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Analog Devices Inc./Maxim Integrated MAX394CWP+T
- Part No.:
- MAX394CWP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX394CWP+T.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:743
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Product details
Overview
MAX394CWP+T 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, guarantees ≤2Ω channel-to-channel match, and achieves <10pC charge injection - enabling high-fidelity audio and instrumentation signal paths.
For engineers reviewing the MAX394CWP+T datasheet, MAX394CWP+T pinout, MAX394CWP+T application, or MAX394CWP+T equivalent, key selection criteria include guaranteed on-resistance flatness (Δ4Ω max), break-before-make timing (10ns typ), ESD robustness (>2000V), and compatibility with TTL/CMOS logic across supply ranges up to +15V.
Technical Context
The MAX394CWP+T implements four independent CMOS SPDT switches using Maxim's low-voltage silicon-gate process, supporting both dual-supply (±2.7V to ±8V) and single-supply (+2.7V to +15V) operation with full rail-to-rail analog signal handling. Its architecture ensures matched on-resistance and minimal charge injection via precision layout and process control.
Logic inputs are TTL/CMOS-compatible over +0.8V to +2.4V (≤+8V supplies) or +0.8V to +4V (>+8V supplies); all analog pins tolerate voltages from (V− − 2V) to (V+ + 2V). Break-before-make switching prevents signal shorting during transitions, with turn-on/turn-off times under 130ns/75ns at +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | <35Ω max at ±4.5V supplies - ensures minimal signal attenuation and gain error in precision signal chains |
| On-Resistance Match | <2Ω between channels - enables accurate differential and multiplexed measurement without calibration |
| Charge Injection | <10pC - reduces glitch-induced settling errors in sample-and-hold and ADC front-end circuits |
| Break-Before-Make Delay | 10ns typical - prevents momentary shorting of signal paths during switching |
| ESD Rating | >2000V per Method 3015.7 - supports robust handling in bench and field-deployed test systems |
| Supply Range | ±2.7V to ±8V or +2.7V to +15V - accommodates battery-powered, industrial, and mixed-signal system rails |
| Off-Leakage Current | <2.5nA at +85°C - preserves accuracy in high-impedance sensor interfaces and precision integrators |
Pinout & Package
MAX394CWP+T is housed in a 20-pin Wide SO (SOIC-W) package (package code W26-1), RoHS-compliant, with exposed substrate tied to V+ for thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Active-high logic control inputs for respective SPDT switches; TTL/CMOS compatible |
| 2, 9, 12, 19 | NO1–NO4 | Normally open analog terminals - connect to COM when corresponding IN = high |
| 3, 8, 13, 18 | COM1–COM4 | Common analog poles - bidirectional signal path shared between NO and NC |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed analog terminals - connect to COM when corresponding IN = low |
| 5 | V− | Negative power supply rail - required for bipolar operation; grounded in single-supply mode |
| 6 | GND | Analog/digital reference ground - separate from V− in dual-supply configurations |
| 15 | N.C. | No internal connection - must be left unconnected |
| 16 | V+ | Positive power supply rail - supports up to +15V; substrate tied to this pin |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Signals from V− to V+ pass unclamped - eliminates level-shifting in wide-dynamic-range systems |
| Guaranteed on-resistance flatness | Δ4Ω max over full analog range - maintains consistent gain and linearity across input voltage swing |
| Low quiescent current | <1μA with all inputs high/low - extends battery life in portable instruments and handheld testers |
| Pin compatibility with MAX333/MAX333A | Drop-in replacement for legacy designs - no PCB or firmware changes required |
| 100% tested leakage at hot temperature | INC(OFF)/INO(OFF) < ±2.5nA at +85°C - ensures reliability in thermally demanding environments |
Applications
| Test Equipment | Communications Systems |
|---|---|
Use Scenario: Automated test fixture routing analog signals between DUT, source, and measurement instruments. IC Role / Device Role / Timing Role: Quad SPDT switch selecting signal paths under microcontroller control with sub-130ns switching. Use Value: Guaranteed <2Ω on-resistance matching minimizes channel-to-channel gain error during multi-point calibration. | Use Scenario: Signal routing in baseband processing stages of cellular infrastructure and point-to-point radios. IC Role / Device Role / Timing Role: Low-charge-injection analog switch managing filter bank selection and I/Q path configuration. Use Value: <10pC charge injection prevents DC offset drift in sensitive receiver front-ends and DAC output conditioning. |
| PBX/PABX | Audio Signal Routing |
Use Scenario: Line card interface in enterprise telephony systems requiring reliable voice path switching. IC Role / Device Role / Timing Role: Fault-tolerant analog switch isolating subscriber lines and tone generators with ESD-hardened I/O. Use Value: >2000V HBM ESD rating ensures survivability during board-level handling and field maintenance. | Use Scenario: Channel selection and mute control in professional audio mixers and digital effects processors. IC Role / Device Role / Timing Role: Precision SPDT switch routing line-level or headphone signals with minimal THD+N degradation. Use Value: <35Ω on-resistance and Δ4Ω flatness preserve frequency response and stereo imaging integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333ACPP+ | Same pinout, but higher on-resistance (45Ω max), wider temp range (−40°C to +85°C), and no guaranteed charge injection spec | Less suitable for low-glitch audio or precision sampling; better for industrial ambient conditions | Select when extended temperature range is critical and charge injection tolerance >15pC is acceptable |
| ADG1414BRUZ | Different pinout (20-TSSOP), lower on-resistance (1.8Ω typ), higher supply limit (+36V), but no guaranteed break-before-make | Not pin-compatible; requires PCB redesign; superior for high-voltage industrial muxing | Choose for ultra-low RON and high-voltage operation where timing control is secondary |
Compared with MAX333ACPP+, MAX394CWP+T offers tighter on-resistance matching and lower charge injection for precision signal integrity; versus ADG1414BRUZ, it provides guaranteed break-before-make and simpler logic interface at the cost of higher RON and lower voltage rating.
Availability
MAX394CWP+T is available at Aetrix Electronics and suitable for test equipment, communications systems, PBX/PABX infrastructure, and portable instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX394CWP+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 precision instrumentation, industrial, and communications markets.
The MAX394 series belongs to Analog Devices' precision analog switch product line, engineered for low-distortion, low-leakage, and rail-to-rail signal routing in portable and automated test applications.
FAQ
What supply voltage ranges does the MAX394CWP+T support?
The MAX394CWP+T supports bipolar supplies from ±2.7V to ±8V and single supplies from +2.7V to +15V. At ±4.5V, its on-resistance is guaranteed ≤35Ω; at +5V single supply, RON is ≤65Ω. The device tolerates analog signals from (V− − 2V) to (V+ + 2V), making MAX394CWP+T suitable for wide-input-range signal conditioning without external clamping.
Is the MAX394CWP+T pin-compatible with other Maxim analog switches?
Yes, the MAX394CWP+T is pin-compatible with the MAX333 and MAX333A in the same 20-pin Wide SO package. This allows direct replacement in legacy designs without PCB modification. However, MAX394CWP+T improves upon those predecessors with tighter on-resistance matching (<2Ω vs. unspecified), lower charge injection (<10pC vs. ~15pC), and enhanced ESD rating (>2000V vs. unspecified).
What is the maximum allowable voltage difference between V+ and V− for the MAX394CWP+T?
The absolute maximum voltage difference between V+ and V− for MAX394CWP+T is 17V. Exceeding this risks permanent damage. For example, valid combinations include +8.5V/−8.5V (17V total), +15V/0V (15V), or +5V/−5V (10V). Operation outside this limit violates Absolute Maximum Ratings and may compromise reliability even if functional temporarily.
How does the MAX394CWP+T handle logic input levels at different supply voltages?
At supply voltages ≤+8V, MAX394CWP+T guarantees TTL/CMOS compatibility with logic high ≥+2.4V and logic low ≤+0.8V. When V+ exceeds +8V, the input high threshold typically extends to +4V. Inputs remain functional across the full analog voltage range (V− to V+), and input currents stay below ±1.0μA - ensuring clean interfacing with microcontrollers and FPGAs regardless of supply configuration.
Can the MAX394CWP+T be used in audio applications requiring low distortion?
Yes, the MAX394CWP+T is well-suited for audio routing due to its <35Ω on-resistance, Δ4Ω flatness, and <10pC charge injection - all contributing to low THD+N and minimal signal-dependent distortion. Its rail-to-rail capability supports full-scale line-level (±2V) and headphone drive signals. Verified performance at 1MHz shows >66dB off-isolation and >88dB crosstalk, confirming suitability for stereo and multi-channel audio paths in MAX394CWP+T-based designs.
MAX394CWP+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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MAX394CWP+T FAQ
1.How can I place an order for MAX394CWP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394CWP+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 MAX394CWP+T reliable?
The price and inventory of MAX394CWP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394CWP+T is usually 5 days.
3.What payment methods are accepted for MAX394CWP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394CWP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394CWP+T?
MAX394CWP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394CWP+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 MAX394CWP+T?
For technical support, including MAX394CWP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394CWP+T requirements.
6.How does Aetrix verify that MAX394CWP+T is sourced from the original manufacturer or authorized distributors?
All MAX394CWP+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 MAX394CWP+T meets industry standards.
7.What is the process for return or replacement of MAX394CWP+T?
All MAX394CWP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX394CWP+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 MAX394CWP+T part is unused and in its original packaging.
Return procedure for MAX394CWP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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