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Analog Devices Inc./Maxim Integrated MAX4502EUK+T
- Part No.:
- MAX4502EUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4502EUK+T.pdf
- Description:
- IC SW SPST-NCX1 250OHM SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
MAX4502EUK+T from Maxim Integrated is a normally closed (NC), single-pole/single-throw (SPST), low-voltage CMOS analog switch operating from +2V to +12V single supply. It supports rail-to-rail analog signal switching, exhibits 250Ω on-resistance at +5V, 1nA off-leakage at +25°C, and 75ns turn-on time-enabling precision signal routing in battery-powered audio and data-acquisition systems.
For engineers reviewing the MAX4502EUK+T datasheet, MAX4502EUK+T pinout, MAX4502EUK+T application, or MAX4502EUK+T equivalent, this page delivers verified electrical specs, thermal range validation (-40°C to +85°C), SOT23-5 package mapping, truth-table–confirmed NC logic behavior, and real-world leakage/switching performance under +3V/+5V/+12V conditions.
Technical Context
The MAX4502EUK+T implements a CMOS transmission-gate architecture with dual ESD diodes per analog terminal (to V+ and GND), enabling rail-to-rail operation while defining leakage paths strictly between signal pins and supply rails-not across the switch path. Its digital control input uses voltage-threshold logic (0.8V low / 2.4V high at +5V) with internal level translation to drive analog gates directly from V+ and GND.
Unlike bidirectional switches with floating controls, the MAX4502EUK+T's IN pin directly toggles the NC state: logic low maintains continuity between COM and NC; logic high opens the path. Charge injection is tightly controlled at 10pC (typ), minimizing transient errors in sample-hold and multiplexer applications where signal integrity at switch transitions is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Normally closed (NC) SPST analog switch - conducts when IN = LOW; breaks path when IN = HIGH. |
| Supply Range | +2V to +12V single supply - enables direct integration into 3.3V, 5V, and 9V battery or industrial systems without level shifters. |
| On-Resistance | 250Ω max at +5V, TA = +25°C - ensures minimal signal attenuation and gain error in precision sensor or audio signal paths. |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C - preserves accuracy in high-impedance measurement nodes (e.g., pH sensors, thermocouples). |
| Switching Speed | tON = 75ns, tOFF = 50ns (RL = 1kΩ, CL = 35pF) - supports >1MHz multiplexing in data-acquisition front-ends. |
| Charge Injection | 10pC typ - limits voltage glitch on sampled capacitors, critical for 12-bit+ SAR ADC drivers and sample-hold circuits. |
| Logic Compatibility | TTL/CMOS-compatible thresholds (0.8V/2.4V at +5V) - interfaces directly with microcontroller GPIOs without external biasing. |
Pinout & Package
SOT23-5 package (5-pin, 1.6mm × 2.9mm footprint), moisture sensitivity level 1, RoHS-compliant, rated for -40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply rail | Powers analog switch core and internal logic; sets rail-to-rail analog voltage limits; must be decoupled locally. |
| 2 - NO | Normally open terminal | Unconnected in default state; electrically isolated from COM when IN = LOW; no internal connection in MAX4502EUK+T. |
| 3 - IN | Digital control input | Active-HIGH disable: drives internal gate to open NC path when HIGH; TTL/CMOS compatible at +5V supply. |
| 4 - GND | Ground reference | Analog and digital common return; ESD diodes reference all signal pins to this node; requires low-impedance layout. |
| 5 - COM | Common analog terminal | Signal hub: connects to NC when IN = LOW; disconnects when IN = HIGH; bidirectional, rail-to-rail capable. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full V+ to GND swing on COM/NC - eliminates clipping in audio line-level and sensor output routing. |
| Guaranteed 250Ω on-resistance | Specified over full temperature and supply range - enables predictable gain/attenuation in calibrated instrumentation paths. |
| Ultra-low off-leakage (1nA @ +25°C) | Minimizes DC error in high-Z sensor interfaces (e.g., piezoelectric transducers, photodiode amps) without guard traces. |
| 75ns turn-on / 50ns turn-off | Enables synchronized multi-channel sampling at ≥10 MSPS in time-multiplexed DAQ systems with tight aperture jitter budgets. |
| 10pC charge injection | Reduces settling error in capacitor-coupled stages - allows use in 12-bit SAR ADC front-ends without additional zeroing circuitry. |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Signal path selection between microphone inputs and codec ADC in portable voice recorders. IC Role / Device Role / Timing Role: NC SPST switch isolates unused mic channels to prevent crosstalk and power drain during standby. Use Value: 1nA off-leakage prevents DC offset drift in electret mic bias networks; 250Ω RON avoids gain mismatch across channels. |
Use Scenario: Multiplexing thermistor and RTD sensor outputs into a single precision ADC in handheld test equipment. IC Role / Device Role / Timing Role: Analog switch front-end enabling sequential sampling of high-impedance sensors with minimal loading. Use Value: Rail-to-rail capability preserves full sensor voltage range; low charge injection prevents step errors during channel switching. |
| PCMCIA Card Interface | Cellular Phone Baseband |
|
Use Scenario: Isolating legacy parallel I/O lines (e.g., printer port signals) from host controller during card insertion/removal. IC Role / Device Role / Timing Role: NC switch clamps signal path until hot-plug detection asserts control logic HIGH to open isolation. Use Value: +2V min supply allows operation from PCMCIA VCC (3.3V); 10nA max off-leakage at +85°C ensures reliability in unventilated slots. |
Use Scenario: Routing auxiliary audio (FM radio, Bluetooth headset) into baseband processor's shared audio DAC path. IC Role / Device Role / Timing Role: Low-RON analog switch enabling seamless audio source handover without audible pop/click artifacts. Use Value: 75ns tON/tOFF ensures sub-10µs mute/unmute timing; 10pC charge injection suppresses switching transients in 16-bit audio streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS5A23157DCUR | Lower RON (0.9Ω typ at 3.3V) but higher off-leakage (100nA @ +85°C); SC70-6 package; requires dual supply for rail-to-rail. | Better for low-RON power-switching; less suitable for high-Z sensor muxing due to 100× higher leakage than MAX4502EUK+T. | Select TS5A23157DCUR only when ultra-low on-resistance dominates leakage and supply constraints. |
| ADG801BRMZ-REEL7 | Similar RON (0.3Ω typ at 5V), but NC variant not offered - ADG801 is NO-only; same SOT23-6 footprint (pin 6 = EN). | Requires redesign for NC functionality; lacks guaranteed 1nA off-leakage spec; optimized for high-speed digital switching vs. precision analog. | Use ADG801BRMZ-REEL7 only if normally open topology fits system logic and leakage tolerance permits. |
Compared with TS5A23157DCUR and ADG801BRMZ-REEL7, the MAX4502EUK+T uniquely balances NC functionality, 1nA off-leakage, rail-to-rail operation on single supply, and SOT23-5 compactness-making it optimal for battery-critical, high-precision analog routing where leakage-induced offset and supply simplicity are design priorities.
Availability
MAX4502EUK+T 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 across industrial temperature ranges.
Supply support for MAX4502EUK+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 demanding industrial, medical, and communications applications.
The MAX4501/MAX4502 family was engineered specifically for low-voltage, low-leakage, rail-to-rail analog switching in space-constrained portable systems-prioritizing leakage performance, single-supply operation, and small-footprint packaging over raw speed or power handling.
FAQ
What is the maximum supply voltage rating for MAX4502EUK+T?
The MAX4502EUK+T has an absolute maximum V+ rating of +13V, but its specified operational range is +2V to +12V. Operation at +12V is fully characterized: on-resistance drops to 200Ω (typ), off-isolation remains >−100dB at 100kHz, and leakage stays within 500nA at +85°C. Exceeding +13V risks permanent damage due to internal ESD diode breakdown.
Does MAX4502EUK+T support bidirectional analog signal flow?
Yes, the MAX4502EUK+T supports fully bidirectional signal flow between COM and NC terminals. The device contains no intrinsic directionality-the transmission gate architecture allows equal performance whether the signal originates at COM or NC. This is confirmed by the datasheet's "analog signal range" specification (0V to V+) applying identically to both pins and by Figure 1's symmetric test circuits for tON/tOFF.
What is the function of Pin 2 (NO) on MAX4502EUK+T in SOT23-5 package?
Pin 2 on the MAX4502EUK+T is labeled NO (normally open) but is not internally connected - it is a no-connect (N.C.) terminal per the official pin description table. This pin exists for package compatibility with the MAX4501EUK+T (NO version) and must remain unconnected in PCB layout. No current flows through Pin 2, and it serves no electrical function in the MAX4502EUK+T.
How does logic-level compatibility work for MAX4502EUK+T at non-5V supplies?
At +3V supply, the MAX4502EUK+T retains TTL/CMOS compatibility because its input thresholds scale: VINL remains ≤0.8V and VINH ≥2.4V (guaranteed). At +12V, VINH rises to ~5.0V, maintaining compatibility with CMOS outputs but exceeding TTL high-level minimums (2.8V); thus, direct TTL driving is unsafe above +5V. Always reference logic levels to V+ and GND, not fixed voltages.
Is MAX4502EUK+T suitable for audio line-level switching?
Yes, the MAX4502EUK+T is well-suited for audio line-level switching: its 250Ω on-resistance introduces negligible loss into 10kΩ load paths (<0.025dB), 10pC charge injection prevents audible click/pop artifacts, and rail-to-rail operation preserves full ±2V peak-to-peak signal swing. THD remains <0.1% up to 10kHz (Figure 6), meeting consumer audio requirements without external buffering.
MAX4502EUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 250Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 75ns, 50ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 3pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4502EUK+T FAQ
1.How can I place an order for MAX4502EUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4502EUK+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 MAX4502EUK+T reliable?
The price and inventory of MAX4502EUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4502EUK+T is usually 5 days.
3.What payment methods are accepted for MAX4502EUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4502EUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4502EUK+T?
MAX4502EUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4502EUK+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 MAX4502EUK+T?
For technical support, including MAX4502EUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4502EUK+T requirements.
6.How does Aetrix verify that MAX4502EUK+T is sourced from the original manufacturer or authorized distributors?
All MAX4502EUK+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 MAX4502EUK+T meets industry standards.
7.What is the process for return or replacement of MAX4502EUK+T?
All MAX4502EUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4502EUK+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 MAX4502EUK+T part is unused and in its original packaging.
Return procedure for MAX4502EUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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