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Analog Devices Inc./Maxim Integrated MAX391ESE+TG05
- Part No.:
- MAX391ESE+TG05
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX391ESE+TG05.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
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Inventory:4,003
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Product details
Overview
MAX391ESE+TG05 from Maxim Integrated is a precision quad SPST analog switch with four normally closed (NC) channels, designed for ±5V or single +3V/+5V operation. It delivers 30Ω max on-resistance, <2Ω channel-to-channel RON match, 4Ω max RON flatness, 5pC max charge injection, and 100pA max leakage - enabling high-accuracy signal routing in battery-powered test equipment and precision data acquisition systems.
For engineers reviewing the MAX391ESE+TG05 datasheet, MAX391ESE+TG05 pinout, MAX391ESE+TG05 application, or MAX391ESE+TG05 equivalent, key selection criteria include guaranteed RON matching over temperature, low charge injection for sample-and-hold integrity, dual-supply compatibility down to ±3V, ESD robustness >2000V, and SO-16 packaging suitable for space-constrained industrial PCBs.
Technical Context
The MAX391ESE+TG05 implements CMOS transmission-gate architecture with substrate tied to V+, enabling rail-to-rail analog signal switching from V− to V+. Its logic inputs are TTL/CMOS-compatible, and internal protection diodes clamp signals exceeding supply rails - requiring external series diodes only if absolute maximum ratings risk violation during power sequencing.
It operates across dual supplies (±3V to ±8V) or single supplies (+3V to +15V), with leakage performance specified at −40°C to +85°C. All four NC switches share matched RON tracking and flatness, making it suitable for multiplexed sensor front-ends where channel consistency directly impacts measurement accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 30Ω max at ±5V - ensures minimal signal attenuation and gain error in precision analog paths |
| RON match (ΔRON) | <2Ω max - enables accurate ratiometric measurements across switched channels |
| RON flatness | 4Ω max over full signal range - maintains consistent gain and linearity across input voltage swing |
| Charge injection | 5pC max - limits voltage glitch in sample-and-hold and ADC input circuits |
| Leakage current | 100pA max at +85°C - preserves DC accuracy in high-impedance sensor interfaces |
| Switching speed | tON ≤130ns, tOFF ≤75ns - supports moderate-speed multiplexing up to ~5MHz |
| ESD rating | >2000V per Method 3015.7 - reduces handling sensitivity and board-level ESD hardening needs |
Pinout & Package
MAX391ESE+TG05 is housed in a 16-pin narrow SOIC (S16-2) package, 3.9mm wide, with standard 1.27mm pitch and exposed pad (EP) connected to V+ for thermal and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Logic control inputs - active-high enables NC path; inverted logic relative to MAX392 |
| 2, 7, 10, 15 | COM1–COM4 | Analog common terminals - connect to signal source or load; bidirectional conduction when closed |
| 3, 6, 11, 14 | NC1–NC4 | Normally closed analog terminals - shorted to respective COM when IN = low |
| 4 | V− | Negative supply rail - must be ≥ −8V; clamps off-state signals below V− via internal diode |
| 5 | GND | Ground reference - used only in single-supply mode; not connected in dual-supply operation |
| 12 | N.C. | No internal connection - must be left floating or tied to GND/V− per layout best practice |
| 13 | V+ | Positive supply rail - must be ≤ +17V; substrate tie point; EP must connect to V+ |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON match | <2Ω max between all four channels - eliminates calibration drift in multi-channel instrumentation |
| Low charge injection | 5pC max - prevents hold capacitor voltage step errors in precision sampling circuits |
| Wide supply flexibility | +3V to +15V single or ±3V to ±8V dual - supports legacy ±5V systems and modern low-voltage battery designs |
| Enhanced leakage spec | <2.5nA at +85°C - maintains signal integrity in high-Z medical and sensor front-ends |
| TTL/CMOS logic interface | VINH = 2.4V, VINL = 0.8V - interoperable with standard microcontrollers and FPGAs without level shifters |
Applications
| Test Equipment Multiplexer | Precision Data Acquisition |
|---|---|
|
Use Scenario: Routing multiple sensor outputs to a shared ADC in automated test systems. IC Role / Device Role / Timing Role: Quad NC switch selects one of four analog inputs while maintaining signal fidelity and channel consistency. Use Value: Guaranteed RON match <2Ω and 4Ω flatness ensure uniform gain across channels, reducing post-processing correction. |
Use Scenario: Isolating thermocouple or strain gauge bridges from measurement circuitry during standby. IC Role / Device Role / Timing Role: Normally closed configuration provides fail-safe continuity; opens only during calibration or isolation. Use Value: 100pA max leakage at +85°C preserves microvolt-level bridge balance, critical for sub-0.1% accuracy systems. |
| Audio Signal Routing | Battery-Powered Instrumentation |
|
Use Scenario: Switching between microphone preamp outputs in portable audio analyzers. IC Role / Device Role / Timing Role: Low 5pC charge injection prevents audible pop/click artifacts during real-time channel switching. Use Value: Fast tON/tOFF (≤130ns/≤75ns) enables seamless transitions without signal dropout or transient distortion. |
Use Scenario: Power-gating analog signal paths in handheld multimeters and environmental sensors. IC Role / Device Role / Timing Role: Ultra-low 1µW quiescent power minimizes standby drain on coin-cell or Li-ion batteries. Use Value: Dual ±3V operation allows direct integration with op-amp rails, eliminating extra LDOs and saving board space. |
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 |
|---|---|---|---|
| MAX391ESE | Same die, identical specs, same SO-16 package - differs only in tape-and-reel packaging (TG05 denotes 2.5k reel) | No functional difference; TG05 variant optimized for automated SMT assembly | Select MAX391ESE+TG05 for high-volume production requiring standard 2.5k tape; use MAX391ESE for cut-tape or sample evaluation |
| ADG1412BRUZ | Quad SPST, but normally open (NO); 1.8Ω typical RON, 0.25Ω match, but higher 12pC charge injection and no −40°C to +85°C guarantee at ±5V | Better RON match but unsuitable for fail-closed safety-critical paths; requires tighter layout for charge injection control | Choose ADG1412BRUZ only if NO logic and ultra-low RON variation outweigh need for NC default and proven −40°C performance |
Compared with MAX391ESE+TG05, the MAX391ESE offers identical electrical behavior with different packaging logistics, while ADG1412BRUZ trades NC safety and temperature margin for lower RON variation - making MAX391ESE+TG05 optimal for ruggedized, fail-safe, wide-temperature analog routing.
Availability
MAX391ESE+TG05 is available at Aetrix Electronics and suitable for test equipment multiplexing, precision data acquisition, audio signal routing, battery-powered instrumentation, and industrial sensor interfacing requiring stable component supply across extended temperature ranges.
Supply support for MAX391ESE+TG05 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, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX391ESE+TG05 belongs to Maxim's precision analog switch family, engineered specifically for high-fidelity signal routing in environments demanding low leakage, matched on-resistance, and robust operation across dual and single supplies.
FAQ
What is the operating temperature range for MAX391ESE+TG05?
The MAX391ESE+TG05 is rated for −40°C to +85°C operation, verified across all key parameters including on-resistance match, leakage, and switching speed. This extended industrial temperature grade ensures reliability in harsh environments such as factory automation controllers and outdoor test gear where ambient extremes are common. The MAX391ESE+TG05 maintains its 2Ω RON match and 100pA leakage specs across this full range.
Does MAX391ESE+TG05 support single-supply operation?
Yes, MAX391ESE+TG05 supports single-supply operation from +3V to +15V. At +5V, it guarantees 60Ω max RON, 2Ω max match, and 6Ω flatness; at +3.3V, RON rises to 175Ω max but retains 5pC charge injection and 100pA leakage. GND pin (Pin 5) must be connected in single-supply mode, unlike dual-supply configurations where it remains unused.
How does the NC configuration of MAX391ESE+TG05 affect system safety?
The MAX391ESE+TG05's normally closed (NC) topology ensures signal continuity by default - the switch closes (connects COM to NC) when logic input is low. This provides fail-safe behavior: loss of control voltage or MCU reset leaves all four channels conducting, preventing open-circuit faults in critical monitoring paths. In contrast, NO devices like MAX392 would disconnect under the same failure, making MAX391ESE+TG05 preferred for safety-critical analog monitoring.
Can MAX391ESE+TG05 be used with ±3V supplies?
Yes, MAX391ESE+TG05 is fully specified for bipolar operation from ±3V to ±8V. At ±3V, it maintains 100pA max leakage and 5pC charge injection, though RON increases to ~65Ω typical. The device's rail-to-rail analog range (V− to V+) and guaranteed matching hold across this range, enabling compatibility with low-voltage op-amps and portable systems where ±3V rails are standard.
What is the purpose of the exposed pad (EP) on MAX391ESE+TG05?
The exposed pad on MAX391ESE+TG05 must be soldered to V+ for both thermal dissipation and electrical stability. It connects internally to the silicon substrate, which is tied to V+, and improves power handling and noise immunity. Leaving the EP unconnected or grounding it violates the absolute maximum ratings and risks latch-up or parametric shift. Proper EP connection ensures reliable operation at full temperature and supply specifications for MAX391ESE+TG05.
MAX391ESE+TG05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX391ESE+TG05 FAQ
1.How can I place an order for MAX391ESE+TG05 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX391ESE+TG05 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+TG05 reliable?
The price and inventory of MAX391ESE+TG05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX391ESE+TG05 is usually 5 days.
3.What payment methods are accepted for MAX391ESE+TG05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX391ESE+TG05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX391ESE+TG05?
MAX391ESE+TG05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX391ESE+TG05 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+TG05?
For technical support, including MAX391ESE+TG05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX391ESE+TG05 requirements.
6.How does Aetrix verify that MAX391ESE+TG05 is sourced from the original manufacturer or authorized distributors?
All MAX391ESE+TG05 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+TG05 meets industry standards.
7.What is the process for return or replacement of MAX391ESE+TG05?
All MAX391ESE+TG05 units undergo pre-shipment inspection (PSI). If there is an issue with MAX391ESE+TG05, 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+TG05 part is unused and in its original packaging.
Return procedure for MAX391ESE+TG05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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