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Analog Devices Inc./Maxim Integrated MAX4655ESA+
- Part No.:
- MAX4655ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4655ESA+.pdf
- Description:
- IC SWITCH SPST-NCX1 10OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,706
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Product details
Overview
MAX4655ESA+ from Maxim Integrated is a normally closed (NC), single-pole/single-throw (SPST), high-current CMOS analog switch rated for ±4.5V to ±20V dual-supply or +9V to +40V single-supply operation, with 10Ω max on-resistance at ±15V, 300mA continuous current handling, and rail-to-rail signal capability - used in relay replacement, audio routing, and redundant power-path switching.
For engineers reviewing the MAX4655ESA+ datasheet, MAX4655ESA+ pinout, MAX4655ESA+ application, or MAX4655ESA+ equivalent, key selection criteria include NC logic state, 300mA continuous current rating, 10Ω on-resistance flatness ≤1Ω, -40°C to +85°C temperature range, and SO-8 package compatibility with legacy DG417 layouts.
Technical Context
The MAX4655ESA+ implements a parallel N-channel/P-channel MOSFET switch architecture with proprietary body-drive sensing to eliminate voltage-drop limitations across the channel, enabling full rail-to-rail conduction without parasitic diode turn-on. It operates with TTL/CMOS-compatible digital control and requires no VL bias supply.
Its dual-supply flexibility supports asymmetrical configurations (e.g., +12V/–5V), and its low 1nA off-leakage at +25°C and 210MHz –3dB bandwidth support precision, high-frequency analog signal routing in test equipment and communication systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 10Ω max at ±15V supplies - ensures minimal insertion loss and voltage drop under 300mA load. |
| Continuous Current | ±300mA - supports high-power analog path switching without external buffering. |
| Supply Range | ±4.5V to ±20V (dual); +9V to +40V (single) - enables wide dynamic range in industrial and telecom power domains. |
| Off-Leakage Current | 1nA max at TA = +25°C - preserves signal integrity in high-impedance sensor or precision measurement paths. |
| Turn-On/Off Time | 110ns / 75ns typical - suitable for fast-switching applications like multiplexed test instrumentation. |
| RON Flatness | 1Ω max over full signal range - maintains consistent gain and linearity across rail-to-rail inputs. |
| -3dB Bandwidth | 210MHz - supports video, broadband, and high-speed data routing without attenuation. |
Pinout & Package
MAX4655ESA+ is housed in an 8-pin SO (Small Outline Integrated Circuit) package with exposed paddle option not applicable to the ESA+ variant. Pin 1 is COM (analog common terminal), Pin 3 is GND, Pin 4 is V+, Pin 6 is IN (TTL/CMOS-compatible digital control input), Pin 7 is V-, and Pin 8 is NC (normally closed analog terminal). Pins 2 and 5 are no-connect.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog Switch Common | Shared connection point for bidirectional analog signal routing; must be connected to load or source. |
| 2, 5 - N.C. | No Internal Connection | Unbonded pins; must remain unconnected per design to avoid parasitic coupling. |
| 3 - GND | Ground Reference | System ground reference for digital logic and internal bias circuitry; requires low-impedance PCB tie. |
| 4 - V+ | Positive Supply Input | Accepts +9V to +40V (single) or up to +20V (dual); powers P-channel switch element and control logic. |
| 6 - IN | Digital Control Input | TTL/CMOS-compatible logic input: logic low (≤0.8V) closes switch (COM↔NC); logic high (≥2.4V) opens it. |
| 7 - V- | Negative Supply Input | Accepts –4.5V to –20V (dual); powers N-channel switch element and enables rail-to-rail analog swing. |
| 8 - NC | Normally Closed Terminal | Analog path closed to COM when IN = low; open when IN = high - defines default fail-safe state. |
Key Features
| Feature | Design Value |
|---|---|
| High-current SPST switching | 300mA continuous, 400mA peak - replaces electromechanical relays in high-cycle industrial controls. |
| No VL supply required | Self-biased logic interface - eliminates need for auxiliary voltage rail, simplifying power architecture. |
| Rail-to-rail analog conduction | VCOM swings from V– to V+ - supports full-range signal transmission in ±15V op-amp or DAC interfaces. |
| Low RON flatness | ≤1Ω variation across signal range - ensures distortion-free audio and precision measurement performance. |
| Pin compatibility with DG417 | Identical SO-8 footprint and function - enables drop-in upgrade from legacy analog switches with no PCB redesign. |
Applications
| Relay Replacement | Audio Signal Routing |
|---|---|
Use Scenario: Replacing electromechanical relays in automated test equipment (ATE) fixture switching matrices requiring >1M cycle life and sub-millisecond response. IC Role / Device Role / Timing Role: NC SPST analog switch providing fail-safe closed path during power loss and fast digital-controlled disconnection. Use Value: Eliminates relay wear-out, reduces actuation time from 10ms to <200ns, and enables compact high-density switching arrays. | Use Scenario: Selecting between multiple microphone preamp outputs or routing line-level signals in PC multimedia boards and studio mixers. IC Role / Device Role / Timing Role: Low-distortion, rail-to-rail analog path selector with 0.007% THD and 210MHz bandwidth. Use Value: Preserves audio fidelity across full frequency range while enabling silent, glitch-free channel switching via TTL logic. |
| Redundant Power Path | Communication System Signal Switching |
Use Scenario: Managing automatic switchover between primary and backup DC power rails in PBX, PABX, and VoIP gateway systems. IC Role / Device Role / Timing Role: Normally closed switch maintaining uninterrupted power delivery until fault detection triggers digital disable. Use Value: Provides inherent fail-safe behavior without external supervision circuitry, reducing BOM count and system latency. | Use Scenario: Isolating or selecting between differential analog lines in xDSL modems and broadband access equipment operating up to 30MHz. IC Role / Device Role / Timing Role: High-isolation (–77dB @1MHz), low-capacitance (25pF off-state) analog switch for FDM/TDM channel management. Use Value: Minimizes crosstalk between upstream/downstream channels and maintains signal integrity in noise-sensitive DSL PHY layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4656ESA+ | NO (normally open) configuration; otherwise identical electrical specs and pinout. | Requires active-high enable for default-open behavior - unsuitable where fail-safe closure is mandatory. | Select MAX4656ESA+ only when system logic demands default-open state and timing-critical startup isolation. |
| DG417DN-E3 | Higher 35Ω on-resistance, lower 100mA continuous current, same SO-8 pinout and NC function. | Limited to low-power signal routing; cannot sustain 300mA loads or match 210MHz bandwidth. | Choose DG417DN-E3 only for cost-sensitive, low-current legacy upgrades where performance margin is acceptable. |
Compared with MAX4656ESA+, the MAX4655ESA+ provides fail-safe continuity critical in backup systems; compared with DG417DN-E3, it delivers 3× higher current capacity and 2× wider bandwidth while retaining drop-in compatibility - making it optimal for next-generation high-reliability analog switching.
Availability
MAX4655ESA+ is available at Aetrix Electronics and suitable for relay replacement, audio routing, and redundant power-path switching requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX4655ESA+ 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 applications.
The MAX4655–MAX4658 family was engineered for high-current, high-voltage analog switching in mission-critical systems where reliability, speed, and rail-to-rail performance surpass electromechanical alternatives.
FAQ
What is the logic polarity of the MAX4655ESA+ control input?
The MAX4655ESA+ features normally closed (NC) operation: a logic-low input (≤0.8V) closes the COM–NC path, while a logic-high input (≥2.4V) opens it. This inverse logic behavior is intrinsic to the MAX4655ESA+ design and matches DG417 pin-for-pin functionality, enabling direct substitution in fail-safe circuits where continuity must be maintained during control signal loss or reset.
Can the MAX4655ESA+ operate from a single +12V supply?
Yes, the MAX4655ESA+ supports single-supply operation from +9V to +40V. When powered from +12V, V– must be tied to ground (0V), and the analog signal range extends from 0V to +12V. On-resistance increases slightly versus dual-supply operation (e.g., 22Ω max at +12V vs. 10Ω max at ±15V), but 300mA continuous current and rail-to-rail conduction remain fully functional within this configuration.
Does the MAX4655ESA+ require an external VL bias voltage?
No, the MAX4655ESA+ does not require a VL pin or auxiliary bias supply. Its TTL/CMOS-compatible IN input operates directly from the main V+ and GND (or V–) rails, eliminating the need for level-shifting circuitry. This simplifies board layout and reduces component count - a key advantage over older analog switches that mandate separate logic-supply references.
What is the maximum allowable voltage difference between V+ and V– for the MAX4655ESA+?
The MAX4655ESA+ specifies a maximum V+ to V– differential of 44V. For example, valid combinations include +20V/–20V (40V total), +30V/–10V (40V), or +40V/0V (40V). Exceeding 44V risks permanent damage per Absolute Maximum Ratings, and operation above this limit is not guaranteed even if individual rail voltages remain within ±20V bounds.
How does the MAX4655ESA+ achieve 300mA continuous current capability?
The MAX4655ESA+ achieves 300mA continuous current through a patented body-drive sensing technique that actively controls the N-channel MOSFET's bulk terminal, preventing parasitic diode conduction and thermal runaway. Unlike conventional analog switches limited by ~600mV channel drop, the MAX4655ESA+ sustains full-rated current across the entire V+ to V– range - constrained only by package power dissipation (471mW for SO-8) and absolute maximum ratings.
MAX4655ESA+ 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-SOIC
MAX4655ESA+ FAQ
1.How can I place an order for MAX4655ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4655ESA+ 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 MAX4655ESA+ reliable?
The price and inventory of MAX4655ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4655ESA+ is usually 5 days.
3.What payment methods are accepted for MAX4655ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4655ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4655ESA+?
MAX4655ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4655ESA+ 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 MAX4655ESA+?
For technical support, including MAX4655ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4655ESA+ requirements.
6.How does Aetrix verify that MAX4655ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX4655ESA+ 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 MAX4655ESA+ meets industry standards.
7.What is the process for return or replacement of MAX4655ESA+?
All MAX4655ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4655ESA+, 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 MAX4655ESA+ part is unused and in its original packaging.
Return procedure for MAX4655ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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