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Analog Devices Inc./Maxim Integrated MAX394CAP+T
- Part No.:
- MAX394CAP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX394CAP+T.pdf
- Description:
- IC SWITCH SPDT X 4 35OHM 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,933
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Product details
Overview
The MAX394CAP+T from Analog Devices is a precision, low-voltage, quad SPDT analog switch optimized for 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 and <75ns turn-off time. It is used in audio signal routing and heads-up displays where low distortion and fast switching are critical.
For engineers reviewing the MAX394CAP+T datasheet, MAX394CAP+T pinout, MAX394CAP+T application, or MAX394CAP+T equivalent, key selection criteria include guaranteed on-resistance flatness (Δ4Ω max), break-before-make timing (10ns typ), TTL/CMOS logic compatibility across supply ranges, and ESD robustness (>2000V).
Technical Context
The MAX394CAP+T 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 of +0.8V to +2.4V (≤+8V supplies) or +0.8V to +4V (>+8V supplies).
Its architecture guarantees matched on-resistance (<2Ω ΔRON) and flat on-resistance (Δ4Ω max) over the full analog signal range, enabling precision multiplexing in instrumentation. Break-before-make switching prevents signal shorting during state transitions, and ultra-low quiescent current (<1μA) supports battery-powered operation.
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 at ±4.5V - ensures minimal signal attenuation and voltage drop in precision analog paths |
| On-Resistance Match | <2Ω between channels - critical for matched gain/attenuation in differential or multi-channel routing |
| Charge Injection | <10pC - reduces glitch-induced settling errors in sample-and-hold or ADC front-end applications |
| Turn-Off Time (max) | 75ns - supports high-speed signal switching in communications and test equipment |
| ESD Rating | >2000V per Method 3015.7 - enhances reliability in handling-sensitive production and field environments |
| Logic Compatibility | TTL/CMOS inputs with guaranteed +0.8V to +2.4V thresholds up to +8V supply - simplifies interface with legacy and modern controllers |
Pinout & Package
MAX394CAP+T is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, footprint-compatible with industry-standard 20-lead SSOP layouts and suitable for high-density PCB designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10, 11, 20 | IN1–IN4 | Independent logic control inputs for each SPDT switch - enable individual channel activation with standard digital levels |
| 2, 9, 12, 19 | NO1–NO4 | Normally open switch terminals - connect to signal path only when corresponding INx = high |
| 3, 8, 13, 18 | COM1–COM4 | Common poles - serve as bidirectional analog I/O nodes routed to either NOx or NCx based on logic state |
| 4, 7, 14, 17 | NC1–NC4 | Normally closed switch terminals - provide default signal path when INx = low; not internally connected to substrate |
| 5 | V− | Negative supply rail - must be established before analog/logic signals to prevent latch-up |
| 6 | GND | Ground reference - serves as return path for logic and internal bias networks |
| 15 | N.C. | No internal connection - left unconnected on PCB; no electrical function |
| 16 | V+ | Positive supply rail - powers analog core and input buffers; supports up to +15V single-supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ without clipping or distortion - essential for full-scale sensor or audio signal routing |
| Break-before-make switching | 10ns typical delay prevents momentary shorting between NO and NC paths - eliminates signal crosstalk during transition |
| Guaranteed on-resistance flatness | Δ4Ω max over full analog range - maintains consistent gain/attenuation across input voltage swing in precision amplifiers |
| Ultra-low quiescent current | <1μA with all inputs high or low - extends battery life in portable instruments and handheld test gear |
| ESD robustness | >2000V HBM - reduces field failure risk during assembly, handling, and end-user operation |
Applications
| Test Equipment | Communications Systems |
|---|---|
Use Scenario: Automated test fixtures requiring reconfigurable signal paths for DUT stimulus/response routing. IC Role / Device Role / Timing Role: Quad SPDT switch providing programmable interconnect between signal generators, DMMs, and DUT interfaces. Use Value: Low on-resistance (<35Ω) and flat RON ensure measurement accuracy; break-before-make prevents transient shorts during path changes. |
Use Scenario: Signal routing in baseband processing modules of cellular infrastructure and point-to-point radios. IC Role / Device Role / Timing Role: Channel selector for RF front-end calibration paths and antenna diversity switching. Use Value: 10pC charge injection minimizes DAC/ADC corruption; rail-to-rail support accommodates wide dynamic range IF signals. |
| PBX/PABX Systems | Heads-Up Displays |
Use Scenario: Audio path management in enterprise telephony systems with multiple line cards and conferencing resources. IC Role / Device Role / Timing Role: Analog switch matrix enabling dynamic assignment of microphone, speaker, and codec channels. Use Value: TTL/CMOS compatibility allows direct interface with FPGA GPIO; <2Ω RON match preserves stereo balance across channels. |
Use Scenario: Video signal selection between HUD controller outputs and display driver inputs in automotive cockpit systems. IC Role / Device Role / Timing Role: High-fidelity analog multiplexer routing RGB or LVDS video streams with minimal skew or distortion. Use Value: 75ns max turn-off time supports real-time video frame switching; ESD >2000V withstands automotive ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX333ACPP+ | 20-pin DIP package; identical pinout but wider temperature range (0°C to +70°C same); slightly higher RON (40Ω max) | Preferred for through-hole prototyping or legacy DIP-based test fixtures | Select when board layout requires DIP footprint or when higher on-resistance is acceptable for non-precision paths |
| ADG1412BRUZ | Quad SPDT, 12V max supply, 1.8Ω typical RON, but no guaranteed RON match or flatness spec; different pinout | Better for low-RON priority in industrial PLC I/O modules where matching is less critical | Choose only if ultra-low resistance outweighs need for channel matching and flatness guarantees |
Compared with MAX333ACPP+, the MAX394CAP+T offers tighter on-resistance matching and flatness for precision instrumentation; compared with ADG1412BRUZ, it provides documented matching and ESD specs critical for portable and test environments - but requires SSOP layout adaptation.
Availability
MAX394CAP+T is available at Aetrix Electronics and suitable for test equipment, communications systems, PBX/PABX infrastructure, and heads-up displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX394CAP+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 automation, and communications markets since 1965.
The MAX394CAP+T belongs to Analog Devices' precision analog switch product line, engineered for low-distortion, low-leakage signal routing in portable, test, and telecom applications where parameter matching and reliability are design-critical.
FAQ
What is the maximum supply voltage rating for MAX394CAP+T?
The MAX394CAP+T supports a maximum total supply voltage (V+ to V−) of 17V. For bipolar operation, this translates to ±8V; for single-supply use, it allows up to +15V with V− tied to GND. Exceeding 17V risks permanent damage, as specified in the Absolute Maximum Ratings table.
Does MAX394CAP+T support rail-to-rail analog signal switching?
Yes, the MAX394CAP+T supports rail-to-rail analog signal handling: signals applied to COM, NO, or NC pins may range continuously from V− to V+ without damage or performance degradation, provided absolute maximum ratings are observed.
What is the guaranteed on-resistance matching between channels for MAX394CAP+T?
The MAX394CAP+T guarantees on-resistance matching of less than 2Ω between any two channels under specified conditions (V+ = 5V, V− = −5V, VNO/VNC = ±3V, ICOM = 10mA, TA = +25°C). This is tested and specified across temperature for C-grade devices.
Is MAX394CAP+T pin-compatible with other variants in the MAX394 family?
Yes, MAX394CAP+T shares identical 20-pin SSOP pinout with MAX394EAP+, MAX394CAP+, and MAX394EAP+T. All share the same pin configuration, logic behavior, and electrical specifications within their respective temperature grades.
What logic voltage levels are compatible with MAX394CAP+T inputs?
MAX394CAP+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 typically extends to +4V. Input currents remain below ±1.0μA across the full operating range.
MAX394CAP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
MAX394CAP+T FAQ
1.How can I place an order for MAX394CAP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX394CAP+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 MAX394CAP+T reliable?
The price and inventory of MAX394CAP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX394CAP+T is usually 5 days.
3.What payment methods are accepted for MAX394CAP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX394CAP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX394CAP+T?
MAX394CAP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX394CAP+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 MAX394CAP+T?
For technical support, including MAX394CAP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX394CAP+T requirements.
6.How does Aetrix verify that MAX394CAP+T is sourced from the original manufacturer or authorized distributors?
All MAX394CAP+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 MAX394CAP+T meets industry standards.
7.What is the process for return or replacement of MAX394CAP+T?
All MAX394CAP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX394CAP+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 MAX394CAP+T part is unused and in its original packaging.
Return procedure for MAX394CAP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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