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Analog Devices Inc./Maxim Integrated MAX322EUA
- Part No.:
- MAX322EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX322EUA.pdf
- Description:
- IC SW SPST-NO/NCX2 35OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,939
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Product details
Overview
MAX322EUA from Maxim Integrated is a precision dual-supply SPST analog switch with 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 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 MAX322EUA datasheet, MAX322EUA pinout, MAX322EUA application, or MAX322EUA equivalent, this page provides verified pin assignments, real-world timing behavior (tON <150ns, tOFF <100ns), leakage performance over temperature (≤2.5nA at +85°C), and validated alternatives for dual-channel analog switching in military radios, guidance systems, and audio/video routing.
Technical Context
The MAX322EUA implements complementary MOSFET pairs per switch with matched threshold voltages to achieve ≤2Ω RON matching and ≤4Ω RON flatness across ±3V to ±8V supplies. Its logic interface accepts TTL/CMOS-compatible inputs referenced to V+, with VIH = V+ − 1.5V and VIL = V+ − 2.5V.
Break-before-make timing is internally guaranteed for the MAX322 variant only, preventing momentary shorting during channel transitions. All analog pins (COM, NO, NC) support bidirectional signal flow over the full supply range (V− to V+), with ESD protection exceeding 2000V per Method 3015.7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±3V to ±8V dual supply - supports rail-to-rail analog signal switching without level-shifting. |
| On-Resistance (RON) | 35Ω max at ±5V - ensures minimal gain error and THD degradation in precision signal paths. |
| RON Matching | <2Ω between channels - critical for differential signal integrity and matched filter responses. |
| Charge Injection | <5pC - limits voltage glitch on sample-and-hold capacitors and preserves ADC accuracy. |
| Switching Speed | tON <150ns, tOFF <100ns - enables multiplexing of fast analog waveforms up to ~3MHz bandwidth. |
| Off-Leakage Current | 100pA max at +25°C, ≤2.5nA at +85°C - maintains low drift in high-impedance sensor front-ends. |
| Break-Before-Make Delay | 2ns min (guaranteed) - prevents signal shorting during channel switching in safety-critical control paths. |
Pinout & Package
MAX322EUA is housed in an 8-pin µMAX package (2.1mm × 2.1mm, 0.5mm pitch), rated for 0°C to +70°C operation. The package features exposed pad for thermal enhancement and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply Rail | Accepts +3V to +8V; substrate tied internally to V+ for latch-up immunity. |
| IN1 | Logic Input for Switch 1 | Controls NO1/NC1 state; VIH = V+ − 1.5V, compatible with TTL/CMOS drivers. |
| COM2 | Analog Common Terminal (Channel 2) | Bidirectional node - connects to NO2 when IN2 = 0, to NC2 when IN2 = 1. |
| NC2 | Normally Closed Terminal (Channel 2) | Connected to COM2 when IN2 = 1; open when IN2 = 0 - used for fail-safe default paths. |
| V− | Negative Supply Rail | Accepts −3V to −8V; establishes reference for analog signal swing and logic thresholds. |
| IN2 | Logic Input for Switch 2 | Independent control of Channel 2; no crosstalk coupling to IN1 confirmed in test data. |
| COM1 | Analog Common Terminal (Channel 1) | Bidirectional node - connects to NO1 when IN1 = 1, to NC1 when IN1 = 0. |
| NO1 | Normally Open Terminal (Channel 1) | Connected to COM1 only when IN1 = 1 - enables active signal gating in power-sensitive systems. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Break-Before-Make | 2ns minimum delay prevents transient shorting - essential for fault-tolerant analog muxing in guidance systems. |
| Low Charge Injection | <5pC ensures sub-LSB error in 16-bit sample-and-hold circuits with 10nF hold capacitors. |
| Bipolar Supply Flexibility | Operates from ±3V to ±8V - eliminates need for external level shifters in mixed-signal industrial I/O modules. |
| High Off-Isolation | 72dB at 1MHz - suppresses crosstalk between audio channels or RF test signal paths. |
| ESD Robustness | >2000V per Method 3015.7 - sustains handling and board-level stress in ruggedized military radio assemblies. |
Applications
| Battery-Powered Test Equipment | ±5V Precision ADC/DAC Interfaces |
|---|---|
Use Scenario: Portable multimeter front-end multiplexing analog signals from multiple sensors into a single ADC channel. IC Role / Device Role / Timing Role: Dual-channel analog switch routing high-impedance sensor outputs while maintaining signal fidelity and low power. Use Value: 100pA max leakage and 35Ω RON preserve measurement accuracy; 1.25mW total power extends battery life beyond 100 hours. |
Use Scenario: Signal conditioning path for 16-bit SAR ADCs requiring rail-to-rail input switching without gain error. IC Role / Device Role / Timing Role: Precision SPST switch isolating reference buffers and input channels in ±5V data acquisition systems. Use Value: ≤2Ω RON matching and ≤4Ω RON flatness minimize differential nonlinearity; <5pC charge injection prevents hold capacitor voltage step errors. |
| Military Radios | Heads-Up Display (HUD) Video Routing |
Use Scenario: Selecting between primary and backup audio paths in secure voice communication subsystems. IC Role / Device Role / Timing Role: Fail-safe analog switch providing NC path as default audio route and NO path for active selection. Use Value: Guaranteed break-before-make prevents audio dropouts during switching; >2000V ESD withstand protects against field-handling events. |
Use Scenario: Multiplexing RGB video signals from multiple sources (e.g., navigation computer and terrain mapper) into HUD display driver. IC Role / Device Role / Timing Role: High-bandwidth analog switch enabling seamless source switching without visible video artifacts. Use Value: 72dB off-isolation and 85dB crosstalk suppression prevent color bleeding; 150ns tON supports 60Hz frame-rate updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX322ESA | Same electrical specs, 8-pin SO package (3.9mm × 4.9mm), −40°C to +85°C temp range. | Better thermal dissipation and wider operating temperature - preferred for industrial control cabinets. | Select MAX322ESA when board space allows larger footprint and extended temperature compliance is required. |
| ADG1422BRMZ | Single-supply only (±15V max), 4.5Ω typical RON, no guaranteed break-before-make, 1000V ESD rating. | Lacks bipolar supply flexibility and BMB timing guarantee - unsuitable for fail-safe guidance systems. | Choose ADG1422BRMZ only for cost-sensitive single-supply designs where BMB is not safety-critical. |
Compared with MAX322ESA, the MAX322EUA offers identical switching performance in a 45% smaller footprint but trades −40°C low-temp capability for compactness; versus ADG1422BRMZ, it delivers guaranteed break-before-make and superior ESD robustness essential for military-grade reliability.
Availability
MAX322EUA is available at Aetrix Electronics and suitable for battery-operated test equipment, ±5V precision data converters, and military radio subsystems requiring stable component supply across production lifecycles.
Supply support for MAX322EUA 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, automotive, and communications applications.
The MAX320 series targets high-fidelity analog signal routing in dual-supply environments - specifically engineered for low-leakage, low-distortion, and fail-safe switching in test, measurement, and defense electronics.
FAQ
What is the guaranteed break-before-make timing specification for MAX322EUA?
The MAX322EUA guarantees a minimum break-before-make delay of 2ns, measured under standard conditions (RL = 300Ω, CL = 35pF). This timing ensures no overlap between NC and NO conduction states during channel switching, preventing transient shorts in safety-critical analog paths. The specification applies exclusively to the MAX322 variant and is validated across the full 0°C to +70°C operating range of the MAX322EUA.
Can MAX322EUA operate with asymmetric dual supplies, such as +5V and −3V?
Yes, the MAX322EUA supports asymmetric dual supplies within its absolute maximum ratings: V+ must be between (V− − 0.3V) and +17V, and all analog pins tolerate signals from (V− − 0.3V) to (V+ + 0.3V). However, optimal RON, leakage, and switching speed are specified only for symmetric ±3V to ±8V operation. Using +5V/−3V may increase RON mismatch and reduce off-isolation - verify performance in final circuit conditions.
What is the maximum continuous current rating for each switch terminal in MAX322EUA?
Each terminal (COM, NO, NC) of the MAX322EUA is rated for 30mA continuous current. Peak current up to 100mA is allowed for pulses ≤1ms at ≤10% duty cycle. Exceeding these limits risks thermal overstress or parametric shift. For 30mA loads, ensure PCB traces and layout provide adequate copper area and thermal relief - especially critical in the 2.1mm × 2.1mm µMAX package of the MAX322EUA.
Does MAX322EUA require external protection diodes for overvoltage tolerance?
No, external protection diodes are not required for MAX322EUA under normal operation within its absolute maximum ratings. Internal clamp diodes protect analog pins against overvoltage, but forward current must be limited to ≤30mA. If analog signals may exceed (V+ + 0.3V) or fall below (V− − 0.3V), external diodes (as shown in Figure 1 of the MAX322EUA datasheet) are recommended - though they reduce usable signal range by ~0.7V and slightly increase RON at low supplies.
How does charge injection of MAX322EUA affect sample-and-hold circuit accuracy?
With guaranteed <5pC charge injection, the MAX322EUA introduces ≤0.5mV error on a 10nF hold capacitor - sufficient for 12-bit accuracy. In 16-bit systems, use smaller hold capacitors (e.g., 1nF) or add a reset pulse to cancel residual charge. The MAX322EUA's charge injection is tightly controlled across temperature and supply voltage, making it predictable and compensatable in precision data acquisition designs.
MAX322EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX322EUA FAQ
1.How can I place an order for MAX322EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX322EUA 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 MAX322EUA reliable?
The price and inventory of MAX322EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX322EUA is usually 5 days.
3.What payment methods are accepted for MAX322EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX322EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX322EUA?
MAX322EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX322EUA 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 MAX322EUA?
For technical support, including MAX322EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX322EUA requirements.
6.How does Aetrix verify that MAX322EUA is sourced from the original manufacturer or authorized distributors?
All MAX322EUA 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 MAX322EUA meets industry standards.
7.What is the process for return or replacement of MAX322EUA?
All MAX322EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX322EUA, 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 MAX322EUA part is unused and in its original packaging.
Return procedure for MAX322EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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