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Analog Devices Inc./Maxim Integrated MAX323EUA
- Part No.:
- MAX323EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX323EUA.pdf
- Description:
- IC SWITCH SPST-NOX2 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:389
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Product details
Overview
The MAX323EUA from Maxim Integrated is a precision dual normally-open (NO) single-pole single-throw (SPST) analog switch IC, designed for signal routing in low-power, single-supply systems. It operates from +2.7V to +16V, delivers ≤60Ω on-resistance, ≤2Ω channel-to-channel RON matching, and ≤5pC charge injection - enabling high-fidelity switching in battery-powered instrumentation and data acquisition front-ends.
For engineers reviewing the MAX323EUA datasheet, MAX323EUA pinout, MAX323EUA application, or MAX323EUA equivalent, this device is selected for precision analog multiplexing where low leakage (<100pA), fast switching (tON ≤150ns), rail-to-rail signal handling, and guaranteed break-before-make timing are critical in compact µMAX-packaged designs.
Technical Context
The MAX323EUA implements two independent CMOS SPST switches with TTL/CMOS-compatible control inputs and bidirectional analog signal paths. Its internal architecture ensures matched on-resistance across channels and minimal flatness variation (<6Ω) over the full 0V to V+ analog range, supporting accurate gain-setting and signal integrity in precision measurement paths.
It features integrated ESD protection (>2000V per Method 3015.7), operates without dual supplies, and maintains low leakage (<2.5nA at +85°C) and ultra-low quiescent power (<5µW), making it suitable for always-on sensor interfaces and portable medical devices requiring long-term stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V - enables direct interface with 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | ≤60Ω max at +5V - ensures minimal signal attenuation and gain error in precision amplifier and ADC/DAC signal paths. |
| RON Matching | ≤2Ω max between channels - critical for differential signal routing and matched filter applications. |
| Charge Injection | ≤5pC - reduces sampling glitches in sample-and-hold and switched-capacitor circuits. |
| Leakage Current | ≤100pA max at +25°C - preserves accuracy in high-impedance sensor and pH probe interfaces. |
| Switching Speed | tON ≤150ns, tOFF ≤100ns - supports multiplexing of audio and medium-speed data signals up to ~2MHz. |
| ESD Rating | >2000V per Method 3015.7 - provides robust handling during PCB assembly and field operation. |
Pinout & Package
MAX323EUA is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), pin-compatible with industry-standard SOIC-8 and PDIP-8 footprints but optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | NO1, NO2 | Normally-open analog switch terminals - connect to signal sources when logic input is high; isolated otherwise. |
| 2, 6 | COM1, COM2 | Common analog I/O nodes - bidirectional; serve as inputs or outputs depending on signal flow direction. |
| 3, 7 | IN1, IN2 | TTL/CMOS-compatible digital control inputs - drive high (≥2.4V) to close respective NO switch. |
| 4 | GND | Analog/digital ground reference - must be low-impedance and shared with signal return paths. |
| 8 | V+ | Positive supply rail - powers internal switch array and logic; accepts 2.7V–16V with no negative rail required. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Eliminates need for dual ±5V rails - simplifies power design and reduces BOM count in portable equipment. |
| Low RON flatness | <6Ω variation over full 0V–V+ analog range - maintains consistent gain and linearity across signal amplitude. |
| Guaranteed break-before-make | Not applicable to MAX323EUA (NO-only); only MAX325 offers this - avoids momentary short-circuits in crosspoint routing. |
| TTL/CMOS logic compatibility | Valid at +5V supply - allows direct interfacing with microcontrollers and FPGAs without external level shifters. |
| Ultra-low power consumption | <5µW typical - extends battery life in always-on monitoring systems such as wearable health sensors. |
Applications
| Battery-Powered Data Loggers | Medical Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Multiplexing thermistor, RTD, and ECG electrode signals into a single ADC channel in a handheld diagnostic device. IC Role / Device Role / Timing Role: Dual SPST analog switch routing low-level biopotential and temperature signals while preserving DC accuracy and minimizing offset drift. Use Value: ≤100pA leakage and ≤2Ω RON matching prevent measurement crosstalk and gain error across channels. |
Use Scenario: Isolating patient-connected electrodes during calibration cycles in a portable vital signs monitor. IC Role / Device Role / Timing Role: Precision analog gate controlling signal path integrity and ensuring safe, low-leakage disconnection from sensitive front-end amplifiers. Use Value: >2000V ESD rating and <5pC charge injection reduce risk of patient interface disturbance and sampling artifacts. |
| Industrial Process Control I/O Modules | Test & Measurement Multiplexers |
|
Use Scenario: Routing 4–20mA loop signals and thermocouple inputs through a modular PLC analog input card. IC Role / Device Role / Timing Role: High-voltage-tolerant analog switch enabling flexible signal configuration without relay wear-out or thermal EMF errors. Use Value: +16V absolute max rating and ≤60Ω RON support direct connection to industrial transmitters and minimize insertion loss. |
Use Scenario: Building automated test fixtures that sequentially route DUT outputs to spectrum analyzers and oscilloscopes. IC Role / Device Role / Timing Role: Fast, low-distortion signal selector ensuring repeatable measurements across multiple instrument channels. Use Value: 150ns tON/100ns tOFF and <6Ω RON flatness maintain signal fidelity for kHz-range test signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX323ESA | Same electrical specs; SOIC-8 package (5mm × 4mm), higher thermal resistance, no exposed pad. | Better suited for prototyping and manual soldering; less optimal for high-density or thermally constrained layouts. | Select MAX323ESA for breadboarding or legacy SOIC footprint compatibility; choose MAX323EUA for miniaturized production designs. |
| ADG1419BRMZ | Higher RON (1.3Ω typ), wider supply (±15V or +12V single), lower leakage (1pA), but larger LFCSP-10 package. | Targeted at high-precision lab equipment requiring ultra-low leakage and bipolar operation - not drop-in compatible. | Choose ADG1419BRMZ only when sub-picoampere leakage or dual-supply operation is mandatory; MAX323EUA remains optimal for cost-sensitive, single-supply portable use. |
Compared with MAX323ESA and ADG1419BRMZ, the MAX323EUA uniquely balances ultra-small µMAX footprint, single-supply simplicity, and precision analog performance - making it the preferred choice for space- and power-constrained embedded systems where SOIC is too large and LFCSP requires redesign.
Availability
MAX323EUA is available at Aetrix Electronics and suitable for battery-operated instrumentation, medical sensor interfaces, and industrial I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX323EUA 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.
The MAX323EUA belongs to Maxim's precision analog switch product line, engineered specifically for low-leakage, low-distortion signal routing in portable and mission-critical measurement systems operating from a single supply.
FAQ
What is the maximum analog signal voltage range supported by the MAX323EUA?
The MAX323EUA supports analog signals from 0V to V+, where V+ ranges from +2.7V to +16V. At +5V supply, the full 0V to +5V range is routable with minimal RON variation (<6Ω). This rail-to-rail capability eliminates the need for external level-shifting circuitry in most single-supply applications involving the MAX323EUA.
Does the MAX323EUA require a negative supply or ground reference beyond GND?
No. The MAX323EUA is a single-supply device requiring only V+ and GND connections. It does not need a negative rail or split supply. All analog and logic signals are referenced to GND, and internal protection diodes clamp inputs to safe levels relative to V+ and GND - a key design advantage of the MAX323EUA in portable systems.
Is the MAX323EUA pin-compatible with other packages in the MAX323 family?
Yes - the MAX323EUA shares identical pinout with MAX323CPA (PDIP-8), MAX323CSA (SOIC-8), and MAX323ESA (SOIC-8). All variants use the same 8-pin configuration: V+, IN1, COM2, NO2, GND, IN2, COM1, NO1. This allows direct PCB footprint reuse across package types when migrating from prototype (SOIC) to volume production (µMAX) using the MAX323EUA.
What is the guaranteed charge injection specification for the MAX323EUA, and why does it matter?
The MAX323EUA guarantees ≤5pC maximum charge injection. This parameter quantifies the transient voltage glitch injected onto the COM node during switching - critical in sample-and-hold circuits and switched-capacitor filters. Low charge injection minimizes settling time and distortion, directly improving measurement accuracy in systems relying on the MAX323EUA for precision analog sampling.
Can the MAX323EUA operate reliably at +85°C ambient temperature?
Yes. The MAX323EUA is rated for operation from –40°C to +85°C (industrial grade), with leakage current specified at <2.5nA and RON performance maintained across this full range. Thermal derating is not required below +85°C, and the µMAX package's low thermal resistance ensures stable operation in enclosed enclosures - a verified capability of the MAX323EUA in deployed industrial hardware.
MAX323EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 60Ohm
- Channel-to-Channel Matching (ΔRon):
- 800mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 16V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 9pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX323EUA FAQ
1.How can I place an order for MAX323EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX323EUA 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 MAX323EUA reliable?
The price and inventory of MAX323EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX323EUA is usually 5 days.
3.What payment methods are accepted for MAX323EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX323EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX323EUA?
MAX323EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX323EUA 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 MAX323EUA?
For technical support, including MAX323EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX323EUA requirements.
6.How does Aetrix verify that MAX323EUA is sourced from the original manufacturer or authorized distributors?
All MAX323EUA 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 MAX323EUA meets industry standards.
7.What is the process for return or replacement of MAX323EUA?
All MAX323EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX323EUA, 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 MAX323EUA part is unused and in its original packaging.
Return procedure for MAX323EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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