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Analog Devices Inc./Maxim Integrated MAX4503EPA
- Part No.:
- MAX4503EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4503EPA.pdf
- Description:
- IC SWITCH SPST-NOX1 250OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
MAX4503EPA from Maxim Integrated is a low-voltage, dual-supply, normally-open (NO) SPST CMOS analog switch rated for -40°C to +85°C operation in an 8-pin plastic DIP package. It supports rail-to-rail analog signal switching across ±1V to ±6V dual supplies, delivers 250Ω max on-resistance at ±5V, and exhibits only 1nA max COM off-leakage at +25°C - enabling precision signal routing in battery-powered instrumentation.
For engineers reviewing the MAX4503EPA datasheet, MAX4503EPA pinout, MAX4503EPA application, or MAX4503EPA equivalent, key selection criteria include guaranteed on-resistance flatness over temperature, ultra-low leakage performance at extended temperature range, CMOS-logic compatibility without ground reference, and verified SPST NO functionality in DIP packaging for prototyping and industrial control interfaces.
Technical Context
The MAX4503EPA implements a fully differential CMOS transmission gate architecture with separate V+ and V− supply pins - no ground connection required - enabling true bipolar analog signal handling from ±1V to ±6V. Its logic input uses an internal voltage-referenced comparator tied to V+, allowing CMOS-compatible switching even with asymmetric or floating logic sources.
Each switch channel features matched ESD diodes to both supplies on COM, NO, and IN pins, with leakage currents strictly characterized at −40°C, +25°C, and +85°C. Charge injection is limited to 10pC max, and dynamic performance includes tON = 150ns and tOFF = 100ns at ±5V, supporting audio-frequency multiplexing and data-acquisition sample gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±1V to ±6V dual supply - enables rail-to-rail analog signal switching without level-shifting circuitry |
| On-Resistance (RON) | 250Ω max at ±5V, +25°C - ensures minimal signal attenuation and gain error in precision sensor paths |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C - preserves accuracy in high-impedance measurement nodes |
| Charge Injection | 10pC max - limits voltage glitch on sampled-hold capacitors in ADC front-ends |
| Switching Speed | tON = 150ns, tOFF = 100ns at ±5V - supports audio-band and low-speed data acquisition timing |
| Logic Compatibility | CMOS-input with V+ referenced threshold - eliminates need for external level translators or ground reference |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood auxiliary circuits |
Pinout & Package
MAX4503EPA is housed in an 8-pin plastic DIP (dual in-line package) with 0.300" body width and through-hole mounting. Pin 1 is marked with a notch or dot; pin numbering follows standard DIP convention (counterclockwise from top-left).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM (Common Terminal) | Analog signal path common node - bidirectional, connects to NO when enabled |
| 2, 3, 5 | N.C. (Not Internally Connected) | No internal bond wire - must be left unconnected; no routing or grounding required |
| 4 | IN (Digital Control Input) | CMOS-compatible logic input - HIGH enables switch (COM→NO), LOW disables |
| 6 | V− (Negative Supply) | Analog and logic negative rail - sets lower bound of switchable signal range |
| 7 | NO (Normally Open Terminal) | Analog output when enabled - open-circuit when disabled; interchangeable with COM |
| 8 | V+ (Positive Supply) | Analog and logic positive rail - sets upper bound of switchable signal range; powers internal logic translator |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply rail-to-rail operation | Supports analog signals spanning V− to V+ without clipping - critical for ±5V op-amp interfaces and bipolar sensor outputs |
| Guaranteed 250Ω RON | Ensures predictable channel gain and minimal THD in audio routing and DAC output switching |
| 1nA max off-leakage at +25°C | Maintains DC accuracy in >10MΩ impedance nodes - e.g., electrometer-grade pH or strain gauge front-ends |
| 10pC max charge injection | Reduces settling error in sample-and-hold circuits using ≤100pF hold capacitors |
| CMOS-input with no ground pin | Enables direct interface to isolated microcontroller GPIOs or floating logic domains without reference bias networks |
Applications
| Battery-Powered Instrumentation | Audio Signal Routing |
|---|---|
|
Use Scenario: Low-power handheld multimeter selecting between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: SPST analog switch isolating high-impedance input stages during range changes to prevent loading errors. Use Value: 1nA off-leakage preserves nanoamp-level current measurement integrity; ±1V min supply enables operation from single Li-ion cell with boost converter. |
Use Scenario: Stereo line-level mux in portable media player selecting between headphone, speaker, and line-out outputs. IC Role / Device Role / Timing Role: Bidirectional analog switch routing unbalanced audio signals with minimal crosstalk and distortion. Use Value: 250Ω RON and <10pC charge injection prevent audible clicks and preserve frequency response up to 20kHz. |
| Industrial Data Acquisition | Communications Interface Protection |
|
Use Scenario: Multiplexing thermocouple, RTD, and voltage inputs into a shared 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Precision analog switch providing channel isolation and guarding against leakage-induced offset drift. Use Value: Guaranteed 10nA off-leakage at +85°C ensures <1µV error in 100kΩ sensor bridges under thermal stress. |
Use Scenario: Isolating RS-232 transceiver I/O lines during hot-plug events or fault conditions in industrial modems. IC Role / Device Role / Timing Role: Fail-safe SPST switch disconnecting sensitive UART pins from transient-exposed connectors. Use Value: Dual-supply operation allows V+ and V− to track RS-232 voltage rails (±3V to ±15V), enabling robust ±12V signal blocking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4503ESA | Same electrical specs, but in 8-pin SOIC package - 5.3mm × 4.4mm surface-mount footprint vs. DIP's 9.27mm × 6.35mm through-hole | Preferred for automated PCB assembly and space-constrained designs; not suitable for breadboard or socket-based prototyping | Select MAX4503ESA when board area and reflow compatibility outweigh manual testability needs. |
| ADG1419BRZ | Single-channel SPST, ±15V max supply, 0.6Ω typical RON, but requires ground-referenced logic and has higher 20nA off-leakage at +85°C | Better for high-voltage industrial PLC I/O modules; less suitable for ultra-low-leakage battery systems due to leakage and logic interface constraints | Choose ADG1419BRZ only when ±15V signal handling is mandatory and leakage <10nA is not required at temperature extremes. |
Compared with MAX4503ESA, the MAX4503EPA offers superior mechanical stability and hand-soldering accessibility in lab environments, while ADG1419BRZ trades leakage and logic flexibility for higher voltage tolerance - making MAX4503EPA the optimal choice for temperature-extended, low-leakage, ground-free analog switching.
Availability
MAX4503EPA is available at Aetrix Electronics and suitable for battery-operated instrumentation, industrial data-acquisition systems, and communications interface protection requiring stable component supply across extended temperature ranges.
Supply support for MAX4503EPA 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 MAX4503EPA belongs to Maxim's precision analog switch product line, engineered specifically for low-leakage, rail-to-rail, dual-supply signal routing in thermally demanding and ground-isolated systems.
FAQ
What is the maximum allowable supply voltage for MAX4503EPA?
The MAX4503EPA supports dual-supply operation from ±1V to ±6V. Absolute maximum ratings specify V+ up to +13V relative to V−, but functional operation is guaranteed only within ±1V to ±6V. Exceeding ±6V risks violating the specified on-resistance, leakage, and switching time parameters - always refer to the Electrical Characteristics tables for ±5V and ±3V test conditions when designing with MAX4503EPA.
Does MAX4503EPA require a ground connection for proper operation?
No, the MAX4503EPA has no ground pin and operates with only V+ and V− supply connections. Its digital input uses an internal comparator referenced to V+, enabling CMOS-logic compatibility without a ground reference - a key feature for isolated or floating systems. This architecture eliminates ground-loop concerns in multi-supply measurement setups using MAX4503EPA.
How does the leakage current of MAX4503EPA change over temperature?
MAX4503EPA guarantees COM off-leakage current of 1nA maximum at +25°C and 10nA maximum at +85°C. The datasheet confirms this is 100% tested at maximum rated hot operating temperature and correlated at +25°C. This controlled leakage drift ensures predictable performance in industrial environments where MAX4503EPA operates continuously from −40°C to +85°C.
Can MAX4503EPA be used with single-supply systems?
The MAX4503EPA is designed for dual-supply operation and is not recommended for true single-supply use. For single-supply applications, Maxim specifies the pin-for-pin compatible MAX4501/MAX4502 series. Attempting to bias MAX4503EPA with V− = 0V violates its dual-supply architecture and degrades leakage, on-resistance, and logic threshold behavior - always select MAX4501EPA or MAX4502EPA instead for 0V–VCC systems.
What is the function of pins 2, 3, and 5 on the MAX4503EPA DIP package?
Pins 2, 3, and 5 of the MAX4503EPA are labeled N.C. (Not Internally Connected) - they have no internal bond wires or circuit connections. These pins must remain unconnected on the PCB; neither grounding nor routing is permitted. This design simplifies layout and avoids unintended parasitic coupling, a confirmed characteristic of the MAX4503EPA silicon die structure per the official pin description table.
MAX4503EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 250Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±1V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -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
MAX4503EPA FAQ
1.How can I place an order for MAX4503EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4503EPA 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 MAX4503EPA reliable?
The price and inventory of MAX4503EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4503EPA is usually 5 days.
3.What payment methods are accepted for MAX4503EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4503EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4503EPA?
MAX4503EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4503EPA 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 MAX4503EPA?
For technical support, including MAX4503EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4503EPA requirements.
6.How does Aetrix verify that MAX4503EPA is sourced from the original manufacturer or authorized distributors?
All MAX4503EPA 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 MAX4503EPA meets industry standards.
7.What is the process for return or replacement of MAX4503EPA?
All MAX4503EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4503EPA, 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 MAX4503EPA part is unused and in its original packaging.
Return procedure for MAX4503EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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