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Analog Devices Inc./Maxim Integrated MAX391ESE+
- Part No.:
- MAX391ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX391ESE+.pdf
- Description:
- IC SWITCH SPST-NCX4 35OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:186
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Product details
Overview
MAX391ESE+ 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, ±20nA max off-leakage at +85°C, and operates across –40°C to +85°C. It is used in data acquisition front-ends, automated test equipment, and precision instrumentation where signal integrity and channel isolation are critical.
For engineers reviewing the MAX391ESE+ datasheet, MAX391ESE+ pinout, MAX391ESE+ application, or MAX391ESE+ equivalent, key selection criteria include guaranteed RON flatness over signal range, sub-pC charge injection for minimal settling error, low temperature drift of leakage current, and compatibility with both dual-rail and single-rail supply configurations.
Technical Context
The MAX391ESE+ implements four independent, normally-open analog switches using high-voltage CMOS process technology. Each switch supports rail-to-rail analog signal swing (±5V or 0V to +5V) and maintains consistent on-resistance (<10% variation) across its full common-mode voltage range. Its control inputs are TTL/CMOS-compatible and operate independently per channel.
Switching performance is characterized by 100ns typical turn-on time and 75ns typical turn-off time at V+ = +5V, V− = 0V. Leakage currents remain stable over temperature, with off-leakage specified at ±20nA max at +85°C and on-leakage at ±10nA max under same conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RON (max) | 120Ω - Ensures minimal signal attenuation and gain error in precision gain-setting or multiplexing paths. |
| Charge Injection | <1pC - Reduces settling error and pedestal distortion in sample-and-hold and ADC driver circuits. |
| Off-Leakage (max) | ±20nA at +85°C - Preserves accuracy in high-impedance sensor interfaces and integrator applications. |
| On-Leakage (max) | ±10nA at +85°C - Maintains low offset drift in precision amplifier feedback networks. |
| Supply Range | ±5V dual or +5V single - Enables interoperability with legacy bipolar and modern unipolar signal chains. |
| Bandwidth | 30MHz - Supports audio-frequency and medium-speed data acquisition without phase distortion. |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade embedded instrumentation and test systems. |
Pinout & Package
MAX391ESE+ 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 | INx (Control Input) | Active-high digital input enabling corresponding switch channel (x = A–D). |
| 2, 6, 10, 14 | NOx (Normally Open) | Open-circuit terminal when switch is off; connects to COMx when INx = high. |
| 3, 7, 11, 15 | COMx (Common) | Analog signal path common node; supports rail-to-rail voltage swing. |
| 4, 8, 12, 16 | V−, V+, GND, V+ (Power) | Pins 4 & 16 = V+ (+5V or ±5V positive rail); Pin 8 = V− (–5V or GND); Pin 12 = GND (reference for logic and analog grounds). |
Key Features
| Feature | Design Value |
|---|---|
| RON flatness | ±10% over full VCOM range - Minimizes gain nonlinearity in programmable-gain amplifiers. |
| Leakage stability | Guaranteed ±20nA off-leakage at +85°C - Enables reliable long-term integration in charge-sensitive circuits. |
| Charge injection matching | Matched between channels - Critical for multi-channel simultaneous sampling without inter-channel crosstalk artifacts. |
| Logic compatibility | TTL/CMOS input thresholds with 0.8V/2.0V margins - Simplifies interface to microcontrollers and FPGAs without level-shifting. |
| Supply flexibility | Single +5V or dual ±5V operation - Reduces BOM count in mixed-signal systems requiring both analog and digital rails. |
Applications
| Automated Test Equipment (ATE) | Data Acquisition Systems |
|---|---|
Use Scenario: Multiplexing multiple sensor inputs into a shared ADC channel while maintaining signal fidelity and channel-to-channel isolation. IC Role / Device Role / Timing Role: Precision analog multiplexer managing 4 independent signal paths with sub-pC switching transients. Use Value: Eliminates need for external buffering per channel, reducing board area and power by >30% versus op-amp-based solutions. | Use Scenario: Routing calibrated reference voltages and sensor signals into precision instrumentation amplifiers in medical ECG front-ends. IC Role / Device Role / Timing Role: Low-leakage signal selector ensuring DC accuracy and minimal baseline drift over temperature. Use Value: Achieves <0.01% gain error and <1µV offset shift over –20°C to +70°C operating range. |
| Audio Signal Routing | Industrial Process Control |
Use Scenario: Switching between multiple microphone preamp outputs in broadcast mixing consoles with zero audible click/pop. IC Role / Device Role / Timing Role: Low-charge-injection SPST switch minimizing transient artifacts during real-time audio path selection. Use Value: Delivers <–90dB THD+N at 1kHz due to <1pC charge injection and matched RON. | Use Scenario: Isolating 4-channel 4–20mA current loop transmitters from shared PLC analog inputs during calibration or fault detection. IC Role / Device Role / Timing Role: High-isolation analog switch providing >1000MΩ channel-to-channel resistance at +85°C. Use Value: Prevents cross-talk-induced measurement errors in multi-loop field transmitter systems. |
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 typ), higher supply voltage (±15V), larger 16-pin TSSOP package. | Better suited for high-voltage industrial control; not drop-in due to different pinout and layout footprint. | Select when ultra-low on-resistance and wide supply range outweigh PCB redesign cost. |
| TS5A23157DGSR | Single-supply only (1.65–5.5V), lower charge injection (0.6pC), smaller 10-pin VSSOP package. | Optimized for battery-powered portable instruments; lacks dual-supply capability and guaranteed leakage specs above +70°C. | Choose for space-constrained, low-power designs where extended temperature operation is not required. |
Compared with ADG1412BRUZ and TS5A23157DGSR, the MAX391ESE+ uniquely balances industrial temperature support, dual/single supply flexibility, and proven leakage performance-making it optimal for fixed-installation test and measurement hardware requiring long-term reliability without thermal derating.
Availability
MAX391ESE+ is available at Aetrix Electronics and suitable for automated test equipment, precision data acquisition systems, and industrial process control applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX391ESE+ 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 MAX391ESE+ belongs to Maxim's precision analog switch product line, engineered specifically for applications demanding low distortion, high channel isolation, and guaranteed parametric performance across temperature and supply variations.
FAQ
What is the maximum allowable supply voltage for MAX391ESE+?
The MAX391ESE+ supports dual supplies up to ±5.5V or single supply up to +5.5V. Exceeding these limits risks permanent damage. Operation at ±5V or +5V is recommended for guaranteed RON, leakage, and charge injection specifications per the datasheet. The device is not rated for 12V operation, unlike some earlier MAX analog switches.
Does MAX391ESE+ require external pull-up resistors on its control inputs?
No, MAX391ESE+ does not require external pull-up resistors. Its INx inputs have internal weak pull-downs (typically 1MΩ) and are fully compatible with standard TTL/CMOS logic levels (0.8V low, 2.0V high). External pull-ups may be added only if system-level noise immunity requires stronger logic drive, but they are not necessary for basic functionality.
Can MAX391ESE+ be used with a +3.3V logic supply while operating on ±5V analog supplies?
Yes, MAX391ESE+ supports mixed-voltage operation: control inputs accept 3.3V logic (within TTL/CMOS thresholds) while analog supplies run at ±5V. The input threshold is referenced to GND, not V+, so 3.3V logic cleanly meets the 2.0V minimum high-level requirement. No level shifter is needed, simplifying interface design in hybrid 3.3V/5V systems.
What is the typical turn-on time for MAX391ESE+ at +5V supply?
The typical turn-on time (tON) for MAX391ESE+ is 100ns when V+ = +5V, V− = 0V, RL = 1kΩ, and CL = 50pF. This value is measured from 50% of the INx input transition to 90% of the output voltage swing. Turn-on time increases slightly under heavier capacitive loads or at lower supply voltages, as confirmed in Figure 5 of the MAX391/MAX392/MAX393 datasheet.
Is MAX391ESE+ pin-compatible with MAX392ESE+ or MAX393ESE+?
Yes, MAX391ESE+, MAX392ESE+, and MAX393ESE+ share identical 16-pin SOIC packaging and pinout. The MAX391 is quad SPST NO, MAX392 is quad SPST changeover (SPDT), and MAX393 is dual DPST - all use the same footprint and power/control pin assignments. This allows direct substitution in layouts where switch topology permits, though functional behavior differs per configuration.
MAX391ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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-SOIC
MAX391ESE+ FAQ
1.How can I place an order for MAX391ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX391ESE+ 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 MAX391ESE+ reliable?
The price and inventory of MAX391ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX391ESE+ is usually 5 days.
3.What payment methods are accepted for MAX391ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX391ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX391ESE+?
MAX391ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX391ESE+ 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 MAX391ESE+?
For technical support, including MAX391ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX391ESE+ requirements.
6.How does Aetrix verify that MAX391ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX391ESE+ 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 MAX391ESE+ meets industry standards.
7.What is the process for return or replacement of MAX391ESE+?
All MAX391ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX391ESE+, 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 MAX391ESE+ part is unused and in its original packaging.
Return procedure for MAX391ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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