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Analog Devices Inc./Maxim Integrated MAX323CUA+T
- Part No.:
- MAX323CUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX323CUA+T.pdf
- Description:
- IC SWITCH SPST-NOX2 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,423
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Product details
Overview
MAX323CUA+T from Analog Devices is a precision dual SPST analog switch with two normally open (NO) channels, designed for single-supply operation from +2.7V to +16V. It delivers 60Ω max on-resistance, <2Ω channel-to-channel RON matching, and ultra-low 5μW power consumption - enabling high-accuracy signal routing in battery-powered instrumentation and portable data acquisition systems.
For engineers reviewing the MAX323CUA+T datasheet, MAX323CUA+T pinout, MAX323CUA+T application, or MAX323CUA+T equivalent, key selection criteria include guaranteed RON flatness (<6Ω), 100pA max leakage at +85°C, 150ns max tON, 5pC max charge injection, and μMAX-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX323CUA+T implements CMOS transmission-gate architecture with rail-to-rail analog signal handling (0V to V+) and TTL/CMOS-compatible logic inputs. Its dual NO configuration enables independent control of two signal paths without break-before-make timing constraints.
Internal protection diodes clamp input signals beyond V+ or GND, supporting robust operation in mixed-signal environments. The device guarantees 2000V ESD (HBM, Method 3015.7) and maintains <2.5nA COM on-leakage at +85°C - critical for precision sample-and-hold and sensor multiplexing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +16V - supports direct integration with 3.3V, 5V, and 12V system rails without level-shifting. |
| Max On-Resistance (RON) | 60Ω at +25°C, 75Ω over full temperature range - ensures minimal gain error in precision amplifier signal paths. |
| RON Matching | <2Ω at +25°C, <4Ω over temperature - preserves amplitude fidelity when switching differential or matched signal pairs. |
| Charge Injection | ≤5pC - limits voltage glitch in sample-and-hold circuits, enabling ≤12-bit accuracy without additional correction. |
| Leakage Current | ≤100pA at +25°C, ≤5nA at +85°C - prevents DC offset drift in high-impedance sensor front-ends. |
| Switching Speed | tON ≤150ns, tOFF ≤100ns - supports multiplexing of audio-band and low-MHz digital signals with minimal settling delay. |
| ESD Rating | >2000V HBM - reduces need for external ESD protection in handheld test equipment interfaces. |
Pinout & Package
The MAX323CUA+T is housed in an 8-pin μMAX package (pin pitch 0.65mm, body size 3.05mm × 3.05mm × 0.95mm), optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NO1 | Normally open analog terminal of Channel 1 - connects to COM1 only when IN1 = logic high. |
| 2 | COM1 | Common analog node for Channel 1 - bidirectional path between NO1 and internal switch. |
| 3 | IN2 | Logic input controlling Channel 2 - TTL/CMOS compatible; drives internal gate of second switch. |
| 4 | GND | Analog and digital ground reference - must be low-impedance connection to minimize noise coupling. |
| 5 | NO2 | Normally open analog terminal of Channel 2 - connects to COM2 only when IN2 = logic high. |
| 6 | COM2 | Common analog node for Channel 2 - bidirectional path between NO2 and internal switch. |
| 7 | IN1 | Logic input controlling Channel 1 - active-high control; referenced to GND and V+. |
| 8 | V+ | Positive supply rail - powers analog switches and logic interface; absolute max 17V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Normally Open (NO) Configuration | Enables independent, non-interfering signal routing for two separate analog paths without cross-talk risk. |
| Single-Supply Operation (+2.7V to +16V) | Eliminates need for dual ±5V supplies in portable instrumentation, reducing BOM count and power stage complexity. |
| Guaranteed RON Flatness <6Ω | Maintains consistent gain across full analog signal range (0V to V+), critical for linear transducer signal conditioning. |
| 5pC Max Charge Injection | Minimizes hold-step error in precision ADC sample-and-hold stages, supporting 12-bit+ resolution without calibration. |
| 100pA Max Off-Leakage at +25°C | Preserves signal integrity in high-impedance medical sensor front-ends and piezoelectric signal chains. |
Applications
| Battery-Powered Data Loggers | Audio Signal Routing |
|---|---|
|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs into a single 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Precision analog switch selecting sensor inputs while maintaining low thermal EMF and minimal RON drift. Use Value: Enables 0.01% gain accuracy across all channels via <2Ω RON matching and <6Ω flatness - eliminating per-channel calibration. |
Use Scenario: Selecting between microphone preamp outputs and line-level inputs in a portable audio mixer. IC Role / Device Role / Timing Role: Bidirectional analog switch routing AC-coupled audio signals with minimal THD and crosstalk. Use Value: Delivers 85dB crosstalk suppression and 72dB off-isolation at 1MHz - preserving stereo separation and dynamic range. |
| Test Equipment Signal Paths | Industrial Sensor Multiplexing |
|
Use Scenario: Switching DUT signals between oscilloscope inputs, spectrum analyzers, and calibration references. IC Role / Device Role / Timing Role: Low-charge-injection switch isolating measurement paths during automated test sequencing. Use Value: 5pC max charge injection prevents voltage glitches that would corrupt fast-settling measurements on sub-100ns timebases. |
Use Scenario: Scanning 16-channel 4–20mA current-loop sensors in PLC analog input modules. IC Role / Device Role / Timing Role: High-voltage-tolerant analog switch routing loop-powered sensor outputs to isolated ADC front-ends. Use Value: +16V max supply rating allows direct use with industrial 24V loop supplies; 2000V ESD protects against field-installation transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1208BRUZ | 8-channel single-pole, higher RON (120Ω typ), ±15V dual-supply only | Requires dual supply and offers more channels but lower precision | Select when multi-channel density outweighs on-resistance and single-supply needs. |
| TS5A23157DCUR | Lower voltage (5.5V max), smaller 6-pin SC70 package, 0.9Ω RON but no guaranteed flatness spec | Optimized for consumer portables; lacks high-temp leakage and ESD specs | Prefer for cost-sensitive, low-voltage, space-constrained designs where 2000V ESD is not required. |
Compared with ADG1208BRUZ and TS5A23157DCUR, the MAX323CUA+T uniquely balances single-supply flexibility (+2.7V to +16V), precision RON performance (<60Ω, <6Ω flatness), and industrial-grade reliability (2000V ESD, -40°C to +85°C extended temp option), making it optimal for test, measurement, and ruggedized embedded systems.
Availability
MAX323CUA+T is available at Aetrix Electronics and suitable for battery-operated instrumentation, precision data acquisition, and industrial sensor interface applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX323CUA+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, industrial automation, and communications markets.
The MAX323CUA+T belongs to the MAX32x family of precision single-supply analog switches, engineered specifically for low-leakage, low-distortion signal routing in portable and high-reliability measurement systems.
FAQ
What is the maximum supply voltage rating for the MAX323CUA+T?
The MAX323CUA+T has an absolute maximum supply voltage of +17V, with recommended operating range from +2.7V to +16V. Exceeding +17V risks permanent damage due to internal diode clamping limits. At +16V operation, the device maintains full specification compliance including 60Ω max RON and <100pA leakage at +25°C - confirmed in the Electrical Characteristics table under "Absolute Maximum Ratings" and "Single +5V Supply" sections.
Does the MAX323CUA+T support rail-to-rail analog signal switching?
Yes, the MAX323CUA+T supports true rail-to-rail analog signal switching from 0V to V+, as explicitly stated in the Applications Information section: "Analog signals that range over the entire supply voltage (V+ to GND) can be switched with very little change in on-resistance." This is enabled by its CMOS transmission-gate design and verified by RON flatness data showing ≤6Ω variation across the full 0V–V+ range at +25°C.
What is the guaranteed charge injection specification for the MAX323CUA+T?
The MAX323CUA+T guarantees ≤5pC maximum charge injection, measured under CL = 1.0nF, VGEN = 0V, RGEN = 0Ω conditions at +25°C (Electrical Characteristics table, "Charge Injection" row). This value is production-tested and applies to both channels, directly enabling high-accuracy sample-and-hold circuits with ≤1LSB error in 12-bit systems.
Is the MAX323CUA+T pin-compatible with other variants in the MAX323 family?
Yes, the MAX323CUA+T shares identical pinout and functionality with all MAX323 variants (e.g., MAX323CPA, MAX323CSA) across µMAX, SO, and PDIP packages - confirmed by the Pin Configurations diagram and Ordering Information table. All MAX323 parts feature the same NO1/COM1/IN2/GND/NO2/COM2/IN1/V+ arrangement and dual-NO switching behavior.
What is the leakage current performance of the MAX323CUA+T at elevated temperature?
At +85°C, the MAX323CUA+T guarantees ≤5nA maximum COM on-leakage (ICOM(ON)) and ≤5nA maximum NO off-leakage (INO(OFF)), as specified in the Electrical Characteristics table under "TMIN to TMAX" columns for C/E grade parts. This is validated by the "ON LEAKAGE CURRENT vs. TEMPERATURE" and "OFF LEAKAGE CURRENT vs. TEMPERATURE" plots on page 5, showing <2.5nA typical at +85°C.
MAX323CUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX323CUA+T FAQ
1.How can I place an order for MAX323CUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX323CUA+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 MAX323CUA+T reliable?
The price and inventory of MAX323CUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX323CUA+T is usually 5 days.
3.What payment methods are accepted for MAX323CUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX323CUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX323CUA+T?
MAX323CUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX323CUA+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 MAX323CUA+T?
For technical support, including MAX323CUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX323CUA+T requirements.
6.How does Aetrix verify that MAX323CUA+T is sourced from the original manufacturer or authorized distributors?
All MAX323CUA+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 MAX323CUA+T meets industry standards.
7.What is the process for return or replacement of MAX323CUA+T?
All MAX323CUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX323CUA+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 MAX323CUA+T part is unused and in its original packaging.
Return procedure for MAX323CUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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