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Analog Devices Inc./Maxim Integrated MAX4635EUB+T
- Part No.:
- MAX4635EUB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4635EUB+T.pdf
- Description:
- IC SWITCH SPDT X 2 4OHM 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:6,286
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Product details
Overview
MAX4635EUB+T from Maxim Integrated is a dual single-pole/double-throw (SPDT) CMOS analog switch with inverted logic control, 4Ω max on-resistance at +5V, 14ns max turn-on time, and rail-to-rail signal handling from +1.8V to +5.5V supply. It enables low-distortion audio routing and high-speed data-acquisition switching in space-constrained portable systems.
For engineers reviewing the MAX4635EUB+T datasheet, MAX4635EUB+T pinout, MAX4635EUB+T application, or MAX4635EUB+T equivalent, key selection criteria include guaranteed on-resistance matching (≤0.2Ω), break-before-make timing (≤1ns), THD of 0.1%, and compatibility with 1.8V logic interfaces while operating from 3.3V or 5V supplies.
Technical Context
The MAX4635EUB+T implements two independent SPDT switches using CMOS process technology, with inverted digital control logic (IN = LOW selects NC_, IN = HIGH selects NO_). Its architecture guarantees break-before-make operation to prevent signal shorting during state transitions.
It supports bidirectional analog signal flow across COM_/NO_/NC_ terminals, maintains ≤1Ω on-resistance flatness over full rail-to-rail input range at +5V, and achieves -67dB crosstalk and -65dB off-isolation at 1MHz - critical for multi-channel audio and precision measurement paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 4Ω at +5V supply - ensures minimal voltage drop and power loss in signal paths up to ±10mA continuous current. |
| On-Resistance Match | 0.2Ω max between channels - enables matched gain/attenuation in differential or dual-path circuits without calibration. |
| Turn-On / Turn-Off Time | 14ns / 6ns max - supports high-speed multiplexing in sampling systems and fast-switching communication interfaces. |
| Rail-to-Rail Signal Range | 0V to V+ - allows full utilization of supply headroom for unipolar or bipolar signal routing without clipping. |
| THD | 0.1% at 20Hz–20kHz - preserves audio fidelity in consumer and professional audio signal switching applications. |
| Off-Isolation | -65dB at 1MHz - suppresses coupling between inactive channels in multi-source routing architectures. |
| Supply Voltage Range | +1.8V to +5.5V - enables direct interface with modern low-voltage MCUs and battery-powered systems down to single-cell Li-ion. |
Pinout & Package
MAX4635EUB+T is housed in a 10-pin µMAX package (3mm × 3mm, 0.8mm height) with exposed pad not present (per MAX4636 note, applicable to MAX4635 family). Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise layout from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Inverted logic control inputs | LOW = connect COMx to NCx; HIGH = connect COMx to NOx - eliminates need for external inverters in logic-matched systems. |
| COM1, COM2 | Common analog terminals | Bidirectional signal ports - may serve as input or output depending on system topology and signal direction. |
| NO1, NO2 | Normally open switch terminals | Connected to COMx only when corresponding INx = HIGH - used for active-path selection in routing trees. |
| NC1, NC2 | Normally closed switch terminals | Connected to COMx only when corresponding INx = LOW - provides default path for fail-safe or standby configurations. |
| V+ | Positive supply rail | Accepts +1.8V to +5.5V - powers internal CMOS switch array and level-shifting circuitry for 5V-tolerant logic inputs. |
| GND | Analog and digital ground reference | Single ground connection required - simplifies PCB layout and avoids ground-loop complications in mixed-signal designs. |
Key Features
| Feature | Design Value |
|---|---|
| Inverted logic control | Eliminates external inverters in systems where active-low enable is native (e.g., MCU GPIO with pull-up defaults). |
| Guaranteed break-before-make | ≤1ns interval prevents momentary shorting between NO_ and NC_ during switching - essential for protecting downstream amplifiers or ADC inputs. |
| 1.8V logic-compatible inputs | Accepts 1.8V–5.5V logic levels regardless of V+ - enables direct interfacing with mixed-voltage SoCs without level shifters. |
| Low charge injection (2pC typ) | Minimizes voltage glitch on sampled nodes - critical for precision sample-and-hold and switched-capacitor filter applications. |
| Rail-to-rail analog range | Supports full-scale signal transmission from GND to V+, preserving dynamic range in low-voltage audio and sensor front-ends. |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
Use Scenario: Switching between microphone inputs, line-level sources, or headphone outputs in Bluetooth earbuds or voice-controlled remotes. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing low-THD, low-crosstalk signal path selection under MCU GPIO control. Use Value: 0.1% THD and -67dB crosstalk preserve stereo separation and voice clarity; 4Ω RON minimizes insertion loss in 16Ω–32Ω load paths. |
Use Scenario: Multiplexing multiple sensor outputs (thermistor, accelerometer, ambient light) into a single ADC channel in wearable health monitors. IC Role / Device Role / Timing Role: Low-leakage (<0.3nA off-state), rail-to-rail analog switch enabling accurate DC-coupled measurements across varying supply voltages. Use Value: <0.3nA off-leakage prevents measurement drift; 14ns switching supports >10MSPS multiplexed sampling rates with minimal aperture jitter. |
| Relay Replacement | Sample-and-Hold Circuits |
Use Scenario: Replacing electromechanical relays in industrial I/O modules for dry-contact simulation and PLC signal conditioning. IC Role / Device Role / Timing Role: Solid-state SPDT switch delivering infinite cycle life, shock/vibration immunity, and µs-level response vs. ms relay actuation. Use Value: 4Ω RON and 1Ω flatness ensure consistent signal transfer across temperature; +1.8V operation enables direct integration with low-power microcontrollers. |
Use Scenario: Holding analog voltage samples during ADC conversion cycles in precision instrumentation or oscilloscope front-ends. IC Role / Device Role / Timing Role: Low-charge-injection (2pC typ), low-leakage analog switch isolating hold capacitor from source impedance variations. Use Value: 2pC charge injection limits hold-step error to <2mV on 1nF capacitors; <0.3nA leakage sustains >100ms hold time with <0.1% droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4636EUB+T | Identical pinout and specs, but non-inverted logic (IN = HIGH → NO_, IN = LOW → NC_) | Suitable where system logic naturally drives active-high enables without inversion | Select MAX4636EUB+T if existing firmware or hardware uses active-high control; MAX4635EUB+T requires no logic inversion in active-low systems. |
| ADG726BRUZ | 6Ω max RON at +5V, 25ns tON, non-inverted logic, TSSOP-16 package | Larger footprint and slower switching; higher RON increases insertion loss in audio paths | Choose ADG726BRUZ only if µMAX footprint is unavailable and 6Ω RON is acceptable for target signal chain SNR. |
Compared with MAX4636EUB+T, MAX4635EUB+T offers identical performance with inverted control - simplifying firmware for systems with pull-up defaults. Against ADG726BRUZ, MAX4635EUB+T delivers 40% faster switching and 33% lower on-resistance in half the board area, making it superior for portable, high-fidelity, or space-constrained designs.
Availability
MAX4635EUB+T is available at Aetrix Electronics and suitable for battery-powered equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply and long-term production continuity.
Supply support for MAX4635EUB+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 high-performance analog and mixed-signal ICs for demanding industrial, communications, and consumer applications.
The MAX4635/MAX4636 product line targets low-voltage, high-speed analog signal routing in portable and power-sensitive systems - emphasizing rail-to-rail operation, low THD, and minimal board footprint.
FAQ
What is the logic polarity of the MAX4635EUB+T control inputs?
The MAX4635EUB+T features inverted logic: when IN1 or IN2 is LOW, the corresponding COMx terminal connects to NCx; when HIGH, it connects to NOx. This eliminates external inverters in systems with active-low control signals or pull-up-biased GPIOs. The MAX4635EUB+T datasheet confirms this behavior in the truth table and pin description sections.
Does the MAX4635EUB+T support rail-to-rail analog signals?
Yes, the MAX4635EUB+T supports analog signals from GND to V+ across all switch terminals (COM_, NO_, NC_), with guaranteed on-resistance flatness of ≤1Ω at +5V supply. This rail-to-rail capability enables full dynamic range usage in low-voltage audio, sensor, and data-acquisition circuits without signal clipping or distortion.
Can the MAX4635EUB+T operate from a 1.8V supply?
Yes, the MAX4635EUB+T is fully specified for operation from +1.8V to +5.5V. At +1.8V, typical on-resistance is 100Ω and switching times increase (56ns tON, 17ns tOFF), but logic inputs remain compatible with 1.8V–5.5V levels - allowing direct interface with ultra-low-power microcontrollers without level translation.
What is the maximum continuous current rating for the MAX4635EUB+T switches?
The MAX4635EUB+T supports ±30mA continuous current into any terminal (COM_, NO_, NC_) under absolute maximum ratings. For reliable long-term operation, design should limit steady-state current to levels that keep on-resistance heating within thermal limits - e.g., ≤10mA ensures <10mW dissipation per channel at 4Ω RON with +5V supply.
How does the MAX4635EUB+T handle off-isolation and crosstalk in multi-channel systems?
The MAX4635EUB+T delivers -65dB off-isolation and -67dB crosstalk at 1MHz, measured between any two switch channels. These values ensure minimal signal bleed-through in audio routing or sensor multiplexing applications. The guaranteed break-before-make timing (≤1ns) further prevents transient coupling during switching transitions.
MAX4635EUB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 4Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 14ns, 6ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -67dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX4635EUB+T FAQ
1.How can I place an order for MAX4635EUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4635EUB+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 MAX4635EUB+T reliable?
The price and inventory of MAX4635EUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4635EUB+T is usually 5 days.
3.What payment methods are accepted for MAX4635EUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4635EUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4635EUB+T?
MAX4635EUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4635EUB+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 MAX4635EUB+T?
For technical support, including MAX4635EUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4635EUB+T requirements.
6.How does Aetrix verify that MAX4635EUB+T is sourced from the original manufacturer or authorized distributors?
All MAX4635EUB+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 MAX4635EUB+T meets industry standards.
7.What is the process for return or replacement of MAX4635EUB+T?
All MAX4635EUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4635EUB+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 MAX4635EUB+T part is unused and in its original packaging.
Return procedure for MAX4635EUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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