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Analog Devices Inc./Maxim Integrated MAX394EAP+
- Part No.:
- MAX394EAP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX394EAP+.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,930
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Product details
Overview
The MAX394EAP+ 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 MAX394EAP+ datasheet, MAX394EAP+ pinout, MAX394EAP+ application, or MAX394EAP+ equivalent, key selection considerations include guaranteed on-resistance flatness (Δ4Ω max), -40°C to +85°C extended temperature operation, SSOP-20 package compatibility, and TTL/CMOS logic interface with rail-to-rail analog signal handling up to V+ and V−.
Technical Context
The MAX394EAP+ integrates four independent CMOS SPDT switches fabricated using low-voltage silicon-gate process technology. Its architecture ensures matched on-resistance across channels (<2Ω) and flat on-resistance over full analog signal range (Δ4Ω max), enabling precise gain/attenuation control in instrumentation front-ends.
It supports dual-supply (±2.7V to ±8V) and single-supply (+2.7V to +15V) operation with logic inputs compatible across voltage ranges: +0.8V to +2.4V for supplies ≤+8V, and +0.8V to +4V for higher supplies. All analog pins (COM/NO/NC/IN) tolerate signals from V−–2V to V++2V without damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2.7V to ±8V bipolar or +2.7V to +15V single supply - enables flexible power architecture in mixed-signal systems. |
| On-Resistance (max) | 35Ω at ±4.5V - ensures minimal signal attenuation and thermal drift in precision analog paths. |
| On-Resistance Match | <2Ω between channels - critical for multi-channel gain-matching in audio mixers or sensor multiplexers. |
| Charge Injection | <10pC - reduces glitch-induced settling errors in sample-and-hold and ADC front-end applications. |
| Turn-On / Turn-Off Time | <130ns / <75ns - supports fast-switching requirements in automated test equipment and digital audio routing. |
| ESD Rating | >2000V HBM - enhances robustness during board handling and system integration. |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive cabin-adjacent environments. |
Pinout & Package
MAX394EAP+ is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm lead pitch, footprint-compatible with industry-standard SSOP-20 layouts and suitable for high-density PCB designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Logic-level control inputs; TTL/CMOS compatible, drive internal gate drivers for SPDT switching. |
| 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; carry bidirectional rail-to-rail signals between NO and NC paths. |
| 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; shared return for logic and analog sections; decoupling required near pin. |
| 15 | N.C. | No internal connection; leave unconnected per datasheet guidance. |
| 16 | V+ | Positive supply rail; supports up to +15V single supply or +8V in bipolar configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Analog signals swing from V− to V+ without clipping or damage - eliminates level-shifting in wide-dynamic-range systems. |
| Guaranteed break-before-make | 10ns typical delay prevents momentary short-circuit between NO and NC paths - essential for fault-tolerant signal routing. |
| Low quiescent current | <1μA with all inputs high/low - extends battery life in portable instruments and handheld test gear. |
| Flat on-resistance vs. signal voltage | Δ4Ω max variation across full analog range - preserves linearity in precision gain-setting and calibration circuits. |
| ESD protection >2000V | HBM-rated per Method 3015.7 - reduces field failure risk during assembly and end-user handling. |
Applications
| Audio Signal Routing | Test Equipment |
|---|---|
|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in professional audio interfaces. IC Role / Device Role / Timing Role: Quad SPDT analog switch managing bidirectional audio paths with minimal crosstalk and distortion. Use Value: 88dBm crosstalk and <10pC charge injection preserve signal fidelity and reduce audible pop/click artifacts. |
Use Scenario: Automated signal path configuration in benchtop multimeters and signal generators. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling programmable input/output routing under microcontroller control. Use Value: Guaranteed 2Ω on-resistance match ensures consistent measurement accuracy across channels. |
| Communications Systems | Portable Instruments |
|
Use Scenario: RF front-end signal conditioning and antenna switching in baseband subsystems of cellular infrastructure. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating sensitive receiver paths during transmit mode. Use Value: <2.5nA off-channel leakage at +85°C maintains signal integrity in thermally stressed environments. |
Use Scenario: Power management and sensor signal selection in handheld oscilloscopes and spectrum analyzers. IC Role / Device Role / Timing Role: Low-power analog switch enabling battery-operated operation with rail-to-rail signal support. Use Value: <1μA quiescent current and -40°C to +85°C rating ensure reliable field deployment. |
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 |
|---|---|---|---|
| MAX333AEPP+ | Same pinout, but rated only for 0°C to +70°C; on-resistance max 45Ω (vs. 35Ω for MAX394EAP+). | Suitable for commercial-grade instrumentation; not qualified for extended temperature industrial use. | Select when cost sensitivity outweighs temperature range and on-resistance performance. |
| ADG1414BRUZ | Higher on-resistance (1.8Ω typ, 2.5Ω max), but supports wider supply (±15V); 16-pin TSSOP, not pin-compatible. | Better suited for high-voltage industrial PLC I/O modules requiring >±8V tolerance. | Choose when system requires >±8V supply or lower RON variation over temperature, accepting layout change. |
Compared with MAX333AEPP+, the MAX394EAP+ offers tighter on-resistance matching and extended temperature operation; compared with ADG1414BRUZ, it provides pin-compatible SSOP-20 packaging and superior low-voltage performance below ±5V, making it optimal for portable and mid-range industrial signal routing.
Availability
MAX394EAP+ is available at Aetrix Electronics and suitable for audio signal routing, test equipment, communications systems, and portable instruments requiring stable component supply across industrial temperature grades.
Supply support for MAX394EAP+ 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.
The MAX394EAP+ belongs to Analog Devices' precision analog switch product line, engineered for low-distortion, low-leakage signal routing in battery-powered and thermally demanding applications.
FAQ
What is the maximum supply voltage rating for MAX394EAP+?
The MAX394EAP+ supports a maximum total supply voltage (V+ to V−) of 17V. In single-supply mode, V+ may range from +2.7V to +15V with V− tied to GND; in dual-supply mode, V+ and V− may each range from ±2.7V to ±8V. Exceeding these limits risks permanent device damage per absolute maximum ratings.
Does MAX394EAP+ support rail-to-rail analog signal switching?
Yes, the MAX394EAP+ supports true rail-to-rail analog signal handling: analog pins (COM, NO, NC) operate from V− to V+ without clamping or damage. This capability is confirmed in both Absolute Maximum Ratings and Electrical Characteristics tables, enabling direct interfacing with op-amps and ADCs operating at supply rails.
What is the guaranteed on-resistance matching between channels for MAX394EAP+?
The MAX394EAP+ guarantees on-resistance matching of less than 2Ω between any two channels at +25°C, and less than 4Ω across the full −40°C to +85°C operating range. This specification is explicitly tested and documented in the Electrical Characteristics table under "On-Resistance Match Between Channels" for E-grade devices.
Is MAX394EAP+ pin-compatible with other Maxim analog switches?
Yes, the MAX394EAP+ is pin-compatible with the MAX333 and MAX333A families in the same 20-pin SSOP package. Pin assignments, signal roles, and power connections are identical, allowing drop-in replacement where temperature and on-resistance specifications align with design requirements.
What is the charge injection specification for MAX394EAP+ and why does it matter?
The MAX394EAP+ guarantees charge injection of less than 10pC, measured with CL = 1.0nF and RGEN = 0Ω. This low value minimizes voltage glitches on sampled nodes - critical in sample-and-hold circuits, multiplexed ADC front-ends, and precision instrumentation where settling error directly impacts measurement accuracy.
MAX394EAP+ 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-SSOP
MAX394EAP+ FAQ
1.How can I place an order for MAX394EAP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394EAP+ 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 MAX394EAP+ reliable?
The price and inventory of MAX394EAP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394EAP+ is usually 5 days.
3.What payment methods are accepted for MAX394EAP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394EAP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394EAP+?
MAX394EAP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394EAP+ 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 MAX394EAP+?
For technical support, including MAX394EAP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394EAP+ requirements.
6.How does Aetrix verify that MAX394EAP+ is sourced from the original manufacturer or authorized distributors?
All MAX394EAP+ 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 MAX394EAP+ meets industry standards.
7.What is the process for return or replacement of MAX394EAP+?
All MAX394EAP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX394EAP+, 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 MAX394EAP+ part is unused and in its original packaging.
Return procedure for MAX394EAP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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