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Analog Devices Inc./Maxim Integrated MAX394EUP+T
- Part No.:
- MAX394EUP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX394EUP+T.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,622
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Product details
Overview
The MAX394EUP+T from Analog Devices is a precision quad SPDT analog switch optimized for rail-to-rail signal routing in portable and low-power 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 signal routing and test equipment multiplexing.
For engineers reviewing the MAX394EUP+T datasheet, MAX394EUP+T pinout, MAX394EUP+T application, or MAX394EUP+T equivalent, key selection criteria include guaranteed break-before-make timing (10ns typ), -40°C to +85°C industrial temperature range, 20-pin TSSOP package, and TTL/CMOS-compatible logic inputs supporting both dual- and single-supply configurations.
Technical Context
The MAX394EUP+T integrates four independent CMOS SPDT switches fabricated using low-voltage silicon-gate process technology. Its architecture guarantees matched on-resistance (<2Ω) and flat on-resistance (Δ4Ω max) across the full analog signal range (V– to V+), enabling precise gain-setting and signal-path calibration in instrumentation.
It features break-before-make switching (10ns typical), sub-75ns turn-off time, and rail-to-rail analog handling-supporting seamless signal routing without level-shifting in mixed-supply systems. Logic inputs are TTL/CMOS compatible over +0.8V to +2.4V (≤+8V supplies) or +0.8V to +4V (>+8V supplies), with <1μA quiescent current at all logic states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±2.7V to ±8V bipolar or +2.7V to +15V single supply-supports direct integration into battery-powered and industrial power rails without external regulators. |
| On-Resistance (max) | 35Ω at ±4.5V supplies-ensures minimal signal attenuation and distortion in audio and sensor signal paths. |
| On-Resistance Match | <2Ω between channels-critical for matched gain stages and differential signal switching without imbalance. |
| Charge Injection | <10pC-prevents voltage glitches in sample-and-hold circuits and precision ADC front-ends. |
| Turn-Off Time | <75ns-enables fast channel switching in automated test equipment and real-time signal routing. |
| ESD Rating | >2000V HBM-provides robust handling during PCB assembly and field service in industrial environments. |
| Operating Temp | -40°C to +85°C-qualified for extended deployment in automotive infotainment, industrial HMIs, and outdoor communications gear. |
Pinout & Package
MAX394EUP+T is housed in a 20-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm pitch, 6.5mm × 4.4mm body, and exposed substrate tied to V+. This RoHS-compliant package supports high-density PCB layouts and automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Logic-level control inputs-TTL/CMOS compatible; drive internal gate drivers to select NO or NC path per switch. |
| 2, 9, 12, 19 | NO1–NO4 | Normally open switch terminals-connect to COM only when corresponding IN = logic high. |
| 3, 8, 13, 18 | COM1–COM4 | Common analog signal nodes-bidirectional, rail-to-rail capable; serve as input/output junctions for each SPDT switch. |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed switch terminals-connect to COM when corresponding IN = logic low; isolated when high. |
| 5 | V− | Negative supply pin-must be connected before applying analog signals to prevent latch-up or ESD damage. |
| 6 | GND | Ground reference-common return for logic and analog sections; decoupling capacitor required near pin. |
| 15 | N.C. | No internal connection-left unconnected; no electrical function or thermal role. |
| 16 | V+ | Positive supply pin-powers analog core and logic interface; substrate tied internally to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports continuous analog 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-circuit between NO and NC paths-essential for safe switching in powered signal chains. |
| Ultra-low charge injection (<10pC) | Minimizes voltage transients at COM node during switching-preserves accuracy in precision sampling and DAC output buffering. |
| Low leakage (<2.5nA @ +85°C) | Ensures signal integrity in high-impedance sensor interfaces and battery-monitoring circuits over full temperature range. |
| Pin compatibility with MAX333/MAX333A | Enables drop-in upgrade path for legacy designs requiring improved on-resistance matching and lower charge injection. |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
|
Use Scenario: Switching line-level stereo signals between multiple sources (DAC, Bluetooth codec, microphone preamp) in portable audio hubs. IC Role / Device Role / Timing Role: Quad SPDT analog switch managing bidirectional signal paths with simultaneous channel isolation and rail-to-rail swing. Use Value: <35Ω on-resistance and <2Ω channel matching preserve frequency response flatness and channel balance across 20Hz–20kHz. |
Use Scenario: Automated routing of DUT signals to oscilloscope, multimeter, and signal generator in benchtop ATE systems. IC Role / Device Role / Timing Role: Precision analog multiplexer providing fast, glitch-free channel selection under microcontroller control. Use Value: <75ns turn-off time and break-before-make guarantee prevent cross-talk or shorting during dynamic test sequence execution. |
| Heads-Up Display (HUD) Interface | Portable Instrument Signal Conditioning |
|
Use Scenario: Selecting between ambient light sensor, camera feed, and navigation data streams for overlay rendering in automotive HUDs. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating high-impedance sensor outputs while maintaining signal fidelity at wide temperature range. Use Value: <2.5nA off-leakage at +85°C ensures stable DC offset in brightness calibration loops and avoids drift in analog video paths. |
Use Scenario: Configuring gain and filter paths in handheld multimeters and portable spectrum analyzers with auto-ranging capability. IC Role / Device Role / Timing Role: Precision analog switch enabling programmable front-end topology changes without mechanical relays. Use Value: <10pC charge injection prevents baseline shift during autoranging transitions-critical for sub-mV measurement accuracy. |
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+ | Higher on-resistance (45Ω max), wider temp range (-40°C to +85°C), same 20-pin PDIP footprint-no TSSOP variant available. | Preferred where through-hole assembly or higher voltage tolerance (+20V max) is required; less suitable for space-constrained portable designs. | Select MAX333AEPP+ only if board layout mandates DIP package or system requires >±8V operation. |
| ADG1414BRUZ | Lower on-resistance (1.8Ω typ), higher supply limit (+36V), but higher charge injection (12pC) and no guaranteed break-before-make. | Better for high-precision instrumentation needing ultra-low RON; unsuitable where glitch-free switching is mandatory (e.g., powered signal chains). | Choose ADG1414BRUZ when RON dominates design priority and timing-critical break-before-make is not required. |
Compared with MAX333AEPP+ and ADG1414BRUZ, the MAX394EUP+T uniquely balances low on-resistance, guaranteed break-before-make, ultra-low charge injection, and compact TSSOP packaging-making it optimal for portable, battery-sensitive, and timing-critical analog routing.
Availability
MAX394EUP+T is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and portable instrument signal conditioning requiring stable component supply across industrial temperature grades and long-lifecycle programs.
Supply support for MAX394EUP+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX394EUP+T belongs to Analog Devices' precision analog switch product line, engineered specifically for low-distortion, low-glitch signal routing in portable, test, and display systems demanding rail-to-rail operation and guaranteed timing behavior.
FAQ
What supply voltage ranges does the MAX394EUP+T support?
The MAX394EUP+T supports bipolar supplies from ±2.7V to ±8V and single supplies from +2.7V to +15V. Absolute maximum ratings allow V+ to V− differentials up to 17V. Operation outside these ranges risks permanent damage. The MAX394EUP+T maintains specified on-resistance, leakage, and switching performance across its full rated supply range, including at minimum ±2.7V and +2.7V conditions.
Does the MAX394EUP+T guarantee break-before-make switching, and what is the typical delay?
Yes, the MAX394EUP+T guarantees break-before-make switching with a typical delay of 10ns and a maximum of 20ns over temperature. This timing prevents momentary short-circuiting between NO and NC paths during state transitions-critical for protecting downstream circuitry in powered signal chains. The MAX394EUP+T achieves this via internal logic sequencing, not external timing components.
What is the maximum on-resistance specification for the MAX394EUP+T, and how does it vary with supply voltage?
The MAX394EUP+T has a maximum on-resistance of 35Ω at ±4.5V supplies (V+ = +4.5V, V− = −4.5V), rising to 45Ω over full temperature range. At +5V single supply, RON(max) is 75Ω; at +3V, it increases to 250Ω. The MAX394EUP+T datasheet provides detailed RON vs. VCOM curves across supply voltages and temperatures to support accurate signal loss budgeting.
How does the MAX394EUP+T handle logic-level inputs across different supply configurations?
The MAX394EUP+T logic inputs are TTL/CMOS compatible: for supplies ≤+8V, inputs are guaranteed over +0.8V (low) to +2.4V (high); for supplies >+8V, the high threshold extends to +4V. Input currents remain below ±1.0μA across all conditions. The MAX394EUP+T tolerates input voltages beyond supply rails (V− −2V to V+ +2V) due to internal clamping diodes-provided current is limited to 30mA.
Is the MAX394EUP+T pin-compatible with other Maxim analog switches?
Yes, the MAX394EUP+T is pin-compatible with the MAX333 and MAX333A in the same 20-pin TSSOP (U20-2) package. This allows direct replacement without PCB modification when upgrading for improved on-resistance matching (<2Ω vs. <5Ω), lower charge injection (<10pC vs. <25pC), or enhanced ESD rating (>2000V vs. >1000V). The MAX394EUP+T retains identical pin functions and electrical interface behavior.
MAX394EUP+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-TSSOP
MAX394EUP+T FAQ
1.How can I place an order for MAX394EUP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394EUP+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 MAX394EUP+T reliable?
The price and inventory of MAX394EUP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394EUP+T is usually 5 days.
3.What payment methods are accepted for MAX394EUP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394EUP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394EUP+T?
MAX394EUP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394EUP+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 MAX394EUP+T?
For technical support, including MAX394EUP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394EUP+T requirements.
6.How does Aetrix verify that MAX394EUP+T is sourced from the original manufacturer or authorized distributors?
All MAX394EUP+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 MAX394EUP+T meets industry standards.
7.What is the process for return or replacement of MAX394EUP+T?
All MAX394EUP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX394EUP+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 MAX394EUP+T part is unused and in its original packaging.
Return procedure for MAX394EUP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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