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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 SPDTX4 35OHM 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,303
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Product details
Overview
MAX394EUP from Maxim Integrated 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 <10pC charge injection - enabling high-fidelity audio and test-signal switching in battery-powered instruments.
For engineers reviewing the MAX394EUP datasheet, MAX394EUP pinout, MAX394EUP application, or MAX394EUP equivalent, key selection criteria include guaranteed break-before-make timing (10ns typ), -40°C to +85°C extended temperature operation, TSSOP-20 package compatibility, and TTL/CMOS logic interface robustness across supply ranges.
Technical Context
The MAX394EUP integrates four independent CMOS SPDT switches fabricated using Maxim's low-voltage silicon-gate process. Each switch features matched on-resistance (<2Ω max mismatch), flat RON over full analog swing (Δ4Ω max), and rail-to-rail analog signal handling from V− to V+ - critical for preserving signal integrity in multi-channel instrumentation front-ends.
Its digital interface supports TTL/CMOS logic thresholds (0.8V–2.4V up to +8V supplies; 0.8V–4V above), while electrostatic discharge protection exceeds 2000V (HBM). Quiescent current remains below 1µA with all inputs high or low, and dynamic performance includes tON <130ns and tOFF <75ns at ±5V.
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 - ensures minimal insertion loss and gain error in precision signal paths |
| On-Resistance Match | <2Ω between channels - maintains amplitude consistency across multiplexed sensor or audio channels |
| Charge Injection | <10pC - reduces voltage glitch and settling time in sample-hold and ADC front-end applications |
| Break-Before-Make Delay | 10ns typical - prevents momentary short-circuit during channel switching in sensitive analog circuits |
| ESD Rating | >2000V HBM - enhances reliability in handheld test equipment and field-deployable instrumentation |
| Operating Temperature | -40°C to +85°C - qualified for industrial and automotive cabin-temperature environments |
Pinout & Package
MAX394EUP is housed in a 20-pin Thin Shrink Small Outline Package (TSSOP) with 0.65mm pitch, optimized for high-density PCB layouts and thermal performance (879mW max power dissipation at +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Logic control inputs for respective SPDT switches; TTL/CMOS compatible with defined VIH/VIL thresholds |
| 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 signal nodes; support rail-to-rail voltage swing 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 | Analog/digital ground reference; decoupling required near V+ and V− pins |
| 16 | V+ | Positive supply rail; supports up to +15V single or ±8V dual operation |
| 15 | N.C. | No internal connection; left unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals spanning V− to V+ without clipping or distortion - essential for full-scale sensor and audio routing |
| Guaranteed break-before-make | 10ns typical delay prevents signal shorting during channel transitions - critical for protecting downstream amplifiers and ADCs |
| Ultra-low quiescent current | <1µA total supply current with all inputs static - extends battery life in portable test gear and medical devices |
| Low off-channel leakage | <2.5nA at +85°C - minimizes crosstalk and DC offset errors in high-impedance sensor multiplexing |
| Pin compatibility with MAX333/MAX333A | Enables drop-in upgrade path for legacy designs requiring improved RON flatness and lower charge injection |
Applications
| Portable Test Equipment | Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing multiple sensor inputs into a shared ADC in handheld multimeters or oscilloscope probes. IC Role / Device Role / Timing Role: Quad SPDT analog switch providing channel-selectable signal path with break-before-make isolation. Use Value: <2Ω channel RON match preserves measurement accuracy across channels; <10pC charge injection avoids ADC input step errors. |
Use Scenario: Selecting between microphone, line-in, and headphone outputs in compact audio interfaces. IC Role / Device Role / Timing Role: Low-distortion analog switch routing AC-coupled audio signals with rail-to-rail capability. Use Value: 35Ω max RON and Δ4Ω flatness maintain frequency response integrity; ESD >2000V protects against user-handling events. |
| Communications Baseband | Heads-Up Display (HUD) Signal Conditioning |
Use Scenario: Switching calibration references or filter banks in RF transceiver baseband sections. IC Role / Device Role / Timing Role: Precision analog switch enabling reconfigurable signal chains with minimal THD impact. Use Value: Off-isolation >66dB and crosstalk >88dB at 1MHz suppress interference between adjacent communication channels. |
Use Scenario: Routing video sync, brightness control, and sensor feedback signals in automotive HUD modules. IC Role / Device Role / Timing Role: Industrial-grade analog switch operating reliably across -40°C to +85°C under vehicle hood conditions. Use Value: Extended temperature rating and 879mW TSSOP power dissipation ensure stable operation in thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333AEPP | 20-pin DIP, same pinout, but higher RON (45Ω max) and no guaranteed break-before-make | Less suitable for high-speed or precision-matched switching; limited to 0°C to +70°C | Select only if DIP packaging and cost are prioritized over speed and temperature range |
| ADG1414BRUZ | 16-pin TSSOP, 4-channel SPDT, 1.5Ω typical RON, but requires ≥±4.5V supplies and lacks single-supply operation | Not viable for +3.3V-only systems; incompatible pinout and footprint | Consider only for ultra-low-RON needs where supply flexibility is not required |
Compared with MAX333AEPP and ADG1414BRUZ, the MAX394EUP uniquely balances wide supply range (+2.7V to +15V or ±2.7V to ±8V), guaranteed break-before-make, -40°C to +85°C operation, and TSSOP-20 compatibility - making it optimal for next-generation portable instrumentation and industrial signal routing.
Availability
MAX394EUP is available at Aetrix Electronics and suitable for portable test equipment, audio signal routing, and communications baseband applications requiring stable component supply across extended 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer markets.
The MAX394EUP belongs to Maxim's precision analog switch product line, designed specifically for low-distortion, low-leakage, and low-charge-injection signal routing in portable and high-reliability instrumentation systems.
FAQ
What supply voltage ranges does the MAX394EUP support?
The MAX394EUP supports bipolar supplies from ±2.7V to ±8V and single supplies from +2.7V to +15V. Its analog signal range extends rail-to-rail from V− to V+, and absolute maximum ratings allow V+ to V− differential up to 17V. This flexibility makes MAX394EUP suitable for both legacy ±5V systems and modern low-voltage +3.3V or +5V designs.
Does the MAX394EUP provide guaranteed break-before-make switching?
Yes, the MAX394EUP guarantees break-before-make operation with a typical delay of 10ns. This is explicitly characterized in the datasheet under "Break-Before-Make Time Delay" and ensures no momentary short-circuit occurs between NC and NO paths during switching - a critical feature for protecting sensitive downstream circuitry in the MAX394EUP application.
What is the maximum on-resistance and matching specification for the MAX394EUP?
The MAX394EUP has a maximum on-resistance of 35Ω and guarantees channel-to-channel on-resistance matching within 2Ω across temperature and signal range. These values are tested and specified for the E-grade (-40°C to +85°C) version, ensuring consistent performance in industrial and automotive cabin environments where the MAX394EUP is commonly deployed.
Is the MAX394EUP pin-compatible with other Maxim analog switches?
Yes, the MAX394EUP is pin-compatible with the MAX333 and MAX333A in the same 20-pin package variants. This allows direct replacement in existing designs to improve on-resistance flatness (Δ4Ω max vs. unspecified in older parts) and reduce charge injection (<10pC vs. higher in MAX333), enhancing accuracy in the MAX394EUP application without layout changes.
What is the leakage current performance of the MAX394EUP at elevated temperature?
At +85°C, the MAX394EUP guarantees NC/NO off-leakage current ≤ ±2.5nA and COM on-leakage ≤ ±5.0nA under specified conditions. These values are 100% tested at hot temperature and correlated at room temperature, ensuring reliable high-impedance signal integrity in sensor multiplexing and precision measurement applications using the MAX394EUP.
MAX394EUP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPDT - Open/Closed
- 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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