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Analog Devices Inc./Maxim Integrated MAX4684EUB+T
- Part No.:
- MAX4684EUB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4684EUB+T.pdf
- Description:
- IC SWITCH SPDTX2 800MOHM 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,018
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Product details
Overview
MAX4684EUB+T from Maxim Integrated is a dual SPDT analog switch IC designed for low-voltage signal routing in portable audio and power management systems. It features 0.5Ω max NC on-resistance and 0.8Ω max NO on-resistance at +2.7V supply, 50ns turn-on time, rail-to-rail analog signal handling, and 1.8V logic-compatible digital inputs - enabling direct interface with modern low-power microcontrollers in headset switching and battery-operated equipment.
For engineers reviewing the MAX4684EUB+T datasheet, MAX4684EUB+T pinout, MAX4684EUB+T application, or MAX4684EUB+T equivalent, key selection criteria include NC/NO RON asymmetry, UCSP vs. µMAX package trade-offs, break-before-make timing (2ns), leakage performance (<1nA @ +25°C), and compatibility with 1.8V–5.5V single-supply operation across industrial temperature range (-40°C to +85°C).
Technical Context
The MAX4684EUB+T implements two independent SPDT switches with break-before-make architecture, ensuring no signal shorting during state transitions. Each switch supports bidirectional analog signal flow from GND to V+, with guaranteed RON flatness ≤0.15Ω over full signal range and RON matching ≤0.06Ω between channels.
Digital control uses CMOS-compatible IN_ inputs tolerant up to +5.5V regardless of V+ level, enabling mixed-voltage system interfacing. Internal ESD protection and rail-to-rail analog capability allow direct connection to audio codecs, DAC outputs, and battery rails without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| NC RON (max) | 0.5Ω at +2.7V - enables low-loss connection for high-current paths like speaker drivers |
| NO RON (max) | 0.8Ω at +2.7V - optimized for lower-current signal routing such as microphone or auxiliary inputs |
| tON/tOFF | 50ns/40ns at +3V - supports fast multiplexing in real-time audio and data acquisition |
| Supply Range | +1.8V to +5.5V - operates directly from Li-ion battery (3.0–4.2V) or regulated 3.3V/1.8V rails |
| Leakage Current | ±1nA max at +25°C - preserves signal integrity in high-impedance sensor or audio bias networks |
| Off-Isolation | -64dB at 100kHz - suppresses crosstalk between active and inactive audio channels |
| THD | 0.03% - maintains fidelity in line-level and headphone driver applications |
Pinout & Package
Packaged in a 10-pin µMAX® (U10-2) surface-mount package measuring 3mm × 3mm, the MAX4684EUB+T uses standard lead-frame construction with exposed pad (EP) connected to GND for thermal and electrical stability. Pin numbering follows JEDEC MS-012AC standard.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply input - must be applied before analog signals to prevent latch-up |
| 2, 10 | NO1, NO2 | Normally open analog terminals - connect to secondary signal sources (e.g., external mic, second speaker) |
| 3, 9 | COM1, COM2 | Common analog terminals - tie to codec output, amplifier input, or shared battery rail |
| 4, 8 | IN1, IN2 | Digital control inputs - accept 1.8V logic thresholds (VIH = 1.4V, VIL = 0.5V) with ±5.5V tolerance |
| 5, 7 | NC1, NC2 | Normally closed analog terminals - default path for primary signals (e.g., internal speaker, main audio out) |
| 6 | GND | Analog/digital ground reference - must be low-impedance and tied to EP for noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetrical RON (NC/NO) | 0.5Ω/0.8Ω max enables optimized current handling per path - e.g., NC for speaker load, NO for sensing |
| Rail-to-rail signal range | Supports full V+ to GND analog swing without clipping - critical for unbuffered audio and battery voltage monitoring |
| Break-before-make timing | 2ns guaranteed delay prevents momentary short-circuit during switching - essential for relay replacement safety |
| Low charge injection | 200pC max minimizes glitch-induced pop/click in audio paths during switching transitions |
| 1.8V logic compatibility | Direct interface with ultra-low-power MCUs (e.g., ARM Cortex-M0+) without level shifters or pull-ups |
Applications
| Speaker Headset Switching | MP3 Player Audio Routing |
|---|---|
|
Use Scenario: Dynamically selecting between internal speaker and 3.5mm headset jack in portable media players. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing isolated signal paths with break-before-make action to eliminate audible click/pop. Use Value: Asymmetrical RON (0.5Ω NC for speaker, 0.8Ω NO for headset) matches differing impedance and current requirements while maintaining THD < 0.03%. |
Use Scenario: Routing DAC output to either line-out amplifier or headphone driver based on jack detection status. IC Role / Device Role / Timing Role: Low-leakage (±1nA), rail-to-rail analog switch enabling clean signal transfer without DC offset or distortion. Use Value: 50ns tON allows sub-millisecond reconfiguration during playback mode changes; -64dB off-isolation prevents channel bleed. |
| Battery Power Path Selection | Cellular Phone Antenna Switching |
|
Use Scenario: Selecting between main Li-ion battery and backup coin cell in always-on IoT sensors during brownout conditions. IC Role / Device Role / Timing Role: High-current analog switch (±300mA continuous) with low RON flatness (≤0.15Ω) ensuring stable voltage delivery across load range. Use Value: 0.5Ω NC path minimizes voltage drop under 200mA load; 1.8V logic compatibility enables direct MCU GPIO control without level translation. |
Use Scenario: Switching RF front-end between cellular transceiver and GPS receiver in multi-band smartphones. IC Role / Device Role / Timing Role: Low-capacitance analog switch (CNO(ON) = 150pF) minimizing signal loss and phase distortion in 800MHz–2.5GHz bands. Use Value: -68dB crosstalk at 100kHz correlates with low intermodulation in adjacent RF paths; fast tOFF (40ns) supports rapid band-hopping protocols. |
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 |
|---|---|---|---|
| MAX4685EUB+T | Symmetric 0.8Ω max RON for both NC and NO paths; identical timing, leakage, and package | Better suited for balanced dual-path applications (e.g., stereo channel swapping) where NC/NO asymmetry is unnecessary | Select MAX4685EUB+T when equal on-resistance simplifies layout and calibration - no PCB changes required |
| TMUX1574RTER | 0.5Ω max RON, 3.3V-only supply, 1.8V logic compatible, 12-pin WQFN (2mm × 2mm) | Smaller footprint but lacks UCSP/µMAX thermal performance; higher leakage (±5nA) | Choose TMUX1574RTER only if board space is constrained and 3.3V supply is fixed - verify thermal derating at 85°C |
Compared with MAX4684EUB+T, MAX4685EUB+T offers symmetric RON for simplified design in matched-path systems, while TMUX1574RTER trades supply flexibility and leakage performance for compact size - making MAX4684EUB+T optimal for asymmetric, battery-powered, wide-supply applications requiring minimal distortion and robust thermal behavior.
Availability
MAX4684EUB+T is available at Aetrix Electronics and suitable for speaker headset switching, MP3 player audio routing, and battery power path selection requiring stable component supply across industrial temperature range (-40°C to +85°C) and long-term production continuity.
Supply support for MAX4684EUB+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 demanding industrial, automotive, and communications applications.
The MAX4684EUB+T belongs to Maxim's low-voltage analog switch product line, engineered specifically for portable audio, battery management, and signal routing where low RON, fast switching, and 1.8V logic compatibility are critical.
FAQ
What is the maximum continuous current rating for MAX4684EUB+T?
The MAX4684EUB+T supports ±300mA continuous current through its NO_, NC_, and COM_ terminals. This rating applies across the full operating temperature range (-40°C to +85°C) and ensures reliable operation in speaker driver and power routing applications without thermal shutdown. Peak current capability reaches ±500mA at 10% duty cycle, supporting pulsed loads like flash LED drivers.
Does MAX4684EUB+T require external level-shifting for 1.8V GPIO control?
No, the MAX4684EUB+T does not require external level-shifting. Its digital inputs (IN1/IN2) are 1.8V logic-compatible with VIH = +1.4V and VIL = +0.5V, and tolerate voltages up to +5.5V regardless of V+ supply level. This allows direct connection to 1.8V, 3.3V, or 5V microcontroller GPIOs without additional components - a key advantage in mixed-voltage portable designs.
How does the asymmetrical RON of MAX4684EUB+T benefit audio applications?
The MAX4684EUB+T's 0.5Ω max NC RON and 0.8Ω max NO RON at +2.7V enable optimized path selection: the lower-resistance NC path handles higher-current loads like internal speakers, while the NO path routes lower-current signals such as headset microphones or auxiliary inputs. This asymmetry reduces insertion loss mismatch and improves THD consistency across switched configurations in MAX4684EUB+T-based audio subsystems.
Can MAX4684EUB+T operate from a single 1.8V supply?
Yes, the MAX4684EUB+T is fully specified for operation from +1.8V to +5.5V single supply. At +1.8V, it maintains functional switching with guaranteed tON/tOFF and RON performance, enabling use in ultra-low-power devices powered by single-cell alkaline or lithium batteries. Logic thresholds scale accordingly (VIH = +0.9V, VIL = +0.3V), preserving noise margin.
What is the thermal limitation of the µMAX package used in MAX4684EUB+T?
The MAX4684EUB+T in 10-pin µMAX package has a continuous power dissipation limit of 444mW at +70°C, derating at 5.6mW/°C above that temperature. Its exposed pad (EP) must be soldered to a solid GND plane to achieve this rating. Without proper thermal land pattern, junction temperature rise may exceed safe limits under sustained 300mA load - always follow Maxim's U10-2 footprint guidelines in document 21-0061.
MAX4684EUB+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):
- 800mOhm
- Channel-to-Channel Matching (ΔRon):
- 60mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 50ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 200pC
- Channel Capacitance (CS(off), CD(off)):
- 84pF, 37pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -68dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX4684EUB+T FAQ
1.How can I place an order for MAX4684EUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4684EUB+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 MAX4684EUB+T reliable?
The price and inventory of MAX4684EUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4684EUB+T is usually 5 days.
3.What payment methods are accepted for MAX4684EUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4684EUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4684EUB+T?
MAX4684EUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4684EUB+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 MAX4684EUB+T?
For technical support, including MAX4684EUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4684EUB+T requirements.
6.How does Aetrix verify that MAX4684EUB+T is sourced from the original manufacturer or authorized distributors?
All MAX4684EUB+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 MAX4684EUB+T meets industry standards.
7.What is the process for return or replacement of MAX4684EUB+T?
All MAX4684EUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4684EUB+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 MAX4684EUB+T part is unused and in its original packaging.
Return procedure for MAX4684EUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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