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Analog Devices Inc./Maxim Integrated MAX323CPA+
- Part No.:
- MAX323CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX323CPA+.pdf
- Description:
- IC SWITCH SPST-NO X 2 60OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,750
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Product details
Overview
MAX323CPA+ from Analog Devices is a precision dual normally-open (NO) single-pole single-throw (SPST) analog switch IC, 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-fidelity signal routing in battery-powered instrumentation and portable audio/video systems.
For engineers reviewing the MAX323CPA+ datasheet, MAX323CPA+ pinout, MAX323CPA+ application, or MAX323CPA+ equivalent, key selection criteria include guaranteed RON flatness (<6Ω), 100pA max leakage at +85°C, 150ns max tON, 5pC max charge injection, and 2000V ESD robustness per Method 3015.7.
Technical Context
The MAX323CPA+ implements two independent, bidirectional SPST switches with TTL/CMOS-compatible logic inputs and rail-to-rail analog signal handling (0V to V+). Its CMOS architecture ensures low distortion and minimal signal-dependent on-resistance variation across the full analog range.
Each switch features break-before-make isolation only in the MAX325 variant - not applicable to MAX323CPA+. The device operates without external biasing, supports hot-swap-safe sequencing when V+ is applied before analog/logic signals, and integrates internal clamping diodes for overvoltage protection up to ±8V relative to supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +16V single supply - enables direct interface with 3.3V, 5V, and 12V systems without level-shifting. |
| Max RON | 60Ω at +25°C, 75Ω over full temperature range - ensures minimal insertion loss and gain error in precision signal paths. |
| RON Matching | <2Ω max between channels - critical for matched gain/attenuation in differential or dual-path circuits. |
| Charge Injection | ≤5pC - limits voltage glitch in sample-and-hold and ADC front-end applications. |
| tON/tOFF | 150ns/100ns max - supports multiplexing of audio, video, and test signals up to ~3MHz bandwidth. |
| Leakage Current | 100pA max at +25°C; ≤2.5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and long-hold capacitors. |
| ESD Rating | >2000V per Method 3015.7 - enhances reliability in handheld and field-deployable equipment. |
Pinout & Package
MAX323CPA+ uses an 8-pin plastic DIP (dual in-line package) with 0.300-inch width, RoHS-compliant lead finish, and through-hole mounting. Pin 4 is GND; pin 8 is V+; pins 1 and 5 are NO1 and NO2; pins 2 and 6 are COM1 and COM2; pins 3 and 7 are IN2 and IN1 respectively.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Normally Open analog terminal | Connects to COM1 only when IN1 = logic high - defines first SPST switch path. |
| 2 (COM1) | Common analog terminal | Bidirectional node shared between NO1 and internal switch - serves as input or output. |
| 3 (IN2) | Logic input for second switch | TTL/CMOS-compatible control; drives NO2–COM2 path when high (V+). |
| 4 (GND) | Ground reference | Return path for supply current and logic threshold reference - must be low-impedance. |
| 5 (NO2) | Normally Open analog terminal | Connects to COM2 only when IN2 = logic high - defines second independent SPST switch. |
| 6 (COM2) | Common analog terminal | Bidirectional node shared between NO2 and internal switch - isolated from COM1. |
| 7 (IN1) | Logic input for first switch | TTL/CMOS-compatible control; drives NO1–COM1 path when high (V+). |
| 8 (V+) | Positive supply | Single power rail powering both analog and logic sections - no negative supply required. |
Key Features
| Feature | Design Value |
|---|---|
| Dual NO configuration | Two independent normally-open switches - eliminates default signal path continuity; ideal for safety-critical or zero-default routing. |
| RON flatness | <6Ω max over full analog range (0V to V+) - maintains consistent gain/attenuation regardless of signal voltage. |
| Low leakage | <100pA at +25°C, <2.5nA at +85°C - prevents DC offset drift in high-Z sensor amplifiers and integrators. |
| Fast switching | tON <150ns, tOFF <100ns - supports time-division multiplexing of audio, video, and test waveforms. |
| Single-supply simplicity | Operates from +2.7V to +16V - removes need for dual supplies or charge pumps in portable and industrial systems. |
Applications
| Battery-Operated Instrumentation | Audio Signal Routing |
|---|---|
Use Scenario: Portable multimeter front-end multiplexing of voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: Dual SPST analog switch isolating sensor inputs and scaling networks under microcontroller control. Use Value: 5μW quiescent power extends battery life; 100pA leakage avoids measurement drift during long sampling intervals. | Use Scenario: Headphone jack detection and left/right channel routing in compact media players. IC Role / Device Role / Timing Role: Bidirectional analog switch selecting between internal DAC outputs and external audio sources. Use Value: 60Ω RON and <6Ω flatness preserve audio fidelity; 5pC charge injection prevents audible click/pop artifacts. |
| Test Equipment Multiplexing | Guidance System Signal Conditioning |
Use Scenario: Automated test equipment (ATE) scanning multiple DUTs using shared signal sources and digitizers. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential connection of stimulus and response paths without cross-talk. Use Value: 85dB crosstalk and 72dB off-isolation prevent measurement contamination; fast tON/tOFF improves test throughput. | Use Scenario: Inertial measurement unit (IMU) signal conditioning where gyro and accelerometer outputs are selectively routed to ADCs. IC Role / Device Role / Timing Role: Low-leakage, rail-to-rail analog switch interfacing high-impedance MEMS transducer outputs. Use Value: 2.5nA max leakage at +85°C ensures stable biasing in avionics-grade thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX323CSA+ | Same electrical specs; SO-8 surface-mount package instead of PDIP - 5.0mm × 4.0mm footprint vs. 9.91mm × 6.10mm. | Suitable for space-constrained PCBs; requires reflow soldering instead of through-hole assembly. | Select MAX323CSA+ for automated SMT production; retain MAX323CPA+ for prototyping, repair, or legacy through-hole designs. |
| ADG1419BRUZ | Higher RON (1.3Ω typ), wider supply (±5V to ±16.5V), but dual NC configuration - not functionally identical. | Requires dual-supply design; better for high-voltage AC coupling, worse for single-supply battery systems. | Choose ADG1419BRUZ only if bipolar signal handling or lower RON is mandatory; MAX323CPA+ remains optimal for low-power, single-rail NO switching. |
Compared with MAX323CSA+, MAX323CPA+ offers mechanical robustness and hand-solderability at the cost of board area; versus ADG1419BRUZ, it trades higher RON for simpler supply architecture, lower leakage, and guaranteed NO behavior - making it superior for portable, precision DC-coupled applications.
Availability
MAX323CPA+ is available at Aetrix Electronics and suitable for battery-operated instrumentation, audio signal routing, test equipment multiplexing, and guidance system signal conditioning requiring stable component supply and long-term obsolescence management.
Supply support for MAX323CPA+ 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 MAX323CPA+ 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 systems where power efficiency and DC accuracy are critical.
FAQ
What is the maximum supply voltage rating for MAX323CPA+?
The MAX323CPA+ has an absolute maximum supply voltage of +17V, with recommended operating range from +2.7V to +16V. Exceeding +17V may cause permanent damage. At +16V, RON remains within specification, and leakage stays below 5nA at +85°C - verified per datasheet Table "Electrical Characteristics-Single +16V Supply".
Does MAX323CPA+ support rail-to-rail analog signal switching?
Yes, MAX323CPA+ supports analog signals from 0V to V+ (rail-to-rail) with minimal RON variation - flatness is guaranteed ≤6Ω across the full range. This is confirmed in Figure MAX323-01 ("RON vs. VCOM") and specified in Note 5 of the datasheet, enabling accurate DC-coupled signal routing without clipping.
Is MAX323CPA+ pin-compatible with MAX324CPA+ or MAX325CPA+?
No - while all three share the same 8-pin PDIP package and pinout, their switch configurations differ: MAX323CPA+ is dual NO, MAX324CPA+ is dual NC, and MAX325CPA+ is one NO + one NC. Swapping them without circuit redesign will invert signal path behavior and may cause system failure.
What is the typical on-resistance of MAX323CPA+ at 3.3V supply?
At +3.3V supply and +25°C, MAX323CPA+ exhibits typical RON of 83Ω (min 83Ω, max 175Ω per datasheet Table "Electrical Characteristics-Single +3.0V to +3.6V Supply"). This is higher than the 33Ω typ at +5V due to reduced channel drive strength - a known trade-off confirmed in Figure MAX323-01.
Can MAX323CPA+ be used in hot-swap applications?
MAX323CPA+ supports controlled hot-swap operation only if V+ is applied before analog or logic signals - per "Power-Supply Sequencing" section. If sequencing cannot be guaranteed, external blocking diodes (D1/D2 per Figure 1) are required to prevent latch-up. Without protection, exceeding absolute max ratings on any pin risks permanent damage.
MAX323CPA+ 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX323CPA+ FAQ
1.How can I place an order for MAX323CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX323CPA+ 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 MAX323CPA+ reliable?
The price and inventory of MAX323CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX323CPA+ is usually 5 days.
3.What payment methods are accepted for MAX323CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX323CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX323CPA+?
MAX323CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX323CPA+ 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 MAX323CPA+?
For technical support, including MAX323CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX323CPA+ requirements.
6.How does Aetrix verify that MAX323CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX323CPA+ 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 MAX323CPA+ meets industry standards.
7.What is the process for return or replacement of MAX323CPA+?
All MAX323CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX323CPA+, 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 MAX323CPA+ part is unused and in its original packaging.
Return procedure for MAX323CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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