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Analog Devices Inc./Maxim Integrated MAX4655EUA+
- Part No.:
- MAX4655EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4655EUA+.pdf
- Description:
- IC SWITCH SPST-NCX1 10OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,040
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Product details
Overview
MAX4655EUA+ from Maxim Integrated is a normally closed (NC), single-pole/single-throw (SPST), high-current CMOS analog switch in an 8-pin µMAX package. It delivers ≤10Ω on-resistance at ±15V supplies, supports ±300mA continuous/±400mA peak switching current, and operates from ±4.5V to ±20V dual supplies or +9V to +40V single supply - ideal for relay replacement in test equipment and audio signal routing.
For engineers reviewing the MAX4655EUA+ datasheet, MAX4655EUA+ pinout, MAX4655EUA+ application, or MAX4655EUA+ equivalent, key selection criteria include NC logic state, rail-to-rail analog signal handling, 1nA max off-leakage at +25°C, 210MHz -3dB bandwidth, and compatibility with DG417/DG418 layouts in space-constrained industrial and communications systems.
Technical Context
The MAX4655EUA+ implements a parallel N-channel/P-channel MOSFET switch architecture with proprietary body-drive sensing to eliminate voltage-drop limitations typical of standard CMOS switches. This enables stable on-resistance and low leakage across its full ±40V V+–V− range without parasitic diode conduction.
It accepts TTL/CMOS-compatible digital control (VIH = 2.4V, VIL = 0.8V) and requires no VL bias rail. Signal paths support bidirectional rail-to-rail operation, with 1Ω max RON flatness over ±10V input range and 25pF off-capacitance for minimal crosstalk in high-frequency audio and xDSL applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPST, normally closed (NC) - COM connected to NC when IN = 0V |
| On-Resistance (RON) | ≤10Ω at ±15V supplies - ensures <15mV drop at 300mA load, critical for precision analog routing |
| Continuous Current | ±300mA - supports high-power audio loads and redundant system switching without external buffering |
| Off-Leakage Current | ≤1nA at TA = +25°C - preserves signal integrity in high-impedance sensor or measurement circuits |
| -3dB Bandwidth | 210MHz - maintains fidelity for broadband signals up to 100MHz in communication front-ends |
| Supply Range | ±4.5V to ±20V dual or +9V to +40V single - enables flexible biasing in mixed-signal industrial power rails |
| Turn-On/Off Time | 110ns/75ns typical - meets timing requirements for fast-switching test instrumentation and multiplexed data acquisition |
Pinout & Package
MAX4655EUA+ uses an 8-pin µMAX package (3.0mm × 3.0mm, 0.65mm pitch) with exposed paddle (EP) for thermal enhancement. Pin 1 is COM; pins 2 and 5 are no-connect; pin 3 is GND; pin 4 is V+; pin 6 is digital control input (IN); pin 7 is V−; pin 8 is NC (normally closed terminal); EP must be connected to V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog Switch Common | Central node connecting to NC when switch is de-energized; bidirectional signal path |
| 2, 5 - N.C. | No Internal Connection | Unbonded pads - must remain unconnected per datasheet; no internal circuitry |
| 3 - GND | Ground Reference | Return path for digital control and substrate bias; ties to system ground plane |
| 4 - V+ | Positive Supply Input | Supplies both analog switch core and control logic; EP must connect here for thermal performance |
| 6 - IN | Digital Control Input | TTL/CMOS-compatible logic input; low = NC closed, high = NC open (inverted logic sense) |
| 7 - V− | Negative Supply Input | Completes dual-supply rail; sets lower analog signal limit; not required if single-supply used |
| 8 - NC | Normally Closed Terminal | Connected to COM when IN = 0V; open-circuit when IN = high; carries full switched current |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs from V− to V+ without clipping - essential for ±15V op-amp interfaces and audio line-level routing |
| 1Ω max RON flatness | Ensures consistent gain and THD across full signal swing - critical for high-fidelity audio and precision instrumentation |
| No VL bias required | Eliminates need for auxiliary logic supply - simplifies PCB layout and reduces BOM count in embedded systems |
| Pin compatibility with DG417/DG418 | Enables drop-in upgrade path from legacy switches without layout changes - accelerates design reuse and qualification |
| Exposed paddle thermal interface | Improves power dissipation capability to 825mW at +70°C - sustains 300mA continuous current in compact µMAX footprint |
Applications
| Relay Replacement | Test Equipment |
|---|---|
Use Scenario: Replacing electromechanical relays in automated test fixtures requiring >1 million cycles and sub-millisecond switching. IC Role / Device Role / Timing Role: SPST NC analog switch providing fail-safe closed path during power loss and fast electronic control via TTL input. Use Value: Eliminates mechanical wear, bounce, and coil drive circuitry while maintaining ±300mA contact rating and 1nA leakage for high-impedance DUT interfacing. | Use Scenario: Signal path selection in multichannel benchtop analyzers and semiconductor parametric testers. IC Role / Device Role / Timing Role: High-bandwidth, low-distortion analog switch routing DC–100MHz signals between sources, DUTs, and measurement front-ends. Use Value: 210MHz bandwidth and 0.007% THD preserve signal fidelity; 110ns tON enables rapid channel scanning in production test sequences. |
| Audio Signal Routing | xDSL Modems |
Use Scenario: Channel selection and mute control in professional audio mixers and PC multimedia boards handling line-level and headphone outputs. IC Role / Device Role / Timing Role: Bidirectional NC switch managing analog audio paths with rail-to-rail swing and minimal crosstalk. Use Value: 25pF off-capacitance and 77dB off-isolation at 1MHz prevent inter-channel bleed; low RON flatness avoids tonal coloration. | Use Scenario: Line driver protection and hybrid circuit switching in ADSL/VDSL transceivers operating across 0.1–30MHz bands. IC Role / Device Role / Timing Role: High-voltage analog switch isolating sensitive PHY components from line surges and enabling dynamic impedance matching. Use Value: ±20V dual-supply operation handles line transients; 400mA peak current supports surge testing compliance; low charge injection (<23pC) prevents click/pop artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4656EUA+ | Same package and pinout, but normally open (NO) logic state - COM disconnected when IN = 0V | Suitable where default-open safety behavior is required (e.g., power sequencing, fault isolation) | Select MAX4656EUA+ only when NC functionality is not needed; identical electrical specs otherwise |
| DG417LN+ | Legacy 8-pin SOIC device; 35Ω max RON at ±15V; 100mA continuous rating; no exposed paddle | Limited to lower-current, less thermally demanding applications; lacks µMAX size and modern leakage/bandwidth | Choose DG417LN+ only for legacy board refreshes where pin compatibility is mandatory and performance margins allow |
Compared with MAX4656EUA+, the MAX4655EUA+ provides fail-safe continuity during control loss, while DG417LN+ trades bandwidth and leakage performance for broader legacy availability - making MAX4655EUA+ optimal for new designs prioritizing reliability, speed, and thermal efficiency in NC configurations.
Availability
MAX4655EUA+ is available at Aetrix Electronics and suitable for relay replacement, test equipment, audio signal routing, and xDSL modems requiring stable component supply, long-term manufacturability, and guaranteed traceable sourcing.
Supply support for MAX4655EUA+ 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 high-reliability ICs for industrial, communications, and computing applications.
The MAX4655–MAX4658 family was engineered to replace electromechanical relays with solid-state reliability and speed in high-current analog signal paths - targeting test, telecom, and pro-audio systems needing robust ±20V operation and sub-10Ω on-resistance.
FAQ
What is the logic configuration of the MAX4655EUA+?
The MAX4655EUA+ is a normally closed (NC) SPST analog switch: when the IN pin is logic low (≤0.8V), the COM and NC terminals are connected; when IN is logic high (≥2.4V), the path opens. This fail-safe behavior ensures continuity during power loss or control failure - a key distinction from the NO MAX4656EUA+ variant.
Can the MAX4655EUA+ operate from a single supply?
Yes, the MAX4655EUA+ supports single-supply operation from +9V to +40V (V− tied to GND). Its rail-to-rail analog signal range extends from GND to V+, and all specifications - including ≤10Ω RON and ±300mA current - are validated under +12V single-supply conditions per the datasheet's Electrical Characteristics table.
What is the maximum allowable voltage difference between V+ and V− for the MAX4655EUA+?
The MAX4655EUA+ has an absolute maximum V+–V− rating of +44V. Operation is specified across ±4.5V to ±20V dual supplies, meaning the total differential can reach 40V in normal use. Exceeding +44V risks permanent damage, and asymmetrical supplies (e.g., +24V/–12V) are permitted as long as the 44V limit and individual pin ratings are observed.
How does the exposed paddle (EP) on the MAX4655EUA+ package affect thermal performance?
The exposed paddle on the MAX4655EUA+ µMAX package must be soldered to a V+-connected copper pour to achieve rated thermal performance. With this connection, the device dissipates up to 825mW at +70°C ambient (derating 10.3mW/°C above), enabling sustained ±300mA continuous current - a 2.3× improvement over non-EP variants like SO-8.
Is the MAX4655EUA+ pin-compatible with industry-standard analog switches?
Yes, the MAX4655EUA+ is explicitly pin-compatible with the DG417 and DG418 series in the same 8-pin µMAX footprint. Pin functions match directly: COM (1), GND (3), V+ (4), IN (6), V− (7), NC/NO (8), with pins 2 and 5 as no-connect. This allows direct substitution in existing DG417-based designs without layout modification.
MAX4655EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 10Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- 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
MAX4655EUA+ FAQ
1.How can I place an order for MAX4655EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4655EUA+ 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 MAX4655EUA+ reliable?
The price and inventory of MAX4655EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4655EUA+ is usually 5 days.
3.What payment methods are accepted for MAX4655EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4655EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4655EUA+?
MAX4655EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4655EUA+ 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 MAX4655EUA+?
For technical support, including MAX4655EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4655EUA+ requirements.
6.How does Aetrix verify that MAX4655EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX4655EUA+ 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 MAX4655EUA+ meets industry standards.
7.What is the process for return or replacement of MAX4655EUA+?
All MAX4655EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4655EUA+, 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 MAX4655EUA+ part is unused and in its original packaging.
Return procedure for MAX4655EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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