My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4685EUB+
- Part No.:
- MAX4685EUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4685EUB+.pdf
- Description:
- IC SWITCH SPDTX2 800MOHM 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:325
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX4685EUB+ from Maxim Integrated is a dual SPDT analog switch IC designed for low-voltage signal routing in space-constrained portable systems, featuring 0.8Ω max on-resistance (NO/NC) at +2.7V, 50ns turn-on time, and rail-to-rail analog signal handling up to +5.5V supply. It operates across -40°C to +85°C and targets headset switching, audio routing, and battery-powered equipment.
For engineers reviewing the MAX4685EUB+ datasheet, MAX4685EUB+ pinout, MAX4685EUB+ application, or MAX4685EUB+ equivalent, key selection criteria include verified RON matching (≤0.06Ω), THD of 0.03%, low leakage (±1nA at +25°C), break-before-make timing (2ns), and UCSP-compatible µMAX-10 package compatibility.
Technical Context
The MAX4685EUB+ implements two independent SPDT switches with symmetrical 0.8Ω max RON for both NO and NC paths at +2.7V, enabling balanced signal routing in bidirectional audio/video paths. Its 1.8V logic-compatible digital inputs accept VIH ≥1.4V and VIL ≤0.5V, supporting direct interfacing with low-voltage microcontrollers.
Break-before-make switching (tBBM = 2ns max) prevents signal shorting during state transitions, while low charge injection (200pC) and flat RON (≤0.35Ω) ensure minimal distortion in precision analog paths. Off-isolation (-64dB) and crosstalk (-68dB) at 100kHz support high-fidelity multi-channel routing without interference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - supports Li-ion battery (3.0–4.2V) and 3.3V/1.8V logic domains without level shifters. |
| Max RON (NO/NC) | 0.8Ω at +2.7V - enables <10mV drop at 100mA load, critical for low-noise audio path integrity. |
| RON Match | ≤0.06Ω between channels - ensures matched gain/attenuation in differential or stereo signal pairs. |
| tON/tOFF | 50ns/40ns at +3V - allows sub-20MHz switching for fast multiplexing in data acquisition or comms circuits. |
| THD | 0.03% at 20Hz–20kHz - preserves audio fidelity in headset and MP3 player signal chains. |
| Off-Isolation | -64dB at 100kHz - blocks >99.8% of off-channel signal energy, preventing crosstalk in multi-source routing. |
| Leakage Current | ±1nA max at +25°C - minimizes DC error in high-impedance sensor or bias networks. |
Pinout & Package
The MAX4685EUB+ uses the 10-pin µMAX® package (U10-2), measuring 3mm × 3mm with exposed pad (EP), optimized for thermal performance and PCB area efficiency in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Digital control input | Active-high logic inputs controlling respective SPDT switches; 1.8V compatible, tolerate up to +5.5V. |
| COM1, COM2 | Analog common terminal | Bidirectional signal hub per switch - connects to source/sink depending on NO/NC state. |
| NO1, NO2 | Normally open analog terminal | Closed when corresponding IN is high; 0.8Ω RON path enables low-loss signal pass-through. |
| NC1, NC2 | Normally closed analog terminal | Closed when corresponding IN is low; identical 0.8Ω RON ensures symmetry vs. NO path. |
| V+ | Positive supply input | Accepts +1.8V to +5.5V; powers analog core and logic; must be applied before analog signals. |
| GND | Ground reference | Return path for supply and analog signals; EP must be connected to GND for thermal stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from GND to V+, eliminating clipping in full-supply-range audio or sensor interfaces. |
| Break-before-make switching | 2ns guaranteed delay prevents momentary shorting between NO and NC paths during transition. |
| Low THD (0.03%) | Preserves harmonic integrity in audio paths - suitable for headphone drivers and line-level routing. |
| 1.8V logic compatibility | Direct interface with ultra-low-power MCUs (e.g., ARM Cortex-M0+) without external level shifters. |
| Low leakage (±1nA) | Enables use in high-impedance bias networks and precision instrumentation front-ends without offset drift. |
Applications
| Speaker Headset Switching | MP3 Player Audio Routing |
|---|---|
Use Scenario: Dynamically routing mono/stereo audio 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 to prevent pop/click artifacts. Use Value: 0.8Ω RON and 0.03% THD maintain loudspeaker fidelity; 50ns switching enables seamless mute/unmute during jack insertion detection. |
Use Scenario: Selecting between DAC output, microphone input, and auxiliary line-in in compact MP3 players. IC Role / Device Role / Timing Role: Low-distortion bidirectional analog multiplexer managing multiple audio sources/sinks under MCU control. Use Value: -64dB off-isolation prevents cross-coupling between mic and speaker paths; rail-to-rail operation preserves full DAC dynamic range. |
| Power Routing in Wearables | Cellular Phone Antenna Switching |
Use Scenario: Enabling/disabling power to RF modules or sensors in battery-operated wearables based on activity state. IC Role / Device Role / Timing Role: Low-RON analog switch acting as a precision load switch with controlled turn-on/turn-off timing. Use Value: 0.8Ω RON limits voltage drop to <80mV at 100mA, minimizing power loss; ±1nA leakage extends standby battery life. |
Use Scenario: Isolating LTE/Wi-Fi transceivers from shared antenna ports in multi-band smartphones. IC Role / Device Role / Timing Role: High-isolation analog switch providing RF path selection with minimal insertion loss. Use Value: -68dB crosstalk prevents receiver desensitization; 0.35Ω RON flatness ensures consistent impedance match across signal swing. |
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 |
|---|---|---|---|
| MAX4684EUB+ | Asymmetrical RON: 0.5Ω (NC), 0.8Ω (NO) - optimized for unbalanced loads like speaker/headset combos. | Better suited for applications requiring different drive strengths on NC vs. NO paths (e.g., internal speaker + headset). | Select MAX4684EUB+ only if NC/NO asymmetry is required; MAX4685EUB+ provides matched RON for stereo or differential routing. |
| TMUX1574DRYR | Higher RON (1.5Ω typ), wider supply (1.08–5.5V), lower leakage (±0.5nA), but no UCSP/µMAX footprint. | Targeted at industrial ADC multiplexing where ultra-low leakage outweighs RON and size constraints. | Choose TMUX1574DRYR for sub-nA leakage needs or 1.08V operation; MAX4685EUB+ remains optimal for portable audio size/performance balance. |
Compared with MAX4684EUB+, the MAX4685EUB+ delivers symmetrical RON for matched channel performance in stereo/audio applications, while TMUX1574DRYR trades higher RON for broader voltage range and lower leakage - making MAX4685EUB+ the preferred choice for space-constrained, low-distortion portable audio routing.
Availability
The MAX4685EUB+ is available at Aetrix Electronics and suitable for speaker headset switching, MP3 player audio routing, and cellular phone antenna management requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.
Supply support for MAX4685EUB+ 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, and consumer applications.
The MAX4685EUB+ belongs to Maxim's low-voltage analog switch product line, engineered specifically for high-fidelity, low-power signal routing in portable electronics where size, distortion, and supply flexibility are critical.
FAQ
What is the maximum supply voltage rating for the MAX4685EUB+?
The MAX4685EUB+ has an absolute maximum supply voltage (V+) of +6V, but its specified operating range is +1.8V to +5.5V. Operating beyond +5.5V risks permanent damage and violates the device's guaranteed electrical characteristics. For reliable long-term use in battery-powered systems, keep V+ within the 1.8–5.5V range, especially considering typical Li-ion voltages (3.0–4.2V).
Does the MAX4685EUB+ support rail-to-rail analog signal operation?
Yes, the MAX4685EUB+ supports rail-to-rail analog signal handling - signals on NO_, NC_, and COM_ pins can swing from GND to V+ without clipping or increased distortion. This capability is confirmed in the datasheet's "Analog Signal Range" specification (0 to V+) and validated by THD testing across the full range, making it ideal for DAC outputs and audio line drivers.
What is the guaranteed break-before-make timing for the MAX4685EUB+?
The MAX4685EUB+ guarantees a break-before-make delay (tBBM) of 2ns maximum, measured under +2.7V supply with 50Ω load and 35pF capacitance. This ensures no overlap between NO and NC conduction states during switching, preventing momentary shorts that could cause audible pops in audio paths or signal corruption in data lines.
Can the MAX4685EUB+ be used with 1.8V logic controllers?
Yes, the MAX4685EUB+ features 1.8V logic-compatible inputs: VIH is guaranteed ≥1.4V and VIL ≤0.5V over the full +2.7V to +3.3V supply range. This allows direct connection to 1.8V GPIOs without level-shifting circuitry, reducing BOM count and layout complexity in ultra-low-power portable designs.
What is the thermal requirement for soldering the MAX4685EUB+ µMAX package?
The MAX4685EUB+ µMAX package requires adherence to JEDEC J-STD-020 reflow profiles, with preheating mandatory and peak temperatures not exceeding +260°C for ≤30 seconds. Hand or wave soldering is prohibited. The exposed pad (EP) must be soldered to a solid GND plane for thermal dissipation and mechanical reliability - failure to do so may cause overheating or solder joint fracture under thermal cycling.
MAX4685EUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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
MAX4685EUB+ FAQ
1.How can I place an order for MAX4685EUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4685EUB+ 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 MAX4685EUB+ reliable?
The price and inventory of MAX4685EUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4685EUB+ is usually 5 days.
3.What payment methods are accepted for MAX4685EUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4685EUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4685EUB+?
MAX4685EUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4685EUB+ 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 MAX4685EUB+?
For technical support, including MAX4685EUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4685EUB+ requirements.
6.How does Aetrix verify that MAX4685EUB+ is sourced from the original manufacturer or authorized distributors?
All MAX4685EUB+ 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 MAX4685EUB+ meets industry standards.
7.What is the process for return or replacement of MAX4685EUB+?
All MAX4685EUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4685EUB+, 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 MAX4685EUB+ part is unused and in its original packaging.
Return procedure for MAX4685EUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4685EUB+ Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
