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Analog Devices Inc./Maxim Integrated MAX324CUA+
- Part No.:
- MAX324CUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX324CUA+.pdf
- Description:
- IC SWITCH SPST-NCX2 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
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Product details
Overview
MAX324CUA+ from Analog Devices is a precision dual SPST analog switch with normally closed (NC) configuration, designed for single-supply operation from +2.7V to +16V. It delivers 60Ω max on-resistance, <5pC charge injection, 100ns max turn-off time, and 100pA max off-leakage at +25°C - enabling high-fidelity signal routing in low-power, battery-operated instrumentation and audio systems.
For engineers reviewing the MAX324CUA+ datasheet, MAX324CUA+ pinout, MAX324CUA+ application, or MAX324CUA+ equivalent, key selection criteria include NC-switch topology, µMAX-8 package compatibility, guaranteed break-before-make timing (not applicable - MAX324 only), leakage performance over temperature, and TTL/CMOS logic interface behavior across supply voltages.
Technical Context
The MAX324CUA+ implements two independent, bidirectional NC analog switches controlled by CMOS/TTL-compatible logic inputs. Each channel features matched on-resistance (<2Ω typical matching at +25°C) and flat RON (<6Ω max variation over full analog signal range), ensuring minimal gain error in precision multiplexing paths.
Its internal architecture supports rail-to-rail analog signal switching (0V to V+) without degradation in dynamic performance, while maintaining sub-5μW quiescent power and >2000V HBM ESD robustness - critical for portable test equipment and military radio front-ends where signal integrity and reliability coexist under constrained power budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPST, normally closed (NC) - both channels conduct when logic input is low; no break-before-make timing required. |
| On-Resistance (RON) | 60Ω max at +25°C, V+ = 5V - ensures ≤0.1% gain error in 600Ω impedance interfaces. |
| RON Matching | <2Ω max between channels at +25°C - enables precise differential signal routing without channel-to-channel gain skew. |
| Charge Injection | 5pC max - limits voltage glitch to <5mV on 1nF hold capacitors, preserving accuracy in sample-and-hold circuits. |
| Turn-Off Time (tOFF) | 100ns max at +25°C - supports ≥5MHz switching in high-speed data acquisition paths. |
| Off-Leakage Current | 100pA max at +25°C, rising to 5nA max over full operating range - maintains signal integrity in high-impedance sensor interfaces. |
| Supply Range | +2.7V to +16V single supply - allows direct integration with 3.3V, 5V, and 12V system rails without level-shifting. |
Pinout & Package
MAX324CUA+ is housed in an 8-pin µMAX package (pin pitch 0.65mm, body size 3.05mm × 3.05mm × 0.95mm), RoHS-compliant and thermally optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC1 | Normally closed analog terminal for Switch 1 - connects to COM1 when IN1 = logic low. |
| 2 | COM1 | Common analog node for Switch 1 - bidirectional path between NC1 and external circuitry. |
| 3 | IN2 | Logic control input for Switch 2 - active-low enables NC2–COM2 conduction. |
| 4 | GND | Analog and digital ground reference - must be low-impedance for leakage and noise control. |
| 5 | NC2 | Normally closed analog terminal for Switch 2 - connects to COM2 when IN2 = logic low. |
| 6 | COM2 | Common analog node for Switch 2 - bidirectional path between NC2 and external circuitry. |
| 7 | IN1 | Logic control input for Switch 1 - active-low enables NC1–COM1 conduction. |
| 8 | V+ | Positive supply rail - powers internal switch core and logic; absolute max 17V. |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | <6Ω max RON variation across 0V–V+ analog range - preserves linearity in DAC/ADC interface applications. |
| TTL/CMOS logic compatibility | Guaranteed VINH = 2.4V / VINL = 0.8V at V+ = 5V - eliminates need for external logic translators in mixed-voltage systems. |
| Ultra-low power consumption | <5μW typical supply current - extends battery life in portable medical monitors and handheld test gear. |
| High ESD robustness | >2000V per Method 3015.7 - reduces field failure risk in unshielded industrial environments. |
| Temperature-stable leakage | <2.5nA max COM off-leakage at +85°C - ensures stable bias in high-temperature guidance systems. |
Applications
| Battery-Operated Instrumentation | Audio Signal Routing |
|---|---|
|
Use Scenario: Low-power handheld multimeter selecting between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: Dual NC switch isolates unused front-end circuits during measurement, minimizing loading and offset drift. Use Value: 100pA leakage and 60Ω RON ensure ≤0.01% reading error in 10MΩ input impedance modes. |
Use Scenario: Headphone amplifier output switching between left/right channels and mono summing. IC Role / Device Role / Timing Role: Bidirectional NC path routes analog audio signals with minimal crosstalk and distortion. Use Value: 85dB crosstalk and 5pC charge injection prevent audible pop/click during channel transitions. |
| Test Equipment Multiplexing | Military Radio Front-End |
|
Use Scenario: Automated test system routing calibration signals to multiple DUTs via shared analog backplane. IC Role / Device Role / Timing Role: Precision SPST switch provides repeatable, low-RON connection for metrology-grade signal paths. Use Value: 2Ω RON matching and 72dB off-isolation maintain ±0.005dB amplitude accuracy across channels. |
Use Scenario: RF receiver protection circuit switching antenna input between receive and self-test modes. IC Role / Device Role / Timing Role: NC switch defaults to safe receive path; logic-controlled open during built-in test. Use Value: 2000V ESD rating and -40°C to +85°C operation meet MIL-STD-810G environmental requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NC analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX324CSA+ | Same electrical specs; SO-8 package (4.9mm × 6.0mm) vs. µMAX-8 (3.05mm × 3.05mm). | Preferred for through-hole prototyping or higher thermal mass requirements; less suitable for ultra-dense layouts. | Select MAX324CSA+ when board assembly uses standard SOIC reflow profiles and space permits larger footprint. |
| ADG1412BRUZ | Quad SPST, NC, 1.8Ω RON, but requires dual ±15V or single +36V supply - not single +2.7V–+16V compatible. | Used in high-voltage industrial PLC I/O modules; incompatible with low-voltage battery systems. | Choose ADG1412BRUZ only if supply exceeds +16V or sub-2Ω RON is mandatory; otherwise MAX324CUA+ offers superior voltage flexibility. |
Compared with MAX324CSA+, MAX324CUA+ saves >65% board area while retaining identical analog performance; versus ADG1412BRUZ, it enables true single-supply portability but trades ~58× higher RON for wide-voltage operability and micro-size.
Availability
MAX324CUA+ is available at Aetrix Electronics and suitable for battery-operated instrumentation, audio signal routing, and test equipment requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX324CUA+ 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 since 1965.
The MAX324CUA+ belongs to the MAX32x precision analog switch family, engineered for low-leakage, low-distortion signal routing in portable and mission-critical systems where single-supply simplicity and parametric stability are essential.
FAQ
What is the maximum supply voltage rating for MAX324CUA+?
The MAX324CUA+ has an absolute maximum V+ rating of +17V, with recommended operating range from +2.7V to +16V. Exceeding +17V risks permanent damage due to internal diode clamp breakdown. At +16V, RON remains within spec (≤75Ω over temperature), and leakage stays below 40nA - making it suitable for 12V industrial rails with margin.
Does MAX324CUA+ support rail-to-rail analog signal switching?
Yes, MAX324CUA+ supports analog signals from GND to V+ (0V to +16V) with minimal RON variation - flatness is guaranteed ≤6Ω over this full range at +25°C. This enables accurate switching of DAC outputs, sensor bridges, and op-amp signals without clipping or gain nonlinearity, even at supply extremes.
Is MAX324CUA+ pin-compatible with MAX323CUA+ or MAX325CUA+?
No - MAX324CUA+ is not pin-compatible with MAX323CUA+ (dual NO) or MAX325CUA+ (one NO + one NC). While all share the same µMAX-8 package and pinout numbering, the terminal functions differ: Pin 1 is NC1 for MAX324CUA+, but NO1 for MAX323CUA+ and NO1 for MAX325CUA+. Swapping them causes incorrect default states and potential signal shorts.
What is the guaranteed charge injection specification for MAX324CUA+?
MAX324CUA+ guarantees ≤5pC maximum charge injection, measured with CL = 1.0nF, VGEN = 0V, and RGEN = 0Ω. This low value minimizes voltage glitches on sample-and-hold capacitors - for example, inducing just 5mV error on a 1nF capacitor - making it suitable for precision data acquisition systems where aperture uncertainty must be sub-10mV.
How does MAX324CUA+ behave with a 3.3V supply?
At V+ = 3.3V, MAX324CUA+ maintains full functionality but with adjusted timing and resistance: tOFF increases to 125ns max, RON rises to 175Ω max, and logic thresholds remain valid only if driven rail-to-rail (0V/3.3V). TTL compatibility is not guaranteed below 4.5V; thus, microcontroller GPIOs must swing fully to avoid increased supply current and undefined switching.
MAX324CUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX324CUA+ FAQ
1.How can I place an order for MAX324CUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX324CUA+ 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 MAX324CUA+ reliable?
The price and inventory of MAX324CUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX324CUA+ is usually 5 days.
3.What payment methods are accepted for MAX324CUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX324CUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX324CUA+?
MAX324CUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX324CUA+ 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 MAX324CUA+?
For technical support, including MAX324CUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX324CUA+ requirements.
6.How does Aetrix verify that MAX324CUA+ is sourced from the original manufacturer or authorized distributors?
All MAX324CUA+ 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 MAX324CUA+ meets industry standards.
7.What is the process for return or replacement of MAX324CUA+?
All MAX324CUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX324CUA+, 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 MAX324CUA+ part is unused and in its original packaging.
Return procedure for MAX324CUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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