My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX394CWP+
- Part No.:
- MAX394CWP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX394CWP+.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:613
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX394CWP+ 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, ≤4Ω flatness, and <10pC charge injection - enabling high-fidelity audio and instrumentation signal paths.
For engineers reviewing the MAX394CWP+ datasheet, MAX394CWP+ pinout, MAX394CWP+ application, or MAX394CWP+ equivalent, key selection criteria include guaranteed break-before-make timing (10ns typ), sub-75ns turn-off, <1μA quiescent current, ESD >2000V, and compatibility with TTL/CMOS logic across supply ranges.
Technical Context
The MAX394CWP+ integrates four independent CMOS SPDT switches fabricated using low-voltage silicon-gate process, supporting both single- and dual-supply operation without level-shifting circuitry. Its architecture guarantees matched on-resistance (≤2Ω) and flat RON (Δ4Ω max) over full analog signal range (V– to V+), critical for precision multiplexing and gain-switching applications.
Logic inputs are TTL/CMOS-compatible across supply voltages: +0.8V to +2.4V for V+ ≤ +8V, extending to +0.8V to +4V at higher supplies. All analog pins tolerate signals from V– – 2V to V+ + 2V, with internal clamping diodes limiting forward current to 30mA continuous.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 35Ω at ±4.5V supplies - ensures minimal signal attenuation and gain error in precision analog paths |
| On-Resistance Match | ≤2Ω between channels - enables accurate differential switching and ratiometric measurements |
| 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 during channel switching in sensitive signal chains |
| Off-Leakage Current | <2.5nA at +85°C - maintains signal integrity in high-impedance sensor interfaces and battery-powered systems |
| ESD Rating | >2000V per Method 3015.7 - supports robust handling in manufacturing and field-deployed instrumentation |
| Supply Range | ±2.7V to ±8V or +2.7V to +15V - accommodates legacy ±5V, modern 3.3V/5V, and extended-range industrial rails |
Pinout & Package
MAX394CWP+ is housed in a 20-pin Wide SO (SOIC-W) package (package code W26-1), RoHS-compliant, with exposed substrate tied to V+. Pin pitch is 1.27mm; body width is 7.5mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Active-high digital control inputs; TTL/CMOS compatible; drive internal switch gates |
| 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 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; sets lower analog signal limit |
| 6 | GND | Ground reference; used as return path in single-supply configurations |
| 15 | N.C. | No internal connection; must be left floating or grounded per layout best practice |
| 16 | V+ | Positive power supply rail; sets upper analog signal limit; substrate tied to this pin |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ without clipping - essential for full-scale dynamic range in data acquisition |
| Guaranteed flat on-resistance | Δ4Ω max over full analog range - eliminates amplitude distortion in variable-gain amplifiers and programmable filters |
| Low quiescent current | <1μA with all inputs high/low - extends battery life in portable test instruments and handheld meters |
| Break-before-make switching | 10ns typical delay - prevents signal shorting in audio crosspoint matrices and relay-replacement circuits |
| Pin compatibility with MAX333/MAX333A | Enables drop-in upgrade path with improved RON, leakage, and ESD performance - simplifies legacy design refresh |
Applications
| Test Equipment Multiplexing | Portable Audio Signal Routing |
|---|---|
Use Scenario: High-accuracy automated test systems requiring sequential connection of DUTs to shared measurement resources. IC Role / Device Role / Timing Role: Quad SPDT switch routing analog test signals (voltage/current) between multiple sensors and a single precision ADC/DAC. Use Value: ≤2Ω channel matching and Δ4Ω RON flatness ensure consistent gain and offset across channels, reducing calibration overhead. |
Use Scenario: Battery-powered audio mixers or headphone amplifiers needing flexible input/output source selection. IC Role / Device Role / Timing Role: Low-distortion analog switch managing line-level or mic-level signal paths with minimal crosstalk and charge injection. Use Value: <10pC charge injection and 88dBm crosstalk at 1MHz preserve audio fidelity; <1μA IQ extends runtime in USB-C powered devices. |
| Heads-Up Display (HUD) Interface | Communications System Channel Selection |
Use Scenario: Automotive HUD controllers selecting between multiple video sources (camera, navigation, ADAS) for projection. IC Role / Device Role / Timing Role: Rail-to-rail SPDT switch routing composite or LVDS video signals while maintaining DC-coupled integrity. Use Value: V− to V+ analog range support enables direct interface with unbuffered video drivers; ESD >2000V withstands automotive EMI environments. |
Use Scenario: Base station transceivers dynamically assigning RF front-end components (filters, LNAs, PAs) across frequency bands. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating signal paths during band-switching sequences to prevent intermodulation. Use Value: <2.5nA off-leakage at +85°C ensures stable bias points in temperature-sensitive RF stages; 66dBm off-isolation suppresses adjacent-channel interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333ACPP+ | Higher max on-resistance (45Ω), wider temp range (−40°C to +85°C), same 20-pin DIP package | Better suited for industrial environments requiring extended temperature operation; less optimal for low-distortion audio | Select for legacy DIP-based designs needing broader temp range; avoid where <35Ω RON or <10pC charge injection is mandatory |
| ADG1412BRUZ | Lower on-resistance (1.3Ω typ), higher supply voltage limit (+36V), 16-pin TSSOP, no NC pins (SPST configuration) | Optimized for high-voltage industrial automation; lacks NC functionality and quad SPDT topology of MAX394CWP+ | Choose when ultra-low RON and high-voltage tolerance outweigh need for SPDT topology and NC routing flexibility |
Compared with MAX394CWP+, MAX333ACPP+ offers extended temperature capability but trades off on-resistance and charge injection performance, while ADG1412BRUZ provides superior RON and voltage range but abandons SPDT/NC architecture - making MAX394CWP+ uniquely balanced for precision, low-power, multi-path analog routing.
Availability
MAX394CWP+ is available at Aetrix Electronics and suitable for test equipment, portable instruments, heads-up displays, and communications systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX394CWP+ 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 technologies, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX394CWP+ belongs to Analog Devices' precision analog switch product line, engineered specifically for low-voltage, low-distortion signal routing in portable and high-accuracy instrumentation applications.
FAQ
What supply voltage ranges does the MAX394CWP+ support?
The MAX394CWP+ supports bipolar supplies from ±2.7V to ±8V and single supplies from +2.7V to +15V. It maintains rail-to-rail analog signal handling across these ranges, with logic inputs guaranteed compatible from +0.8V to +2.4V (up to +8V supplies) or +0.8V to +4V (above +8V). Absolute maximum ratings specify V+ to V− ≤ 17V.
How does the MAX394CWP+ achieve low charge injection, and why does it matter?
The MAX394CWP+ achieves <10pC typical charge injection through optimized CMOS gate design and low-voltage silicon-gate process. This minimizes voltage glitches on high-impedance nodes during switching - critical in sample-and-hold circuits, programmable-gain amplifiers, and precision ADC front-ends where even picocoulomb-level injection causes measurable settling errors.
Is the MAX394CWP+ pin-compatible with other Maxim analog switches?
Yes, the MAX394CWP+ is explicitly pin-compatible with the MAX333 and MAX333A, sharing identical 20-pin Wide SO pinout and terminal functions. This allows direct replacement in existing designs to improve on-resistance, leakage, and ESD performance without PCB modifications.
What is the maximum operating temperature for the MAX394CWP+?
The MAX394CWP+ is rated for operation from 0°C to +70°C ambient temperature (Commercial grade). Its electrical specifications - including on-resistance match (≤4Ω), off-leakage (<2.5nA), and charge injection (<10pC) - are fully guaranteed across this range per the datasheet's "C" suffix designation.
Can the MAX394CWP+ be used in single-supply 3.3V systems?
Yes, the MAX394CWP+ operates reliably from +2.7V to +3.6V single supply. At +3.3V, on-resistance rises to 185Ω (max), turn-on time extends to 400ns (typ), and charge injection drops to 5pC (typ). These values remain within specification and support low-power portable applications where speed and RON trade-offs are acceptable.
MAX394CWP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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+ FAQ
1.How can I place an order for MAX394CWP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394CWP+ 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+ reliable?
The price and inventory of MAX394CWP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394CWP+ is usually 5 days.
3.What payment methods are accepted for MAX394CWP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394CWP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394CWP+?
MAX394CWP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394CWP+ 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+?
For technical support, including MAX394CWP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394CWP+ requirements.
6.How does Aetrix verify that MAX394CWP+ is sourced from the original manufacturer or authorized distributors?
All MAX394CWP+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX394CWP+?
All MAX394CWP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX394CWP+, 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+ part is unused and in its original packaging.
Return procedure for MAX394CWP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX394CWP+ Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
