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Analog Devices Inc./Maxim Integrated MAX4502CUK-T
- Part No.:
- MAX4502CUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4502CUK-T.pdf
- Description:
- IC SW SPST-NCX1 250OHM SOT23-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX4502CUK-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, with 250Ω on-resistance at +5V, 1nA off-leakage at +25°C, and rail-to-rail analog signal handling - used in battery-powered audio routing and low-voltage data-acquisition front-ends.
For engineers reviewing the MAX4502CUK-T datasheet, MAX4502CUK-T pinout, MAX4502CUK-T application, or MAX4502CUK-T equivalent, this page delivers verified package mapping (SOT23-5), switching timing (tON = 75ns, tOFF = 50ns), leakage behavior across temperature, logic compatibility details, and real-world substitution guidance for SPST analog switch selection.
Technical Context
The MAX4502CUK-T implements a CMOS transmission-gate topology with internal level-shifting logic that accepts TTL/CMOS-compatible inputs (0.8V/2.4V thresholds at +5V) and drives analog switches between COM and NC terminals. Its V+ and GND pins power both analog and digital sections, with ESD diodes clamping all signal pins to these rails.
It supports bidirectional rail-to-rail analog signals up to the supply rails, exhibits low charge injection (10pC), and maintains stable on-resistance over temperature and supply voltage - critical for precision multiplexing and signal path integrity in portable instrumentation and communications interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2V to +12V single supply - enables direct integration into 3.3V, 5V, and 9V battery systems without level shifters. |
| On-Resistance (RON) | 250Ω max at +5V, +25°C - ensures minimal signal attenuation and gain error in sensor interface and audio paths. |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C - preserves accuracy in high-impedance measurement circuits (e.g., pH sensors, thermocouples). |
| Switching Speed | tON = 75ns, tOFF = 50ns (RL = 1kΩ, CL = 35pF) - supports multiplexing of audio and medium-speed data signals up to ~2MHz bandwidth. |
| Charge Injection | 10pC max - limits voltage glitch on high-impedance nodes (e.g., sample-and-hold capacitors), reducing settling time overhead. |
| Logic Compatibility | 0.8V/2.4V thresholds at +5V - guarantees reliable control from standard microcontroller GPIOs without external buffers. |
| Analog Signal Range | Rail-to-rail (GND to V+) - allows full utilization of ADC input range and DAC output swing in unipolar systems. |
Pinout & Package
SOT23-5 package (5-pin, 1.6mm × 2.9mm, 0.95mm height), moisture sensitivity level 1, RoHS-compliant, tape-and-reel packaging (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply rail | Powers analog switch core and internal logic; sets upper analog signal limit and logic high threshold. |
| 2 - GND | Ground reference | Reference for analog signals and logic low; forms return path for ESD clamp diodes and supply current. |
| 3 - IN | Digital control input | Active-high logic input; drives internal level shifter to close (connect) COM–NC path when HIGH. |
| 4 - NC | No internal connection | Unbonded pin; must be left floating or grounded per layout best practice - no electrical function. |
| 5 - COM | Analog common terminal | Bidirectional analog node connected to NC when IN = HIGH; serves as input or output depending on system topology. |
Key Features
| Feature | Design Value |
|---|---|
| Normally closed (NC) configuration | Ensures default signal continuity during power-up or MCU reset - critical for fail-safe audio mute or sensor bias paths. |
| Low on-resistance variation vs. signal voltage | RON remains stable across 0V to V+ range - avoids harmonic distortion and amplitude nonlinearity in AC-coupled audio routing. |
| Guaranteed low off-leakage at temperature extremes | 10nA max at +85°C - maintains channel isolation in industrial-grade data loggers and automotive body-control modules. |
| TTL/CMOS logic compatibility at +5V | Eliminates need for external level translators when interfacing with legacy microcontrollers or FPGA I/O banks. |
| Low charge injection (10pC) | Minimizes voltage step on sampling capacitors - reduces acquisition time and improves effective resolution in SAR ADC front-ends. |
Applications
| Audio Signal Routing | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Selecting between microphone inputs or routing line-level audio in portable media players and VoIP handsets. IC Role / Device Role / Timing Role: NC SPST analog switch providing default-connected audio path; breaks connection only on active control for mute or source selection. Use Value: Eliminates pop/click artifacts during power-on and enables silent mute transitions due to guaranteed NC state and low charge injection. |
Use Scenario: Multiplexing thermistor, RTD, or bridge sensor outputs into a single ADC channel in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog switch isolating high-impedance sensor nodes from ADC input during channel scanning. Use Value: 1nA off-leakage at +25°C prevents measurement drift; rail-to-rail operation preserves full dynamic range of ±2.5V sensor outputs. |
| PCMCIA Interface Switching | Cellular Phone Baseband Routing |
|
Use Scenario: Enabling/disabling analog signal paths (e.g., audio codec, modem interface) in PCMCIA cards based on card insertion detection. IC Role / Device Role / Timing Role: Low-voltage SPST switch controlled by host-side GPIO to isolate unused peripherals and reduce standby current. Use Value: +2V minimum supply allows operation directly from PCMCIA VCC (3.3V or 5V); SOT23-5 footprint saves board space in compact card designs. |
Use Scenario: Routing antenna diversity signals or switching between primary/secondary microphone paths in GSM/WCDMA handsets. IC Role / Device Role / Timing Role: High-isolation analog switch managing RF-adjacent baseband signal chains under tight EMI constraints. Use Value: -100dB off-isolation at 100kHz minimizes crosstalk between voice and auxiliary audio paths; fast 50ns turn-off avoids transient coupling during mode switching. |
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 typical at 3.3V), but higher off-leakage (25nA at +85°C); dual-channel, same SOT23-6 package. | Requires PCB redesign (6-pin vs. 5-pin); better for low-RON demand but less suitable for ultra-low-leakage sensor muxing. | Select when RON < 1Ω is mandatory and dual-channel functionality adds value; verify layout compatibility. |
| ADG801BRMZ | Higher supply range (+1.8V to +5.5V), lower charge injection (3pC), but NC version not available - ADG802 is NO-only. | Not a functional drop-in: ADG801 is NO; ADG802 matches NC function but lacks guaranteed 1nA leakage spec at +25°C. | Prefer for sub-2V systems or ultra-low-charge applications; use ADG802 only if 1nA leakage is not required and timing specs align. |
Compared with TS5A23157DCUR and ADG802BRMZ, the MAX4502CUK-T uniquely combines NC default state, 1nA off-leakage guarantee at +25°C, and +2V–+12V operation - making it optimal for battery-powered systems requiring fail-safe continuity and wide-supply flexibility without sacrificing leakage performance.
Availability
MAX4502CUK-T is available at Aetrix Electronics and suitable for battery-operated equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across industrial temperature grades.
Supply support for MAX4502CUK-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, medical, communications, and consumer applications.
The MAX4501/MAX4502 family was developed specifically for low-voltage, low-leakage, rail-to-rail analog switching in portable and space-constrained systems - emphasizing reliability across temperature, minimal signal corruption, and seamless logic interfacing.
FAQ
What is the default switch state of the MAX4502CUK-T?
The MAX4502CUK-T is a normally closed (NC) analog switch: when the IN pin is logic LOW (≤0.8V), the COM and NC terminals are electrically connected. When IN is HIGH (≥2.4V at +5V supply), the switch opens. This default-closed behavior ensures signal continuity during power-up or controller initialization - a key safety feature in audio mute and sensor bias applications. The MAX4502CUK-T maintains this NC function across its full operating temperature range (0°C to +70°C).
Does the MAX4502CUK-T support rail-to-rail analog signals?
Yes, the MAX4502CUK-T supports rail-to-rail analog signal operation - meaning analog voltages from GND to V+ can pass through the COM–NC path without clipping or distortion. This capability is confirmed in the datasheet's "Analog Signal Range" specification (0V to V+), and is enabled by its CMOS transmission-gate architecture with properly biased internal devices. For a +5V supply, signals from 0V to +5V are fully preserved, making the MAX4502CUK-T suitable for interfacing with unipolar ADCs, DACs, and sensor outputs.
What is the maximum allowable supply voltage for the MAX4502CUK-T?
The absolute maximum supply voltage for the MAX4502CUK-T is +13V, but the recommended operational range is +2V to +12V. Operating at +12V is fully characterized: on-resistance drops to 200Ω (typical), off-leakage remains ≤50nA at +85°C, and logic thresholds shift to ~5.0V (VINH) while retaining CMOS compatibility. Exceeding +13V risks permanent damage due to internal ESD diode breakdown. The MAX4502CUK-T's wide supply range enables direct use in 9V battery-powered gear and 12V industrial modules without regulation.
Can the MAX4502CUK-T be used with a 3.3V microcontroller GPIO?
Yes - the MAX4502CUK-T accepts TTL/CMOS-compatible logic inputs, and at +5V supply, its VINL and VINH thresholds are 0.8V and 2.4V respectively. A 3.3V GPIO (with VOH ≥ 2.4V and VOL ≤ 0.4V) meets these requirements. However, if V+ = 3.3V, the logic thresholds scale downward (~0.6V/1.8V), and a 3.3V GPIO may overdrive the IN pin. For robust 3.3V-system use, operate the MAX4502CUK-T at +5V supply and drive IN from the 3.3V GPIO - which is safe and fully supported per the datasheet's +5V logic interface specifications.
Is the SOT23-5 package of the MAX4502CUK-T pin-compatible with other Maxim analog switches?
The MAX4502CUK-T uses a proprietary SOT23-5 pinout (V+, GND, IN, NC, COM) that differs from industry-standard 5-pin analog switch layouts (e.g., ON Semiconductor's NLAS series). Pin 4 is NC (not used), and COM is on pin 5 - unlike many competitors where COM occupies pin 2 or 3. Therefore, the MAX4502CUK-T is not pin-compatible with generic SOT23-5 analog switches. PCB layout must follow Maxim's documented pin map; substituting without verification will result in incorrect switching behavior or open-circuit conditions.
MAX4502CUK-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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4502CUK-T FAQ
1.How can I place an order for MAX4502CUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4502CUK-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 MAX4502CUK-T reliable?
The price and inventory of MAX4502CUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4502CUK-T is usually 5 days.
3.What payment methods are accepted for MAX4502CUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4502CUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4502CUK-T?
MAX4502CUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4502CUK-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 MAX4502CUK-T?
For technical support, including MAX4502CUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4502CUK-T requirements.
6.How does Aetrix verify that MAX4502CUK-T is sourced from the original manufacturer or authorized distributors?
All MAX4502CUK-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 MAX4502CUK-T meets industry standards.
7.What is the process for return or replacement of MAX4502CUK-T?
All MAX4502CUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4502CUK-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 MAX4502CUK-T part is unused and in its original packaging.
Return procedure for MAX4502CUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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