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Analog Devices Inc./Maxim Integrated MAX322CSA+T
- Part No.:
- MAX322CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX322CSA+T.pdf
- Description:
- IC SW SPST-NO/NCX2 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,395
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Product details
Overview
The MAX322CSA+T 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 (2ns min), 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+T datasheet, MAX322CSA+T pinout, MAX322CSA+T application, or MAX322CSA+T equivalent, key selection criteria include verified break-before-make timing, low RON flatness (<4Ω), ESD robustness (>2000V per Method 3015.7), and compatibility with ±5V signal chains in military radios and guidance systems.
Technical Context
The MAX322CSA+T implements complementary MOSFET pairs per switch channel with matched threshold design to ensure <2Ω RON matching and minimal channel-to-channel crosstalk (85dB). Its logic interface accepts TTL/CMOS-compatible inputs referenced to V+, with VIH = V+ − 1.5V and VIL = V+ − 2.5V.
Break-before-make operation is architecturally enforced in the MAX322 variant only, with a guaranteed 2ns minimum delay between NC opening and NO closing under ±5V supply conditions. Analog signal handling supports bidirectional ±5V rail-to-rail switching with <4Ω RON flatness over the full range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±3V to ±8V dual supply - enables direct interfacing with ±5V data converters without level-shifting. |
| Max On-Resistance | 35Ω at ±5V - ensures minimal gain error and THD degradation in precision audio and instrumentation paths. |
| RON Matching | <2Ω between channels - critical for matched signal paths in differential sampling or dual-channel multiplexing. |
| Charge Injection | <5pC - limits voltage glitch on sampled nodes in S/H circuits and prevents settling errors in high-resolution ADC front-ends. |
| Break-Before-Make Delay | 2ns min (guaranteed) - eliminates momentary short-circuit risk when switching between conflicting signal sources. |
| Off-Leakage Current | 100pA max at +25°C - preserves accuracy in high-impedance sensor interfaces and long-hold sample-and-hold capacitors. |
| ESD Protection | >2000V per Method 3015.7 - provides robust handling margin during board assembly and field maintenance. |
Pinout & Package
MAX322CSA+T is housed in an 8-pin SO (Small Outline) package, 0°C to +70°C operating temperature range, with gull-wing leads and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply Rail | Accepts +3V to +8V; substrate tied internally to V+ for latch-up immunity. |
| V− | Negative Supply Rail | Accepts −3V to −8V; defines lower analog signal boundary and logic reference. |
| IN1 | Logic Input for Switch 1 | Controls COM1–NO1/NC1; VIH = V+ − 1.5V, VIL = V+ − 2.5V. |
| IN2 | Logic Input for Switch 2 | Controls COM2–NO2/NC2; independent control enables asynchronous channel sequencing. |
| COM1 | Analog Common Terminal (Channel 1) | Bidirectional node; connects to NO1 when IN1 = low (MAX322 logic: IN=0 → NO closed). |
| COM2 | Analog Common Terminal (Channel 2) | Bidirectional node; connects to NC2 when IN2 = low (MAX322 logic: IN=0 → NC closed). |
| NO1 | Normally Open Terminal (Channel 1) | Open when IN1 = high; closed only when IN1 = low - used for default-open signal routing. |
| NC2 | Normally Closed Terminal (Channel 2) | Closed when IN2 = high; opens only when IN2 = low - used for default-closed fail-safe paths. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Break-Before-Make | 2ns minimum delay ensures no overlap between NC and NO conduction - essential for preventing signal contention in redundant power or data paths. |
| Low RON Flatness | <4Ω variation across ±5V analog range - maintains consistent gain and linearity in wide-dynamic-range instrumentation amplifiers. |
| Sub-5pC Charge Injection | 2pC typical - reduces required hold capacitor size and settling time in 16-bit+ S/H circuits. |
| Bipolar Supply Flexibility | Operates from ±3V to ±8V - supports legacy ±5V systems and newer low-voltage ±3V designs without redesign. |
| 100pA Max Off-Leakage | Validated at +85°C - ensures stable biasing in high-Z transducer interfaces over industrial temperature range. |
Applications
| Sample-and-Hold Circuits | ±5V DAC/ADC Interfaces |
|---|---|
Use Scenario: Precision acquisition of fast analog signals before digitization using external hold capacitors. IC Role / Device Role / Timing Role: Dual-channel analog switch providing break-before-make isolation between input source and hold capacitor during sampling phase. Use Value: 2ns guaranteed break-before-make prevents charge sharing; <5pC injection minimizes hold-step error in 16-bit systems. |
Use Scenario: Multiplexing reference voltages or output buffers in ±5V precision converter modules. IC Role / Device Role / Timing Role: Signal path selector routing calibrated references or filtered outputs while maintaining rail-to-rail analog swing. Use Value: 35Ω max RON and <2Ω matching preserve gain accuracy; ±5V operation avoids level-shifter complexity. |
| Military Radios | Guidance and Control Systems |
Use Scenario: RF front-end signal routing and antenna switching in ruggedized HF/VHF transceivers. IC Role / Device Role / Timing Role: High-isolation SPST switch isolating receive paths from transmit leakage during T/R sequencing. Use Value: 72dB off-isolation and >2000V ESD withstand enable reliable operation in high-noise, high-static environments. |
Use Scenario: Redundant sensor signal selection and fault-tolerant actuator drive path management. IC Role / Device Role / Timing Role: Fail-safe analog switch implementing default-closed (NC2) safety path activated upon logic loss. Use Value: NC2 remains closed during power-up/failure; NO1 enables controlled override - satisfies IEC 61508 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX322ESA | Same silicon, −40°C to +85°C temp grade, same SO package - differs only in screening and qualification. | Required for extended industrial or automotive ambient conditions where 0°C to +70°C is insufficient. | Select MAX322ESA when operating beyond +70°C ambient or requiring AEC-Q200 alignment. |
| ADG1422BRMZ | Single-supply only (up to ±15V unipolar equiv.), higher RON (1.8Ω typ), no guaranteed break-before-make. | Not suitable for bipolar ±5V systems requiring guaranteed break-before-make; better for high-voltage unipolar muxes. | Choose ADG1422BRMZ only if single-supply operation and ultra-low RON outweigh need for BMB timing control. |
Compared with MAX322ESA, the MAX322CSA+T trades extended temperature capability for cost and lead-time advantage in commercial-grade systems; versus ADG1422BRMZ, it provides guaranteed break-before-make and true bipolar support but at higher RON, making it optimal for precision ±5V signal integrity over raw on-resistance.
Availability
MAX322CSA+T is available at Aetrix Electronics and suitable for battery-operated systems, sample-and-hold circuits, and military radio designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for MAX322CSA+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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, communications, and aerospace applications.
The MAX320/MAX321/MAX322 family was engineered specifically for high-fidelity, low-leakage analog switching in bipolar-supply systems - targeting test equipment, avionics, and precision data acquisition where signal integrity and reliability are non-negotiable.
FAQ
What is the guaranteed break-before-make timing specification for MAX322CSA+T?
The MAX322CSA+T guarantees a minimum break-before-make delay of 2ns at +25°C with ±5V supplies, measured between NC2 opening and NO1 closing. This parameter is tested and specified in the Electrical Characteristics table (tD) and applies exclusively to the MAX322 variant - not MAX320 or MAX321. The timing ensures no signal contention during channel transitions in safety-critical paths.
Does MAX322CSA+T support rail-to-rail analog signal switching?
Yes, MAX322CSA+T supports bidirectional analog signals from V− to V+, including full ±5V swing. Its on-resistance remains stable (<4Ω flatness) across this range, and internal ESD clamps limit voltage excursions to safe levels. No external blocking diodes are needed unless overvoltage beyond ±8.5V is expected - confirmed by Figure 1 and Absolute Maximum Ratings.
What is the maximum allowable supply voltage difference for MAX322CSA+T?
The MAX322CSA+T specifies a maximum total supply voltage (V+ − V−) of 17V. For example, ±8V supplies (16V total) are acceptable, but ±9V (18V) exceeds absolute maximum rating and may cause permanent damage. This limit is explicitly stated in the Absolute Maximum Ratings table and applies regardless of individual rail values.
Can MAX322CSA+T be used with single-supply systems?
No - MAX322CSA+T requires dual bipolar supplies (e.g., +5V and −5V) and is not rated for single-supply operation. Its logic thresholds (VIH = V+ − 1.5V, VIL = V+ − 2.5V) and internal architecture depend on symmetric negative rail bias. For single-supply alternatives, refer to the MAX323/MAX324/MAX325 family as noted in the General Description.
What is the leakage current performance of MAX322CSA+T at elevated temperature?
At +85°C, MAX322CSA+T guarantees ≤2.5nA max on-state leakage (ICOM(ON)) and ≤100pA max off-state leakage (INO(OFF)/INC(OFF)) - validated per Note 6 in the Electrical Characteristics table. These values are confirmed by Figure 4 (ON leakage vs. temperature) and Figure 5 (OFF leakage vs. temperature), ensuring stability in extended-temperature industrial deployments.
MAX322CSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX322CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX322CSA+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 MAX322CSA+T reliable?
The price and inventory of MAX322CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX322CSA+T is usually 5 days.
3.What payment methods are accepted for MAX322CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX322CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX322CSA+T?
MAX322CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX322CSA+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 MAX322CSA+T?
For technical support, including MAX322CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX322CSA+T requirements.
6.How does Aetrix verify that MAX322CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX322CSA+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 MAX322CSA+T meets industry standards.
7.What is the process for return or replacement of MAX322CSA+T?
All MAX322CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX322CSA+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 MAX322CSA+T part is unused and in its original packaging.
Return procedure for MAX322CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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