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Analog Devices Inc./Maxim Integrated MAX4561EUT
- Part No.:
- MAX4561EUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX4561EUT.pdf
- Description:
- IC SWITCH SPDT X 1 70OHM SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:4,700
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Product details
Overview
MAX4561EUT from Maxim Integrated is a single-pole/double-throw (SPDT) CMOS analog switch with ±15kV ESD protection on NO/NC terminals, 70Ω on-resistance at +5V, guaranteed break-before-make timing of 5ns, and rail-to-rail signal handling capability - deployed in audio routing and battery-powered data-acquisition systems.
For engineers reviewing the MAX4561EUT datasheet, MAX4561EUT pinout, MAX4561EUT application, or MAX4561EUT equivalent, key selection criteria include ESD robustness (IEC 1000-4-2 air-gap), on-resistance matching (≤2Ω), off-leakage (<5nA at +85°C), and SOT23-6 package compatibility with legacy analog switch layouts.
Technical Context
The MAX4561EUT implements a CMOS transmission-gate architecture with integrated bidirectional SCRs for ±15kV ESD protection on NO and NC terminals, enabling latchup-free operation without external clamps. Its logic input thresholds (+0.8V to +2.4V) ensure TTL/CMOS compatibility with +5V supplies.
Break-before-make switching is guaranteed at 5ns (typ), preventing momentary shorting during SPDT transitions. The device supports rail-to-rail analog signals across its full ±1.8V to +12V supply range, with on-resistance flatness limited to 4Ω max over the signal range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +1.8V to +12V - enables direct interface with Li-ion, 3.3V, and 5V systems without level-shifting |
| On-Resistance (RON) | 70Ω max at +5V - ensures minimal signal attenuation and voltage drop in precision analog paths |
| On-Resistance Match | ≤2Ω between NO/NC channels - critical for differential signal integrity and matched gain paths |
| Off-Leakage Current | 5nA max at +85°C - preserves accuracy in high-impedance sample-and-hold and sensor front-ends |
| ESD Protection | ±15kV HBM & IEC 1000-4-2 air-gap on NO/NC - eliminates need for external TVS diodes in handheld interfaces |
| Break-Before-Make Delay | 5ns guaranteed - prevents signal shorting during channel switching in multiplexed ADC inputs |
| Logic Thresholds | +0.8V low / +2.4V high - ensures reliable control from standard 5V microcontroller GPIOs |
Pinout & Package
The MAX4561EUT is housed in a RoHS-compliant 6-pin SOT23 package (U6SN+1 outline), with 1.0mm pitch, 2.9mm × 1.6mm footprint, and thermal pad omitted - suitable for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Logic control input | Active-high digital enable; accepts TTL/CMOS levels with no external pull-up required |
| 2 - NO | Normally open analog terminal | Connects to COM only when IN = high; isolated from COM when IN = low |
| 3 - GND | Analog and digital ground reference | Single ground connection serves both logic and analog domains; must be low-impedance |
| 4 - NC | Normally closed analog terminal | Connects to COM when IN = low; isolated when IN = high - forms SPDT path with NO |
| 5 - COM | Common analog terminal | Shared signal path for bidirectional rail-to-rail analog signals up to V+ |
| 6 - V+ | Positive supply rail | Power source for analog switch core and logic; requires local 0.1µF bypass to GND |
Key Features
| Feature | Design Value |
|---|---|
| ±15kV ESD protection on NO/NC | Eliminates external protection components in USB, audio jack, and industrial I/O interfaces |
| Rail-to-rail signal handling | Supports full-scale analog signals from GND to V+ without clipping or distortion |
| Guaranteed break-before-make | Ensures no overlap between NO and NC conduction - essential for safe multiplexer sequencing |
| Low on-resistance flatness (4Ω max) | Maintains consistent gain and linearity across entire input voltage range |
| Industry-standard SOT23-6 pinout | Enables drop-in replacement for MAX4544 and simplifies layout reuse in existing designs |
Applications
| Audio Signal Routing | Battery-Powered Data Acquisition |
|---|---|
Use Scenario: Switching microphone or line-level audio between multiple codecs or amplifiers in portable media players. IC Role / Device Role / Timing Role: SPDT analog switch selecting between dual-input sources while maintaining THD < 0.01% at 20Hz–20kHz. Use Value: ±15kV ESD protection prevents pop/noise during hot-plug headphone insertion; rail-to-rail operation preserves full dynamic range. | Use Scenario: Multiplexing sensor outputs (thermocouple, RTD, strain gauge) into a single ADC channel in handheld test equipment. IC Role / Device Role / Timing Role: Low-leakage SPDT switch isolating high-impedance sensors during sampling to avoid measurement drift. Use Value: 5nA max off-leakage at +85°C ensures <0.1% error in 10MΩ sensor bridges; 70Ω RON minimizes gain error in instrumentation amps. |
| High-ESD Industrial I/O | Communications Circuit Protection |
Use Scenario: Protecting RS-232/RS-485 transceiver analog control lines exposed to field wiring in factory automation panels. IC Role / Device Role / Timing Role: ESD-hardened analog switch gating bias or enable signals before they reach sensitive transceiver ICs. Use Value: On-chip ±15kV SCR protection absorbs ESD strikes without latchup - eliminating failure modes seen with unprotected GPIOs. | Use Scenario: Isolating RF front-end bias networks during transmit/receive mode switching in IoT wireless modules. IC Role / Device Role / Timing Role: Fast-switching SPDT managing DC bias paths for PA/LNA while preserving signal integrity up to 10MHz. Use Value: 150ns max turn-on time and 4Ω RON flatness maintain stable bias under modulation; 20pF COFF limits RF coupling between paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4544EUT+T | Same SOT23-6 pinout, identical RON (70Ω), but rated only to +70°C and lacks guaranteed break-before-make | Suitable for commercial-grade consumer devices where extended temperature and strict switching sequencing are not required | Select MAX4544EUT+T only if operating ambient stays ≤+70°C and BBM timing is non-critical |
| TMUX1574DSGR | Lower RON (0.5Ω typ), wider supply (1.08V–5.5V), but only ±2kV ESD rating and no BBM guarantee | Better for ultra-low-loss signal paths in battery-powered wearables, but requires external ESD protection in harsh environments | Choose TMUX1574DSGR when on-resistance dominates design priority and ESD exposure is controlled |
Compared with MAX4544EUT+T, the MAX4561EUT adds guaranteed -40°C to +85°C operation and 5ns break-before-make - critical for industrial data loggers. Versus TMUX1574DSGR, it trades lower RON for robust ±15kV ESD immunity - essential for field-deployable instrumentation.
Availability
MAX4561EUT is available at Aetrix Electronics and suitable for high-ESD environments, battery-powered systems, and audio signal routing requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for MAX4561EUT 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, medical, and communications applications.
The MAX4561EUT belongs to Maxim's ESD-hardened analog switch family, engineered specifically for reliable signal routing in uncontrolled ESD environments such as handheld test gear and portable audio interfaces.
FAQ
What is the maximum supply voltage rating for the MAX4561EUT?
The MAX4561EUT has an absolute maximum supply voltage (V+) of +13V referenced to GND. It operates continuously across +1.8V to +12V. Exceeding +13V risks permanent damage. For +12V operation, a 0.1µF ceramic capacitor must be placed directly between V+ and GND near the package to suppress ESD-induced supply spikes - this requirement is explicitly specified in the Applications Information section of the MAX4561EUT datasheet.
Does the MAX4561EUT support rail-to-rail analog signals?
Yes, the MAX4561EUT supports rail-to-rail analog signals - meaning it can pass voltages from GND to V+ without clipping or distortion. This capability is confirmed in the General Description and Features sections of the official datasheet, and is enabled by its CMOS transmission-gate architecture and proper biasing of internal switches. Signal integrity is maintained across the full range, with on-resistance flatness specified at 4Ω max.
What is the guaranteed break-before-make timing for the MAX4561EUT?
The MAX4561EUT guarantees a break-before-make delay of 5ns (minimum) under standard test conditions (VNO/VNC = 3V, RL = 300Ω, CL = 35pF). This parameter is explicitly listed in the Electrical Characteristics table under "Break-Before-Make Delay (MAX4561 only)" and is a distinguishing feature versus other members of the MAX456x family like MAX4568/MAX4569, which lack BBM functionality entirely.
How does the ESD protection on the MAX4561EUT work, and what standards does it meet?
The MAX4561EUT uses on-chip bidirectional SCRs between NO/NC terminals and GND to clamp ±15kV ESD events per IEC 1000-4-2 air-gap discharge and Human Body Model. This architecture safely shunts surge current to ground within nanoseconds, avoiding latchup. It meets ±15kV HBM, ±15kV IEC 1000-4-2 air-gap, and ±8kV contact discharge - all confirmed in the Absolute Maximum Ratings and ESD Protection sections of the datasheet.
Is the MAX4561EUT pin-compatible with any other Maxim analog switches?
Yes, the MAX4561EUT is explicitly stated as pin-compatible with the MAX4544 in the Features section of its datasheet. Both use the same 6-pin SOT23 package and identical pin assignments (IN, NO, GND, NC, COM, V+). This allows direct substitution in existing layouts where the MAX4544 was used - though designers must verify that the MAX4561EUT's extended temperature range (-40°C to +85°C) and guaranteed break-before-make meet system requirements.
MAX4561EUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Strip
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 70Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 150ns, 80ns
- -3db Bandwidth:
- -
- Charge Injection:
- 17pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX4561EUT FAQ
1.How can I place an order for MAX4561EUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4561EUT 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 MAX4561EUT reliable?
The price and inventory of MAX4561EUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4561EUT is usually 5 days.
3.What payment methods are accepted for MAX4561EUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4561EUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4561EUT?
MAX4561EUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4561EUT 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 MAX4561EUT?
For technical support, including MAX4561EUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4561EUT requirements.
6.How does Aetrix verify that MAX4561EUT is sourced from the original manufacturer or authorized distributors?
All MAX4561EUT 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 MAX4561EUT meets industry standards.
7.What is the process for return or replacement of MAX4561EUT?
All MAX4561EUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX4561EUT, 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 MAX4561EUT part is unused and in its original packaging.
Return procedure for MAX4561EUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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