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Analog Devices Inc./Maxim Integrated MAX4502EXK+T
- Part No.:
- MAX4502EXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX4502EXK+T.pdf
- Description:
- IC SW SPST-NCX1 250OHM SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,873
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Product details
Overview
MAX4502EXK+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 TTL/CMOS-compatible logic thresholds-used in battery-powered audio routing and low-voltage data-acquisition front-ends.
For engineers reviewing the MAX4502EXK+T datasheet, MAX4502EXK+T pinout, MAX4502EXK+T application, or MAX4502EXK+T equivalent, this page delivers verified electrical specs, SC70-5 package details, functional truth table, leakage behavior across temperature, and real-world selection guidance for SPST analog switch replacement in space-constrained portable systems.
Technical Context
The MAX4502EXK+T implements a complementary CMOS transmission gate architecture with internal level-shifting logic that translates 0.8V/2.4V input thresholds into full V+/GND gate drive-enabling robust switching under +5V supply while maintaining compatibility with TTL outputs. Its analog path features symmetric ESD diodes to V+ and GND on COM, NC, and IN pins, defining leakage paths independent of signal direction.
No internal substrate biasing beyond V+ connection is used; all analog terminals (COM, NC, IN) share identical ESD protection topology. The device lacks enable/disable sequencing control or power-down mode-operation is strictly determined by the digital input state relative to its fixed logic thresholds, with no hysteresis or programmable delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Normally closed (NC) SPST analog switch-conducts when IN = LOW, opens when IN = HIGH. |
| Supply Range | +2V to +12V single supply-supports direct integration into 3.3V, 5V, and 9V battery-powered rails without level shifters. |
| On-Resistance | 250Ω max at +5V, TA = +25°C-ensures <1% gain error in 10kΩ impedance signal paths; increases to ~800Ω at +3V. |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C-preserves accuracy in high-impedance sensor multiplexing and sample-hold circuits. |
| Charge Injection | 10pC typical-limits voltage glitch on sampled nodes; critical for precision ADC front-end switching below 16-bit resolution. |
| Switching Speed | tON = 75ns, tOFF = 50ns (RL = 1kΩ, CL = 35pF)-enables >1MHz channel scanning in data acquisition without inter-channel crosstalk buildup. |
| Logic Compatibility | 0.8V low / 2.4V high thresholds at +5V-directly interfaces with standard CMOS and TTL outputs without external pull-ups or translators. |
Pinout & Package
MAX4502EXK+T is packaged in a 5-pin SC70-5 (also known as SOT-353) surface-mount package measuring 2.0mm × 1.25mm × 0.95mm, optimized for ultra-compact portable designs. Pin 1 is marked with a dot; pin numbering follows standard SC70 convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply rail | Powers analog switch core and internal logic; sets analog signal range limits (GND to V+); must be decoupled locally. |
| 2 - NC | No internal connection | Unused pin-no bond wire or die connection; electrically floating; may be left unconnected or tied to GND for mechanical stability. |
| 3 - IN | Digital control input | Active-low logic input: LOW = switch closed (COM–NC path conductive); HIGH = switch open; 0.8V/2.4V thresholds at +5V. |
| 4 - GND | Ground reference | Analog and digital ground return; ESD diodes on all signal pins reference this node; must be low-impedance and star-connected. |
| 5 - COM | Analog common terminal | Bidirectional analog node-connects to NC when IN = LOW; interchangeable with NC/NO per datasheet; requires clean analog layout. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full-swing signals from GND to V+, enabling use with op-amps, ADCs, and DACs without clipping in single-supply systems. |
| Low 10pC charge injection | Minimizes voltage transient on high-Z nodes (e.g., ADC sample capacitors), preserving DC accuracy and reducing settling time. |
| Guaranteed 250Ω on-resistance | Ensures predictable channel resistance over temperature and supply voltage-critical for gain-setting and calibration stability. |
| 1nA off-leakage at +25°C | Enables reliable multiplexing of microamp-level sensor outputs (e.g., thermocouples, photodiodes) without signal corruption. |
| SC70-5 footprint | Reduces PCB area by >50% vs. SO-8; compatible with standard reflow profiles; suitable for wearables and hearing aids. |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Selecting between microphone inputs or speaker outputs in Bluetooth headsets and portable media players. IC Role / Device Role / Timing Role: NC SPST analog switch routing bidirectional audio paths with minimal THD and insertion loss. Use Value: 250Ω on-resistance and <−100dB off-isolation at 100kHz preserve SNR >90dB; 10pC charge injection prevents pop/click artifacts during switching. |
Use Scenario: Multiplexing thermistor, RTD, or strain gauge signals into a 16-bit SAR ADC in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog switch isolating high-impedance sensors from ADC input during sampling intervals. Use Value: 1nA off-leakage ensures <0.1% measurement error on 10MΩ sensor sources; rail-to-rail support enables full ADC input range utilization. |
| PCMCIA Card Signal Switching | Cellular Phone Baseband Interface |
|
Use Scenario: Enabling/disabling analog I/O lines (audio codec, modem interface) on hot-pluggable PCMCIA cards. IC Role / Device Role / Timing Role: Voltage-tolerant SPST switch managing signal connectivity during card insertion/removal sequences. Use Value: +2V to +12V operation accommodates legacy 3.3V/5V PCMCIA buses; 2.4V logic threshold ensures reliable detection even with marginal VCC droop. |
Use Scenario: Isolating RF transceiver baseband I/Q lines from auxiliary codecs or diagnostic test points in GSM/WCDMA handsets. IC Role / Device Role / Timing Role: Low-capacitance analog switch providing signal path integrity during RF calibration and factory test modes. Use Value: 3pF off-capacitance minimizes RF coupling into adjacent bands; fast 50ns turn-off prevents transient feedthrough into sensitive receive chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4502EUK-T | Identical electrical specs and SC70-5 package; differs only in tape-and-reel packaging (EUK-T uses 3k/reel, EXK+T uses 2.5k/reel) and top-mark (AAAB vs AAE). | No functional difference-both rated −40°C to +85°C; same pinout, timing, and leakage performance. | Select MAX4502EUK-T if requiring standard 3k-reel volume packaging; MAX4502EXK+T preferred for prototyping or mixed-BOM builds with smaller reels. |
| ADG821BRMZ-REEL | Normally closed SPST switch in 6-lead SOT-23; 0.5Ω on-resistance at 3V but higher 20nA off-leakage at +85°C; logic thresholds not TTL-compatible. | Better on-resistance for low-voltage precision, but higher leakage limits use in high-Z sensor muxing; requires 1.8V–5.5V logic interface. | Choose ADG821BRMZ-REEL only when sub-1Ω RON is mandatory and leakage tolerance >10nA; avoid where TTL-level control or 1nA leakage is required. |
Compared with MAX4502EXK+T, MAX4502EUK-T offers identical functionality in a different reel configuration, while ADG821BRMZ-REEL trades lower on-resistance for higher leakage and non-TTL logic-making MAX4502EXK+T optimal for battery-powered systems needing guaranteed 1nA leakage and direct TTL interfacing.
Availability
MAX4502EXK+T is available at Aetrix Electronics and suitable for battery-operated equipment, portable audio routing, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4502EXK+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4501/MAX4502 family was designed specifically for low-voltage, space-constrained analog signal routing-emphasizing rail-to-rail operation, nanoscale leakage control, and SC70/SOT23 packaging for portable electronics.
FAQ
What is the maximum supply voltage rating for MAX4502EXK+T?
The MAX4502EXK+T has an absolute maximum V+ rating of +13V. However, its specified operational range is +2V to +12V. Operation above +12V risks exceeding guaranteed parameters such as on-resistance and leakage current-even if within absolute ratings-and is not recommended for production designs. Always maintain V+ ≤ +12V for compliance with datasheet performance guarantees.
Is MAX4502EXK+T pin-compatible with MAX4501EXK+T?
No, MAX4502EXK+T is not pin-compatible with MAX4501EXK+T. Although both use the SC70-5 package, their pin functions differ: MAX4502EXK+T assigns Pin 5 to COM and Pin 2 to NC, whereas MAX4501EXK+T assigns Pin 5 to NO and Pin 2 to COM. Swapping them without board revision will result in incorrect switching behavior or open-circuit conditions.
Does MAX4502EXK+T support bidirectional analog signal flow?
Yes, MAX4502EXK+T supports fully bidirectional analog signal flow between COM and NC terminals. The datasheet explicitly states that COM, NC, and NO pins are "identical and interchangeable" with no internal polarity-signals pass with equal fidelity in either direction, making it suitable for AC-coupled audio, differential sensor interfaces, and shared bus architectures.
What is the thermal performance of MAX4502EXK+T in SC70-5 package?
The MAX4502EXK+T in SC70-5 has a maximum continuous power dissipation of 200mW at +70°C, derating at 2.5mW/°C above that temperature. At +85°C ambient, usable power drops to 162.5mW. This limits sustained current through the switch to ~13mA at 12V (P = I²R), confirming suitability for signal-level-not power-level-switching applications.
Can MAX4502EXK+T be used with a +3.3V supply and 3.3V logic levels?
Yes, MAX4502EXK+T operates reliably with a +3.3V supply and 3.3V logic inputs. Its logic thresholds scale with V+: at +3.3V, VINL ≈ 0.8V and VINH ≈ 2.0V (per design correlation), well within 3.3V logic swing. However, on-resistance rises to ~600Ω, and off-leakage remains within spec-confirming viability for low-speed, low-power 3.3V systems.
MAX4502EXK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- SC-70-5
MAX4502EXK+T FAQ
1.How can I place an order for MAX4502EXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4502EXK+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 MAX4502EXK+T reliable?
The price and inventory of MAX4502EXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4502EXK+T is usually 5 days.
3.What payment methods are accepted for MAX4502EXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4502EXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4502EXK+T?
MAX4502EXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4502EXK+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 MAX4502EXK+T?
For technical support, including MAX4502EXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4502EXK+T requirements.
6.How does Aetrix verify that MAX4502EXK+T is sourced from the original manufacturer or authorized distributors?
All MAX4502EXK+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 MAX4502EXK+T meets industry standards.
7.What is the process for return or replacement of MAX4502EXK+T?
All MAX4502EXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4502EXK+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 MAX4502EXK+T part is unused and in its original packaging.
Return procedure for MAX4502EXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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