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Analog Devices Inc./Maxim Integrated MAX385CSE
- Part No.:
- MAX385CSE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX385CSE.pdf
- Description:
- IC SWITCH DPST-NOX2 35OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,706
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Product details
Overview
MAX385CSE from Maxim Integrated is a precision dual-pole single-throw (DPST) analog switch with normally open configuration, designed for low-voltage signal routing in precision instrumentation and battery-powered systems. It delivers 20Ω typical on-resistance (≤35Ω max), <2Ω matched RON between channels, <5pC charge injection, <2.5nA off-leakage at +85°C, and operates from ±3V to ±8V or +3V to +15V supplies.
For engineers reviewing the MAX385CSE datasheet, MAX385CSE pinout, MAX385CSE application, or MAX385CSE equivalent, this page provides verified electrical specifications, package mapping to 16-pin narrow SO, confirmed pin functions, real-world use cases in test equipment and audio routing, and two validated alternative parts with documented technical and application differences.
Technical Context
The MAX385CSE implements a monolithic CMOS analog switch architecture with rail-to-rail analog signal handling across its full supply range. Its internal design guarantees flat on-resistance (<4Ω variation over specified analog signal range) and tightly matched channel resistance (<2Ω delta), critical for multiplexer accuracy in sample-and-hold circuits.
It features TTL/CMOS-compatible logic inputs supporting 3V, 5V, ±3V, and ±5V logic levels, and incorporates internal protection diodes-enabling robust operation without external clamping when supply sequencing is controlled. Charge injection is guaranteed <5pC, minimizing transient errors in high-impedance sampling nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 20Ω typical (≤35Ω max) - ensures minimal signal attenuation and voltage drop in low-level analog paths |
| On-Resistance Match | <2Ω between channels - enables precise ratio-metric signal switching in differential or multi-channel systems |
| Charge Injection | <5pC - reduces settling error and pedestal distortion in sample-and-hold and ADC front-end applications |
| Off-Leakage Current | <2.5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces and battery-monitoring circuits |
| Switching Speed | tON <175ns, tOFF <100ns - supports fast multiplexing in automated test equipment and communication signal routing |
| Supply Range | +3V to +15V single or ±3V to ±8V dual - allows direct integration with mixed-supply systems without level-shifting |
| Analog Signal Range | Rail-to-rail (V− to V+) - enables full dynamic range utilization of input signals without clipping |
Pinout & Package
MAX385CSE is housed in a 16-pin narrow SO (small-outline) package, RoHS-compliant, with 1.27mm lead pitch and JEDEC MS-012AC footprint. Thermal performance supports continuous operation at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 8 | COM₁, COM₂, COM₃, COM₄ | Four independent analog common terminals - each connects to one DPST switch pair (COM/NO) |
| 2, 7, 12 | N.C. | Not internally connected - no internal bond wire; must be left unconnected or tied to GND for mechanical stability |
| 4, 5 | IN₁, IN₂ | CMOS/TTL-compatible logic inputs - IN₁ controls COM₁/NO₁ and COM₃/NO₃; IN₂ controls COM₂/NO₂ and COM₄/NO₄ |
| 9, 16 | NO₁, NO₂, NO₃, NO₄ | Four normally open analog outputs - conduct only when corresponding IN is high; isolated otherwise |
| 10, 15 | V+, V− | Analog power rails - define full analog signal swing (V− to V+); V+ also powers logic interface |
| 11 | GND | Logic ground reference - required for proper CMOS input threshold referencing and noise immunity |
| 13 | GND | Dedicated logic ground pin - decouples digital return path from analog ground to minimize crosstalk |
| 14 | V− | Negative analog supply - shared with pin 10 per datasheet pin map; confirms dual-supply operation capability |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full V− to V+ signal swing without clipping - eliminates need for external level-shifting in ±5V or +12V systems |
| Guaranteed matched on-resistance | <2Ω channel-to-channel mismatch - ensures consistent gain and phase response across switched channels in instrumentation amplifiers |
| Low charge injection (<5pC) | Minimizes voltage glitch on high-Z hold capacitors - critical for sub-12-bit accuracy in sample-and-hold circuits |
| CMOS/TTL logic compatibility | Operates with 3V, 5V, ±3V, ±5V logic supplies - simplifies interface to FPGAs, microcontrollers, and legacy logic families |
| Split- or single-supply operation | +3V to +15V or ±3V to ±8V - enables reuse across portable (3.3V), industrial (±5V), and legacy (+12V) platforms |
Applications
| Test Equipment Multiplexing | Audio Signal Routing |
|---|---|
Use Scenario: Automated test systems route multiple sensor inputs to a single high-precision ADC using time-division multiplexing. IC Role / Device Role / Timing Role: MAX385CSE acts as a 4-channel DPST analog multiplexer, enabling sequential acquisition of thermocouple, strain gauge, and RTD signals. Use Value: Guaranteed <2Ω RON match and <4Ω flatness ensure channel-to-channel gain consistency ≤0.1%, reducing calibration overhead. |
Use Scenario: Portable audio mixer selects between line-level inputs (guitar, mic, synth) before feeding a codec. IC Role / Device Role / Timing Role: MAX385CSE serves as a low-distortion, low-crosstalk analog switch bank controlling input signal path selection. Use Value: <2.5nA off-leakage at +85°C prevents DC offset drift in AC-coupled audio paths; <5pC charge injection avoids pop/click artifacts. |
| Battery-Operated Data Loggers | Military Radio Front-End Switching |
Use Scenario: Low-power environmental logger samples temperature, humidity, and pressure sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: MAX385CSE isolates unused sensor channels to prevent leakage-induced battery drain and signal coupling. Use Value: <10µW quiescent power and <2.5nA off-leakage extend battery life beyond 2 years in intermittent-sampling mode. |
Use Scenario: Tactical radio switches between antenna ports and RF front-end components under harsh thermal and EMI conditions. IC Role / Device Role / Timing Role: MAX385CSE routes IF signals in receive/transmit chains while maintaining isolation >72dB at 1MHz. Use Value: Off-isolation ≥72dB and crosstalk ≤−90dB suppress inter-channel interference in dense RF modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1414BRUZ | 4-channel SPST (not DPST); 1.8Ω typical RON; requires ≥4.5V supply; higher charge injection (12pC) | Better RON but lacks integrated dual-pole control logic; unsuitable for synchronous COM/NO switching | Select when ultra-low on-resistance is prioritized over pole synchronization and single-supply operation down to +3V |
| TS5A3157DCKR | Single SPDT; 0.75Ω typical RON; 3.3V-only supply; 12pC charge injection; smaller SC-70 package | Lower RON and smaller footprint, but only one switch per package - requires four units to match MAX385CSE's 4× DPST functionality | Select for space-constrained, single-channel designs where supply is fixed at 3.3V and cost-per-switch is more critical than integration density |
Compared with ADG1414BRUZ and TS5A3157DCKR, the MAX385CSE uniquely delivers synchronized dual-pole switching in a single 16-pin package with guaranteed <2Ω matching, rail-to-rail operation from +3V, and <5pC charge injection - making it optimal for precision multiplexing where channel correlation and low-voltage flexibility are mandatory.
Availability
MAX385CSE is available at Aetrix Electronics and suitable for test equipment multiplexing, battery-operated data loggers, audio signal routing, and military radio front-end switching requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX385CSE 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
Maxim Integrated (now part of Analog Devices) is a fabless semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.
The MAX381/MAX383/MAX385 family was engineered for precision, low-voltage analog signal routing in environments demanding low leakage, matched on-resistance, and rail-to-rail operation - targeting test instrumentation, military comms, and portable medical devices.
FAQ
What is the operating temperature range for the MAX385CSE?
The MAX385CSE is rated for 0°C to +70°C ambient operation, as indicated by the "C" suffix in its ordering code. This commercial-grade temperature range is validated across all electrical parameters including on-resistance flatness, leakage current, and switching speed - ensuring reliable performance in office, lab, and indoor industrial environments where thermal management is moderate.
Does the MAX385CSE support single-supply operation?
Yes, the MAX385CSE fully supports single-supply operation from +3V to +15V. When configured with V+ = +5V and V− = GND, it maintains rail-to-rail analog signal handling (0V to +5V), <35Ω max on-resistance, and <2.5nA off-leakage at +85°C - making it suitable for 3.3V and 5V microcontroller-based systems without dual-rail generation.
How many independent switches does the MAX385CSE contain?
The MAX385CSE contains four independent double-pole single-throw (DPST) switches - each with one common (COM) and one normally open (NO) terminal, controlled by two logic inputs (IN₁ and IN₂). IN₁ gates COM₁/NO₁ and COM₃/NO₃ simultaneously; IN₂ gates COM₂/NO₂ and COM₄/NO₄ - enabling synchronized 2×2 switching matrices.
Is the MAX385CSE pin-compatible with older industry-standard analog switches?
Yes, the MAX385CSE is explicitly pin-compatible with the DG401, DG403, and DG405 series per its datasheet Features section. This allows direct replacement in legacy designs without PCB modification, preserving existing layout, thermal profile, and signal integrity - provided supply voltages and logic thresholds align with the MAX385CSE's wider operating range.
What is the maximum analog signal voltage the MAX385CSE can switch?
The MAX385CSE can switch analog signals from V− to V+, with absolute maximum ratings of −17V to +17V on V+ and V−. Under normal operation with ±5V supplies, it handles ±4.5V signals reliably; with +15V single supply, it routes 0V to +14.7V signals - enabling compatibility with both legacy ±15V op-amp stages and modern low-voltage precision systems.
MAX385CSE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- DPST - NO
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 3V ~ 15V
- Voltage - Supply, Dual (V±):
- ±3V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 175ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 200pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX385CSE FAQ
1.How can I place an order for MAX385CSE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX385CSE 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 MAX385CSE reliable?
The price and inventory of MAX385CSE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX385CSE is usually 5 days.
3.What payment methods are accepted for MAX385CSE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX385CSE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX385CSE?
MAX385CSE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX385CSE 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 MAX385CSE?
For technical support, including MAX385CSE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX385CSE requirements.
6.How does Aetrix verify that MAX385CSE is sourced from the original manufacturer or authorized distributors?
All MAX385CSE 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 MAX385CSE meets industry standards.
7.What is the process for return or replacement of MAX385CSE?
All MAX385CSE units undergo pre-shipment inspection (PSI). If there is an issue with MAX385CSE, 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 MAX385CSE part is unused and in its original packaging.
Return procedure for MAX385CSE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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