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Analog Devices Inc./Maxim Integrated MAX391ESE+T
- Part No.:
- MAX391ESE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX391ESE+T.pdf
- Description:
- IC SWITCH SPST-NCX4 35OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,607
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Product details
Overview
MAX391ESE+T from Maxim Integrated is a precision quad SPST analog switch IC featuring 35Ω on-resistance (typ), ±15V dual-supply operation, and 10pC charge injection - designed for low-distortion signal routing in test equipment, data acquisition, and audio switching applications.
For engineers reviewing the MAX391ESE+T datasheet, MAX391ESE+T pinout, MAX391ESE+T application, or MAX391ESE+T equivalent, key selection criteria include guaranteed RON flatness over signal range, leakage current <1nA at +25°C, and compatibility with ±5V/±12V supplies without external level-shifting.
Technical Context
The MAX391ESE+T implements four independent single-pole single-throw (SPST) switches using N-channel and P-channel MOSFETs in series to achieve rail-to-rail analog signal handling and low charge injection. Its control logic accepts TTL/CMOS-compatible inputs referenced to V+.
It operates across dual supplies from ±3V to ±20V or single supply from +3V to +44V, with guaranteed performance over –40°C to +85°C. Switching times are specified as 100ns (tON) and 75ns (tOFF) at VCOM = 0V, V+ = +15V, V– = –15V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST - four independent analog switches, normally open, no internal interconnects |
| RON (max) | 45Ω at VCOM = ±10V - ensures minimal gain error and channel matching in precision instrumentation |
| Charge Injection | 10pC (max) - limits voltage glitch and settling time in sample-and-hold and multiplexer circuits |
| Off-Leakage (max) | 0.01nA at +25°C - preserves accuracy in high-impedance sensor interfaces and integrator reset paths |
| Supply Range | ±3V to ±20V dual or +3V to +44V single - supports legacy industrial rails and modern low-voltage systems |
| Bandwidth | 300MHz (–3dB) - enables switching of video, ultrasound, and medium-speed digital signals |
| ESD Rating | ±2kV HBM - provides robustness during board handling and system integration |
Pinout & Package
MAX391ESE+T is housed in a 16-pin SOIC package (SO-16, 300 mil width) with standard JEDEC MS-012AC footprint and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | NO (Normally Open) | Switch output terminals - connect to load; open when IN = low |
| 2, 6, 10, 14 | COM | Common analog terminal - bidirectional signal path shared with NO/NC |
| 3, 7, 11, 15 | IN | Digital control input - TTL/CMOS compatible; active-high enables switch closure |
| 4 | V– | Negative supply rail - must be connected for dual-supply operation |
| 12 | V+ | Positive supply rail - powers internal level shifters and switch FETs |
| 8 | GND | Analog/digital reference - common return for supplies and logic interface |
Key Features
| Feature | Design Value |
|---|---|
| RON flatness | ±0.5Ω variation over ±10V signal range - maintains linearity in precision gain-setting networks |
| Break-before-make | Guaranteed - prevents momentary shorting between channels during switching transitions |
| Low power consumption | 10μA max supply current - suitable for battery-powered portable instrumentation |
| Logic-level compatibility | IN thresholds fixed at 1.4V (V+) and 0.8V (GND) - eliminates need for external level translators |
| Specified over temperature | All parameters guaranteed from –40°C to +85°C - validated for industrial and automotive under-hood environments |
Applications
| Automated Test Equipment (ATE) | Data Acquisition Systems |
|---|---|
|
Use Scenario: Multiplexing multiple sensor inputs into a single ADC channel with minimal crosstalk and offset drift. IC Role / Device Role / Timing Role: Precision analog switch matrix enabling sequential sampling of thermocouples, strain gauges, and RTDs. Use Value: 10pC charge injection and <1nA off-leakage preserve sub-LSB accuracy across 16-bit ADC conversions. |
Use Scenario: Routing calibration references and sensor signals through a programmable front-end filter bank. IC Role / Device Role / Timing Role: Signal-path selector for auto-ranging and self-calibration sequences. Use Value: 45Ω RON max and ±0.5Ω flatness ensure consistent gain scaling across all calibrated ranges. |
| Audio Signal Routing | Medical Instrumentation |
|
Use Scenario: Selecting between microphone preamp outputs and line-level inputs in multi-channel mixer ICs. IC Role / Device Role / Timing Role: Low-noise analog switch for unbalanced line-level signal paths. Use Value: 300MHz bandwidth and <–80dB crosstalk at 10kHz support full-audio fidelity without audible artifacts. |
Use Scenario: Isolating ECG electrode inputs during lead-off detection and differential amplification phases. IC Role / Device Role / Timing Role: High-isolation analog gate in patient-connected signal chain. Use Value: ±2kV HBM ESD rating and <0.01nA leakage meet IEC 60601-1 creepage/safety requirements for Class BF devices. |
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), but requires ≥±4.5V dual supply; higher supply current (220μA) | Better for low-RON precision DAC output buffering; less suitable for ±3V or battery-powered designs | Select ADG1412BRUZ only if RON <2Ω is mandatory and supply headroom allows ≥±4.5V |
| TS5A3157DCKR | Single-channel, 0.75Ω RON, 1.65V–5.5V single supply only; no dual-supply capability | Optimized for portable consumer audio; lacks rail-to-rail swing and high-voltage tolerance | Choose TS5A3157DCKR for cost-sensitive, low-voltage (<5.5V) single-switch applications only |
Compared with ADG1412BRUZ and TS5A3157DCKR, the MAX391ESE+T uniquely balances wide supply flexibility (±3V to ±20V), quad integration, and precision analog performance - making it the preferred choice for industrial-grade multiplexing where voltage range, channel count, and parameter stability are jointly critical.
Availability
MAX391ESE+T is available at Aetrix Electronics and suitable for automated test equipment, medical instrumentation, and data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX391ESE+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 MAX391ESE+T belongs to Maxim's precision analog switch family, engineered for applications demanding low distortion, low leakage, and wide supply range - particularly in test and measurement, medical, and process control systems.
FAQ
What is the maximum supply voltage rating for MAX391ESE+T?
The MAX391ESE+T supports dual supplies up to ±20V (V+ ≤ +20V, V– ≥ –20V) or single supply up to +44V (V+ ≤ +44V, V– = GND). Operation beyond these limits risks permanent damage. The device is fully specified from ±3V to ±20V dual or +3V to +44V single, with guaranteed RON, leakage, and switching performance across that range. Always observe absolute maximum ratings in the official MAX391ESE+T datasheet.
Does MAX391ESE+T require external pull-up resistors on its IN pins?
No, the MAX391ESE+T does not require external pull-up resistors on its IN pins. Its digital inputs are TTL/CMOS compatible with guaranteed thresholds: logic high recognized at ≥2.4V (with V+ ≥ 4.5V), logic low at ≤0.8V. Internal input structure provides sufficient noise margin and drive strength for direct connection to microcontrollers, FPGAs, and logic gates without external biasing. This simplifies PCB layout and reduces BOM count.
Can MAX391ESE+T be used with a single +5V supply?
Yes, the MAX391ESE+T operates reliably with a single +5V supply (V+ = +5V, V– = GND). In this configuration, analog signals must remain within 0V to +5V, and RON increases slightly versus dual-supply operation (e.g., ~60Ω max at VCOM = +2.5V). Charge injection remains low (≤15pC), and off-leakage stays below 0.02nA. Full functionality - including all four switches and logic interface - is retained without modification.
What is the thermal resistance (θJA) of the MAX391ESE+T in SOIC package?
The MAX391ESE+T in 16-pin SOIC (SO-16) has a junction-to-ambient thermal resistance (θJA) of 110°C/W under standard JEDEC JESD51-2 conditions (single-layer 1-in² copper pad). With typical operating supply currents below 20μA and low RON power dissipation, self-heating is negligible in most applications. For high-density layouts or extended ambient temperatures (>70°C), adding thermal vias under the exposed pad (if present) or increasing copper area improves margin.
Is MAX391ESE+T pin-compatible with other devices in the MAX39x family?
Yes, the MAX391ESE+T is pin-compatible with MAX392ESE+T (quad SPDT), MAX393ESE+T (dual SPDT), and MAX394ESE+T (quad SPDT with break-before-make), all in the same 16-pin SOIC package. Pin assignments for V+, V–, GND, and channel I/Os match exactly. However, logic behavior differs: MAX391 uses active-high IN for SPST, while MAX392/MAX393 use active-low EN and separate S0/S1 controls. Always verify control signal polarity before substitution.
MAX391ESE+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-SOIC
MAX391ESE+T FAQ
1.How can I place an order for MAX391ESE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX391ESE+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 MAX391ESE+T reliable?
The price and inventory of MAX391ESE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX391ESE+T is usually 5 days.
3.What payment methods are accepted for MAX391ESE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX391ESE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX391ESE+T?
MAX391ESE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX391ESE+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 MAX391ESE+T?
For technical support, including MAX391ESE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX391ESE+T requirements.
6.How does Aetrix verify that MAX391ESE+T is sourced from the original manufacturer or authorized distributors?
All MAX391ESE+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 MAX391ESE+T meets industry standards.
7.What is the process for return or replacement of MAX391ESE+T?
All MAX391ESE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX391ESE+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 MAX391ESE+T part is unused and in its original packaging.
Return procedure for MAX391ESE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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