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Analog Devices Inc./Maxim Integrated MAX394CPP+
- Part No.:
- MAX394CPP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX394CPP+.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,320
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Product details
Overview
The MAX394CPP+ from Analog Devices is a precision quad SPDT analog switch optimized for low-voltage, rail-to-rail signal routing in portable and test equipment. 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 instrumentation signal switching.
For engineers reviewing the MAX394CPP+ datasheet, MAX394CPP+ pinout, MAX394CPP+ application, or MAX394CPP+ equivalent, key selection criteria include guaranteed on-resistance flatness (Δ4Ω max), break-before-make timing (10ns typ), sub-2.5nA off-leakage at +85°C, TTL/CMOS logic compatibility, and 20-pin PDIP packaging for through-hole prototyping and industrial control systems.
Technical Context
The MAX394CPP+ integrates four independent CMOS SPDT switches fabricated using Maxim's low-voltage silicon-gate process. Each switch supports rail-to-rail analog signal handling between V+ and V−, with logic inputs tolerant up to +4V when supplies exceed +8V.
Its architecture guarantees matched on-resistance (<2Ω) and flat on-resistance (Δ4Ω max) across the full analog range, while break-before-make switching prevents signal shorting during state transitions-critical for multiplexer-based data acquisition and communication channel routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 35Ω - Ensures minimal signal attenuation and voltage drop in precision analog paths at ±4.5V supplies. |
| On-Resistance Match | <2Ω - Enables accurate gain/offset matching in multi-channel instrumentation front-ends. |
| Charge Injection | <10pC - Limits voltage glitch on sampled-hold nodes, supporting ≤12-bit accuracy in ADC interfaces. |
| Off-Leakage Current | <2.5nA at +85°C - Preserves DC integrity in high-impedance sensor conditioning circuits. |
| Turn-On/Off Time | <130ns / <75ns - Supports >5MHz multiplexing rates in automated test equipment (ATE) scan paths. |
| Supply Range | ±2.7V to ±8V or +2.7V to +15V - Allows direct integration into mixed-supply systems without level-shifting. |
| ESD Rating | >2000V HBM - Provides robust handling during board assembly and field service in portable instruments. |
Pinout & Package
MAX394CPP+ is housed in a 20-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin 15 is not internally connected (N.C.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Logic-level control inputs; TTL/CMOS compatible, referenced to GND. |
| 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 poles; support rail-to-rail voltage swing between V+ and V−. |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed switch terminals; connect to COM when corresponding IN = logic low. |
| 5 | V− | Negative power supply pin; must be applied before analog signals in dual-supply operation. |
| 6 | GND | Analog/digital ground reference; decoupling capacitor required near this pin. |
| 15 | N.C. | No internal connection; left unconnected on PCB. |
| 16 | V+ | Positive power supply pin; substrate tied to V+ per chip topography. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals from V− to V+ without clipping-essential for ±5V op-amp interfaces and audio line-level routing. |
| Break-before-make switching | 10ns typical delay prevents momentary short-circuit between NO and NC paths-critical for safe reconfiguration of sensor or transducer connections. |
| Guaranteed on-resistance flatness | Δ4Ω max over full analog range ensures consistent gain and linearity in programmable gain amplifier (PGA) and filter bank applications. |
| Low quiescent current | <1μA total supply current enables battery-powered operation in handheld test meters and portable medical devices. |
| TTL/CMOS logic compatibility | Input thresholds defined over temperature (0.8V to 2.4V) allow direct interfacing with microcontrollers and FPGAs without external level shifters. |
Applications
| Test Equipment | Communications Systems |
|---|---|
Use Scenario: Automated test equipment (ATE) uses multiplexed signal paths to route calibration references and DUT outputs to shared measurement resources. IC Role / Device Role / Timing Role: Quad SPDT switch configures analog signal routing under microcontroller control; break-before-make prevents cross-talk during path reconfiguration. Use Value: Guaranteed <2Ω channel matching maintains measurement repeatability across 4-channel scan cards; <10pC charge injection avoids offset drift in precision DAC/ADC reference paths. | Use Scenario: PBX/PABX systems require flexible audio path assignment between handsets, conferencing units, and VoIP gateways. IC Role / Device Role / Timing Role: Audio signal router managing line-level analog voice channels; rail-to-rail capability preserves full dynamic range across varying codec output levels. Use Value: <35Ω on-resistance minimizes insertion loss; <2.5nA leakage at +85°C prevents audible hiss buildup in high-Z audio lines during thermal stress. |
| Heads-Up Displays | Portable Instruments |
Use Scenario: Avionics HUDs integrate multiple video sources (FLIR, synthetic vision, navigation symbology) into a single optical combiner. IC Role / Device Role / Timing Role: Video multiplexer selecting between RGB or digital video streams prior to gamma correction and driver stage. Use Value: 88dB crosstalk suppression isolates video channels; fast 130ns turn-on enables seamless source switching without visible artifacts. | Use Scenario: Handheld multimeters and oscilloscope probes use analog switches to configure input attenuators, AC/DC coupling, and range selection. IC Role / Device Role / Timing Role: Precision signal path selector enabling auto-ranging and mode switching under MCU control. Use Value: Δ4Ω on-resistance flatness ensures consistent gain scaling across ranges; ESD >2000V withstands repeated probe contact in field environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333ACPP+ | Pin-compatible but higher on-resistance (100Ω typ), wider temp range (−40°C to +85°C), no guaranteed charge injection spec. | Better suited for general-purpose switching where precision matching and low glitch energy are non-critical. | Select MAX333ACPP+ only if cost sensitivity outweighs need for <10pC charge injection and <2Ω matching. |
| ADG1414BRUZ | 4-channel SPDT, 1.8Ω max on-resistance, but requires ≥±4.5V dual supply or ≥9V single supply; no 20-pin DIP option. | Preferred for high-speed, low-distortion routing in benchtop instruments where PCB space allows SOIC-20. | Choose ADG1414BRUZ when on-resistance flatness and speed are paramount, and surface-mount assembly is acceptable. |
Compared with MAX333ACPP+, the MAX394CPP+ offers tighter on-resistance matching and lower charge injection for precision signal integrity; versus ADG1414BRUZ, it trades lower on-resistance for through-hole DIP packaging and broader supply flexibility down to ±2.7V.
Availability
MAX394CPP+ is available at Aetrix Electronics and suitable for test equipment, communications systems, heads-up displays, and portable instruments requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for MAX394CPP+ 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 MAX394 product line delivers precision, low-voltage analog switches for signal routing in portable, test, and instrumentation applications-designed to replace mechanical relays and discrete MOSFET arrays with monolithic reliability and guaranteed matching.
FAQ
What is the maximum supply voltage rating for MAX394CPP+?
The MAX394CPP+ supports a maximum V+ to V− differential of 17V. Absolute maximum ratings specify V+ to GND as −0.3V to +17V and V− to GND as +0.3V to −17V. Exceeding these limits risks permanent damage. For reliable operation, maintain V+ − V− ≤ 16V and observe proper power sequencing: apply V+ first, then V−, before analog or logic signals.
Does MAX394CPP+ support single-supply operation with 3.3V?
Yes, MAX394CPP+ operates with a single +2.7V to +15V supply. At +3.3V, typical on-resistance rises to 185Ω (max 250Ω), turn-on time extends to 400ns, and charge injection reduces to 1–5pC. Logic inputs remain compatible (0.8V to 2.4V thresholds), and rail-to-rail analog signal handling is preserved from 0V to V+.
What is the function of Pin 15 on MAX394CPP+?
Pin 15 on MAX394CPP+ is labeled N.C. (Not Connected) and has no internal bond wire or circuit connection. It must be left unconnected on the PCB layout. This pin serves no electrical purpose and should not be tied to V+, V−, GND, or any other node-doing so may compromise package integrity or thermal performance.
How does MAX394CPP+ handle overvoltage on analog pins?
MAX394CPP+ includes internal protection diodes between analog pins (COM, NO, NC) and V+/V−. If an analog signal exceeds V+ or falls below V− by more than ~0.7V, current flows through these diodes. To prevent damage, limit fault current to <30mA continuous or <100mA peak (1ms, 10% duty). External series resistors or Schottky clamps are recommended for sustained overvoltage conditions.
Is MAX394CPP+ RoHS compliant?
Yes, MAX394CPP+ is RoHS compliant. The "+" suffix in the part number indicates lead-free (Pb-free) and RoHS-compliant packaging per EU Directive 2011/65/EU. The 20-pin plastic DIP package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 requirements for unlimited floor life at ≤30°C/60% RH.
MAX394CPP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-PDIP
MAX394CPP+ FAQ
1.How can I place an order for MAX394CPP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394CPP+ 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 MAX394CPP+ reliable?
The price and inventory of MAX394CPP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394CPP+ is usually 5 days.
3.What payment methods are accepted for MAX394CPP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394CPP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394CPP+?
MAX394CPP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394CPP+ 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 MAX394CPP+?
For technical support, including MAX394CPP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394CPP+ requirements.
6.How does Aetrix verify that MAX394CPP+ is sourced from the original manufacturer or authorized distributors?
All MAX394CPP+ 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 MAX394CPP+ meets industry standards.
7.What is the process for return or replacement of MAX394CPP+?
All MAX394CPP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX394CPP+, 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 MAX394CPP+ part is unused and in its original packaging.
Return procedure for MAX394CPP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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