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Analog Devices Inc./Maxim Integrated MAX312CSE+
- Part No.:
- MAX312CSE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX312CSE+.pdf
- Description:
- IC SWITCH SPST-NCX4 10OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:268
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Product details
Overview
MAX312CSE+ 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, rail-to-rail signal handling up to ±15V, and 2.5nA max off-leakage at +85°C - enabling high-fidelity audio switching and low-error data acquisition.
For engineers reviewing the MAX312CSE+ datasheet, MAX312CSE+ pinout, MAX312CSE+ application, or MAX312CSE+ equivalent, key selection criteria include verified NC configuration, guaranteed RON flatness (≤2Ω), dual-supply compatibility (±4.5V to ±20V), ESD tolerance >2000V per Method 3015.7, and TSSOP-16 package thermal performance for industrial-grade signal path integrity.
Technical Context
The MAX312CSE+ 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.
Designed for operation across ±4.5V to ±20V dual supplies or +4.5V to +30V single supplies, it maintains ≤10Ω max on-resistance over full temperature range (0°C to +70°C) and supports rail-to-rail analog signals from V− to V+, with internal clamping diodes protecting pins against overvoltage transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 6.5Ω typical, ≤10Ω max - ensures minimal signal attenuation and voltage drop in precision analog paths. |
| RON Matching | ≤1.5Ω max between channels - critical for matched gain/phase in multi-channel instrumentation and balanced audio routing. |
| Analog Signal Range | V− to V+ (rail-to-rail) - supports full dynamic range signal switching without clipping in ±15V or +12V systems. |
| Off-Leakage Current | ±2.5nA max at +85°C - preserves accuracy in high-impedance sample-and-hold and sensor front-end circuits. |
| Supply Range | +4.5V to +30V (single) or ±4.5V to ±20V (dual) - enables flexible integration into legacy test equipment and avionics power domains. |
| ESD Protection | >2000V per Method 3015.7 - reduces need for external protection in board-level ESD-prone environments like PBX interfaces. |
| Crosstalk | >96dB at 20kHz - prevents audible crosstalk in stereo audio routing and adjacent-channel interference in data acquisition. |
Pinout & Package
MAX312CSE+ is housed in a 16-pin narrow SOIC (SO) package (JEDEC MS-012, 3.9mm width), rated for 0°C to +70°C operation. Thermal resistance θJA is 8.70mW/°C above +70°C (696mW max at +70°C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Logic control inputs; active-low logic sense for NC switches - INx = 0V closes channel, INx = VL opens channel. |
| 2, 7, 10, 15 | COM1–COM4 | Analog common terminals - bidirectional signal path connection points for each SPST switch. |
| 3, 6, 11, 14 | NC1–NC4 | Normally closed analog terminals - internally connected to COMx when INx = 0V; open when INx = VL. |
| 4 | V− | Negative analog supply - tied to GND for single-supply operation; defines lower rail for bipolar signal handling. |
| 5 | GND | Logic ground reference - separate from analog supplies to minimize digital noise coupling into analog paths. |
| 12 | VL | Logic supply input - sets logic threshold (2.4V/0.8V); decoupled from V+/V− to ensure robust level-shifting. |
| 13 | V+ | Positive analog supply - establishes upper rail; supports up to +30V for high-voltage test system integration. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail® Signal Handling | Supports analog signals from V− to V+ without distortion - eliminates level-shifting circuitry in ±15V instrumentation designs. |
| Guaranteed RON Flatness | ≤2Ω max variation over full signal range - ensures consistent THD performance across audio bandwidth (20Hz–20kHz). |
| Pin Compatibility | Direct replacement for DG411 - simplifies upgrade of legacy test equipment without PCB redesign. |
| Low Charge Injection | ±30pC max - minimizes voltage glitch in sample-and-hold circuits, reducing settling time and calibration drift. |
| Break-Before-Make Timing | Not applicable - MAX312 is SPST NC only; no break-before-make behavior required or specified. |
Applications
| Audio Signal Routing | Test Equipment Signal Switching |
|---|---|
|
Use Scenario: Selecting between multiple microphone or line-level inputs in professional audio mixers. IC Role / Device Role / Timing Role: Quad NC analog switch providing low-distortion, low-crosstalk signal path selection with <10Ω on-resistance. Use Value: Maintains THD < −100dB at 1kHz (per Typical Operating Characteristics), preserving signal fidelity across all four channels simultaneously. |
Use Scenario: Multiplexing DUT signals to measurement instruments (oscilloscopes, DMMs) in automated test systems. IC Role / Device Role / Timing Role: Precision SPST switch enabling repeatable, low-leakage connections under varying supply conditions (±15V). Use Value: 2.5nA max off-leakage at +85°C ensures measurement accuracy remains stable during extended thermal soak testing. |
| PBX/PABX Line Interface | Avionics Signal Conditioning |
|
Use Scenario: Isolating ringing generators, codec paths, and hybrid circuits in telecom central office equipment. IC Role / Device Role / Timing Role: Normally closed switch acting as fail-safe signal path; opens only on command for fault isolation. Use Value: Guaranteed RON match ≤1.5Ω ensures balanced impedance in two-wire telephony loops, minimizing echo and sidetone. |
Use Scenario: Routing sensor outputs (e.g., RTD, thermocouple) to ADCs in flight control computers operating at −55°C to +125°C qualified variants. IC Role / Device Role / Timing Role: High-reliability analog switch supporting MIL-STD-883-compliant screening (via MAX312MJE variant). Use Value: Dual-supply operation (±4.5V to ±20V) matches avionics 28VDC-derived ±15V rails, eliminating external regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX313CSE+ | Quad SPST, normally open (NO) configuration - complementary logic state vs. MAX312's NC default. | Suitable where default-open safety state is required (e.g., power-off signal isolation). | Select MAX313CSE+ when fail-safe open behavior is mandated; pinout and specs otherwise identical. |
| DG411DN+ | Same pinout, 35V max supply, 35Ω typical RON, no guaranteed RON match or flatness spec. | Legacy industrial use; higher on-resistance limits bandwidth and increases THD in audio paths. | Choose DG411DN+ only for cost-sensitive, non-precision applications where 6.5Ω RON and matching are not required. |
Compared with MAX313CSE+, MAX312CSE+ provides fail-safe continuity in power-loss scenarios; compared with DG411DN+, it delivers 5.4× lower on-resistance and guaranteed matching - directly improving SNR in 16-bit data acquisition and harmonic distortion in audio routing.
Availability
MAX312CSE+ is available at Aetrix Electronics and suitable for test equipment, communication systems, and avionics requiring stable component supply with guaranteed 0°C to +70°C industrial temperature grade performance.
Supply support for MAX312CSE+ 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 U.S.-based 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 precision analog signal routing in environments demanding low on-resistance, tight channel matching, and robust bipolar supply operation - targeting test instrumentation, telecom infrastructure, and aerospace signal conditioning.
FAQ
What is the default state of the switches in MAX312CSE+?
The MAX312CSE+ features four normally closed (NC) SPST analog switches. When all INx inputs are at logic low (0V), the internal connection between each COMx and NCx terminal is closed. Applying logic high (VL) to any INx opens that channel. This fail-safe NC behavior ensures signal continuity during power loss or control failure - a critical feature in PBX line protection and avionics monitoring circuits where uninterrupted signal path is mandatory. The MAX312CSE+ datasheet confirms this configuration in its functional diagrams and truth tables.
Can MAX312CSE+ operate from a single +12V supply?
Yes, MAX312CSE+ supports single-supply operation from +4.5V to +30V. With V+ = +12V and V− tied to GND (pin 4), it delivers 12.5Ω typical on-resistance and maintains rail-to-rail signal handling from 0V to +12V. Leakage remains ≤2.5nA at +85°C, and turn-on time is 425ns (typical). This configuration is validated in the "Electrical Characteristics-Single Supply" table of the MAX312CSE+ datasheet and is widely used in portable test gear and +12V industrial PLC I/O modules.
Is MAX312CSE+ pin-compatible with DG411?
Yes, MAX312CSE+ is explicitly pin-compatible with DG411 (and DG412/DG413) as stated in the "Features" section of its datasheet. All 16 pins - including INx, COMx, NCx, V+, V−, GND, and VL - map identically. This allows direct replacement in existing DG411-based layouts without PCB modification. However, MAX312CSE+ improves upon DG411 with lower on-resistance (6.5Ω vs. 35Ω typ), guaranteed RON matching (≤1.5Ω), and enhanced ESD rating (>2000V vs. unspecified), making it a performance upgrade path.
What is the maximum analog signal voltage range supported by MAX312CSE+?
MAX312CSE+ supports analog signals from V− to V+, enabling true rail-to-rail operation. With dual supplies of ±15V, the signal range is −15V to +15V; with single +30V and GND, it is 0V to +30V. Absolute maximum ratings allow V+ up to +44V and V− down to −44V, but sustained operation must stay within the specified supply ranges. Internal clamping diodes protect pins if signals exceed rails, provided forward current is limited to 30mA - a design detail confirmed in the "Absolute Maximum Ratings" and "Pin Description" sections of the MAX312CSE+ datasheet.
Does MAX312CSE+ require an external logic supply (VL)?
Yes, MAX312CSE+ requires a dedicated logic supply (VL) pin (pin 12) to define its input thresholds. VL must be between (GND − 0.3V) and (V+ + 0.3V), and is typically set to +5V for TTL/CMOS compatibility. This separation from analog supplies allows independent optimization: analog rails can be ±15V while logic operates cleanly at +5V, preventing noise coupling. The MAX312CSE+ datasheet specifies VINH = 2.4V and VINL = 0.8V when VL = 5V, and guarantees proper switching across the full temperature range with this configuration.
MAX312CSE+ 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:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX312CSE+ FAQ
1.How can I place an order for MAX312CSE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX312CSE+ 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 MAX312CSE+ reliable?
The price and inventory of MAX312CSE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX312CSE+ is usually 5 days.
3.What payment methods are accepted for MAX312CSE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX312CSE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX312CSE+?
MAX312CSE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX312CSE+ 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 MAX312CSE+?
For technical support, including MAX312CSE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX312CSE+ requirements.
6.How does Aetrix verify that MAX312CSE+ is sourced from the original manufacturer or authorized distributors?
All MAX312CSE+ 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 MAX312CSE+ meets industry standards.
7.What is the process for return or replacement of MAX312CSE+?
All MAX312CSE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX312CSE+, 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 MAX312CSE+ part is unused and in its original packaging.
Return procedure for MAX312CSE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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