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Analog Devices Inc./Maxim Integrated MAX322CSA+
- Part No.:
- MAX322CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX322CSA+.pdf
- Description:
- IC SW SPST-NO/NCX2 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:154
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Product details
Overview
The MAX322CSA+ from Maxim Integrated is a precision dual-supply SPST analog switch featuring one normally open (NO) and one normally closed (NC) channel, designed for ±3V to ±8V bipolar operation. It delivers 35Ω max on-resistance, <5pC charge injection, guaranteed break-before-make switching (2–5ns delay), and 100pA max off-leakage - enabling high-fidelity signal routing in ±5V DAC/ADC interfaces and battery-powered test equipment.
For engineers reviewing the MAX322CSA+ datasheet, MAX322CSA+ pinout, MAX322CSA+ application, or MAX322CSA+ equivalent, key selection criteria include verified break-before-make timing, low RON flatness (<4Ω), ESD robustness (>2000V), and compatibility with ±5V signal chains in military radios and guidance systems.
Technical Context
The MAX322CSA+ implements complementary MOSFET pairs per switch with matched threshold design to ensure <2Ω RON matching between its NO1 and NC2 channels. Its logic interface accepts TTL/CMOS-compatible inputs referenced to V+, with VIH = V+ − 1.5V and VIL = V+ − 2.5V under ±5V supplies.
Break-before-make operation is architecturally enforced in the MAX322 variant only - confirmed by truth table, functional diagram, and tD specification (2–5ns) - preventing momentary short-circuit during channel transitions in critical analog multiplexing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 35Ω max at ±5V - ensures minimal signal attenuation and gain error in precision ±5V DAC/ADC paths |
| RON Matching | <2Ω between channels - maintains amplitude consistency across dual-channel sampling or differential switching |
| Charge Injection | <5pC - limits voltage glitch on sampled hold capacitors, critical for 12-bit+ data acquisition accuracy |
| Break-Before-Make Delay | 2–5ns - guarantees no overlap between NO1 and NC2 conduction, eliminating transient shorts in safety-critical control paths |
| Off-Leakage Current | 100pA max at +25°C - preserves high-impedance node integrity in low-power sensor front-ends and battery-operated systems |
| Supply Range | ±3V to ±8V - supports wide analog signal swing (V− to V+) without rail-to-rail clamping diodes activating |
| ESD Protection | >2000V per Method 3015.7 - enables direct handling and board-level integration without additional protection circuitry |
Pinout & Package
MAX322CSA+ is housed in an 8-pin SO (Small Outline) package rated for 0°C to +70°C operation, with gull-wing leads and 1.27mm pitch. Pin 1 is marked via notch or dot; device orientation follows standard SO top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Bias source for internal level-shifting logic and P-channel switches; must be applied before V− and signals |
| IN1 | Logic input for switch 1 | Controls NO1/NC1 state; active-high logic with thresholds tied to V+ (VIH = V+ − 1.5V) |
| COM2 | Analog common terminal, channel 2 | Signal path junction for NC2; bidirectional - may serve as input or output depending on system topology |
| NC2 | Normally closed analog terminal, channel 2 | Conducts to COM2 when IN2 = low; used for default-path routing in fail-safe analog control loops |
| V− | Negative supply rail | Bias source for N-channel switches; must be stable before applying analog inputs to avoid latch-up |
| IN2 | Logic input for switch 2 | Controls NO2/NC2 state; independent of IN1 - enables asynchronous dual-channel control |
| COM1 | Analog common terminal, channel 1 | Signal path junction for NO1; bidirectional - supports true analog multiplexing without polarity constraints |
| NO1 | Normally open analog terminal, channel 1 | Connects to COM1 only when IN1 = high; selected for interrupt-driven signal gating in test equipment triggers |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | 2–5ns delay prevents simultaneous conduction in MAX322CSA+, essential for fault-tolerant analog routing |
| Low RON flatness | <4Ω variation over full ±5V analog range - maintains linearity in audio/video switching and precision instrumentation |
| Bipolar supply flexibility | Operates from ±3V to ±8V - eliminates need for external level shifters when interfacing with legacy ±5V or ±12V systems |
| Ultra-low leakage | <2.5nA at +85°C - sustains high-impedance node stability in long-duration sample-and-hold circuits |
| Fast switching | tON <150ns, tOFF <100ns - supports multiplexing rates up to ~5MHz in automated test equipment scan paths |
Applications
| Battery-Powered Test Equipment | ±5V Precision Data Acquisition |
|---|---|
Use Scenario: Portable multimeter front-end switching between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: Dual-channel analog switch providing isolated signal routing with break-before-make assurance to prevent meter damage during range changes. Use Value: 100pA leakage and 35Ω RON preserve measurement accuracy across 4½-digit resolution while enabling >100-hour battery life. |
Use Scenario: Channel selection in 16-bit SAR ADC input stage with ±5V reference and driver op-amps. IC Role / Device Role / Timing Role: Precision SPST switch isolating ADC input from multiple sensor sources, leveraging low charge injection to minimize sampling error. Use Value: <5pC charge injection reduces code-dependent offset errors, maintaining integral nonlinearity (INL) within ±1 LSB. |
| Military Radio Signal Routing | Heads-Up Display (HUD) Video Multiplexing |
Use Scenario: RF front-end calibration path switching in handheld tactical radios operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Analog switch enabling antenna calibration loop insertion without disrupting main receive path continuity. Use Value: Guaranteed break-before-make and >2000V ESD withstand allow reliable field deployment in high-static environments. |
Use Scenario: Selecting between primary flight display and synthetic vision video sources in aircraft HUD systems. IC Role / Device Role / Timing Role: Bidirectional video switch routing composite or RGB signals with minimal crosstalk and distortion. Use Value: 85dB crosstalk and 9pF off-capacitance preserve 640×480@60Hz video integrity without ghosting or edge ringing. |
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 |
|---|---|---|---|
| MAX322ESA+ | Same electrical specs but rated for −40°C to +85°C industrial temperature range; identical SO-8 footprint | Suitable for extended-temperature embedded systems where MAX322CSA+'s 0°C to +70°C range is insufficient | Select MAX322ESA+ when operating ambient exceeds 70°C or requires automotive-grade thermal margin |
| ADG1422BRMZ | Single-supply operation (up to ±15V dual), 1.8Ω typical RON, but no guaranteed break-before-make; 10-lead MSOP package | Preferred for ultra-low-RON applications where timing overlap is managed externally or not required | Choose ADG1422BRMZ only if break-before-make is unnecessary and lower on-resistance justifies PCB layout change |
Compared with MAX322ESA+, the MAX322CSA+ offers identical functionality at lower cost and qualification for commercial-temperature use; versus ADG1422BRMZ, it provides architecturally enforced break-before-make - a non-negotiable requirement in safety-critical analog routing where transient shorts must be eliminated.
Availability
MAX322CSA+ is available at Aetrix Electronics and suitable for battery-operated test equipment, ±5V precision data acquisition systems, and military radio signal routing requiring stable component supply across commercial temperature grades.
Supply support for MAX322CSA+ 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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for precision, power, and interface applications in industrial, communications, and aerospace markets.
The MAX320/MAX321/MAX322 family was engineered specifically for bipolar-supply analog switching in systems demanding low leakage, low distortion, and deterministic timing - targeting instrumentation, defense electronics, and portable measurement tools.
FAQ
What is the guaranteed break-before-make timing for MAX322CSA+?
The MAX322CSA+ guarantees a break-before-make delay of 2ns minimum to 5ns maximum, measured between turn-off of one switch and turn-on of the other. This parameter is explicitly specified in the Electrical Characteristics table and applies only to the MAX322 variant - confirming that MAX322CSA+ enforces this timing behavior without external circuitry or timing constraints.
Does MAX322CSA+ support single-supply operation?
No, MAX322CSA+ is designed exclusively for dual-supply operation from ±3V to ±8V. It does not function correctly with single-ended supplies. For single-supply alternatives, refer to the MAX323/MAX324/MAX325 series - MAX322CSA+ requires both V+ and V− rails to bias its complementary switch architecture and logic interface.
What is the maximum analog signal voltage range supported by MAX322CSA+?
MAX322CSA+ supports analog signals from V− to V+, meaning the full range spans (V−) to (V+) - e.g., ±5V supplies enable −5V to +5V signal handling. Absolute maximum ratings limit total supply span to 17V (V+ − V− ≤ 17V), and signals exceeding V+ or V− are clamped by internal diodes, requiring external current limiting to stay within 30mA continuous rating.
Can MAX322CSA+ be used in audio signal paths?
Yes, MAX322CSA+ is suitable for audio switching due to its 85dB crosstalk, 9pF off-capacitance, and <4Ω RON flatness - all contributing to low distortion and channel separation. Its 150ns tON supports sampling rates up to 5MHz, well beyond baseband audio bandwidths; however, designers must verify THD+N performance in their specific gain and load configuration.
Is MAX322CSA+ pin-compatible with MAX322ESA+?
Yes, MAX322CSA+ and MAX322ESA+ share identical 8-pin SO package dimensions, pinout, and electrical specifications - differing only in temperature grade (0°C to +70°C vs. −40°C to +85°C). No PCB layout change is required when upgrading from MAX322CSA+ to MAX322ESA+, making them drop-in replacements for extended-temperature deployments.
MAX322CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±2.7V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- 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-SOIC
MAX322CSA+ FAQ
1.How can I place an order for MAX322CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX322CSA+ 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 MAX322CSA+ reliable?
The price and inventory of MAX322CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX322CSA+ is usually 5 days.
3.What payment methods are accepted for MAX322CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX322CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX322CSA+?
MAX322CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX322CSA+ 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 MAX322CSA+?
For technical support, including MAX322CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX322CSA+ requirements.
6.How does Aetrix verify that MAX322CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX322CSA+ 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 MAX322CSA+ meets industry standards.
7.What is the process for return or replacement of MAX322CSA+?
All MAX322CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX322CSA+, 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 MAX322CSA+ part is unused and in its original packaging.
Return procedure for MAX322CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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