposed pad not present and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | NO1, NO2 | Normally open analog terminals - connect only when corresponding INx is high; used for signal enable/gating |
| 2, 6 | COM1, COM2 | Common analog I/O nodes - bidirectional path between NO/NC and system signal chain |
| 3, 7 | IN2, IN1 | Digital control inputs - CMOS-compatible; drive high to close NO switch, low to open |
| 4 | GND | Analog/digital ground reference - must be low-impedance connection to minimize noise coupling |
| 5 | V+ | Positive supply input - requires local 0.1µF bypass capacitor to GND for stable high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low on-resistance | 0.8Ω max at +3V - reduces I²R loss and thermal drift in power-sensitive signal paths |
| Rail-to-rail analog operation | Supports signals from GND to V+ - eliminates need for external biasing in single-supply systems |
| Low quiescent power | <1µW supply current - extends battery life in always-on or intermittent-scan portable devices |
| High off-isolation | –55dB at 1MHz - prevents crosstalk between active and inactive signal channels |
| Low charge injection | 28pC typical - minimizes voltage glitch during switching in sample-and-hold or ADC front-end circuits |
Applications
| Audio Signal Routing | Battery-Powered Data Acquisition |
|---|---|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in smartphones and wearables. IC Role / Device Role / Timing Role: Dual SPST analog switch providing channel selection with minimal THD (0.02%) and wide 100MHz bandwidth. Use Value: Enables compact, low-power audio routing without external amplifiers or level shifters due to rail-to-rail support and 1.8V logic compatibility. | Use Scenario: Multiplexing sensor outputs (e.g., thermistor, accelerometer) into a shared ADC in IoT edge nodes. IC Role / Device Role / Timing Role: Low-leakage (±5nA), low-RON switch preserving signal integrity across high-impedance sensor bridges. Use Value: Maintains measurement accuracy with <0.18Ω RON flatness and negligible offset error from charge injection (28pC). |
| PCMCIA/CardBus Interface | Cellular RF Front-End Control |
Use Scenario: Enabling/disabling legacy PCMCIA peripheral signals (e.g., I/O, memory, interrupt lines) in industrial handheld terminals. IC Role / Device Role / Timing Role: Dual NO switch isolating unused card functions while maintaining logic-level compatibility with 3.3V host controllers. Use Value: Eliminates need for discrete MOSFET arrays; 24ns switching supports hot-plug detection and fast card enumeration. | Use Scenario: Routing antenna diversity paths or band-select signals in LTE/5G handset transceivers. IC Role / Device Role / Timing Role: Low-capacitance (32pF COFF) analog switch minimizing insertion loss and harmonic distortion in RF receive chains. Use Value: Achieves –55dB off-isolation and 0.02% THD at audio frequencies, critical for maintaining EVM in adjacent-band receivers. |
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 |
|---|---|---|---|
| MAX4741EUA+T | Same electrical specs; packaged in 8-pin µMAX (U8-1) instead of SOT23-8 | Smaller footprint (3mm × 3mm vs. 3mm × 1.7mm) but lower power dissipation rating (362mW vs. 602mW) | Select for higher board density where thermal headroom permits |
| TMUX1574RSVR | 0.5Ω RON at 3.3V, but 1.65V–3.6V supply range; 30ns tON; 1.2V logic compatible | Lower RON and wider logic voltage support, but higher leakage (±25nA) and no 1.8V CMOS guarantee | Select when lowest on-resistance is prioritized over leakage-critical sensor front-ends |
Compared with MAX4741EKA+T, MAX4741EUA+T offers identical functionality in a different package with trade-offs in thermal performance and layout area, while TMUX1574RSVR provides lower RON at the cost of higher off-leakage and less stringent logic compatibility-making MAX4741EKA+T optimal for battery-constrained, low-leakage, 1.8V-controlled systems.
Availability
MAX4741EKA+T is available at Aetrix Electronics and suitable for audio signal routing, battery-powered data acquisition, and PCMCIA interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX4741EKA+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, mixed-signal, and power-management ICs for industrial, communications, computing, and consumer applications.
The MAX4741EKA+T belongs to Maxim's low-voltage analog switch product line, engineered specifically for rail-to-rail signal routing in space- and power-constrained portable electronics.
FAQ
What is the maximum continuous current rating for the MAX4741EKA+T?
The MAX4741EKA+T supports ±150mA continuous current per channel (COM, NO, or NC terminals) under specified thermal conditions. This rating assumes proper PCB copper pour and ambient temperature ≤+70°C. Derating applies above +70°C per the 7.52mW/°C thermal resistance of the SOT23-8 package. Exceeding this current may increase RON drift or cause thermal shutdown in sustained operation.
Does the MAX4741EKA+T support break-before-make switching?
No, the MAX4741EKA+T does not implement break-before-make switching. It is a dual normally open (NO) switch with independent control inputs (IN1, IN2); simultaneous activation of both switches does not guarantee isolation between NO1 and NO2. Break-before-make behavior is exclusive to the MAX4743 variant, as confirmed in the device family datasheet Pin Configurations and Features sections.
Can the MAX4741EKA+T operate from a 1.8V supply, and what are the key parameter changes?
Yes, the MAX4741EKA+T operates from +1.6V to +3.6V, including +1.8V. At +1.8V, RON increases to 2.5Ω max (vs. 0.8Ω at +3V), tON/tOFF degrade to 35ns/25ns max, and logic thresholds shift to VIH = +1.0V/VIL = +0.4V. All other parameters-including leakage, capacitance, and bandwidth-remain within datasheet limits, making it viable for ultra-low-power modes where speed and on-resistance are relaxed.
What is the recommended bypass capacitor for the MAX4741EKA+T V+ pin?
A 0.1µF ceramic capacitor placed as close as possible between the V+ pin (Pin 5) and GND (Pin 4) is recommended for the MAX4741EKA+T. This value is validated in the Applications Information section of the datasheet to suppress high-frequency switching noise and improve noise margin. For systems with heavy digital activity nearby, adding a parallel 1µF–10µF bulk capacitor on the same supply rail further stabilizes voltage during transient load steps.
Is the MAX4741EKA+T pin-compatible with other variants in the MAX4741/MAX4742/MAX4743 family?
Yes, the MAX4741EKA+T shares identical pinout and package (SOT23-8) with MAX4742EKA and MAX4743EKA, as shown in the Pin Configurations section. However, internal switch configuration differs: MAX4741EKA+T has two NO switches, MAX4742EKA has two NC, and MAX4743EKA has one NO + one NC. Swapping them requires verifying control logic polarity and signal path topology to avoid unintended shorting or open circuits.
MAX4741EKA+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:
- SOT-23-8
MAX4741EKA+T FAQ
1.How can I place an order for MAX4741EKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4741EKA+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 MAX4741EKA+T reliable?
The price and inventory of MAX4741EKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4741EKA+T is usually 5 days.
3.What payment methods are accepted for MAX4741EKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4741EKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4741EKA+T?
MAX4741EKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4741EKA+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 MAX4741EKA+T?
For technical support, including MAX4741EKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4741EKA+T requirements.
6.How does Aetrix verify that MAX4741EKA+T is sourced from the original manufacturer or authorized distributors?
All MAX4741EKA+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 MAX4741EKA+T meets industry standards.
7.What is the process for return or replacement of MAX4741EKA+T?
All MAX4741EKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4741EKA+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 MAX4741EKA+T part is unused and in its original packaging.
Return procedure for MAX4741EKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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