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Analog Devices Inc./Maxim Integrated MAX4628EUT-T
- Part No.:
- MAX4628EUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX4628EUT-T.pdf
- Description:
- IC SWITCH SPST-NOX1 500MOHM SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:2,814
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Product details
Overview
MAX4628EUT-T from Maxim Integrated is a low-on-resistance, single-pole/single-throw (SPST), normally open analog switch with dual digital control inputs, operating from +1.8V to +5.5V. It delivers 0.5Ω max on-resistance at +5V, 50ns max turn-on time, and integrated overcurrent protection-ideal for power routing and audio signal switching in battery-operated handheld devices.
For engineers reviewing the MAX4628EUT-T datasheet, MAX4628EUT-T pinout, MAX4628EUT-T application, or MAX4628EUT-T equivalent, key selection criteria include its SOT23-6 package, dual-control logic interface, ±400mA continuous current rating, RON flatness of 0.1Ω, and guaranteed operation across –40°C to +85°C.
Technical Context
The MAX4628EUT-T implements a CMOS transmission-gate architecture with rail-to-rail analog signal handling (0V to V+) and bidirectional signal flow. Its dual-control inputs enable independent enable/disable logic states, supporting both active-high and active-low configurations per truth table.
Overcurrent protection operates via voltage-drop sensing across the channel (0.6V typical threshold), with thermal shutdown and auto-cycling behavior under sustained overload-no external current-sense components required. Logic inputs tolerate up to +5.5V regardless of supply voltage, enabling mixed-voltage system interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.5Ω max at +5V supply - enables <400mA continuous current with <200mV drop |
| RON Flatness | 0.1Ω max at +5V - ensures consistent gain/attenuation across full analog signal range (0V to V+) |
| Turn-On/Off Time | tON = 50ns max, tOFF = 30ns max - supports high-speed multiplexing up to ~10MHz switching rate |
| Analog Signal Range | 0V to V+ - allows rail-to-rail signal pass-through without clipping or distortion |
| Supply Voltage Range | +1.8V to +5.5V - compatible with Li-ion, 3.3V, and 5V systems without level-shifting |
| Overcurrent Threshold | 2.4A typical - protects downstream circuitry during short-circuit events without latch-up |
| Logic Input Compatibility | TTL-compatible at +5V (VINH = 2.4V, VINL = 0.8V) - interfaces directly with microcontroller GPIOs |
Pinout & Package
SOT23-6 package: 1.6mm × 2.9mm footprint, 0.95mm height, gull-wing leads, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Common analog terminal - bidirectional path shared between NO and internal switch |
| 2 | NO | Normally open analog terminal - connects to COM only when switch is enabled |
| 3 | GND | Ground reference - required for logic threshold stability and ESD protection return path |
| 4 | IN | Non-inverted digital control input - high enables switch (logic "1" = ON) |
| 5 | V+ | Positive supply input - powers analog channel and internal logic; must be applied before analog signals |
| 6 | IN | Inverted digital control input - high disables switch (logic "1" = OFF); enables dual-control logic states |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent control inputs | Supports flexible enable/disable logic combinations (e.g., IN = 1 / IN = 0 = ON; IN = 0 / IN = 1 = OFF) without external gates |
| Integrated overcurrent protection | Eliminates need for external current-sense resistors or protection ICs in power-routing applications |
| 0.1Ω RON flatness | Maintains linearity in precision signal paths (e.g., audio, sensor front-ends) across full 0–5V input range |
| Rail-to-rail analog operation | Preserves signal integrity for ±0.1% THD performance up to 100kHz without headroom loss |
| Logic-input overvoltage tolerance | Accepts 0–5.5V logic drive independent of V+ - simplifies interface with mixed-supply SoCs and FPGAs |
Applications
| Power Routing | Audio Signal Switching |
|---|---|
Use Scenario: Dynamic selection of primary/backup power rails in portable medical monitors. IC Role / Device Role / Timing Role: SPST analog switch controlling 3.3V system rail delivery with fast fault isolation. Use Value: 50ns switching prevents brownout during rail switchover; 2.4A overcurrent trip protects LDOs and sensors. | Use Scenario: Channel selection in stereo headphone amplifier output stage. IC Role / Device Role / Timing Role: Low-distortion analog switch routing left/right audio to shared output driver. Use Value: 0.1Ω RON flatness ensures matched channel gain; <40pC charge injection prevents pop/click artifacts. |
| Battery-Operated Equipment | Low-Voltage Data Acquisition |
Use Scenario: Battery voltage monitoring path selection in multi-cell Li-ion packs. IC Role / Device Role / Timing Role: High-impedance analog switch isolating cell voltage sense lines from ADC input. Use Value: 2nA max off-leakage preserves battery life over months; 1.8V operation extends usable battery range. | Use Scenario: Multiplexing thermistor and RTD inputs into a 16-bit SAR ADC. IC Role / Device Role / Timing Role: Precision analog switch providing low-RON, low-charge-injection signal path. Use Value: 0.5Ω RON minimizes gain error; 40pC charge injection avoids ADC code jumps at channel transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4626EUK+T | SOT23-5, single control input, NO configuration only - lacks inverted control input and one pin | Not suitable where dual-control logic or space-constrained PCB layout requires SOT23-6 footprint | Select MAX4626EUK+T only if single-enable logic suffices and board real estate permits SOT23-5 placement |
| TMUX1574DSGR | TI device: 0.5Ω RON, SOT23-6, but no overcurrent protection; logic thresholds scale with V+ | Requires external current-limiting or supervision circuitry in power-switching use cases | Choose TMUX1574DSGR only when overcurrent protection is handled upstream and supply-voltage tracking logic is acceptable |
Compared with MAX4626EUK+T and TMUX1574DSGR, the MAX4628EUT-T uniquely combines dual-control logic, integrated overcurrent protection, and guaranteed 0.1Ω RON flatness in a compact SOT23-6 package-enabling safer, more flexible signal/power routing in space- and reliability-constrained designs.
Availability
MAX4628EUT-T is available at Aetrix Electronics and suitable for power routing, audio signal switching, and battery-operated equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4628EUT-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, automotive, communications, and consumer applications.
The MAX4626/MAX4627/MAX4628 family targets low-voltage, high-reliability analog signal and power routing-emphasizing ultra-low RON, fast switching, and robust fault protection in compact packages.
FAQ
What is the maximum continuous current rating for the MAX4628EUT-T?
The MAX4628EUT-T supports ±400mA continuous current between NO and COM terminals. This rating is valid across the full operating temperature range (–40°C to +85°C) and supply voltages from +1.8V to +5.5V. Exceeding this current triggers the internal overcurrent protection, which cycles the switch off/on until the fault clears. The MAX4628EUT-T datasheet specifies 2.4A typical overcurrent threshold, ensuring robust protection without external components.
Does the MAX4628EUT-T require external protection diodes for overvoltage conditions?
No, the MAX4628EUT-T does not require external protection diodes for standard overvoltage conditions within its absolute maximum ratings. Its logic inputs tolerate up to +5.5V regardless of V+, and analog pins include internal clamping diodes. However, if analog signals may exceed V+ by >0.3V or dip below GND, external diodes (as shown in Figure 1 of the MAX4628EUT-T datasheet) are recommended to prevent latch-up or damage. Adding such diodes reduces analog range by ~0.7V but enhances system-level robustness.
How does the dual-control input logic work on the MAX4628EUT-T?
The MAX4628EUT-T uses two independent digital inputs: IN (pin 4) and IN (pin 6). When IN = high and IN = low, the switch turns ON (COM ↔ NO connected); when IN = low and IN = high, it turns OFF. Both high or both low result in OFF state. This allows flexible logic implementation-e.g., using one input as global enable and the other as channel select-without external inverters. The MAX4628EUT-T truth table confirms these four combinations, making it suitable for safety-critical or redundant control architectures.
What is the charge injection specification for the MAX4628EUT-T, and why does it matter?
The MAX4628EUT-T specifies 40pC maximum charge injection at +25°C, measured with 1.0nF load and zero source resistance. Charge injection causes voltage glitches at the output when the switch toggles, potentially disrupting sensitive circuits like high-resolution ADCs or precision amplifiers. At 40pC, the glitch magnitude is limited to ~40mV into 1nF-low enough to avoid errors in 12-bit systems. This value is confirmed across temperature and supply voltage in the MAX4628EUT-T datasheet's Typical Operating Characteristics plots.
Is the MAX4628EUT-T pin-compatible with any other Maxim analog switches?
The MAX4628EUT-T is not pin-compatible with the MAX4626EUK+T or MAX4627EUK+T due to its SOT23-6 package and dual-control pinout (IN and IN). While the MAX4626/MAX4627 use SOT23-5 with only one logic input, the MAX4628EUT-T adds a sixth pin for the inverted control signal. No Maxim device shares identical pin mapping with the MAX4628EUT-T. Engineers migrating from MAX4626EUK+T must revise PCB layout to accommodate the extra pin and updated routing.
MAX4628EUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- 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-6
MAX4628EUT-T FAQ
1.How can I place an order for MAX4628EUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4628EUT-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 MAX4628EUT-T reliable?
The price and inventory of MAX4628EUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4628EUT-T is usually 5 days.
3.What payment methods are accepted for MAX4628EUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4628EUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4628EUT-T?
MAX4628EUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4628EUT-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 MAX4628EUT-T?
For technical support, including MAX4628EUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4628EUT-T requirements.
6.How does Aetrix verify that MAX4628EUT-T is sourced from the original manufacturer or authorized distributors?
All MAX4628EUT-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 MAX4628EUT-T meets industry standards.
7.What is the process for return or replacement of MAX4628EUT-T?
All MAX4628EUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4628EUT-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 MAX4628EUT-T part is unused and in its original packaging.
Return procedure for MAX4628EUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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