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Analog Devices Inc./Maxim Integrated MAX312LEUE+
- Part No.:
- MAX312LEUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX312LEUE+.pdf
- Description:
- IC SW SPST-NCX4 10OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,322
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Product details
Overview
MAX312LEUE+ from Maxim Integrated is a quad, single-pole/single-throw (SPST), normally closed (NC) analog switch IC designed for precision signal routing in industrial and test equipment. It delivers 10Ω max on-resistance, 1.5Ω max on-resistance matching between channels, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail analog signal handling up to ±15V. It is commonly used in audio signal routing and sample-and-hold circuits where low distortion and tight channel matching are critical.
For engineers reviewing the MAX312LEUE+ datasheet, MAX312LEUE+ pinout, MAX312LEUE+ application, or MAX312LEUE+ equivalent, this page provides verified technical context, package-specific pin definitions, real-world application mappings, and validated alternative options - all grounded in the official MAX312L/MAX313L/MAX314L datasheet Rev 1 (9/08) and Maxim's ordering documentation.
Technical Context
The MAX312LEUE+ implements four independent NC SPST switches using CMOS process technology with 92 transistors. Its logic inputs accept +3V-compatible thresholds (VIH = 2.0V, VIL = 0.8V), enabling direct interfacing with microcontrollers and FPGAs without level-shifting.
It supports both dual-supply (±4.5V to ±20V) and single-supply (+4.5V to +36V) configurations, with rail-to-rail analog signal handling across the full supply range. The device eliminates power-supply sequencing constraints present in legacy MAX312 variants, allowing flexible startup sequences without latch-up risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 10Ω max at TA = –40°C to +85°C, ensuring minimal signal attenuation and voltage drop in precision analog paths. |
| RON Matching | 1.5Ω max between channels, enabling matched gain/attenuation in differential or multi-channel signal paths. |
| Analog Signal Range | ±15V with ±15V supplies, supporting full rail-to-rail operation for bipolar sensor and audio signals. |
| Logic Compatibility | +3V logic inputs (VIH = 2.0V, VIL = 0.8V), compatible with 3.3V digital controllers without external translators. |
| Off-Leakage Current | ±2.5nA max at +85°C, minimizing DC error in high-impedance sample-and-hold or sensor front-ends. |
| Turn-On/Off Time | 275ns / 235ns max (dual supply), enabling reliable switching in data-acquisition systems up to ~1MHz sampling rates. |
| Crosstalk | >96dB at 20kHz, preserving signal integrity in multi-channel audio routing applications. |
Pinout & Package
MAX312LEUE+ is housed in a 16-pin TSSOP package (package code U16-1, document 21-0066), with exposed pad not connected internally and no thermal requirement specified in datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1, 8, 9, 16) | Logic Control Inputs | Active-low control for NC switches; logic '0' closes path, '1' opens path - matches standard TTL/CMOS drive levels. |
| COM1–COM4 (Pins 2, 7, 10, 15) | Analog Common Terminals | Signal input/output nodes shared between NC and COM; must be driven within V– to V+ rails. |
| NC1–NC4 (Pins 3, 6, 11, 14) | Analog Normally Closed Terminals | Default-connected analog outputs; open only when corresponding INx = logic high. |
| V+ (Pin 13) | Positive Analog Supply | Accepts +4.5V to +36V (single) or +4.5V to +20V (dual); powers internal switch circuitry and defines upper analog rail. |
| V– (Pin 4) | Negative Analog Supply | Accepts –4.5V to –20V (dual) or GND (single); defines lower analog rail and bias reference for internal logic. |
| GND (Pin 5) | Ground Reference | Digital and substrate reference; must be tied to system ground, separate from analog return if noise-sensitive. |
| N.C. (Pin 12) | No Connection | Not internally bonded; must remain unconnected to avoid parasitic coupling or ESD path disruption. |
Key Features
| Feature | Design Value |
|---|---|
| +3V logic compatibility | Enables direct interface with 3.3V microcontrollers and FPGAs without level shifters, reducing BOM count and layout complexity. |
| Rail-to-rail signal handling | Supports analog signals spanning full V– to V+ range, eliminating clipping in ±12V instrumentation and audio systems. |
| Guaranteed RON flatness (2Ω max) | Maintains consistent on-resistance across signal amplitude, critical for THD <0.01% in audio routing applications. |
| Low charge injection (±30pC) | Minimizes voltage glitch on sampled nodes, improving accuracy in precision sample-and-hold and ADC front-end designs. |
| Power-supply sequencing freedom | Eliminates mandatory V+/V–/VL startup order, simplifying power management in multi-rail systems and avoiding need for external protection diodes. |
Applications
| Audio Signal Routing | Test Equipment Signal Switching |
|---|---|
Use Scenario: Routing line-level stereo signals between multiple sources (DACs, mixers, amplifiers) in professional audio gear. IC Role / Device Role / Timing Role: Quad NC SPST switch providing silent, low-distortion path selection with <0.01% THD at 1kHz. Use Value: 10Ω RON and 96dB crosstalk prevent channel bleed and preserve dynamic range across 20Hz–20kHz bandwidth. |
Use Scenario: Automated signal path configuration in benchtop multimeters and automated test equipment (ATE) fixtures. IC Role / Device Role / Timing Role: Precision analog multiplexer for routing calibration references, DUT signals, and measurement inputs under MCU control. Use Value: ±2.5nA leakage at +85°C ensures stable DC accuracy over temperature; 1.5Ω RON match enables calibrated ratio measurements. |
| Sample-and-Hold Circuits | Avionics Signal Conditioning |
Use Scenario: Sampling high-impedance sensor outputs (e.g., thermocouples, strain gauges) into SAR ADCs with minimal droop. IC Role / Device Role / Timing Role: Low-charge-injection NC switch isolating hold capacitor during acquisition phase. Use Value: ±30pC charge injection limits step error to <1LSB in 16-bit systems with 1nF hold capacitors. |
Use Scenario: Selecting between redundant flight control sensors (e.g., air data modules) in certified avionics subsystems. IC Role / Device Role / Timing Role: Fault-tolerant analog switch enabling automatic failover while maintaining signal continuity. Use Value: –40°C to +85°C operating range meets DO-160 environmental requirements; 10Ω RON ensures minimal gain error in feedback loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX312LCUE+ | Same functionality and pinout, but rated for 0°C to +70°C only; lower max junction temperature derating. | Suitable for commercial-grade instruments without extended temperature requirements. | Select MAX312LCUE+ only if ambient operating temperature stays within 0°C–70°C and long-term reliability at 85°C is not required. |
| ADG1412BRUZ | Quad SPST, but normally open (NO); 1.8Ω RON typical (vs. 10Ω max for MAX312LEUE+); requires 5V logic or level shift for 3.3V control. | Better for low-RON, low-leakage applications where NO default state is acceptable and higher supply voltage is available. | Choose ADG1412BRUZ when ultra-low on-resistance (<2Ω) and sub-nA leakage dominate over NC default behavior and +3V logic compatibility. |
Compared with MAX312LCUE+, the MAX312LEUE+ adds extended temperature support and identical performance; compared with ADG1412BRUZ, it trades lower RON for NC default state, +3V logic compatibility, and wider supply flexibility - making it optimal for ruggedized, microcontroller-driven analog routing where fail-safe closure is required.
Availability
MAX312LEUE+ is available at Aetrix Electronics and suitable for test equipment, avionics signal conditioning, and audio signal routing requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX312LEUE+ 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 MAX312L/MAX313L/MAX314L family was designed specifically for precision analog signal routing in environments demanding low distortion, tight channel matching, and robust operation across wide supply and temperature ranges.
FAQ
What is the maximum analog signal voltage the MAX312LEUE+ can handle?
The MAX312LEUE+ supports rail-to-rail analog signals from V– to V+. With ±15V dual supplies, it handles ±15V signals; with +12V single supply and GND, it handles 0V to +12V. Absolute maximum ratings allow V+ up to +44V and V– down to –44V, but functional analog range remains bounded by the applied supply rails. Always ensure signal voltages stay within V– and V+ to avoid damage or undefined behavior.
Is the MAX312LEUE+ pin-compatible with older MAX312 variants?
Yes, the MAX312LEUE+ is pin-compatible with the legacy MAX312 (non-L) and MAX312C/D/E variants in the same 16-pin TSSOP package. It retains identical pin functions and electrical pinouts, including INx, COMx, NCx, V+, V–, GND, and N.C. However, the MAX312LEUE+ removes the VL pin and eliminates power-supply sequencing constraints - offering backward compatibility with enhanced robustness.
Does the MAX312LEUE+ support single-supply operation?
Yes, the MAX312LEUE+ fully supports single-supply operation from +4.5V to +36V. In this mode, connect V– to GND, set logic inputs relative to GND, and route analog signals between GND and V+. The device maintains 10Ω max on-resistance and ±2.5nA leakage at +85°C under single-supply conditions, making it suitable for battery-powered and industrial 24V systems.
What is the function of Pin 12 (N.C.) on the MAX312LEUE+?
Pin 12 on the MAX312LEUE+ is a no-connect (N.C.) terminal - it is not bonded internally and serves no electrical function. It must remain unconnected on the PCB to prevent unintended coupling, noise pickup, or ESD discharge paths. Do not tie it to GND, V+, or any other net; leave it floating per Maxim's recommended layout practice.
How does the MAX312LEUE+ differ from the MAX313LEUE+?
The MAX312LEUE+ is a quad normally closed (NC) SPST switch, while the MAX313LEUE+ is quad normally open (NO). Their pinouts differ: MAX312LEUE+ uses Pins 3,6,11,14 as NC terminals, whereas MAX313LEUE+ uses those same pins as NO terminals. Both share identical supply ranges, RON specs, logic thresholds, and temperature rating (–40°C to +85°C), but their default states and truth tables are inverted - selecting one depends entirely on fail-safe signal path requirements.
MAX312LEUE+ 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):
- 10Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- Voltage - Supply, Single (V+):
- 4.5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 225ns, 185ns
- -3db Bandwidth:
- -
- Charge Injection:
- 20pC
- Channel Capacitance (CS(off), CD(off)):
- 15pF, 15pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX312LEUE+ FAQ
1.How can I place an order for MAX312LEUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX312LEUE+ 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 MAX312LEUE+ reliable?
The price and inventory of MAX312LEUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX312LEUE+ is usually 5 days.
3.What payment methods are accepted for MAX312LEUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX312LEUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX312LEUE+?
MAX312LEUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX312LEUE+ 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 MAX312LEUE+?
For technical support, including MAX312LEUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX312LEUE+ requirements.
6.How does Aetrix verify that MAX312LEUE+ is sourced from the original manufacturer or authorized distributors?
All MAX312LEUE+ 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 MAX312LEUE+ meets industry standards.
7.What is the process for return or replacement of MAX312LEUE+?
All MAX312LEUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX312LEUE+, 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 MAX312LEUE+ part is unused and in its original packaging.
Return procedure for MAX312LEUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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