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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:147
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Product details
Overview
MAX391ESE-T from Maxim Integrated is a precision quad SPST analog switch with four normally closed (NC) channels, designed for low-leakage signal routing in ±5V, +5V, or +3V systems. It delivers 30Ω max on-resistance, <2Ω channel-to-channel RON match, 5pC max charge injection, and operates from -40°C to +85°C in a 16-pin narrow SO package - ideal for battery-powered sample-and-hold circuits and ±5V DAC/ADC interfaces.
For engineers reviewing the MAX391ESE-T datasheet, MAX391ESE-T pinout, MAX391ESE-T application, or MAX391ESE-T equivalent, this page provides verified specifications, real-world timing behavior, leakage performance across temperature, supply flexibility (±3V to ±8V or +3V to +15V), and validated alternatives for precision analog switching in guidance systems, test equipment, and audio/video routing.
Technical Context
The MAX391ESE-T implements CMOS transmission-gate architecture with substrate tied to V+, enabling rail-to-rail analog signal handling from V− to V+. Its logic inputs are TTL/CMOS-compatible, and internal protection diodes clamp signals exceeding supply rails - requiring external blocking diodes only if overvoltage sequencing cannot be guaranteed.
All four switches share a common negative supply (V−), positive supply (V+), and ground reference, with independent IN/COM/NC terminals per channel. The device guarantees monotonic RON flatness (≤4Ω over full signal range at ±5V) and break-before-make timing only in the MAX393 variant - not applicable to MAX391ESE-T.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 30Ω max at ±5V supplies - ensures minimal signal attenuation and gain error in precision sensor or DAC output paths. |
| RON Match | <2Ω max between channels - critical for matched gain/attenuation in multi-channel instrumentation front-ends. |
| Charge Injection | 5pC max - limits voltage glitch on sampled nodes, enabling accurate 12-bit+ acquisition in S/H circuits. |
| Off-Leakage Current | 100pA max at +85°C - preserves high-impedance node integrity in battery-operated medical or portable test gear. |
| Supply Range | +3V to +15V single or ±3V to ±8V dual - supports legacy ±5V systems and modern low-voltage portable designs without level-shifting. |
| Switching Speed | tON ≤130ns, tOFF ≤75ns - suitable for multiplexing up to ~5MHz analog signals with minimal settling delay. |
| ESD Rating | >2000V per Method 3015.7 - reduces handling sensitivity and improves board-level robustness in manufacturing. |
Pinout & Package
MAX391ESE-T is housed in a 16-pin narrow SOIC (S16-2) package, 3.9mm wide, with gull-wing leads and standard JEDEC MS-012 footprint. Pin 1 is top-left corner (dot-marked), and the exposed pad (EP) is internally connected to V+ and must be soldered to a V+ thermal pad for optimal thermal performance and ESD robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1, 2, 3, 4) | Logic control inputs | TTL/CMOS-compatible; low = switch closed (NC path active); high = open - direct interface with microcontrollers or FPGAs. |
| COM1–COM4 (Pins 5, 6, 7, 8) | Analog common terminals | Signal return path for each NC switch; must be routed with controlled impedance when handling >1MHz signals. |
| NC1–NC4 (Pins 9, 10, 11, 12) | Normally closed analog outputs | Connected to COM when IN = low; floating when IN = high - used for default-closed signal paths like safety interlocks. |
| V− (Pin 4) | Negative supply rail | Reference for negative analog swing; must be decoupled locally with 0.1µF ceramic capacitor. |
| GND (Pin 5) | Digital/analog ground | Shared reference for logic inputs and substrate; separate analog/digital grounding recommended for high-resolution systems. |
| V+ (Pin 13) | Positive supply rail | Bias for internal circuitry and substrate; connects to exposed pad - requires low-inductance connection to power plane. |
| N.C. (Pin 12) | No connection | Not bonded internally; leave unconnected or tie to GND/V+ only if required for mechanical stability - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON flatness | ≤4Ω over full ±3V analog range at ±5V supplies - maintains consistent gain across input signal amplitude in transducer conditioning. |
| Low temperature drift leakage | <2.5nA at +85°C - enables stable biasing of high-Z sensors (e.g., piezoelectric, pH electrodes) without calibration drift. |
| Single-supply compatibility | Operates down to +3V - eliminates need for dual supplies in portable audio mixers or handheld data loggers. |
| Substrate-connected V+ | Prevents latch-up during overvoltage transients - allows safe operation even with analog signals briefly exceeding V+/V− rails. |
| Ultra-low power consumption | <1µW quiescent - extends battery life in always-on monitoring nodes (e.g., remote environmental sensors). |
Applications
| Sample-and-Hold Circuits | Battery-Operated Systems |
|---|---|
Use Scenario: Multiplexing multiple sensor outputs into a single ADC channel with minimal hold-mode droop. IC Role / Device Role / Timing Role: Normally closed analog switch isolating the hold capacitor during sampling; opens only during acquisition windows. Use Value: 100pA max off-leakage at +85°C prevents >1LSB error in 16-bit 10µF hold capacitors over 100ms intervals. |
Use Scenario: Power gating unused analog subsystems (e.g., GPS RF front-end, auxiliary ADC) in handheld test meters. IC Role / Device Role / Timing Role: Low-RON NC switch enabling/disabling signal paths under MCU control to reduce system standby current. Use Value: 1µW quiescent power and 30Ω RON allow >10-year battery life in coin-cell-powered IoT edge nodes. |
| ±5V DAC/ADC Interfaces | Heads-Up Displays (HUD) |
Use Scenario: Routing calibrated reference voltages or sensor excitation currents in industrial PLC analog I/O modules. IC Role / Device Role / Timing Role: Precision NC switch selecting between multiple DAC outputs driving isolated current loops (4–20mA). Use Value: <2Ω RON match ensures ≤0.01% gain error across 4-channel current source calibration. |
Use Scenario: Switching between primary and backup video sources (e.g., HUD projector and diagnostic camera) in automotive cockpit displays. IC Role / Device Role / Timing Role: High-isolation NC switch isolating video signal paths to prevent crosstalk-induced ghosting or noise coupling. Use Value: 72dB off-isolation at 1MHz suppresses interference from switching power supplies feeding adjacent display drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1414BRUZ | 4-channel, SPST, NO configuration; 1.5Ω typical RON; requires ≥4.5V supply; no ±3V operation. | Optimized for low-RON in high-speed data acquisition; unsuitable for battery-powered <3.6V systems. | Select ADG1414BRUZ only when RON <2Ω is mandatory and dual-supply operation is unnecessary. |
| TS5A3159DCKR | Single-supply only (+1.65V to +5.5V); 0.75Ω typical RON; 10pC charge injection; −40°C to +85°C. | Better for ultra-low-voltage portable audio; higher charge injection limits use in precision S/H below 14-bit resolution. | Choose TS5A3159DCKR for cost-sensitive, single-supply consumer devices where leakage <1nA is not required. |
Compared with ADG1414BRUZ and TS5A3159DCKR, the MAX391ESE-T uniquely supports true bipolar operation (±3V to ±8V), guarantees sub-2Ω RON matching across temperature, and delivers 5pC charge injection - making it the only option among the three qualified for ±5V DAC buffering in military-grade guidance systems.
Availability
MAX391ESE-T is available at Aetrix Electronics and suitable for battery-operated systems, sample-and-hold circuits, and ±5V DAC/ADC interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
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, designs precision analog and mixed-signal ICs for industrial, medical, and communications applications - emphasizing low-power, high-reliability, and rail-to-rail performance.
The MAX391ESE-T belongs to Maxim's precision analog switch family, engineered specifically for low-leakage, low-distortion signal routing in demanding measurement and control systems where parameter matching and temperature stability are non-negotiable.
FAQ
What is the maximum analog signal range supported by the MAX391ESE-T?
The MAX391ESE-T supports analog signals from V− to V+ across its entire operating supply range. With ±5V supplies, the full range is −5V to +5V; with +5V single supply (V− = GND), the range is 0V to +5V; and with +3.3V supply, it is 0V to +3.3V. This rail-to-rail capability is enabled by substrate connection to V+ and internal clamping diodes - ensuring safe operation even with brief signal excursions beyond rails.
Does the MAX391ESE-T require external pull-up or pull-down resistors on its logic inputs?
No, the MAX391ESE-T does not require external pull-up or pull-down resistors. Its logic inputs are TTL/CMOS-compatible with guaranteed thresholds (VINL ≤0.8V, VINH ≥2.4V at +5V supply) and exhibit ≤±0.005µA input current across temperature. Direct connection to microcontroller GPIOs or FPGA outputs is fully supported without additional biasing components.
Can the MAX391ESE-T be used in a single +3.3V supply configuration?
Yes, the MAX391ESE-T is fully specified for single +3.3V operation. At V+ = +3.3V and V− = GND, it delivers 83Ω to 175Ω on-resistance (typ/max), 160ns to 400ns turn-on time, and maintains 5pC max charge injection. Its guaranteed operation down to +3.0V makes it suitable for modern low-voltage portable instrumentation where power efficiency is critical.
How does the exposed pad (EP) on the MAX391ESE-T package function electrically?
The exposed pad (EP) on the MAX391ESE-T is internally connected to V+ and serves two key functions: (1) it provides a low-inductance, low-thermal-resistance path to the positive supply for improved ESD robustness (>2000V), and (2) it enhances heat dissipation - especially important in high-channel-count PCB layouts. The EP must be soldered to a V+-referenced copper pour; floating or grounding it will compromise performance and reliability.
Is the MAX391ESE-T pin-compatible with other variants in the MAX391/MAX392/MAX393 family?
Yes, the MAX391ESE-T shares identical pinout and package (16-pin narrow SO) with MAX392ESE-T and MAX393ESE-T. However, logic polarity differs: MAX391 is normally closed (NC), MAX392 is normally open (NO), and MAX393 has mixed NO/NC pairs. Swapping them requires firmware or schematic updates to invert control signals - they are footprint-compatible but functionally distinct.
MAX391ESE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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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