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Analog Devices Inc./Maxim Integrated MAX394EAP+T
- Part No.:
- MAX394EAP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX394EAP+T.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,604
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Product details
Overview
The MAX394EAP+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-enabling high-fidelity audio and test-signal switching in handheld instruments and communications equipment.
For engineers reviewing the MAX394EAP+T datasheet, MAX394EAP+T pinout, MAX394EAP+T application, or MAX394EAP+T equivalent, key selection criteria include guaranteed on-resistance flatness (Δ4Ω max), break-before-make timing (10ns typ), ESD robustness (>2000V), and SSOP-20 compatibility with TTL/CMOS logic across extended temperature (–40°C to +85°C).
Technical Context
This monolithic CMOS analog switch uses Maxim's low-voltage silicon-gate process to achieve sub-μA quiescent current (<1μA) and rail-to-rail analog signal handling (V– to V+). Its four independent SPDT switches integrate internal protection diodes and support both unipolar and bipolar operation without external level-shifting.
The device guarantees matched on-resistance between channels (<2Ω) and flat on-resistance over full analog range (Δ4Ω max), critical for precision multiplexing and gain-switching circuits. Break-before-make architecture (10ns typical delay) prevents signal shorting during channel transitions in sensitive measurement paths.
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 external regulators |
| 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 accurate gain/attenuation ratio matching in multi-channel instrumentation |
| Charge Injection | 10pC max - reduces glitch-induced settling errors in sample-and-hold and ADC front-end applications |
| Off-Leakage Current | 2.5nA max at +85°C - preserves DC accuracy in high-impedance sensor interfaces and battery-powered meters |
| Switching Speed | tON <130ns, tOFF <75ns - suitable for dynamic signal routing in real-time audio and data acquisition |
| ESD Rating | >2000V per Method 3015.7 - enhances reliability in handling-sensitive production and field service environments |
Pinout & Package
MAX394EAP+T is housed in a 20-pin SSOP package (3.9mm × 8.7mm, 0.65mm pitch), RoHS-compliant and optimized for space-constrained PCB layouts in portable instrumentation and telecom modules.
| 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 analog terminals - connect to COM when corresponding IN is high |
| 3, 8, 13, 18 | COM1–COM4 | Common analog poles - route bidirectional signals between NO and NC paths |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed analog terminals - connect to COM when corresponding IN is low |
| 5 | V− | Negative power supply rail - must be applied before analog signals in dual-supply sequencing |
| 6 | GND | Ground reference - serves as return path for logic and analog currents |
| 15 | N.C. | No internal connection - left unconnected on PCB |
| 16 | V+ | Positive power supply rail - supports up to +15V single-supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals from V− to V+ - eliminates need for external level shifters in mixed-supply systems |
| Guaranteed break-before-make | 10ns typical delay prevents momentary short-circuiting between NO and NC paths during switching |
| Low quiescent current | <1μA with all inputs high or low - extends battery life in portable test gear and handheld medical devices |
| Flat on-resistance profile | Δ4Ω max over full analog range - maintains consistent gain/attenuation in precision programmable-gain amplifiers |
| ESD-robust construction | >2000V HBM - reduces field failure risk in automated assembly and end-user handling |
Applications
| Audio Signal Routing | Portable Test Equipment |
|---|---|
|
Use Scenario: Switching line-level stereo signals between multiple outputs in battery-powered audio mixers. IC Role / Device Role / Timing Role: Quad SPDT analog switch managing bidirectional signal paths with minimal crosstalk and distortion. Use Value: 88dBm crosstalk and 10pC charge injection preserve signal fidelity across headphone, speaker, and line-out channels. |
Use Scenario: Multiplexing sensor inputs and reference voltages in handheld multimeters and LCR meters. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling of high-impedance sources without loading error. Use Value: 2.5nA max off-leakage at +85°C ensures stable DC accuracy over operating temperature range. |
| Communications Systems | Heads-Up Displays (HUD) |
|
Use Scenario: Routing RF IF signals and calibration paths in base station transceivers and small-cell radios. IC Role / Device Role / Timing Role: Low-capacitance analog switch isolating transmit/receive chains during calibration cycles. Use Value: 12pF off-capacitance and 66dBm off-isolation minimize signal coupling in 1MHz–100MHz bands. |
Use Scenario: Selecting video sources (e.g., camera feed vs. navigation overlay) in automotive HUD controllers. IC Role / Device Role / Timing Role: Fast-switching SPDT interface synchronizing display updates with vehicle bus timing. Use Value: 75ns max turn-off time enables sub-100ns source arbitration for real-time graphics rendering. |
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; higher on-resistance (45Ω max) and lower ESD rating (1500V) | Suitable for commercial-grade instrumentation where extended temperature is not required | Select MAX333AEPP+ only if cost sensitivity outweighs industrial temperature and ESD requirements |
| ADG1414BRUZ | Higher supply voltage limit (+36V), lower on-resistance (1.8Ω typ), but larger TSSOP-24 package and no SSOP option | Better for high-voltage industrial PLC I/O modules requiring wider signal swing | Choose ADG1414BRUZ when >±15V operation or sub-2Ω RON is mandatory; avoid if SSOP-20 footprint is fixed |
Compared with MAX333AEPP+, MAX394EAP+T provides superior temperature range and ESD robustness; compared with ADG1414BRUZ, it offers smaller SSOP-20 packaging and lower system-level BOM cost for portable designs operating within ±8V.
Availability
MAX394EAP+T is available at Aetrix Electronics and suitable for portable instruments, communications systems, and heads-up displays requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX394EAP+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 (acquired Maxim Integrated in 2021) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, and communications markets.
The MAX394 series belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, low-leakage signal routing in battery-powered and high-reliability measurement systems.
FAQ
What is the operating temperature range for the MAX394EAP+T?
The MAX394EAP+T is specified for operation from –40°C to +85°C, making it suitable for industrial and automotive cabin environments where ambient temperatures exceed commercial-grade limits. This extended range is confirmed in the Ordering Information table and validated across all electrical parameters including on-resistance match and leakage current.
Does the MAX394EAP+T support single-supply operation?
Yes, the MAX394EAP+T supports single-supply operation from +2.7V to +15V. At +5V supply, typical on-resistance is 65Ω (max 75Ω), and logic inputs remain TTL/CMOS-compatible with thresholds of 0.8V (low) and 2.4V (high). The device maintains rail-to-rail analog signal handling (0V to V+) under single-supply conditions.
Is the MAX394EAP+T pin-compatible with other MAX394 variants?
Yes, the MAX394EAP+T shares identical pinout and functionality with all MAX394 variants in SSOP-20 packaging (e.g., MAX394CAP+T, MAX394EAP+), differing only in temperature grade and screening. It is also pin-compatible with MAX333 and MAX333A per the Features section, enabling drop-in replacement in legacy designs.
What is the maximum analog signal voltage the MAX394EAP+T can handle?
The MAX394EAP+T supports analog signals ranging from V− to V+, with absolute maximum ratings of (V− − 2V) to (V+ + 2V) on COM, NO, and NC pins. For example, with ±5V supplies, analog signals from –7V to +7V are permissible, provided current remains below 30mA continuous or 100mA pulsed (1ms, 10% duty cycle).
How does charge injection performance impact precision applications using the MAX394EAP+T?
With guaranteed charge injection ≤10pC, the MAX394EAP+T minimizes voltage glitches on high-impedance nodes-critical in sample-and-hold circuits and switched-capacitor filters. At CL = 1nF, this translates to ≤10mV step error, enabling accurate DC-coupled signal conditioning in portable oscilloscopes and data loggers.
MAX394EAP+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-SSOP
MAX394EAP+T FAQ
1.How can I place an order for MAX394EAP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394EAP+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 MAX394EAP+T reliable?
The price and inventory of MAX394EAP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394EAP+T is usually 5 days.
3.What payment methods are accepted for MAX394EAP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394EAP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394EAP+T?
MAX394EAP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394EAP+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 MAX394EAP+T?
For technical support, including MAX394EAP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394EAP+T requirements.
6.How does Aetrix verify that MAX394EAP+T is sourced from the original manufacturer or authorized distributors?
All MAX394EAP+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 MAX394EAP+T meets industry standards.
7.What is the process for return or replacement of MAX394EAP+T?
All MAX394EAP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX394EAP+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 MAX394EAP+T part is unused and in its original packaging.
Return procedure for MAX394EAP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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