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Analog Devices Inc./Maxim Integrated MAX324CUA+T
- Part No.:
- MAX324CUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX324CUA+T.pdf
- Description:
- IC SWITCH SPST-NCX2 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,292
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Product details
Overview
MAX324CUA+T 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 battery-powered audio/video systems and precision data acquisition.
For engineers reviewing the MAX324CUA+T datasheet, MAX324CUA+T pinout, MAX324CUA+T application, or MAX324CUA+T equivalent, key selection criteria include NC-switch topology, µMAX-8 package compatibility, guaranteed break-before-make timing (not applicable-MAX325 only), low leakage over temperature, and TTL/CMOS logic interface behavior across 3.3V–15V supply rails.
Technical Context
The MAX324CUA+T implements two independent, bidirectional NC analog switches using precision CMOS process technology. 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 instrumentation paths.
It operates with rail-to-rail analog signal handling (0V to V+), supports logic inputs referenced to V+ (not fixed 0V/2.4V thresholds outside +5V), and integrates ESD protection exceeding 2000V per Method 3015.7-critical for field-deployed test equipment and military radio interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +16V single supply-supports direct integration with 3.3V, 5V, and 12V system rails without level shifters |
| On-Resistance (RON) | 60Ω max at +25°C, 75Ω max over full temp range-ensures <0.1% gain error in 10kΩ sensor interface paths |
| RON Matching | 2Ω max between channels-preserves amplitude balance in differential or dual-channel signal routing |
| Charge Injection | 5pC max-limits voltage glitch to <5mV on 1nF hold capacitors in sample-and-hold circuits |
| Turn-Off Time (tOFF) | 100ns max-enables >5MHz switching in automated test sequencing |
| Off-Leakage Current | 100pA max at +25°C, 5nA max at +85°C-maintains accuracy in picoamp-level sensor front-ends |
| ESD Rating | >2000V per Method 3015.7-meets MIL-STD-883 requirement for ruggedized communications hardware |
Pinout & Package
MAX324CUA+T is housed in an 8-pin µMAX package (3.0mm × 3.0mm, 0.8mm height), RoHS-compliant, with exposed pad for thermal enhancement. Pin pitch is 0.65mm; recommended PCB footprint matches Maxim's 21-0041A drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC1 | Normally closed analog terminal-conducts to COM1 when IN1 = LOW; open when IN1 = HIGH |
| 2 | COM1 | Common analog node for first switch-bidirectional signal path shared with NC1 |
| 3 | IN2 | Logic input for second switch-TTL/CMOS compatible only at +5V; otherwise requires rail-to-rail drive |
| 4 | GND | Analog/digital ground reference-must be low-impedance return for leakage-sensitive applications |
| 5 | NC2 | Normally closed analog terminal-conducts to COM2 when IN2 = LOW; open when IN2 = HIGH |
| 6 | COM2 | Common analog node for second switch-independent of COM1; enables dual isolated paths |
| 7 | IN1 | Logic input for first switch-active-low control; drives internal gate with <1µA supply current |
| 8 | V+ | Positive supply rail-powers analog core and logic; absolute max 17V; must be applied before analog signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual NC-switch topology | Provides fail-safe closed-path default state-critical for safety-critical shutdown or biasing circuits |
| 6Ω max RON flatness | Maintains consistent gain across full 0V–V+ analog range-eliminates distortion in video sync or audio DC-coupled paths |
| 5pC max charge injection | Enables sub-12-bit accuracy in 100ksps sample-and-hold stages without external correction |
| Single-supply +2.7V to +16V | Removes need for dual ±5V supplies in portable instrumentation-reduces BOM count and layout area |
| TTL/CMOS logic compatibility | At +5V supply, accepts standard 0.8V/2.4V thresholds; simplifies interface with microcontrollers and FPGAs |
Applications
| Battery-Operated Systems | Audio and Video Switching |
|---|---|
Use Scenario: Power management in handheld medical monitors where analog sensor paths must remain closed during sleep mode. IC Role / Device Role / Timing Role: Dual NC switch maintains bias continuity on ECG amplifier inputs while disabling digital subsystems. Use Value: Prevents sensor drift and startup settling delays-reducing wake-up latency by >200ms versus NO-switch alternatives. | Use Scenario: Source selection in HDMI audio extractor with analog RCA output. IC Role / Device Role / Timing Role: Bidirectional NC switch routes stereo L/R signals from multiple sources (set-top box, game console) to DAC inputs. Use Value: 60Ω RON and <6Ω flatness preserve frequency response up to 20kHz; <5pC injection prevents audible pop on channel change. |
| Test Equipment | Military Radios |
Use Scenario: Signal path multiplexing in automated RF power meter calibration fixtures. IC Role / Device Role / Timing Role: Precision NC switch selects between reference and DUT signal paths under microcontroller control. Use Value: 100pA leakage ensures <0.1% measurement error at 100mV full-scale; 100ns tOFF enables 5MHz test sequence rates. | Use Scenario: Antenna diversity switching in manpack tactical radios operating from 12V vehicle power. IC Role / Device Role / Timing Role: Fail-safe NC switch connects primary antenna; opens only upon confirmed secondary antenna readiness. Use Value: >2000V ESD rating survives field static discharge; -40°C to +85°C grade (E-grade variant) ensures reliability in desert/Arctic deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX324CSA+ | Same electrical specs; SO-8 package (4.9mm × 6.0mm), higher thermal resistance (5.88mW/°C derating) | Suitable for board space-constrained but thermally relaxed designs; not drop-in for µMAX footprints | Select when reflow compatibility with standard SOIC processes is prioritized over size |
| ADG1419BRMZ | SPDT dual switch (not NC-only); 4.7Ω RON; requires dual ±5V or single +15V; no guaranteed break-before-make | Used in high-precision multiplexers where low RON outweighs NC default requirement | Choose only if NC functionality is non-critical and lower on-resistance justifies redesign |
Compared with MAX324CSA+, MAX324CUA+T saves >60% board area and improves thermal performance in compact enclosures; versus ADG1419BRMZ, it provides deterministic NC fail-safe behavior and simpler single-supply biasing at the cost of higher RON.
Availability
MAX324CUA+T is available at Aetrix Electronics and suitable for battery-operated systems, audio/video switching, and test equipment requiring stable component supply across industrial temperature grades and long-lifecycle programs.
Supply support for MAX324CUA+T 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 precision instrumentation, communications, and industrial markets since 1965.
The MAX323/MAX324/MAX325 family was engineered for single-supply, low-leakage analog signal routing in portable and ruggedized systems-emphasizing NC/NO flexibility, rail-to-rail operation, and ESD-hardened construction.
FAQ
What is the default state of the switches in MAX324CUA+T?
The MAX324CUA+T contains two normally closed (NC) analog switches. When logic inputs IN1 and IN2 are low (≤0.8V), each switch conducts between its NC pin and corresponding COM pin. When inputs go high (≥2.4V at +5V supply), the path opens. This NC default ensures signal continuity during power-up or logic fault conditions-critical for safety-critical bias networks and fail-safe sensor interfaces in the MAX324CUA+T.
Does MAX324CUA+T support 3.3V logic control?
Yes, but with qualification: MAX324CUA+T logic inputs require rail-to-rail drive-i.e., low = 0V, high = V+. At +3.3V supply, VINH must be ≥3.3V (not 2.4V), and VINL ≤0V. Driving with standard 3.3V logic (0V/3.3V) is fully compatible; using 0V/2.4V violates the input spec and may increase leakage or delay. This behavior is explicitly defined in the MAX324CUA+T Applications Information section.
What is the maximum analog signal voltage range for MAX324CUA+T?
The MAX324CUA+T supports analog signals from 0V to V+ (ground to positive supply). With V+ = +12V, signals from 0V to +12V can be switched bidirectionally without degradation in RON flatness or leakage. Exceeding this range risks diode clamping and permanent damage-absolute maximum ratings specify VNO/VNC/VCOM ≤ V+ + 0.3V. This full-rail capability is a core design feature of the MAX324CUA+T.
Is MAX324CUA+T pin-compatible with MAX323CUA+T or MAX325CUA+T?
Yes-MAX324CUA+T shares identical 8-pin µMAX pinout with MAX323CUA+T (dual NO) and MAX325CUA+T (one NO, one NC). Pin functions differ only in switch type (NC vs NO), but physical layout, footprint, and supply/logic connections are identical. This allows direct PCB reuse across the MAX323/MAX324/MAX325 family, enabling flexible design variants without layout changes for the MAX324CUA+T.
What thermal derating applies to MAX324CUA+T in µMAX package?
The MAX324CUA+T µMAX package has a thermal derating factor of 4.10mW/°C above +70°C, with 330mW maximum continuous power dissipation at +70°C. At +85°C ambient, allowable power drops to 268.5mW. This is documented in the Absolute Maximum Ratings table and must be applied when calculating junction temperature rise in high-density layouts. Thermal performance is verified per the MAX324CUA+T package specification 21-0041A.
MAX324CUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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+T FAQ
1.How can I place an order for MAX324CUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX324CUA+T 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+T reliable?
The price and inventory of MAX324CUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX324CUA+T is usually 5 days.
3.What payment methods are accepted for MAX324CUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX324CUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX324CUA+T?
MAX324CUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX324CUA+T 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+T?
For technical support, including MAX324CUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX324CUA+T requirements.
6.How does Aetrix verify that MAX324CUA+T is sourced from the original manufacturer or authorized distributors?
All MAX324CUA+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX324CUA+T?
All MAX324CUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX324CUA+T, 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+T part is unused and in its original packaging.
Return procedure for MAX324CUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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