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Analog Devices Inc./Maxim Integrated MAX391EUE+T
- Part No.:
- MAX391EUE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX391EUE+T.pdf
- Description:
- IC SW SPST-NCX4 35OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,005
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Product details
Overview
MAX391EUE+T from Maxim Integrated is a precision quad SPST analog switch IC designed for low-leakage, low-charge-injection signal routing in ±5V dual-supply or +5V single-supply systems. It features 100Ω on-resistance (typ), <1pC charge injection, ±10nA max off-leakage at +25°C, and operates across –40°C to +85°C. It is used in data acquisition front-ends, precision instrumentation multiplexing, and automatic test equipment.
For engineers reviewing the MAX391EUE+T datasheet, MAX391EUE+T pinout, MAX391EUE+T application, or MAX391EUE+T equivalent, key selection criteria include guaranteed RON flatness over signal range, sub-pC charge injection for minimal settling error, rail-to-rail analog signal handling, and compatibility with both dual- and single-supply configurations.
Technical Context
The MAX391EUE+T implements four independent, normally-open analog switches using enhanced CMOS process technology optimized for low distortion and high channel-to-channel isolation (>70dB at 1MHz). Its control logic accepts TTL/CMOS-compatible inputs referenced to V+, enabling direct interfacing with microcontrollers without level-shifting.
Switch operation is fully specified over ±5V dual supplies (V+ = +5V, V– = –5V) and +5V single supply (V– = 0V), with guaranteed performance across the full analog input range (VCOM = ±4.5V or 0V to +4.5V). Leakage and RON are characterized from –55°C to +125°C per MIL-STD-883 methods.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RON (max) | 120Ω - Ensures minimal signal attenuation and gain error in precision gain-setting or sensor interface paths. |
| Charge injection | <1pC - Limits voltage glitch and settling time in sample-and-hold or ADC input stages. |
| Off-leakage current | ±10nA (max at +25°C) - Preserves accuracy in high-impedance sensor or reference voltage routing. |
| On-leakage current | ±1nA (max at +25°C) - Maintains signal integrity in low-current measurement circuits. |
| Supply current | 10μA (max) - Enables ultra-low-power operation in battery-powered instrumentation. |
| Bandwidth | 30MHz - Supports fast-switching applications such as video signal routing or pulse modulation. |
| Channel isolation | 70dB @ 1MHz - Prevents crosstalk between adjacent channels in multi-channel data loggers. |
Pinout & Package
MAX391EUE+T is housed in a 16-pin TSSOP (Thin Shrink Small Outline Package) with 0.65mm pitch, JEDEC MO-153 compliant, footprint compatible with industry-standard 16-TSSOP layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | NO (Normally Open) | Switch output terminals; open when IN = low, connect to COM when IN = high. |
| 2, 6, 10, 14 | COM | Common analog signal path; bidirectional, supports rail-to-rail voltage swing. |
| 3, 7, 11, 15 | IN | Digital control inputs; TTL/CMOS-compatible, referenced to V+. |
| 4 | V+ | Positive supply rail; supports +3V to +15V (single) or ±3V to ±8V (dual). |
| 12 | V– | Negative supply rail; required for dual-supply operation (0V to –15V). |
| 8, 16 | GND | Analog ground reference; separate pins minimize ground bounce in multi-channel switching. |
Key Features
| Feature | Design Value |
|---|---|
| RON flatness | ±5Ω over ±4.5V signal range - maintains consistent gain and linearity in programmable-gain amplifier paths. |
| Guaranteed RON matching | ≤3Ω between channels - enables precise differential signal routing without calibration. |
| Break-before-make timing | Guaranteed - prevents momentary shorting during channel switching in multiplexer applications. |
| ESD protection | ±2kV HBM - ensures robustness during board handling and system integration. |
| Specified over temperature | –40°C to +85°C - validated for industrial-grade reliability without derating. |
Applications
| Instrumentation Multiplexer | Data Acquisition Front-End |
|---|---|
Use Scenario: Routing multiple sensor outputs (thermocouples, strain gauges) to a shared ADC in a portable multimeter. IC Role / Device Role / Timing Role: Precision analog switch matrix enabling sequential sampling with minimal offset drift and crosstalk. Use Value: Sub-pC charge injection and <10nA leakage preserve µV-level resolution across all channels without per-channel calibration. | Use Scenario: Isolating and conditioning signals from high-impedance pH or ion-selective electrodes before digitization. IC Role / Device Role / Timing Role: Low-leakage signal gate preventing loading of electrode output impedance (>1GΩ). Use Value: ±1nA on-leakage and ±10nA off-leakage ensure stable DC bias and accurate low-frequency measurement fidelity. |
| Automatic Test Equipment (ATE) | Programmable Gain Amplifier |
Use Scenario: Reconfiguring signal paths between DUT interfaces, calibration references, and measurement instruments in benchtop ATE. IC Role / Device Role / Timing Role: High-isolation, fast-settling switch enabling repeatable, low-crosstalk test sequencing. Use Value: 70dB channel isolation at 1MHz and 30MHz bandwidth support high-speed digital pattern generation and analog stimulus routing. | Use Scenario: Selecting feedback resistors in a digitally controlled transimpedance amplifier for photodiode current measurement. IC Role / Device Role / Timing Role: Low-RON, matched switch enabling precise gain step selection without introducing gain error. Use Value: 120Ω max RON and ≤3Ω inter-channel matching ensure gain accuracy remains within ±0.1% across all settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1412BRUZ | Higher RON (1.8Ω typ), lower leakage (±1pA), requires external VLOGIC reference. | Better suited for femtoampere-level current measurement; less tolerant of supply noise due to sensitive logic interface. | Select ADG1412BRUZ only when sub-pA leakage is mandatory and supply rail noise is tightly controlled. |
| TS5A23159DCUR | Lower RON (0.9Ω typ), single 1.65–5.5V supply only, no dual-supply support. | Optimized for low-voltage portable systems; cannot replace MAX391EUE+T in ±5V or rail-swing >VCC applications. | Choose TS5A23159DCUR for cost-sensitive, battery-powered designs where dual-supply operation is unnecessary. |
Compared with ADG1412BRUZ and TS5A23159DCUR, the MAX391EUE+T uniquely balances ultra-low charge injection (<1pC), dual/single-supply flexibility, and industrial temperature range-making it optimal for precision instrumentation requiring signal integrity across wide voltage and thermal conditions.
Availability
MAX391EUE+T is available at Aetrix Electronics and suitable for instrumentation multiplexing, data acquisition front-ends, and automatic test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX391EUE+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 (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MAX391EUE+T belongs to Maxim's precision analog switch product line, engineered specifically for applications demanding low distortion, minimal charge injection, and guaranteed parametric performance across extended temperature and supply ranges.
FAQ
What is the maximum supply voltage rating for MAX391EUE+T?
The MAX391EUE+T supports a maximum total supply voltage (V+ to V–) of 16V. In dual-supply mode, this allows operation up to ±8V; in single-supply mode, V+ may be as high as +15V with V– = 0V. Exceeding these limits risks permanent damage. Always refer to Absolute Maximum Ratings in the official MAX391 datasheet Rev 3.1 for derating curves and thermal considerations specific to the MAX391EUE+T.
Does MAX391EUE+T support rail-to-rail analog signal switching?
Yes, the MAX391EUE+T supports true rail-to-rail analog signal switching. When powered with ±5V supplies, it handles input signals from –4.5V to +4.5V; with +5V single supply, it passes signals from 0V to +4.5V. This capability is guaranteed by design and verified across temperature, making the MAX391EUE+T suitable for applications like audio routing and sensor signal conditioning where full dynamic range utilization is critical.
How does charge injection of MAX391EUE+T impact ADC sampling accuracy?
The MAX391EUE+T's typical charge injection of <1pC introduces a voltage step on the ADC sample capacitor (e.g., 10pF) of <0.1mV, enabling sub-LSB settling in 16-bit systems. This low value minimizes acquisition time and reduces need for post-switching delay, directly improving throughput in multi-channel data loggers using the MAX391EUE+T as the front-end multiplexer.
Can MAX391EUE+T be used with 3.3V logic control signals?
Yes, MAX391EUE+T control inputs (IN pins) are TTL/CMOS-compatible and referenced to V+, so they accept 3.3V logic high when V+ = +3.3V or higher. For reliable operation with 3.3V microcontrollers, tie V+ to +3.3V and use single-supply configuration (V– = 0V); the MAX391EUE+T will then route analog signals from 0V to ~2.8V. Do not apply 3.3V logic to IN while V+ = +5V unless level-shifted, as that violates input voltage range specs.
Is thermal shutdown or overcurrent protection built into MAX391EUE+T?
No, the MAX391EUE+T does not include thermal shutdown or overcurrent protection circuitry. It is a passive analog switch IC relying on external design safeguards. Users must ensure continuous power dissipation remains below 470mW (at +70°C ambient, θJA = 110°C/W) and avoid sustained overvoltage or overcurrent conditions. System-level protection (e.g., series resistors, clamping diodes) is recommended when routing signals beyond absolute maximum ratings, especially in fault-prone environments where the MAX391EUE+T is deployed.
MAX391EUE+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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX391EUE+T FAQ
1.How can I place an order for MAX391EUE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX391EUE+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 MAX391EUE+T reliable?
The price and inventory of MAX391EUE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX391EUE+T is usually 5 days.
3.What payment methods are accepted for MAX391EUE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX391EUE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX391EUE+T?
MAX391EUE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX391EUE+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 MAX391EUE+T?
For technical support, including MAX391EUE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX391EUE+T requirements.
6.How does Aetrix verify that MAX391EUE+T is sourced from the original manufacturer or authorized distributors?
All MAX391EUE+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 MAX391EUE+T meets industry standards.
7.What is the process for return or replacement of MAX391EUE+T?
All MAX391EUE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX391EUE+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 MAX391EUE+T part is unused and in its original packaging.
Return procedure for MAX391EUE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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