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Analog Devices Inc./Maxim Integrated MAX4628EUT
- Part No.:
- MAX4628EUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX4628EUT.pdf
- Description:
- IC SW SPSTX1 500MOHM SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,017
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Product details
Overview
MAX4628EUT from Maxim Integrated is a low-on-resistance, normally open (NO), single-pole/single-throw (SPST) analog switch operating from +1.8V to +5.5V single supply. It features dual digital control inputs, 0.5Ω max on-resistance at +5V, 50ns max turn-on time, and integrated overcurrent protection-enabling robust signal routing in battery-powered audio/video systems and low-voltage data-acquisition circuits.
For engineers reviewing the MAX4628EUT datasheet, MAX4628EUT pinout, MAX4628EUT application, or MAX4628EUT equivalent, key selection criteria include its SOT23-6 package, dual-control logic behavior, ±400mA continuous current rating, 0.1Ω max RON flatness, and TTL-compatible inputs at +5V.
Technical Context
The MAX4628EUT implements a CMOS-based SPST analog switch with two complementary logic inputs (IN and IN) that drive an internal gate structure to control conduction between COM and NO terminals. Its overcurrent protection uses voltage-drop sensing across the channel (0.6V typical trip threshold) with thermal shutdown and auto-cycling recovery (5ms on/off cycle under sustained overload).
It supports rail-to-rail analog signal switching from GND to V+, maintains bidirectional operation, and guarantees TTL-compatible logic thresholds (VINH = 2.4V, VINL = 0.8V) when V+ = +5V-ensuring interoperability with standard microcontroller GPIOs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.5Ω max at +5V - enables <10mV drop at 20mA, critical for precision sensor signal paths |
| RON Flatness | 0.1Ω max at +5V - ensures consistent gain/attenuation across full 0–5V analog range |
| Turn-On Time (tON) | 50ns max - supports >10MHz digital signal routing and fast multiplexing |
| Turn-Off Time (tOFF) | 30ns max - minimizes crosstalk and transient coupling in high-speed switching |
| Overcurrent Threshold | 2.4A typical - protects against shorted loads while tolerating 800mA peak pulsed current |
| Analog Signal Range | 0V to V+ - allows full-supply-range signal pass-through without clipping or distortion |
| Logic Input Compatibility | TTL at +5V - directly interfaces with 5V microcontrollers, FPGAs, and logic families |
Pinout & Package
SOT23-6 package: ultra-compact 6-pin surface-mount outline (1.6mm × 2.9mm × 1.1mm), thermally enhanced for power dissipation up to 571mW at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog common terminal - bidirectional I/O node connected to load or source |
| 2 | NO | Normally open analog terminal - conducts only when switch is enabled |
| 3 | GND | Ground reference - required for logic and analog return path stability |
| 4 | IN | Digital control input - active-high enables conduction (IN = HIGH → ON) |
| 5 | IN | Inverted digital control input - active-low enables conduction (IN = LOW → ON) |
| 6 | V+ | Positive supply input - powers analog channel and internal logic (1.8V–5.5V) |
Key Features
| Feature | Design Value |
|---|---|
| Dual complementary control inputs | Enables flexible interface with either active-high or active-low logic sources without external inverters |
| Integrated overcurrent protection | Prevents latch-up or permanent damage during accidental shorts or capacitive load surges |
| 0.1Ω RON flatness | Maintains linearity and low THD (<0.01%) across full analog signal swing, essential for audio fidelity |
| Rail-to-rail analog switching | Supports unclipped transmission of signals from GND to V+, simplifying biasing in single-supply systems |
| TTL-compatible logic at +5V | Eliminates need for level translators when interfacing with legacy 5V controllers or peripherals |
Applications
| Audio Signal Routing | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in portable audio devices. IC Role / Device Role / Timing Role: SPST analog switch controlling signal path continuity with sub-50ns timing resolution. Use Value: 0.5Ω RON and 0.1Ω flatness preserve SNR >95dB and minimize insertion loss across 20Hz–20kHz band. | Use Scenario: Multiplexing sensor outputs (e.g., thermistor, ADC reference, battery voltage) in handheld test equipment. IC Role / Device Role / Timing Role: Low-leakage (±20nA off-state) analog switch enabling accurate DC-coupled measurements. Use Value: 1.8V minimum supply allows direct integration into 2-cell Li-ion systems without LDO overhead. |
| Low-Voltage Data Acquisition | PCMCIA/CompactFlash Interface |
Use Scenario: Isolating analog front-end channels before sampling in medical or industrial DAQ modules. IC Role / Device Role / Timing Role: Precision SPST switch providing channel selection with <40pC charge injection. Use Value: Low charge injection prevents baseline shift in high-impedance sensor nodes (<10MΩ), reducing calibration burden. | Use Scenario: Enabling/disabling VCC or I/O lines during PCMCIA card hot-insertion sequences. IC Role / Device Role / Timing Role: Overcurrent-protected power switch managing supply sequencing and fault containment. Use Value: 2.4A overcurrent threshold safely handles card insertion transients while preventing bus collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4626EUK-T | SOT23-5, single control input, NO configuration, same RON and tON specs | Lacks inverted control input; requires external inverter for dual-signal enable logic | Select when board space is constrained and dual-control logic is unnecessary |
| MAX4627EUK-T | SOT23-5, NC configuration, identical supply and timing specs | Normally closed behavior unsuitable for default-isolation safety-critical paths | Select only where fail-safe closure (e.g., default audio path) is required |
Compared with MAX4626EUK-T and MAX4627EUK-T, the MAX4628EUT provides unique dual-control flexibility in a 6-pin footprint-enabling direct interface with both push-pull and open-drain drivers without layout changes or added components.
Availability
MAX4628EUT is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply and long-term sourcing assurance.
Supply support for MAX4628EUT 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, computing, and consumer applications.
The MAX4626/MAX4627/MAX4628 product line delivers ultra-low-RON, single-supply SPST switches optimized for portable and space-constrained systems demanding high signal integrity and fault resilience.
FAQ
What is the maximum continuous current rating for the MAX4628EUT?
The MAX4628EUT supports ±400mA continuous current between COM and NO terminals. This rating is validated across the full operating temperature range (–40°C to +85°C) and ensures reliable conduction without thermal derating under typical PCB copper pour conditions. Exceeding this limit triggers the internal overcurrent protection circuit, which cycles the switch off/on to prevent damage.
Does the MAX4628EUT require separate logic and analog supplies?
No, the MAX4628EUT operates from a single +1.8V to +5.5V supply (V+) for both analog switching and digital control functions. Its logic inputs accept voltages up to +5.5V regardless of V+, enabling direct interface with higher-voltage controllers even when powered from 3.3V or 2.5V rails-eliminating need for dual supplies or level shifters.
How does the dual-control input logic work on the MAX4628EUT?
The MAX4628EUT uses complementary inputs: IN (pin 4) and IN (pin 5). The switch turns ON only when IN = HIGH and IN = LOW simultaneously. This dual-input architecture prevents unintended activation from floating or noisy control lines and supports direct connection to push-pull or open-drain drivers without external logic.
Is the MAX4628EUT pin-compatible with other devices in the MAX462x family?
The MAX4628EUT is not pin-compatible with MAX4626EUK-T or MAX4627EUK-T due to its SOT23-6 package and inclusion of the second control input (IN). While functionally related, the 6-pin layout adds the dedicated IN terminal and repositions GND and V+, making direct PCB replacement impossible without layout revision.
What is the typical charge injection value for the MAX4628EUT, and why does it matter?
The MAX4628EUT exhibits 40pC typical charge injection (Q) at +25°C with CL = 1.0nF. This parameter quantifies transient voltage glitches induced on high-impedance nodes (e.g., sample-and-hold capacitors or sensor outputs) during switching. At 40pC, error voltage remains below 40mV on a 1nF capacitor-critical for maintaining accuracy in precision ADC front-ends and instrumentation amplifiers.
MAX4628EUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - Open
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 500mOhm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 50ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 40pC
- Channel Capacitance (CS(off), CD(off)):
- 65pF, 65pF
- Current - Leakage (IS(off)) (Max):
- 2nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX4628EUT FAQ
1.How can I place an order for MAX4628EUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4628EUT 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 MAX4628EUT reliable?
The price and inventory of MAX4628EUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4628EUT is usually 5 days.
3.What payment methods are accepted for MAX4628EUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4628EUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4628EUT?
MAX4628EUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4628EUT 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 MAX4628EUT?
For technical support, including MAX4628EUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4628EUT requirements.
6.How does Aetrix verify that MAX4628EUT is sourced from the original manufacturer or authorized distributors?
All MAX4628EUT 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 MAX4628EUT meets industry standards.
7.What is the process for return or replacement of MAX4628EUT?
All MAX4628EUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX4628EUT, 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 MAX4628EUT part is unused and in its original packaging.
Return procedure for MAX4628EUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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