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Analog Devices Inc./Maxim Integrated MAX4656EUA+T
- Part No.:
- MAX4656EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4656EUA+T.pdf
- Description:
- IC SWITCH SPST-NOX1 10OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,600
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Product details
Overview
MAX4656EUA+T from Maxim Integrated is a normally open (NO), single-pole/single-throw (SPST), high-current CMOS analog switch with 10Ω max on-resistance at ±15V, 300mA continuous current handling, and rail-to-rail signal capability across ±4.5V to ±20V dual supplies or +9V to +40V single supply - used in audio routing, relay replacement, and redundant backup systems.
For engineers reviewing the MAX4656EUA+T datasheet, MAX4656EUA+T pinout, MAX4656EUA+T application, or MAX4656EUA+T equivalent, this page delivers verified electrical specs, truth-table-validated switching behavior, package-specific thermal derating, leakage performance at temperature extremes, and real-world design context for high-current analog path selection.
Technical Context
The MAX4656EUA+T implements a parallel N-channel/P-channel MOSFET switch architecture with proprietary body-drive sensing that eliminates the ~600mV voltage-drop limitation of conventional analog switches, enabling full rail-to-rail conduction without parasitic diode turn-on or excessive I+ increase. Its TTL/CMOS-compatible IN pin controls a latched NO configuration: logic low = switch open (off), logic high = switch closed (on).
It operates over -40°C to +85°C with guaranteed 1nA max off-leakage at +25°C, 210MHz -3dB bandwidth, and 1Ω max RON flatness over ±10V signal range - supporting precision signal integrity in xDSL modems and PBX line cards where channel matching and THD < 0.007% are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPST, Normally Open (NO) - requires logic-high input to conduct; zero default path risk in power-loss scenarios. |
| On-Resistance (RON) | 10Ω max at ±15V - enables ≤300mV drop at 30mA load, preserving signal headroom in 12-bit DAC output stages. |
| Continuous Current | 300mA - supports direct switching of solenoid drivers, LED arrays, or audio amplifier mute paths without external buffering. |
| Analog Signal Range | Rail-to-rail (V− to V+) - handles ±15V op-amp outputs or +24V industrial sensor signals without clipping or level-shifting. |
| Off-Leakage Current | 1nA max at +25°C - ensures <1µV error in high-impedance pH probe or thermocouple front-end multiplexing. |
| Turn-On/Off Time | 110ns / 75ns typical - meets timing budgets for 10MHz sample-and-hold circuits and fast test equipment channel switching. |
| Supply Range | ±4.5V to ±20V dual or +9V to +40V single - accommodates legacy ±15V op-amp rails and modern 24V industrial control buses. |
Pinout & Package
MAX4656EUA+T uses an 8-pin µMAX package (3.0mm × 3.0mm, 0.65mm pitch) with exposed paddle (EP) for thermal enhancement. Pin 1 = COM (common terminal), Pin 3 = GND, Pin 4 = V+, Pin 6 = IN (digital control), Pin 7 = V−, Pin 8 = NO (normally open terminal); Pins 2 and 5 are no-connect.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog common node - connects to load or signal source; bidirectional conduction path when switch is active. |
| 2, 5 | N.C. | No internal connection - must be left floating or tied to GND per layout best practices; no routing required. |
| 3 | GND | Digital ground reference - serves as return path for control logic and must be low-impedance to minimize noise coupling into analog paths. |
| 4 | V+ | Positive supply input - powers P-channel MOSFET and sensing circuitry; EP pad must be soldered to V+ plane for thermal compliance. |
| 6 | IN | TTL/CMOS digital input - active-high control; VIH ≥ 2.4V, VIL ≤ 0.8V; compatible with 3.3V and 5V microcontrollers without level shifters. |
| 7 | V− | Negative supply input - powers N-channel MOSFET; supports asymmetrical supplies (e.g., V+ = +12V, V− = −5V) for custom dynamic range tuning. |
| 8 | NO | Normally open analog terminal - only conducts to COM when IN = high; isolates signal path during power-down or fault conditions. |
Key Features
| Feature | Design Value |
|---|---|
| No VL supply required | Eliminates need for auxiliary logic-level supply - simplifies BOM and PCB layout in mixed-voltage systems. |
| 1Ω max RON flatness | Maintains consistent gain and THD across full ±10V signal swing - critical for audio line-level switching and instrumentation amplifiers. |
| 400mA peak current | Supports transient loads like relay coils or capacitor charging without latch-up or thermal shutdown. |
| Rail-to-rail signal handling | Preserves full dynamic range of ±12V DACs or +24V sensor outputs without external clamping or biasing networks. |
| Pin compatibility with DG417/DG418 | Enables drop-in upgrade from legacy Vishay switches - retains existing footprint and routing while improving current capacity and leakage. |
Applications
| Audio Signal Routing | Relay Replacement |
|---|---|
Use Scenario: Switching between multiple microphone preamp outputs to a shared ADC channel in a PC multimedia board. IC Role / Device Role / Timing Role: SPST analog switch providing low-distortion, low-crosstalk signal path selection under microcontroller GPIO control. Use Value: 0.007% THD and 210MHz bandwidth preserve audio fidelity; 300mA rating handles phantom power surges during hot-plug events. | Use Scenario: Replacing electromechanical relays in automated test equipment (ATE) fixture sequencing. IC Role / Device Role / Timing Role: High-speed, high-cycle-count solid-state switch controlling DC power delivery to DUT channels. Use Value: 1M× faster switching than reed relays and unlimited lifetime cycles eliminate maintenance downtime in production test systems. |
| xDSL Modem Line Cards | Redundant/Backup Systems |
Use Scenario: Selecting primary vs. backup DSL line drivers in carrier-grade access concentrators. IC Role / Device Role / Timing Role: Fault-tolerant analog path selector ensuring uninterrupted broadband service during line failure. Use Value: 1nA off-leakage prevents signal bleed between active/inactive lines; ±20V rating withstands lightning-induced transients on outside plant wiring. | Use Scenario: Isolating primary and backup power supplies in telecom shelf controllers. IC Role / Device Role / Timing Role: Normally open switch enabling fail-safe power path activation only upon controller command. Use Value: NO configuration guarantees open-circuit default state - prevents backfeed or brownout during switchover transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4656ETA+T | Same electrical specs but in 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) with higher 1951mW power dissipation at +70°C. | Better thermal performance in high-density layouts; requires different land pattern and stencil design. | Select for >1W continuous power dissipation or forced-air cooling environments. |
| DG418DN-E3 | 12Ω max RON, 170mA continuous current, no exposed paddle, SO-8 package; lacks rail-to-rail operation below ±5V. | Limited to lower-current, narrower supply-range applications; not suitable for ±15V or +24V systems. | Choose only if legacy SO-8 footprint is mandatory and 300mA/±20V capability is unnecessary. |
Compared with MAX4656ETA+T, the MAX4656EUA+T trades thermal headroom for µMAX footprint compatibility; versus DG418DN-E3, it delivers 76% higher continuous current, 17% lower RON, and guaranteed rail-to-rail operation - making it the preferred choice for next-generation high-fidelity and industrial-grade designs.
Availability
MAX4656EUA+T is available at Aetrix Electronics and suitable for audio signal routing, relay replacement, and redundant/backup systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and telecom applications.
Supply support for MAX4656EUA+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, and computing markets - with emphasis on high-reliability, low-power, and high-performance solutions.
The MAX4655–MAX4658 family was engineered specifically for high-current analog switching in space-constrained, thermally demanding applications - replacing electromechanical relays while delivering superior speed, reliability, and signal integrity.
FAQ
What is the maximum continuous current rating for MAX4656EUA+T?
The MAX4656EUA+T supports 300mA continuous current through its COM and NO terminals under specified thermal conditions. This rating applies across the full operating temperature range (-40°C to +85°C) and is validated with proper PCB copper pour and thermal vias connected to the exposed paddle. Exceeding 300mA risks exceeding the 825mW derated power dissipation limit at +70°C.
Does MAX4656EUA+T require a separate logic-level supply (VL)?
No, the MAX4656EUA+T does not require a VL supply. Its digital input (IN pin) is fully TTL/CMOS compatible with VIH ≥ 2.4V and VIL ≤ 0.8V, allowing direct interfacing with 3.3V or 5V microcontrollers without level translation. This eliminates an external supply rail and simplifies system power architecture compared to older analog switch families.
Can MAX4656EUA+T operate with asymmetric power supplies?
Yes, the MAX4656EUA+T supports asymmetric dual supplies - for example, V+ = +12V and V− = −5V - as long as the total V+ to V− differential remains within the absolute maximum rating of 44V. This flexibility allows optimization of analog signal range in mixed-voltage systems, such as interfacing with both ±12V op-amps and +5V logic domains simultaneously.
What is the off-isolation performance of MAX4656EUA+T at 1MHz?
At 1MHz, the MAX4656EUA+T provides -77dB off-isolation into a 50Ω load, measured as 20log10(VCOM/VNO) with the switch in the off state. This high isolation minimizes crosstalk between inactive channels in multi-path audio or communication systems, and remains effective up to 100MHz before rolling off due to channel capacitance effects.
How does the exposed paddle (EP) on MAX4656EUA+T affect thermal performance?
The exposed paddle on the MAX4656EUA+T must be soldered directly to a V+ copper plane to achieve its rated 825mW continuous power dissipation at +70°C. Without proper thermal connection, junction temperature rise exceeds specifications, degrading RON, leakage, and reliability. The µMAX package's EP-to-V+ requirement is explicitly defined in Maxim's thermal guidelines and differs from standard GND-connected paddles.
MAX4656EUA+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:
- 1
- On-State Resistance (Max):
- 10Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 9V ~ 40V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 200ns, 100ns
- -3db Bandwidth:
- 210MHz
- Charge Injection:
- 23pC
- Channel Capacitance (CS(off), CD(off)):
- 25pF, 25pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4656EUA+T FAQ
1.How can I place an order for MAX4656EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4656EUA+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 MAX4656EUA+T reliable?
The price and inventory of MAX4656EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4656EUA+T is usually 5 days.
3.What payment methods are accepted for MAX4656EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4656EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4656EUA+T?
MAX4656EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4656EUA+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 MAX4656EUA+T?
For technical support, including MAX4656EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4656EUA+T requirements.
6.How does Aetrix verify that MAX4656EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4656EUA+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 MAX4656EUA+T meets industry standards.
7.What is the process for return or replacement of MAX4656EUA+T?
All MAX4656EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4656EUA+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 MAX4656EUA+T part is unused and in its original packaging.
Return procedure for MAX4656EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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