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Analog Devices Inc./Maxim Integrated MAX394EWP+
- Part No.:
- MAX394EWP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX394EWP+.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,263
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Product details
Overview
MAX394EWP+ 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, <4Ω on-resistance flatness, and break-before-make switching (10ns typ), enabling high-fidelity audio and test equipment signal paths.
For engineers reviewing the MAX394EWP+ datasheet, MAX394EWP+ pinout, MAX394EWP+ application, or MAX394EWP+ equivalent, key selection criteria include guaranteed charge injection (<10pC), off-leakage <2.5nA at +85°C, ESD >2000V, TTL/CMOS logic compatibility, and -40°C to +85°C extended temperature operation in 20-pin wide SO package.
Technical Context
The MAX394EWP+ integrates four independent CMOS SPDT switches fabricated using low-voltage silicon-gate process, supporting rail-to-rail analog signal handling across full supply range. Its architecture guarantees matched on-resistance between channels and flat on-resistance over signal swing-critical for precision multiplexing and gain-switching applications.
Break-before-make timing (10ns typical) prevents signal shorting during state transitions, while ultra-low quiescent current (<1μA) and charge injection (<10pC) ensure minimal disturbance in battery-powered instrumentation and high-accuracy data acquisition front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | <35Ω at ±4.5V supplies - ensures minimal signal attenuation and gain error in precision analog paths |
| On-Resistance Match | <2Ω between channels - enables accurate differential signal routing and matched gain stages |
| On-Resistance Flatness | Δ4Ω max over analog range - maintains consistent channel performance across full input voltage swing |
| Charge Injection | <10pC - reduces settling error and glitch energy in sample-and-hold and ADC driver circuits |
| Off-Leakage Current | <2.5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and integrator applications |
| ESD Rating | >2000V per Method 3015.7 - supports robust handling in manufacturing and field-deployed equipment |
| Supply Range | ±2.7V to ±8V or +2.7V to +15V - enables flexible power architecture in mixed-signal systems |
Pinout & Package
MAX394EWP+ is housed in a 20-pin wide SO (W26-1) package with exposed substrate tied to V+, supporting surface-mount assembly and thermal dissipation up to 696mW at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | TTL/CMOS-compatible digital control inputs; accept 0.8V–2.4V logic thresholds up to +8V supply |
| 2, 9, 12, 19 | NO1–NO4 | Normally open switch terminals; connect to COM when corresponding IN = logic high |
| 3, 8, 13, 18 | COM1–COM4 | Common analog poles; handle rail-to-rail signals from V− to V+ |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed switch terminals; connect to COM when corresponding IN = logic low |
| 5 | V− | Negative supply rail; must be applied before analog signals in dual-supply sequencing |
| 6 | GND | Ground reference; used as return path for logic and internal bias networks |
| 15 | N.C. | No internal connection; left unconnected on PCB |
| 16 | V+ | Positive supply rail; substrate tied internally to this pin for ESD robustness |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals spanning V− to V+ without clipping or distortion |
| Break-before-make switching | 10ns typical delay prevents momentary short-circuit between NO and NC paths |
| Guaranteed low charge injection | <10pC ensures sub-LSB error in 16-bit+ sampling systems with 1nF load |
| Extended temperature grade | -40°C to +85°C operation validated across all electrical specs for industrial reliability |
| Pin compatibility | Direct replacement for MAX333/MAX333A in existing layouts requiring no PCB changes |
Applications
| Audio Signal Routing | Portable Test Equipment |
|---|---|
Use Scenario: Switching between microphone inputs, headphone outputs, and line-level sources in handheld audio analyzers. IC Role / Device Role / Timing Role: Quad SPDT analog switch managing bidirectional AC-coupled audio paths with minimal crosstalk and THD degradation. Use Value: <35Ω on-resistance and <88dB crosstalk at 1MHz preserve SNR >95dB; <10pC charge injection avoids pop/click artifacts during channel selection. |
Use Scenario: Multiplexing DMM inputs, oscilloscope probe channels, and calibration reference paths in battery-powered bench tools. IC Role / Device Role / Timing Role: Precision analog switch enabling automatic range selection and signal path isolation in multichannel measurement front-ends. Use Value: <2Ω channel matching ensures consistent gain scaling across ranges; <2.5nA leakage at +85°C prevents drift in high-Z voltage measurement modes. |
| Heads-Up Displays (HUD) | Set-Top Box Video Switching |
Use Scenario: Routing RGB video, sync signals, and brightness control voltages in automotive HUD projection units. IC Role / Device Role / Timing Role: Low-glitch analog switch handling DC-coupled video and analog control lines with fast turn-on/turn-off times. Use Value: 130ns max turn-on time synchronizes with display frame rates; rail-to-rail capability supports 0–3.3V and ±5V video signal levels without level shifters. |
Use Scenario: Selecting between HDMI, component video, and composite inputs in consumer STB AV processing modules. IC Role / Device Role / Timing Role: High-isolation SPDT switch isolating unused video paths to prevent ghosting and impedance mismatch. Use Value: 66dB off-isolation at 1MHz suppresses interference between adjacent video channels; ESD >2000V withstands handling in high-volume assembly. |
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 |
|---|---|---|---|
| MAX333AEPD+ | Same pinout, identical 20-pin PDIP/SO footprint; slightly higher RON (45Ω max) and wider temp range (0°C to +70°C only) | Limited to commercial temperature grade; less suitable for automotive or industrial environments requiring -40°C startup | Select MAX333AEPD+ only for cost-sensitive commercial designs where extended temperature is not required. |
| ADG1414BRUZ | 4-channel SPDT, 12V max supply, 1.8Ω typical RON, but requires ≥3V logic high and lacks guaranteed charge injection spec | Better on-resistance but incompatible TTL logic interface; unsuitable for legacy 0.8V–2.4V control systems | Choose ADG1414BRUZ only when upgrading logic voltage and prioritizing ultra-low RON over backward compatibility. |
Compared with MAX333AEPD+, MAX394EWP+ provides guaranteed -40°C to +85°C operation and tighter on-resistance matching; versus ADG1414BRUZ, it offers native TTL/CMOS compatibility and documented charge injection-making it optimal for retrofitting legacy test and audio systems.
Availability
MAX394EWP+ is available at Aetrix Electronics and suitable for portable instruments, communications systems, and heads-up displays requiring stable component supply across extended temperature and long production lifecycles.
Supply support for MAX394EWP+ 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 technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX394EWP+ belongs to Analog Devices' precision analog switch product line, engineered for low-distortion, low-leakage signal routing in battery-constrained and thermally demanding applications.
FAQ
What is the maximum supply voltage rating for MAX394EWP+?
The MAX394EWP+ supports absolute maximum ratings of V+ to V− ≤ 17V, with V+ ranging from -0.3V to +17V and V− from +0.3V to -17V. For reliable operation, use within specified ranges: ±2.7V to ±8V (bipolar) or +2.7V to +15V (single supply). Exceeding these may cause permanent damage, as confirmed in the Absolute Maximum Ratings table of the official datasheet.
Does MAX394EWP+ support rail-to-rail analog signal switching?
Yes, MAX394EWP+ supports rail-to-rail analog signal handling: switched signals on COM, NO, and NC pins can range continuously from V− to V+ without damage or performance degradation. This is explicitly guaranteed in the Electrical Characteristics tables under "Analog Signal Range" and validated across temperature for both dual- and single-supply configurations.
Is MAX394EWP+ pin-compatible with MAX333 or MAX333A?
Yes, MAX394EWP+ is pin-compatible with MAX333 and MAX333A, sharing identical 20-pin wide SO (W26-1) and DIP footprints. The Pin Configuration section confirms matching IN/NO/COM/NC assignments and power pin locations, enabling drop-in replacement in existing designs without layout modification.
What is the guaranteed charge injection specification for MAX394EWP+?
MAX394EWP+ guarantees charge injection of <10pC, measured under CL = 1.0nF, VGEN = 0V, RGEN = 0Ω conditions at +25°C. This value is tested and specified across the full -40°C to +85°C operating range, ensuring predictable settling behavior in sample-and-hold and precision multiplexer applications.
How does the on-resistance matching specification apply to MAX394EWP+?
MAX394EWP+ guarantees on-resistance matching of <2Ω between any two channels at +25°C, and <4Ω over the full -40°C to +85°C temperature range. This ΔRON specification is measured with VNC or VNO = ±3V, ICOM = 10mA, and V+ = 5V/V− = -5V, directly supporting matched gain and balanced differential signal routing.
MAX394EWP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX394EWP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394EWP+ 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+ reliable?
The price and inventory of MAX394EWP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394EWP+ is usually 5 days.
3.What payment methods are accepted for MAX394EWP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394EWP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394EWP+?
MAX394EWP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394EWP+ 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+?
For technical support, including MAX394EWP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394EWP+ requirements.
6.How does Aetrix verify that MAX394EWP+ is sourced from the original manufacturer or authorized distributors?
All MAX394EWP+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX394EWP+?
All MAX394EWP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX394EWP+, 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+ part is unused and in its original packaging.
Return procedure for MAX394EWP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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