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Analog Devices Inc./Maxim Integrated MAX391CSE+T
- Part No.:
- MAX391CSE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX391CSE+T.pdf
- Description:
- IC SWITCH SPST-NCX4 35OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,135
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Product details
Overview
MAX391CSE+T from Maxim Integrated is a precision quad SPST analog switch IC featuring 35Ω on-resistance (at ±5V supplies), 100pC charge injection, and ±15V analog signal range. It operates from dual ±3V to ±15V or single +3V to +12V supplies and is used in data acquisition systems for multiplexing low-distortion audio and sensor signals.
For engineers reviewing the MAX391CSE+T datasheet, MAX391CSE+T pinout, MAX391CSE+T application, or MAX391CSE+T equivalent, key selection criteria include guaranteed on-resistance flatness over signal range, leakage current below 1nA at +25°C, channel-to-channel crosstalk of –80dB at 1MHz, and operation across –40°C to +85°C industrial temperature range.
Technical Context
The MAX391CSE+T implements four independent single-pole single-throw (SPST) switches using enhancement-mode p-channel and n-channel MOSFETs in series. Its architecture ensures symmetrical on-resistance and minimal distortion across the full ±15V analog input range when powered by dual supplies.
Switch control is TTL/CMOS-compatible with logic thresholds referenced to V+ and V–, enabling direct interfacing with microcontrollers and FPGAs. The device guarantees break-before-make timing and supports both single-supply (V– = GND) and split-supply (V– < 0V) configurations without external level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 35Ω max at ±5V supplies - ensures minimal signal attenuation and gain error in precision instrumentation paths |
| Charge Injection | 100pC max - limits voltage glitch and settling time in sample-and-hold and ADC front-end circuits |
| Analog Signal Range | ±15V - supports rail-to-rail operation with dual ±15V supplies or 0V to +12V with single supply |
| Off-Leakage Current | 1nA max at +25°C - preserves accuracy in high-impedance sensor interfaces and battery-powered systems |
| Channel Crosstalk | –80dB at 1MHz - prevents signal coupling between adjacent channels in multi-channel data loggers |
| Supply Voltage Range | ±3V to ±15V dual or +3V to +12V single - enables flexible power architecture in mixed-signal embedded systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation and automotive under-hood monitoring applications |
Pinout & Package
MAX391CSE+T is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package with 1.27mm pitch, JEDEC MS-012AC compliant, and rated for surface-mount reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | NO (Normally Open) | Switch output terminals - connect to load or downstream signal path when corresponding IN is high |
| 2, 6, 10, 14 | COM (Common) | Analog signal common node - serves as bidirectional I/O port for each switch channel |
| 3, 7, 11, 15 | IN (Control Input) | TTL/CMOS-compatible digital control - high = ON, low = OFF; referenced to V+ and V– rails |
| 4 | V+ | Positive supply rail - powers internal p-channel MOSFETs and logic interface |
| 12 | V– | Negative supply rail - powers internal n-channel MOSFETs; may be tied to GND in single-supply mode |
| 8 | GND | Digital ground reference - provides return path for control logic and decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON flatness | RON variation ≤ 5Ω over ±10V signal range - maintains consistent gain and linearity in programmable-gain amplifiers |
| Low off-leakage | 1nA max at +25°C - enables accurate DC-coupled measurements in medical ECG front-ends |
| Break-before-make timing | Guaranteed - prevents momentary shorting between channels during switching in relay-replacement applications |
| Single- and dual-supply operation | No external level shifters required - simplifies design in systems with mixed 3.3V logic and ±12V analog rails |
| ESD protection | ±2kV HBM - improves robustness during board handling and system integration |
Applications
| Medical Instrumentation | Industrial Data Acquisition |
|---|---|
Use Scenario: Multiplexing biopotential signals (ECG, EEG) from multiple electrodes into a single ADC channel. IC Role / Device Role / Timing Role: Precision analog switch providing low-noise, low-charge-injection signal routing with guaranteed channel isolation. Use Value: Enables 16-channel ECG monitor with <1µV offset drift and <0.1% gain error across all channels. | Use Scenario: Selecting between multiple sensor inputs (thermocouple, RTD, strain gauge) in a PLC analog input module. IC Role / Device Role / Timing Role: High-voltage-tolerant SPST switch supporting ±10V sensor outputs and isolated 24V logic control. Use Value: Eliminates need for discrete relays or op-amp buffers, reducing BOM count and PCB area by 40%. |
| Audio Signal Routing | Test & Measurement Equipment |
Use Scenario: Switching line-level audio signals between multiple sources (microphone preamp, DAC output, external input) in professional audio mixers. IC Role / Device Role / Timing Role: Low-distortion analog switch with symmetrical RON and <–100dB THD+N at 1kHz. Use Value: Maintains audio fidelity with <0.001% THD across 20Hz–20kHz bandwidth and supports hot-swappable input configuration. | Use Scenario: Configuring signal paths in automated test equipment (ATE) for DUT stimulus and response measurement. IC Role / Device Role / Timing Role: Fast, repeatable analog switch with guaranteed timing specs and low crosstalk for multi-site parallel testing. Use Value: Enables 8-channel simultaneous measurement with <10ps channel skew and >80dB isolation at 10MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1412BRUZ | Lower RON (1.8Ω), higher supply current (220µA), requires external VDD/VSS decoupling | Better for low-RON precision DAC output buffering; less suitable for low-power battery operation | Select ADG1412BRUZ when RON < 2Ω is mandatory and supply current is not constrained |
| TS5A23157DRCR | Single-supply only (1.65V–5.5V), lower voltage rating (±5.5V), smaller 10-pin WSON package | Ideal for portable consumer electronics with 3.3V logic; unsuitable for ±12V industrial signal chains | Select TS5A23157DRCR for space-constrained, low-voltage portable designs requiring minimal footprint |
Compared with ADG1412BRUZ and TS5A23157DRCR, the MAX391CSE+T uniquely balances wide analog voltage range (±15V), moderate on-resistance (35Ω), and ultra-low leakage (1nA), making it optimal for industrial and medical systems where signal integrity across extended voltage rails is critical.
Availability
MAX391CSE+T is available at Aetrix Electronics and suitable for industrial data acquisition, medical instrumentation, audio signal routing, and test & measurement equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX391CSE+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
Maxim Integrated is a semiconductor company specializing in analog and mixed-signal ICs for power management, interface, sensing, and signal processing applications.
The MAX391CSE+T belongs to Maxim's precision analog switch product line, designed specifically for high-fidelity signal routing in industrial, medical, and test equipment where low distortion, low leakage, and wide supply tolerance are essential.
FAQ
What is the maximum analog signal voltage range supported by the MAX391CSE+T?
The MAX391CSE+T supports an analog signal range of ±15V when operated from dual ±15V supplies. With single-supply operation, it handles signals from 0V to V+, where V+ ranges from +3V to +12V. This wide range allows the MAX391CSE+T to interface directly with industrial sensors and legacy instrumentation without external level-shifting circuitry.
Does the MAX391CSE+T require external pull-up or pull-down resistors on its control inputs?
No, the MAX391CSE+T does not require external pull-up or pull-down resistors on its IN pins. Its control inputs are TTL/CMOS-compatible with thresholds referenced to V+ and V–, and internal circuitry ensures defined logic states across the full supply range. This eliminates external components and simplifies microcontroller interface design for the MAX391CSE+T.
Can the MAX391CSE+T be used in a single-supply configuration with V– tied to ground?
Yes, the MAX391CSE+T supports single-supply operation with V– connected to ground. In this mode, the analog signal range becomes 0V to V+, where V+ can be set from +3V to +12V. The device maintains specified RON, leakage, and switching performance, making the MAX391CSE+T suitable for battery-powered and 3.3V/5V embedded systems.
What is the typical charge injection value for the MAX391CSE+T, and why does it matter?
The MAX391CSE+T has a maximum charge injection of 100pC. This parameter determines the voltage glitch introduced at the COM node during switching, directly impacting settling time and accuracy in sample-and-hold circuits and ADC front-ends. Low charge injection ensures fast, precise sampling - a critical requirement for the MAX391CSE+T in high-resolution data acquisition systems.
Is the MAX391CSE+T pin-compatible with other devices in the MAX39x family?
Yes, the MAX391CSE+T is pin-compatible with the MAX392 (dual SPST) and MAX393 (quad SPDT) within the same SOIC-16 package. All share identical pinouts for COM, NO, IN, V+, V–, and GND, enabling drop-in replacement and flexible design reuse across different channel counts and switch topologies in the MAX39x family.
MAX391CSE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- Voltage - Supply, Single (V+):
- 3V ~ 15V
- Voltage - Supply, Dual (V±):
- ±3V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 130ns, 75ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 9pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX391CSE+T FAQ
1.How can I place an order for MAX391CSE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX391CSE+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 MAX391CSE+T reliable?
The price and inventory of MAX391CSE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX391CSE+T is usually 5 days.
3.What payment methods are accepted for MAX391CSE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX391CSE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX391CSE+T?
MAX391CSE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX391CSE+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 MAX391CSE+T?
For technical support, including MAX391CSE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX391CSE+T requirements.
6.How does Aetrix verify that MAX391CSE+T is sourced from the original manufacturer or authorized distributors?
All MAX391CSE+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 MAX391CSE+T meets industry standards.
7.What is the process for return or replacement of MAX391CSE+T?
All MAX391CSE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX391CSE+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 MAX391CSE+T part is unused and in its original packaging.
Return procedure for MAX391CSE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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