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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:4,440
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Product details
Overview
MAX323EUA+ from Analog Devices is a precision dual normally open (NO) SPST analog switch IC operating from +2.7V to +16V single supply. It delivers 60Ω max on-resistance, <2Ω channel matching, <6Ω RON flatness, 150ns max tON, and 100pA max leakage - enabling high-fidelity signal routing in battery-powered audio/video systems and precision data acquisition.
For engineers reviewing the MAX323EUA+ datasheet, MAX323EUA+ pinout, MAX323EUA+ application, or MAX323EUA+ equivalent, key selection criteria include guaranteed single-supply operation down to +2.7V, sub-5μW quiescent power, 5pC max charge injection for low glitch in sample-and-hold circuits, and ESD robustness exceeding 2000V per Method 3015.7.
Technical Context
The MAX323EUA+ implements two independent, bidirectional, TTL/CMOS-compatible SPST switches with normally open configuration. Its internal architecture ensures break-before-make is not required (unlike MAX325), and all analog terminals (NO, COM) support rail-to-rail signal switching from GND to V+ with minimal RON variation across voltage and temperature.
Designed for single-supply systems, it eliminates need for dual ±5V rails while maintaining precision performance: RON flatness remains ≤6Ω over full analog range at +25°C, and leakage stays below 2.5nA at +85°C - critical for low-drift sensor front-ends and portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +16V single supply - enables direct integration into 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +25°C, 75Ω max over -40°C to +85°C - ensures minimal signal attenuation and gain error in precision gain-switching paths. |
| RON Matching | <2Ω max between channels at +25°C - supports matched-pair applications like differential signal routing or dual-channel calibration. |
| Charge Injection | 5pC max - limits voltage glitch in sample-and-hold and ADC multiplexing, preserving 12-bit+ accuracy. |
| Leakage Current | 100pA max at +25°C, <2.5nA at +85°C - maintains high-impedance integrity in sensor interfaces and battery-monitoring circuits. |
| Switching Speed | tON ≤150ns, tOFF ≤100ns at +25°C - suitable for multiplexing up to ~3MHz analog signals with minimal settling delay. |
| ESD Rating | >2000V per Method 3015.7 - provides robust handling margin during PCB assembly and field deployment. |
Pinout & Package
MAX323EUA+ is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), RoHS-compliant, with exposed pad for thermal enhancement. Pin 1 = NO1, Pin 2 = COM1, Pin 3 = IN2, Pin 4 = GND, Pin 5 = NO2, Pin 6 = COM2, Pin 7 = IN1, Pin 8 = V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Normally Open analog terminal, Switch 1 | Open-circuit when IN1 = low; connects to COM1 when IN1 = high - defines primary signal path for Channel 1. |
| 2 (COM1) | Common analog terminal, Switch 1 | Bidirectional node shared between NO1 and internal switch - serves as input or output depending on system topology. |
| 3 (IN2) | Logic control input, Switch 2 | TTL/CMOS-compatible digital input controlling NO2–COM2 connection - requires rail-to-rail drive for lowest power. |
| 4 (GND) | Analog/digital ground reference | Common return for supply, logic, and analog signals - must be low-impedance to minimize crosstalk and offset drift. |
| 5 (NO2) | Normally Open analog terminal, Switch 2 | Open-circuit when IN2 = low; connects to COM2 when IN2 = high - independent second signal path. |
| 6 (COM2) | Common analog terminal, Switch 2 | Bidirectional node for Switch 2 - electrically isolated from COM1 to prevent inter-channel coupling. |
| 7 (IN1) | Logic control input, Switch 1 | Directly controls NO1–COM1 state - inverted logic sense relative to MAX324/MAX325 variants. |
| 8 (V+) | Positive supply rail | Single power source for analog and logic sections - substrate tied internally to V+, requiring clean, decoupled supply. |
Key Features
| Feature | Design Value |
|---|---|
| Dual NO SPST topology | Enables independent, non-overlapping signal routing for redundant sensing or dual-path monitoring without cross-conduction risk. |
| 60Ω max RON with <6Ω flatness | Maintains consistent gain and linearity across full 0V–V+ analog range - essential for wide-dynamic-range DAC/ADC interfacing. |
| 5pC max charge injection | Reduces hold-step error in precision sample-and-hold stages, supporting 14-bit effective resolution at 100ksps. |
| 100pA max off-leakage | Preserves signal integrity in high-Z medical sensor nodes and electrochemical measurement front-ends. |
| Single +2.7V to +16V operation | Eliminates need for charge pumps or dual supplies in portable test gear, extending battery life and simplifying BOM. |
Applications
| Battery-Powered Data Loggers | Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing thermocouple, RTD, and pH sensor inputs into a single 16-bit SAR ADC under 3.3V battery power. IC Role / Device Role / Timing Role: Precision analog switch managing high-impedance sensor connections with minimal added noise and offset. Use Value: 100pA leakage and 5pC charge injection prevent baseline drift and sampling artifacts, ensuring ±0.1°C temperature accuracy over 10-year deployment. | Use Scenario: Selecting between microphone preamp outputs and line-level sources in a portable mixer with 5V USB power. IC Role / Device Role / Timing Role: Bidirectional SPST switch routing analog audio paths with flat frequency response and low THD. Use Value: 60Ω RON and <6Ω flatness avoid channel imbalance; 150ns switching enables silent mute transitions without pop/click. |
| Industrial PLC I/O Modules | Medical Patient Monitoring |
Use Scenario: Isolating and conditioning analog current-loop (4–20mA) inputs before digitization in a DIN-rail mounted controller. IC Role / Device Role / Timing Role: Signal path selector enabling calibration shunt insertion and sensor disconnect diagnostics. Use Value: Guaranteed RON matching <2Ω allows precise ratiometric correction; ESD >2000V withstands factory ESD events. | Use Scenario: Routing ECG electrode leads to differential amplifier inputs while rejecting common-mode interference. IC Role / Device Role / Timing Role: Low-leakage, low-charge-injection analog switch in front-end multiplexer for biopotential acquisition. Use Value: Sub-nA leakage prevents DC offset accumulation; rail-to-rail switching preserves small-signal fidelity (<;1mVpp) across full patient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX323CUA+ | Same electrical specs but rated for 0°C to +70°C industrial range vs. -40°C to +85°C of MAX323EUA+. | Suitable for commercial-grade equipment without extended temperature requirements. | Select MAX323CUA+ only if ambient operating temperature stays within 0°C–70°C and cost sensitivity outweighs industrial qualification. |
| ADG1419BRMZ | Single-supply 12V max, 4.7Ω typical RON, but higher 25pC charge injection and no guaranteed 2.7V operation. | Better for low-RON needs where charge injection is less critical than on-resistance. | Choose ADG1419BRMZ when ultra-low on-resistance is prioritized over sub-5pC charge injection and wide-voltage compatibility. |
Compared with MAX323CUA+, MAX323EUA+ adds extended temperature reliability for harsh environments; compared with ADG1419BRMZ, it trades lower RON for superior charge injection control and guaranteed 2.7V startup - making it optimal for portable, precision, wide-supply applications.
Availability
MAX323EUA+ is available at Aetrix Electronics and suitable for battery-operated systems, precision data acquisition, and industrial sensor interface applications requiring stable component supply across extended temperature ranges.
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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX323 series belongs to Analog Devices' precision analog switch product line, engineered specifically for single-supply, low-leakage, low-distortion signal routing in portable and high-reliability instrumentation.
FAQ
What is the maximum supply voltage rating for MAX323EUA+?
The absolute maximum supply voltage for MAX323EUA+ is +17V, though recommended operating range is +2.7V to +16V. Exceeding +17V risks permanent damage per Absolute Maximum Ratings. At +16V, RON remains within spec (≤75Ω), and leakage stays below 5nA at +85°C - confirmed in Electrical Characteristics tables for V+ = 12V and 15V test conditions.
Does MAX323EUA+ support rail-to-rail analog signal switching?
Yes, MAX323EUA+ supports analog signals from GND to V+ with minimal RON variation. Typical RON flatness is 2Ω at +25°C and ≤6Ω max across the full 0V–V+ range, verified in Figure MAX323-01 and Electrical Characteristics notes. This enables accurate switching of sensor outputs, DAC voltages, and audio waveforms without clipping or distortion.
Is MAX323EUA+ pin-compatible with other MAX323 variants like MAX323ESA?
Yes, MAX323EUA+ shares identical pinout and function with all MAX323 variants (e.g., MAX323ESA, MAX323EPA) across µMAX, SO, and DIP packages. Pin 1 = NO1, Pin 2 = COM1, Pin 3 = IN2, Pin 4 = GND, Pin 5 = NO2, Pin 6 = COM2, Pin 7 = IN1, Pin 8 = V+. Mechanical dimensions differ, but electrical connectivity and logic behavior are fully interchangeable.
What is the guaranteed charge injection specification for MAX323EUA+?
MAX323EUA+ guarantees ≤5pC maximum charge injection, measured with CL = 1.0nF, VGEN = 0V, and RGEN = 0Ω per Figure 4 in the datasheet. This value is tested at +25°C and correlated across temperature; it directly limits voltage glitch in sample-and-hold circuits using MAX323EUA+ as the acquisition switch.
Can MAX323EUA+ operate from a +3.3V supply while maintaining TTL logic compatibility?
No - TTL compatibility is only guaranteed at +5V supply. At +3.3V, logic thresholds shift; VINH must be driven to ≥3.3V and VINL to ≤0.6V for reliable switching. The datasheet explicitly states that "TTL compatibility is not guaranteed" below +5V, and recommends rail-to-rail logic drive to minimize power and ensure correct operation of MAX323EUA+.
MAX323EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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-uMAX/uSOP
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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