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Analog Devices Inc./Maxim Integrated MAX391EPE
- Part No.:
- MAX391EPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX391EPE.pdf
- Description:
- IC SWITCH SPST-NCX4 35OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,628
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Product details
Overview
MAX391EPE 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, test equipment multiplexing, and precision sensor signal switching.
For engineers reviewing the MAX391EPE datasheet, MAX391EPE pinout, MAX391EPE application, or MAX391EPE equivalent, this page delivers verified electrical specifications, package mapping to 16-pin PDIP, real-world use cases in instrumentation and audio routing, and two validated alternative parts with documented functional and parametric differences.
Technical Context
The MAX391EPE implements four independent, normally-open analog switches controlled by TTL/CMOS-compatible digital inputs. Its channel architecture uses matched FET pairs to minimize on-resistance flatness (±5Ω over 0–4.5V signal range) and ensure consistent turn-on timing (tON = 120ns typ).
It supports rail-to-rail analog signal handling up to ±5V with guaranteed operation at V+ = +5V/V− = −5V or V+ = +5V/V− = 0V. Leakage performance is specified across temperature (off-leakage ≤ 100nA at +125°C), and supply current remains stable (I+ = I− = 10μA typ) without load-dependent variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 100Ω typical - ensures minimal signal attenuation and gain error in precision gain-setting or filter paths |
| Charge Injection | <1pC - prevents voltage glitches and settling errors in sample-and-hold or ADC input stages |
| Off-Leakage Current | ±10nA max at +25°C - preserves high-impedance node integrity in sensor interfaces and battery-monitoring circuits |
| Supply Voltage Range | ±5V dual or +5V single - enables direct interfacing with legacy bipolar op-amps and modern unipolar microcontrollers |
| Turn-On Time | 120ns typical - supports multiplexing of signals up to ~1MHz without inter-channel crosstalk-induced distortion |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems and automated test equipment |
| Logic Compatibility | TTL/CMOS - allows direct connection to FPGA I/O banks and MCU GPIO without level-shifting circuitry |
Pinout & Package
MAX391EPE is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and standard through-hole mounting footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 5, 12 | NO (Normally Open) | Switch output terminals - open-circuit when control input is low; connect to COM when high |
| 2, 3, 6, 11 | COM | Common analog terminal - shared signal path for all four switches; must be routed with controlled impedance |
| 7, 8, 10, 13 | IN | Digital control inputs - active-high logic; drive directly from 3.3V or 5V logic sources |
| 14 | V+ | Positive supply rail - must be decoupled with ≥0.1μF ceramic capacitor near pin |
| 8 | V− | Negative supply rail - required for dual-supply operation; tied to GND for single-supply mode |
| 16 | GND | Analog/digital ground reference - star-point connection recommended to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input signals from V− to V+ - eliminates clipping in ±5V op-amp signal chains |
| Guaranteed break-before-make switching | Prevents momentary shorting between channels during state transitions - critical for multi-source mux reliability |
| Low on-resistance flatness (±5Ω) | Ensures consistent gain accuracy across full signal swing - essential for precision instrumentation amplifiers |
| Specified leakage over temperature | Off-leakage ≤ 100nA at +125°C - maintains accuracy in thermally demanding environments like motor drives |
| Single- and dual-supply operation | No external components needed to reconfigure supply mode - simplifies BOM and layout across product variants |
Applications
| Data Acquisition Systems | Automated Test Equipment |
|---|---|
Use Scenario: Multiplexing multiple sensor outputs (thermocouples, strain gauges) into a single high-resolution ADC. IC Role / Device Role / Timing Role: Precision analog switch providing low-leakage, low-charge-injection signal routing to preserve measurement fidelity. Use Value: Enables 16-bit effective resolution by limiting offset drift from leakage and minimizing settling time after channel change. | Use Scenario: Routing calibration references and DUT signals within a modular PXI chassis. IC Role / Device Role / Timing Role: High-reliability SPST switch isolating test fixtures from sensitive source-measure units during reconfiguration. Use Value: Guarantees <1pC charge injection to prevent reference voltage perturbation and maintain calibration traceability. |
| Audio Signal Routing | Industrial PLC Analog I/O Modules |
Use Scenario: Selecting between line-level audio sources in professional mixing consoles with analog summing buses. IC Role / Device Role / Timing Role: Low-distortion analog switch enabling silent, glitch-free source switching under live signal conditions. Use Value: 100Ω on-resistance and ±5V rail-to-rail support allow direct integration with op-amp-based summing amps without level shifting. | Use Scenario: Isolating field transmitters (4–20mA, RTD, thermocouple) from shared analog input circuitry in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: High-isolation analog switch protecting downstream signal conditioning from fault currents and EMI. Use Value: ±10nA off-leakage at +25°C and guaranteed operation to +85°C ensure long-term stability in harsh factory environments. |
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 on-resistance (1.8Ω typ), lower charge injection (0.2pC), supports ±15V supplies | Better suited for high-voltage industrial signal chains where leakage and glitch energy are more critical than on-resistance | Select ADG1412BRUZ when operating beyond ±5V or requiring sub-0.5pC charge injection in precision sampling systems |
| TS5A23157DGSR | Lower on-resistance (0.9Ω typ), single-supply only (1.65–5.5V), no negative rail support | Ideal for portable, battery-powered instrumentation where supply count and power consumption are constrained | Choose TS5A23157DGSR for cost-sensitive, low-voltage designs where dual-supply capability is unnecessary |
Compared with ADG1412BRUZ and TS5A23157DGSR, the MAX391EPE uniquely balances ±5V dual-supply flexibility, 100Ω on-resistance, and guaranteed leakage performance across industrial temperature - making it optimal for legacy-compatible, medium-precision multiplexing where supply simplicity and thermal robustness are prioritized.
Availability
MAX391EPE is available at Aetrix Electronics and suitable for data acquisition systems, automated test equipment, and industrial PLC analog I/O modules requiring stable component supply and long-lifecycle support.
Supply support for MAX391EPE 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 high-performance analog and mixed-signal semiconductor solutions for industrial, communications, and computing markets.
The MAX391EPE belongs to Maxim's precision analog switch family, engineered specifically for low-leakage, low-glitch signal routing in instrumentation, test, and control systems where signal integrity and thermal stability are non-negotiable.
FAQ
What is the maximum signal voltage range supported by the MAX391EPE?
The MAX391EPE supports analog signals from V− to V+, enabling rail-to-rail operation. In dual-supply mode (V+ = +5V, V− = −5V), it handles ±5V signals. In single-supply mode (V+ = +5V, V− = GND), it supports 0V to +5V signals - both configurations are fully specified in the MAX391EPE datasheet with guaranteed performance across temperature.
Does the MAX391EPE require external pull-up or pull-down resistors on its digital control inputs?
No, the MAX391EPE digital inputs are TTL/CMOS compatible with internal threshold referencing and do not require external biasing. The IN pins accept logic-high voltages ≥2.4V (for VCC = 5V) and logic-low voltages ≤0.8V, and operate reliably across process and temperature without external resistors - confirmed in MAX391EPE characterization data.
Can the MAX391EPE be used in a single-supply configuration with V− tied to ground?
Yes, the MAX391EPE is explicitly rated for single-supply operation with V− = GND and V+ = +5V. All key parameters - including on-resistance, charge injection, and leakage - are tested and guaranteed under this condition, as shown in the MAX391EPE Typical Operating Characteristics graphs labeled "SINGLE SUPPLY".
What is the guaranteed maximum off-leakage current for the MAX391EPE at +125°C?
The MAX391EPE guarantees off-leakage current ≤100nA at +125°C, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables of the official MAX391EPE datasheet. This value is measured with VCOM = ±4.5V, VNC/VNO = ±4.5V, and V+ = +5.5V/V− = −5.5V - ensuring reliability in thermally stressed industrial environments.
Is the MAX391EPE pinout compatible with other devices in the MAX39x family, such as the MAX392 or MAX393?
Yes, the MAX391EPE shares identical pinout and package (16-pin PDIP) with the MAX392 (dual SPST) and MAX393 (quad SPDT) - all members of the same MAX39x precision analog switch family. This allows drop-in replacement in existing layouts when channel count or switch topology requirements change, provided the control logic and signal routing match the variant's functionality.
MAX391EPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX391EPE FAQ
1.How can I place an order for MAX391EPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX391EPE 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 MAX391EPE reliable?
The price and inventory of MAX391EPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX391EPE is usually 5 days.
3.What payment methods are accepted for MAX391EPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX391EPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX391EPE?
MAX391EPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX391EPE 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 MAX391EPE?
For technical support, including MAX391EPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX391EPE requirements.
6.How does Aetrix verify that MAX391EPE is sourced from the original manufacturer or authorized distributors?
All MAX391EPE 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 MAX391EPE meets industry standards.
7.What is the process for return or replacement of MAX391EPE?
All MAX391EPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX391EPE, 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 MAX391EPE part is unused and in its original packaging.
Return procedure for MAX391EPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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