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Analog Devices Inc./Maxim Integrated MAX394EWP+T
- Part No.:
- MAX394EWP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX394EWP+T.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,119
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Product details
Overview
MAX394EWP+T from Analog Devices is a precision quad SPDT analog switch optimized for low-voltage, rail-to-rail signal routing in portable and industrial systems. It operates from ±2.7V to ±8V bipolar or +2.7V to +15V single supply, delivers <35Ω max on-resistance with <2Ω channel matching, and features 10pC max charge injection and break-before-make switching (10ns typ). It is widely used in audio signal routing and test equipment where low distortion and high channel isolation are critical.
For engineers reviewing the MAX394EWP+T datasheet, MAX394EWP+T pinout, MAX394EWP+T application, or MAX394EWP+T equivalent, key selection criteria include guaranteed on-resistance flatness (Δ4Ω max), -40°C to +85°C extended temperature operation, TTL/CMOS-compatible logic inputs, and ESD robustness (>2000V).
Technical Context
The MAX394EWP+T integrates four independent CMOS SPDT switches fabricated using low-voltage silicon-gate process, enabling rail-to-rail analog signal handling across full supply range. Its break-before-make architecture prevents signal shorting during transition, with typical tD = 10ns and tON/tOFF < 130ns/75ns under ±5V supplies.
Logic inputs are fully compatible with TTL and CMOS levels across supply voltages: guaranteed 0.8V–2.4V thresholds up to +8V, extending to 0.8V–4V for higher supplies. Input leakage remains ≤±1.0µA, and quiescent current stays below 1µA - critical for battery-powered instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2.7V to ±8V bipolar or +2.7V to +15V single supply - supports wide system voltage flexibility without level-shifting. |
| On-Resistance (max) | 35Ω at ±4.5V - ensures minimal signal attenuation and thermal drift in precision analog paths. |
| On-Resistance Match | <2Ω between channels - enables matched gain/attenuation in multi-channel instrumentation and audio mixing. |
| Charge Injection | <10pC - reduces glitch-induced DC offset in sample-and-hold and multiplexed ADC front-ends. |
| Off-Leakage Current | <2.5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and battery-monitoring circuits. |
| ESD Rating | >2000V per Method 3015.7 - enhances reliability in handheld test gear and field-deployable equipment. |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive cabin applications without derating. |
Pinout & Package
MAX394EWP+T is housed in a 20-pin Wide SO (W26-1) package, RoHS-compliant, with exposed substrate tied to V+. Pin functions are electrically validated per Analog Devices' official pin configuration diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | CMOS/TTL-compatible digital control inputs; drive internal switch gates directly without external buffers. |
| 2, 9, 12, 19 | NO1–NO4 | Normally open analog terminals; connect to COM when corresponding IN = logic high. |
| 3, 8, 13, 18 | COM1–COM4 | Common analog I/O nodes; support bidirectional rail-to-rail signal flow up to V+ and down to V−. |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed analog terminals; connect to COM when corresponding IN = logic low. |
| 5 | V− | Negative power supply rail; must be applied before analog signals to prevent latch-up. |
| 6 | GND | Ground reference for logic and internal bias networks; separate from analog return in mixed-signal layouts. |
| 15 | N.C. | No internal connection - left floating; no PCB trace or thermal pad required. |
| 16 | V+ | Positive power supply rail; substrate tied internally to this pin for ESD protection integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals from V− to V+ - eliminates need for external clamping or level-shifting in ±5V or +3.3V systems. |
| Guaranteed flat on-resistance | Δ4Ω max over full analog range - maintains consistent gain and THD across signal amplitude in audio and sensor paths. |
| Break-before-make switching | 10ns typical delay - prevents momentary short-circuit between NO and NC paths during state transitions. |
| Ultra-low quiescent current | <1µA with all inputs high or low - extends battery life in portable instruments and remote sensors. |
| TTL/CMOS logic compatibility | Validated 0.8V–2.4V input thresholds at V+ ≤ +8V - interoperates directly with microcontrollers and FPGAs without interface logic. |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
|
Use Scenario: Switching line-level stereo signals between multiple DAC outputs and headphone amplifiers in portable media players. IC Role / Device Role / Timing Role: Quad SPDT analog switch managing bidirectional audio paths with minimal crosstalk and zero audible pop. Use Value: 88dBm crosstalk and <10pC charge injection suppress inter-channel interference and DC offset in high-fidelity playback. |
Use Scenario: Routing DUT signals among oscilloscope inputs, function generator outputs, and multimeter channels in automated bench testers. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling fast, repeatable channel selection without signal corruption. Use Value: <2Ω on-resistance matching and Δ4Ω flatness ensure measurement consistency across all 4 switched paths. |
| Heads-Up Display (HUD) Interface | Portable Instrument Signal Conditioning |
|
Use Scenario: Selecting between multiple video sources (e.g., camera feed, navigation overlay, vehicle telemetry) for projection onto windshield optics. IC Role / Device Role / Timing Role: High-isolation analog switch isolating video signal chains to prevent ghosting and timing skew. Use Value: 66dBm off-isolation and <75ns turn-off time preserve video edge integrity and minimize display latency. |
Use Scenario: Configuring gain/attenuation paths and sensor excitation modes in handheld multimeters and environmental data loggers. IC Role / Device Role / Timing Role: Low-leakage, low-power analog switch enabling flexible front-end reconfiguration without draining battery. Use Value: <2.5nA off-leakage at +85°C and <1µA quiescent current sustain >100-hour runtime on coin-cell batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333ACPP+ | Same pinout, but rated only for 0°C to +70°C; on-resistance max = 45Ω; no guaranteed charge injection spec. | Suitable for commercial-grade test fixtures or non-temperature-critical audio gear. | Select when cost sensitivity outweighs extended temp or precision requirements. |
| ADG1414BRUZ | 4-channel SPDT, but uses different pinout (20-pin TSSOP); RON = 1.8Ω typ; requires ≥±4.5V dual or ≥9V single supply. | Better for high-precision, low-RON applications where board layout allows footprint change. | Choose when ultra-low on-resistance and lower THD are mandatory, and redesign is acceptable. |
Compared with MAX333ACPP+, MAX394EWP+T provides extended temperature range and tighter parameter guarantees; compared with ADG1414BRUZ, it offers pin compatibility with legacy Maxim designs and broader supply flexibility, albeit at higher on-resistance.
Availability
MAX394EWP+T is available at Aetrix Electronics and suitable for test equipment, portable instruments, heads-up displays, and audio signal routing requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX394EWP+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 industrial, automotive, communications, and healthcare markets since 1965.
The MAX394 series belongs to Maxim's precision analog switch product line, designed specifically for low-distortion, low-leakage, rail-to-rail signal routing in portable and harsh-environment instrumentation.
FAQ
What is the maximum supply voltage rating for MAX394EWP+T?
The absolute maximum rating for MAX394EWP+T is V+ to V− ≤ 17V, with individual rails limited to V+ ≤ +17V and V− ≥ −17V. Operation beyond these limits risks permanent damage. For reliable long-term use, Analog Devices specifies recommended operating ranges of ±2.7V to ±8V (dual) or +2.7V to +15V (single), which MAX394EWP+T meets with margin.
Does MAX394EWP+T support rail-to-rail analog signal switching?
Yes, MAX394EWP+T supports true rail-to-rail analog signal handling: analog signals on COM, NO, and NC pins may swing from V− to V+ without damage or performance degradation. This capability is explicitly guaranteed in the datasheet and verified across temperature and supply conditions - a core design feature of the MAX394EWP+T.
Is MAX394EWP+T pin-compatible with other variants in the MAX394 family?
Yes, MAX394EWP+T shares identical 20-pin Wide SO (W26-1) pinout and functionality with MAX394EWP, MAX394EWP+T, and MAX394CAP+T. All share the same pin configuration, electrical behavior, and logic interface - only temperature grade and RoHS status differ. No PCB changes are needed when substituting within the E-grade Wide SO variants.
What is the guaranteed charge injection specification for MAX394EWP+T?
MAX394EWP+T guarantees charge injection ≤10pC, measured under CL = 1.0nF, VGEN = 0V, RGEN = 0Ω per Figure 6 of the datasheet. This value is tested and specified across the full −40°C to +85°C operating range, making it suitable for precision sample-and-hold and multiplexed ADC applications where low glitch energy is essential.
Can MAX394EWP+T operate from a single +3.3V supply?
Yes, MAX394EWP+T is fully specified for single +3.3V operation (V+ = 3.0V to 3.6V, V− = 0V). At +3.3V, typical on-resistance is 185Ω (max 250Ω), turn-on time is 400ns, and logic inputs remain compatible with standard 3.3V CMOS levels (0.8V–2.4V). All key parameters - including leakage and charge injection - retain their guaranteed values under this condition.
MAX394EWP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 15V
- Voltage - Supply, Dual (V±):
- ±2.7V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 130ns, 75ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 200pA
- Crosstalk:
- -88dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MAX394EWP+T FAQ
1.How can I place an order for MAX394EWP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394EWP+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 MAX394EWP+T reliable?
The price and inventory of MAX394EWP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394EWP+T is usually 5 days.
3.What payment methods are accepted for MAX394EWP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394EWP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394EWP+T?
MAX394EWP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394EWP+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 MAX394EWP+T?
For technical support, including MAX394EWP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394EWP+T requirements.
6.How does Aetrix verify that MAX394EWP+T is sourced from the original manufacturer or authorized distributors?
All MAX394EWP+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 MAX394EWP+T meets industry standards.
7.What is the process for return or replacement of MAX394EWP+T?
All MAX394EWP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX394EWP+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 MAX394EWP+T part is unused and in its original packaging.
Return procedure for MAX394EWP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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