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Analog Devices Inc./Maxim Integrated MAX4502EPA
- Part No.:
- MAX4502EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4502EPA.pdf
- Description:
- IC SWITCH SPST-NCX1 250OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,303
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Product details
Overview
The MAX4502EPA 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, delivering 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 MAX4502EPA datasheet, MAX4502EPA pinout, MAX4502EPA application, or MAX4502EPA equivalent, key selection criteria include guaranteed NC state, -40°C to +85°C temperature range, 8-pin plastic DIP package, TTL/CMOS logic compatibility at +5V, and sub-100ns switching performance with minimal charge injection.
Technical Context
The MAX4502EPA implements a CMOS transmission-gate architecture with internal logic-level translation, enabling direct interface to +5V TTL/CMOS inputs while supporting analog signals from GND to V+. Its NC configuration means the COM–NC path remains conductive when IN is low, and opens only upon high logic input.
ESD protection diodes are integrated between each analog terminal (COM, NC, NO) and both V+ and GND, defining absolute maximum ratings and leakage behavior. Leakage currents are dominated by reverse-biased diode mismatch, not channel conduction, and vary predictably with temperature and signal voltage-verified per test conditions in Figures 3–4 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Supply Range | +2V to +12V single supply-supports battery-powered systems down to two alkaline cells or Li-ion partial discharge. |
| On-Resistance (RON) | 250Ω max at +5V, TA = +25°C-ensures <0.25% gain error in 100kΩ sensor interfaces. |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C-preserves accuracy in high-impedance sample-and-hold or pH sensor nodes. |
| Switching Speed | tON = 75ns, tOFF = 50ns-enables multiplexing up to ~5MHz without significant settling delay. |
| Charge Injection | 10pC max-limits voltage glitch to <10mV on 1nF hold capacitors, critical for precision ADC front-ends. |
| Logic Thresholds | VINL = 0.8V, VINH = 2.4V at +5V supply-guarantees reliable switching with standard 5V TTL and CMOS outputs. |
| Operating Temperature | -40°C to +85°C-qualified for industrial and extended-temperature portable equipment. |
Pinout & Package
MAX4502EPA uses an 8-pin plastic DIP package (0.300" wide), with pin 1 = V+, pin 2 = GND, pin 3 = IN, pin 4 = NC (no internal connection), pin 5 = NC (no internal connection), pin 6 = COM, pin 7 = NC (no internal connection), pin 8 = NC (no internal connection). Per datasheet Figure 1 and Pin Description table, only pins 1 (V+), 2 (GND), 3 (IN), 6 (COM), and 8 (NC) are functional; pins 4, 5, and 7 are unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive supply rail | Powers analog switch core and digital control logic; sets rail-to-rail analog voltage limits. |
| 2 (GND) | Ground reference | Return path for supply current and logic thresholds; defines 0V reference for all analog signals. |
| 3 (IN) | Digital control input | Active-high logic input: low = NC path closed, high = NC path open (SPST-NC function). |
| 6 (COM) | Analog common terminal | Shared node connecting to NC (and optionally NO); bidirectional signal path with no polarity restriction. |
| 8 (NC) | No internal connection | Unused pin-must be left floating or tied to GND/V+ per layout best practice; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Normally closed (NC) topology | Ensures fail-safe signal continuity during power loss or control failure-critical in safety-critical sensor monitoring paths. |
| Rail-to-rail analog operation | Supports full-swing signals from GND to V+ without clipping, enabling direct interface to op-amp outputs and ADC inputs. |
| Low 10pC charge injection | Minimizes voltage disturbance on sampling capacitors, preserving DC accuracy in precision data acquisition systems. |
| TTL/CMOS-compatible logic | Eliminates need for level-shifting circuitry when driven by standard 5V microcontrollers or FPGAs. |
| Guaranteed -40°C to +85°C operation | Validated across full industrial temperature range-not just rated-enabling deployment in outdoor or automotive-adjacent environments. |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Signal path selection in portable guitar effects pedals powered by 9V batteries, where power efficiency and signal integrity are critical. IC Role / Device Role / Timing Role: SPST-NC analog switch isolating unused op-amp stages to reduce quiescent current and prevent crosstalk. Use Value: 1nA off-leakage preserves battery life over months; rail-to-rail support maintains full dynamic range of 2Vpp audio signals. |
Use Scenario: Multiplexing thermistor, RTD, and pH electrode inputs into a single 24-bit sigma-delta ADC in handheld environmental meters. IC Role / Device Role / Timing Role: Precision analog switch front-end with low RON and minimal charge injection to avoid measurement offset drift. Use Value: 250Ω RON contributes <0.0025% gain error in 10MΩ sensor bridges; 10pC charge injection limits step error to <1 LSB at 24-bit resolution. |
| PCMCIA Card Interface Switching | Cellular Phone Baseband Signal Path |
Use Scenario: Enabling/disabling legacy PCMCIA card I/O lines during hot insertion to prevent bus contention and ESD damage. IC Role / Device Role / Timing Role: Fail-safe NC switch placed in series with card-side data lines-open only when host controller asserts valid enable. Use Value: NC default prevents floating bus states during initialization; 50ns tOFF ensures clean break-before-make timing in 10MHz I/O protocols. |
Use Scenario: Routing microphone bias voltage and receive audio paths in dual-SIM GSM/WCDMA handsets with tight PCB space constraints. IC Role / Device Role / Timing Role: Low-leakage SPST switch managing mic bias delivery to primary/secondary mic elements based on call context. Use Value: 10nA max off-leakage at +85°C avoids >1mV bias droop across 100kΩ mic bias resistors-preventing SNR degradation in noisy RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1412BRZ | ±15V dual-supply operation; 1.3Ω RON; requires split rails; no NC default state. | Designed for precision instrumentation with bipolar signals-not suitable for single-supply battery systems. | Select only if ±15V rails exist and ultra-low RON outweighs NC requirement. |
| TS5A23157DRCR | +1.65V to +5.5V supply; 0.9Ω RON; NC variant available (TS5A23157YFPR); 1.5pC charge injection. | Optimized for 3.3V/5V mobile I/O; smaller SC70-6 package; lower voltage ceiling than MAX4502EPA. | Prefer for new 3.3V designs needing lower RON and smaller footprint-but not for +12V or -40°C to +85°C industrial use. |
Compared with ADG1412BRZ and TS5A23157DRCR, the MAX4502EPA uniquely combines NC default behavior, +2V to +12V single-supply flexibility, and guaranteed industrial temperature operation-making it irreplaceable in fail-safe, wide-voltage, battery-backed analog routing.
Availability
MAX4502EPA is available at Aetrix Electronics and suitable for battery-operated equipment, low-voltage data-acquisition systems, and cellular phone baseband signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4502EPA 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 product line delivers robust, low-leakage, single-supply CMOS analog switches optimized for portable and space-constrained systems demanding rail-to-rail signal handling and fail-safe NC or NO configurations.
FAQ
What is the default switch state of the MAX4502EPA?
The MAX4502EPA is a normally closed (NC) analog switch: when the IN pin is logic low (≤0.8V), the COM–NC path is conductive; applying a logic high (≥2.4V) to IN opens the path. This NC behavior is intrinsic to the MAX4502EPA silicon design and does not require external pull-up or pull-down components.
Can the MAX4502EPA operate from a 3.3V supply?
Yes, the MAX4502EPA supports +2V to +12V single-supply operation, including +3.3V. At +3.3V, typical on-resistance rises to ~600Ω (per datasheet Figure 2), and logic thresholds remain compatible-VINL ≤0.8V and VINH ≥2.4V ensure reliable switching with standard 3.3V CMOS outputs driving the IN pin.
Is the MAX4502EPA pin-compatible with the MAX4501EPA?
No-the MAX4502EPA and MAX4501EPA share identical pinouts in the 8-pin DIP package (V+, GND, IN, COM, NC), but their functional behavior differs fundamentally: MAX4502EPA is NC, while MAX4501EPA is NO. Swapping them without logic inversion will invert system behavior and may cause malfunction in fail-safe circuits.
What is the maximum analog signal voltage the MAX4502EPA can handle?
The MAX4502EPA supports rail-to-rail analog signals from GND to V+. With V+ = +12V, the device passes signals from 0V to +12V without clipping or distortion. Exceeding V+ or dropping below GND on COM, NC, or NO pins risks forward-biasing internal ESD diodes and violating absolute maximum ratings-so signal swing must stay within [GND, V+].
Does the MAX4502EPA require external decoupling capacitors?
Yes-place a 0.1µF ceramic capacitor between V+ and GND, as close as possible to the MAX4502EPA pins. This stabilizes the internal logic and analog supply rails during fast switching transitions, reducing supply-induced noise coupling and ensuring consistent tON/tOFF performance per datasheet Figure 1 test conditions.
MAX4502EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX4502EPA FAQ
1.How can I place an order for MAX4502EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4502EPA 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 MAX4502EPA reliable?
The price and inventory of MAX4502EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4502EPA is usually 5 days.
3.What payment methods are accepted for MAX4502EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4502EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4502EPA?
MAX4502EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4502EPA 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 MAX4502EPA?
For technical support, including MAX4502EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4502EPA requirements.
6.How does Aetrix verify that MAX4502EPA is sourced from the original manufacturer or authorized distributors?
All MAX4502EPA 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 MAX4502EPA meets industry standards.
7.What is the process for return or replacement of MAX4502EPA?
All MAX4502EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4502EPA, 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 MAX4502EPA part is unused and in its original packaging.
Return procedure for MAX4502EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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