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Home > Products > Integrated Circuits (ICs) > Interface > Analog Switches, Multiplexers, Demultiplexers

Analog Devices Inc./Maxim Integrated MAX312CPE+

Name: MAX312CPE+
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX312CPE+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX312CPE+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-DIP (0.300", 7.62mm)

Datasheet:: MAX312CPE+.pdf

Description:: IC SWITCH SPST-NCX4 10OHM 16DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MAX312CPE+ from Maxim Integrated is a quad, normally closed (NC), single-pole/single-throw (SPST) CMOS analog switch optimized for precision signal routing in bipolar and single-supply systems. It delivers 6.5Ω typical on-resistance, 1.5Ω max on-resistance matching between channels, and rail-to-rail signal handling from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply - enabling low-distortion audio switching and high-fidelity data acquisition.

For engineers reviewing the MAX312CPE+ datasheet, MAX312CPE+ pinout, MAX312CPE+ application, or MAX312CPE+ equivalent, key selection criteria include guaranteed R_ON flatness (≤2Ω), <2.5nA off-leakage at +85°C, >96dB crosstalk at 20kHz, ESD tolerance >2000V per Method 3015.7, and compatibility with DG411/DG412/DG413 footprints.

Technical Context

The MAX312CPE+ implements a fully complementary CMOS transmission-gate architecture with matched P- and N-channel devices per channel, ensuring symmetrical conduction and minimal charge injection (±30pC). Its logic interface accepts TTL/CMOS-compatible inputs referenced to VL (2.4V high, 0.8V low) independent of analog supply rails.

It operates across three temperature grades; MAX312CPE+ is rated for 0°C to +70°C and packaged in 16-pin plastic DIP. The device supports break-before-make timing only in the MAX314 variant - MAX312CPE+ has no internal interlock and requires external sequencing for critical switching sequences.

Key Specifications

Parameter	Value and Actual Design Meaning
On-resistance (R_ON)	6.5Ω typical (ensures ≤0.065% gain error in 10kΩ source/load audio paths)
R_ON match	≤1.5Ω max (minimizes channel-to-channel amplitude mismatch in multi-path signal routing)
Analog signal range	Rail-to-rail: V_COM, V_NC = V₋ to V₊ (supports full-swing ±15V or 0–12V signals without clipping)
Off-leakage current	±2.5nA at +85°C (enables stable DC-coupled sample-and-hold hold times >10s with 1μF capacitor)
Crosstalk	>96dB at 20kHz (prevents audible inter-channel bleed in stereo audio routing)
ESD protection	>2000V per Method 3015.7 (meets industrial handling requirements without additional protection circuitry)
Supply range	+4.5V to +30V single or ±4.5V to ±20V dual (enables direct integration into legacy ±15V op-amp or modern 5V/12V systems)

Pinout & Package

MAX312CPE+ is housed in a 16-pin plastic DIP (dual in-line package) with 0.300" wide body and 0.100" lead pitch, compatible with standard through-hole PCB assembly and socketing.

Pin/Terminal	Circuit Role	Design Meaning
1, 8, 9, 16	IN1–IN4	Logic control inputs; active-low logic sense (IN=0 → switch ON for NC configuration)
2, 7, 10, 15	COM1–COM4	Analog common terminals; bidirectional signal path entry/exit points
3, 6, 11, 14	NC1–NC4	Normally closed analog terminals; shorted to COM when IN = 0
4	V₋	Negative analog supply; connect to GND for single-supply operation
5	GND	Logic ground reference; separate from analog ground for noise isolation
12	VL	Logic supply input; decouples logic threshold from analog rails (typically +5V)
13	V₊	Positive analog supply; sets upper rail for analog signal range

Key Features

Feature	Design Value
Rail-to-rail signal handling	Supports full-swing analog signals from V₋ to V₊ without distortion or clipping, critical for ±10V instrumentation front-ends
Guaranteed R_ON flatness	≤2Ω variation over entire signal range (±10V), preserving linearity in precision measurement paths
Low charge injection	±30pC maximum (limits voltage glitch on sampled capacitors in data acquisition hold circuits)
Pin compatibility	Direct replacement for DG411 in NC configuration - same pinout, logic polarity, and supply interface
High-frequency isolation	−65dB off-isolation at 1MHz (suppresses RF coupling between unused and active signal paths)

Applications

Test Equipment	Audio Signal Routing
Use Scenario: Automated test system switching between multiple sensor inputs and DMM/oscilloscope channels. IC Role / Device Role / Timing Role: Quad SPST NC switch providing low-R_ON, low-leakage signal path selection under microcontroller control. Use Value: 6.5Ω R_ON and ≤1.5Ω channel matching ensure consistent gain calibration across all four test channels.	Use Scenario: Stereo mixer routing left/right channels to monitor outputs, effects loops, or recording paths. IC Role / Device Role / Timing Role: Normally closed analog switch enabling fail-safe mute-on-power-loss behavior in pro-audio gear. Use Value: Rail-to-rail ±15V operation preserves full dynamic range of line-level audio without level-shifting circuitry.
Avionics Signal Conditioning	Data Acquisition Systems
Use Scenario: Selecting between redundant flight sensor outputs (e.g., airspeed, altitude) before ADC conversion. IC Role / Device Role / Timing Role: High-reliability analog multiplexer with ESD-hardened I/O for harsh airborne environments. Use Value: >2000V ESD rating and −55°C to +125°C qualified variants (e.g., MAX312MJE) support DO-160 compliance.	Use Scenario: Multiplexing thermocouple, RTD, and strain gauge signals into a shared precision ADC. IC Role / Device Role / Timing Role: Low-leakage, low-thermal-EMF analog switch minimizing offset drift and hold-time errors. Use Value: 2.5nA max off-leakage at +85°C enables >10-second hold time with 1μF sampling capacitor in 16-bit SAR ADC systems.

Test Equipment

Audio Signal Routing

Use Scenario: Automated test system switching between multiple sensor inputs and DMM/oscilloscope channels.

IC Role / Device Role / Timing Role: Quad SPST NC switch providing low-R_ON, low-leakage signal path selection under microcontroller control.

Use Value: 6.5Ω R_ON and ≤1.5Ω channel matching ensure consistent gain calibration across all four test channels.

Use Scenario: Stereo mixer routing left/right channels to monitor outputs, effects loops, or recording paths.

IC Role / Device Role / Timing Role: Normally closed analog switch enabling fail-safe mute-on-power-loss behavior in pro-audio gear.

Use Value: Rail-to-rail ±15V operation preserves full dynamic range of line-level audio without level-shifting circuitry.

Avionics Signal Conditioning

Data Acquisition Systems

Use Scenario: Selecting between redundant flight sensor outputs (e.g., airspeed, altitude) before ADC conversion.

IC Role / Device Role / Timing Role: High-reliability analog multiplexer with ESD-hardened I/O for harsh airborne environments.

Use Value: >2000V ESD rating and −55°C to +125°C qualified variants (e.g., MAX312MJE) support DO-160 compliance.

Use Scenario: Multiplexing thermocouple, RTD, and strain gauge signals into a shared precision ADC.

IC Role / Device Role / Timing Role: Low-leakage, low-thermal-EMF analog switch minimizing offset drift and hold-time errors.

Use Value: 2.5nA max off-leakage at +85°C enables >10-second hold time with 1μF sampling capacitor in 16-bit SAR ADC systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX313CPE+	Normally open (NO) configuration vs. MAX312CPE+'s NC; identical R_ON, leakage, and timing specs	Suitable where default-open safety state is required (e.g., power-off disconnect)	Select MAX313CPE+ when fail-open behavior is mandated; pinout and logic polarity are identical
DG411DN	Higher typical R_ON (35Ω), wider temp range (−40°C to +85°C), no VL pin (logic tied to V+)	Less suitable for low-distortion audio or precision DC-coupled paths due to higher R_ON and mismatch	Choose DG411DN only if legacy footprint reuse is mandatory and performance trade-offs are acceptable

Compared with MAX312CPE+, MAX313CPE+ offers identical performance in an NO configuration for safety-critical defaults, while DG411DN provides pin compatibility at the cost of 5× higher on-resistance and reduced rail-to-rail capability - making MAX312CPE+ optimal for high-fidelity, low-leakage, and rail-swing-sensitive designs.

Availability

MAX312CPE+ is available at Aetrix Electronics and suitable for test equipment, avionics signal conditioning, and precision data acquisition systems requiring stable component supply across extended production lifecycles.

Supply support for MAX312CPE+ 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The MAX312/MAX313/MAX314 family was designed specifically for low-distortion, low-leakage analog signal routing in test, measurement, and audio systems - emphasizing R_ON matching, rail-to-rail operation, and robust ESD tolerance.

FAQ

What is the logic polarity of MAX312CPE+?

The MAX312CPE+ uses active-low logic: when INx = 0V (or logic low), the corresponding NC switch closes (COM–NC path enabled); when INx = VL (typically +5V), the switch opens. This matches DG411 pinout and simplifies drop-in replacement in existing NC-switch designs.

Can MAX312CPE+ operate from a single +5V supply?

Yes - MAX312CPE+ supports single-supply operation from +4.5V to +30V. With V+ = +5V and V− tied to GND, it handles analog signals from 0V to +5V. Note that R_ON increases slightly (~12.5Ω typ) at low V+, and VL must be supplied separately (e.g., +3.3V or +5V) for proper logic threshold.

Does MAX312CPE+ require external protection diodes for overvoltage?

No - MAX312CPE+ includes internal overvoltage protection circuitry. However, if analog signals exceed V+ or fall below V−, internal clamping diodes conduct. To avoid damage, limit forward current to ≤30mA per diode; external series resistors are recommended for sustained overvoltage conditions beyond absolute max ratings.

How does MAX312CPE+ compare to MAX314CPE+ in pinout and function?

MAX312CPE+ (quad NC) and MAX314CPE+ (dual NC + dual NO) share identical pinout and package but differ in internal switch configuration. Pins 3,6,11,14 are NC on MAX312CPE+, whereas MAX314CPE+ assigns NC to pins 3,6 and NO to pins 11,14 - requiring firmware or layout changes for functional substitution.

Is MAX312CPE+ suitable for audio applications up to 20kHz?

Yes - MAX312CPE+ achieves >96dB crosstalk at 20kHz and <0.01% THD at 1kHz with 5V_RMS into 600Ω, meeting professional audio requirements. Its low R_ON flatness (≤2Ω) and rail-to-rail swing preserve frequency response and dynamic range without external biasing or level-shifting networks.

MAX312CPE+ 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 ~ 30V

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:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 16-PDIP

MAX312CPE+ FAQ

1.How can I place an order for MAX312CPE+ through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX312CPE+ 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 MAX312CPE+ reliable?

The price and inventory of MAX312CPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX312CPE+ is usually 5 days.

3.What payment methods are accepted for MAX312CPE+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX312CPE+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX312CPE+?

MAX312CPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX312CPE+ 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 MAX312CPE+?

For technical support, including MAX312CPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX312CPE+ requirements.

6.How does Aetrix verify that MAX312CPE+ is sourced from the original manufacturer or authorized distributors?

All MAX312CPE+ 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 MAX312CPE+ meets industry standards.

7.What is the process for return or replacement of MAX312CPE+?

All MAX312CPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX312CPE+, 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 MAX312CPE+ part is unused and in its original packaging.

Return procedure for MAX312CPE+:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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