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Analog Devices Inc./Maxim Integrated MAX394EUP+
- Part No.:
- MAX394EUP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX394EUP+.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,277
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Product details
Overview
MAX394EUP+ 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 guarantees break-before-make switching (10ns typ) and <10pC charge injection. It is used in audio signal routing, test equipment, and heads-up displays where low distortion and minimal signal corruption are critical.
For engineers reviewing the MAX394EUP+ datasheet, MAX394EUP+ pinout, MAX394EUP+ application, or MAX394EUP+ equivalent, key selection criteria include guaranteed on-resistance flatness (Δ4Ω max), -40°C to +85°C extended temperature operation, TSSOP-20 packaging, and TTL/CMOS-compatible logic inputs with rail-to-rail analog handling capability.
Technical Context
The MAX394EUP+ integrates four independent CMOS SPDT switches fabricated using low-voltage silicon-gate process technology. Its architecture ensures matched on-resistance across channels and flat conduction over the full analog signal range (V− to V+), enabling high-fidelity signal switching without gain variation.
It features internal ESD protection (>2000V per Method 3015.7), break-before-make timing control (2–20ns), and logic inputs compatible with TTL/CMOS thresholds-guaranteed at +0.8V to +2.4V for supplies ≤+8V and typically +0.8V to +4V for higher supplies. All analog pins tolerate signals beyond rails via clamping diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (max) | 35Ω - Ensures minimal insertion loss and voltage drop in signal paths up to ±8V or +15V. |
| On-resistance match | <2Ω - Enables precise gain-matching across channels in multi-path instrumentation or audio summing. |
| Charge injection | <10pC - Reduces glitch-induced settling errors in sample-and-hold or multiplexed ADC front-ends. |
| Break-before-make delay | 10ns typical - Prevents momentary shorting between NC and NO paths during state transitions. |
| Supply range | ±2.7V to ±8V or +2.7V to +15V - Supports both dual-rail precision systems and single-supply battery-powered designs. |
| Off-leakage (85°C) | <2.5nA - Maintains signal integrity in high-impedance sensor interfaces and low-power standby modes. |
| Logic compatibility | TTL/CMOS - Interfaces directly with microcontrollers and FPGAs without level-shifting circuitry. |
Pinout & Package
MAX394EUP+ is housed in a 20-pin TSSOP package (U20-2), 4.4mm × 6.5mm body, 0.65mm pitch, RoHS-compliant, with exposed substrate tied to V+ for thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Active-high digital control inputs; drive corresponding SPDT switch state (NO or NC). |
| 2, 9, 12, 19 | NO1–NO4 | Normally open analog terminals; connect to COM when IN = high. |
| 3, 8, 13, 18 | COM1–COM4 | Common analog I/O nodes; bidirectional signal path shared between NO and NC. |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed analog terminals; connect to COM when IN = low. |
| 5 | V− | Negative power supply rail; required for bipolar operation or referenced ground in single-supply mode. |
| 6 | GND | Ground reference; decoupling capacitor placement critical for dynamic performance. |
| 15 | N.C. | No internal connection; must be left floating or grounded per layout best practice. |
| 16 | V+ | Positive power supply rail; powers internal logic and switch driver stages. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals spanning V− to V+, eliminating clipping in wide-dynamic-range applications. |
| Guaranteed on-resistance flatness | Δ4Ω max over full analog range - preserves linearity in precision gain-switching and calibration circuits. |
| Ultra-low quiescent current | <1μA - Enables always-on signal routing in battery-critical portable instruments and IoT edge sensors. |
| ESD robustness | >2000V HBM - Reduces field failure risk in manufacturing, handling, and end-equipment integration. |
| Pin compatibility | Direct replacement for MAX333/MAX333A - simplifies legacy design upgrades without PCB rework. |
Applications
| Test Equipment | Audio Signal Routing |
|---|---|
Use Scenario: Automated test system switching between DUT signal sources and measurement instruments. IC Role / Device Role / Timing Role: Quad SPDT analog switch routing calibrated reference signals and sensor outputs to multichannel digitizers. Use Value: <35Ω on-resistance and <2Ω channel matching ensure consistent signal amplitude and phase across all test paths. | Use Scenario: Multi-source audio mixer in professional audio interface or studio monitor controller. IC Role / Device Role / Timing Role: Low-distortion analog switch selecting between mic preamp outputs, line-level inputs, and headphone DAC paths. Use Value: <10pC charge injection prevents audible pop/click artifacts during real-time source switching. |
| Heads-Up Displays | Portable Instruments |
Use Scenario: Optical projection unit integrating video, navigation, and warning overlays onto vehicle windshield. IC Role / Device Role / Timing Role: Signal selector routing RGB video, sync, and telemetry data between display controller and optical modulator. Use Value: Break-before-make timing (10ns typ) avoids transient shorts that could corrupt pixel timing or induce display glitches. | Use Scenario: Handheld multimeter or oscilloscope probe multiplexer managing multiple input ranges and attenuation paths. IC Role / Device Role / Timing Role: Precision analog switch enabling auto-ranging and signal conditioning before ADC sampling. Use Value: Guaranteed on-resistance flatness (Δ4Ω max) maintains accuracy across full input voltage range without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333AEPP+ | Same quad SPDT topology, but rated only for 0°C to +70°C; 20-pin PDIP package; slightly higher on-resistance (45Ω max). | Targeted at commercial-grade benchtop equipment, not extended-temperature industrial or automotive environments. | Select when cost-sensitive, non-extended-temp applications allow larger DIP footprint and relaxed RON tolerance. |
| ADG1414BRUZ | Quad SPDT with lower on-resistance (1.8Ω typ), but requires ≥±4.5V dual supply or ≥9V single supply; 20-pin TSSOP. | Suitable for high-precision, low-noise instrumentation where ultra-low RON outweighs supply flexibility. | Choose when signal path resistance must be minimized and higher supply voltages are available. |
Compared with MAX333AEPP+, MAX394EUP+ offers extended temperature support and tighter on-resistance matching; compared with ADG1414BRUZ, it trades lower RON for broader supply range and lower charge injection-making it preferable for battery-powered, wide-signal-range, and mixed-voltage systems.
Availability
MAX394EUP+ is available at Aetrix Electronics and suitable for test equipment, audio routing systems, heads-up displays, and portable instruments requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX394EUP+ 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 precision instrumentation, communications, and industrial markets.
The MAX394EUP+ belongs to Analog Devices' precision analog switch product line, engineered for low-distortion, rail-to-rail signal routing in portable, test, and display systems demanding extended temperature operation and guaranteed parametric performance.
FAQ
What is the maximum supply voltage rating for MAX394EUP+?
The MAX394EUP+ supports a maximum total supply voltage of 17V (V+ to V−), with absolute maximum ratings of V+ = −0.3V to +17V and V− = +0.3V to −17V. For reliable operation, bipolar supplies must stay within ±2.7V to ±8V, and single supplies within +2.7V to +15V. Exceeding these limits risks permanent damage, even if the V+–V− differential remains ≤17V.
Does MAX394EUP+ support rail-to-rail analog signal switching?
Yes, MAX394EUP+ supports true rail-to-rail analog signal handling: analog pins (COM, NO, NC) operate from V− to V+ without damage or performance degradation. This allows full-swing signal routing in both bipolar and single-supply configurations, essential for applications like audio and sensor interfaces where signal headroom is constrained.
What is the guaranteed on-resistance matching between channels for MAX394EUP+?
MAX394EUP+ guarantees on-resistance matching of less than 2Ω between any two channels at +25°C, and less than 4Ω over the full −40°C to +85°C operating range. This specification is tested under defined conditions (V+ = 5V, V− = −5V, VNC/VNO = ±3V, ICOM = 10mA) and ensures predictable gain consistency in multi-channel signal paths.
Can MAX394EUP+ be used with a single 3.3V supply?
Yes, MAX394EUP+ operates with a single +3.3V supply (within +2.7V to +15V range). At +3V, typical on-resistance rises to 185Ω (max 250Ω), turn-on time extends to 400ns, and charge injection drops to 1–5pC. Logic inputs remain compatible, and rail-to-rail analog operation is preserved-ideal for low-power portable systems where supply headroom is limited.
Is MAX394EUP+ pin-compatible with other Maxim analog switches?
Yes, MAX394EUP+ is pin-compatible with MAX333 and MAX333A, sharing identical 20-pin TSSOP pinout and function mapping. This enables drop-in replacement in existing designs, provided temperature and parametric requirements align-especially useful for upgrading commercial-grade MAX333A designs to extended-temperature operation without layout changes.
MAX394EUP+ 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-TSSOP
MAX394EUP+ FAQ
1.How can I place an order for MAX394EUP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394EUP+ 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 MAX394EUP+ reliable?
The price and inventory of MAX394EUP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394EUP+ is usually 5 days.
3.What payment methods are accepted for MAX394EUP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394EUP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394EUP+?
MAX394EUP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394EUP+ 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 MAX394EUP+?
For technical support, including MAX394EUP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394EUP+ requirements.
6.How does Aetrix verify that MAX394EUP+ is sourced from the original manufacturer or authorized distributors?
All MAX394EUP+ 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 MAX394EUP+ meets industry standards.
7.What is the process for return or replacement of MAX394EUP+?
All MAX394EUP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX394EUP+, 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 MAX394EUP+ part is unused and in its original packaging.
Return procedure for MAX394EUP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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