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Analog Devices Inc./Maxim Integrated MAX351CPE+
- Part No.:
- MAX351CPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX351CPE+.pdf
- Description:
- IC SWITCH SPST-NCX4 35OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,248
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Product details
Overview
MAX351CPE+ from Maxim Integrated is a precision quad SPST analog switch with four normally closed (NC) channels, fabricated using a 44V silicon-gate process. It delivers ≤35Ω on-resistance (max), <2Ω channel-to-channel match, <10pC charge injection, <6nA off-leakage at +85°C, and rail-to-rail analog signal handling up to ±15.5V - enabling high-accuracy signal routing in military radios and guidance systems.
For engineers reviewing the MAX351CPE+ datasheet, MAX351CPE+ pinout, MAX351CPE+ application, or MAX351CPE+ equivalent, key selection criteria include guaranteed on-resistance flatness (∆3Ω max), bipolar/singlesupply flexibility (±4.5V to ±20V or +10V to +30V), CMOS/TTL logic compatibility, ESD >2000V, and NC-switch topology for fail-safe signal path closure.
Technical Context
The MAX351CPE+ implements monolithic CMOS SPST switches with substrate tied to V+, enabling robust rail-to-rail operation across ±4.5V to ±20V or +10V to +30V supplies. Its logic inputs accept TTL/CMOS levels via dedicated VL pin, decoupling control voltage from analog supply domains.
Each of the four NC switches features matched on-resistance (<2Ω max mismatch), flat RON over full analog range (∆3Ω max), and low charge injection (≤10pC), ensuring minimal transient disturbance in sample-and-hold and precision test equipment circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On Resistance | ≤35Ω max - ensures minimal signal attenuation and gain error in precision analog paths |
| On Resistance Match | <2Ω max between channels - enables accurate multi-channel signal multiplexing without calibration |
| Charge Injection | ≤10pC - reduces settling error and droop in sample-and-hold and ADC front-end applications |
| Off-Leakage Current | <6nA at +85°C - preserves signal integrity in high-impedance sensor interfaces and battery-operated systems |
| Supply Range | ±4.5V to ±20V or +10V to +30V - supports both bipolar instrumentation and unipolar industrial power rails |
| ESD Rating | >2000V per Method 3015.7 - enhances reliability in handling-sensitive military and avionics environments |
| Analog Signal Range | ±15.5V - enables full-rail signal switching without clipping in ±15V systems |
Pinout & Package
MAX351CPE+ uses a 16-pin plastic DIP package (0.300" wide), RoHS-compliant and rated for 0°C to +70°C operation. Pin 1 is NC1, pin 2 is V−, pin 3 is GND, pin 4 is NC4, pin 5 is COM4, pin 6 is IN4, pin 7 is IN3, pin 8 is COM3, pin 9 is NC3, pin 10 is VL, pin 11 is V+, pin 12 is NC2, pin 13 is COM2, pin 14 is IN2, pin 15 is IN1, and pin 16 is COM1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Logic Control Input | Active-low control for NC switches - logic '0' closes path, '1' opens; compatible with TTL/CMOS via VL |
| COM1–COM4 | Analog Switch Common Terminal | Input/output node for each NC channel - bidirectional, rail-to-rail capable |
| NC1–NC4 | Analog Normally Closed Terminal | Default-closed analog path - maintains continuity during power loss or logic reset |
| V+, V− | Analog Supply Rails | Support ±4.5V to ±20V operation; V+ connected to substrate for latch-up immunity |
| VL | Logic Supply Voltage | Decouples logic threshold from analog rails - set to +5V for TTL, V+ for CMOS |
| GND | Ground Reference | Signal return for logic and internal biasing - separate from analog ground in mixed-signal layouts |
Key Features
| Feature | Design Value |
|---|---|
| Normally Closed (NC) Topology | Ensures default signal path closure during power-down or logic fault - critical for safety-critical guidance systems |
| Rail-to-Rail Analog Handling | Supports ±15.5V signal swing with no distortion - eliminates need for level-shifting in ±15V op-amp circuits |
| Guaranteed On-Resistance Flatness | ∆3Ω max over full analog range - maintains consistent gain and linearity across input voltage |
| Low Power Consumption | 35µW typical - extends battery life in portable test equipment and handheld radios |
| Bipolar & Single-Supply Operation | Operates identically across ±4.5V to ±20V or +10V to +30V - simplifies design reuse across platform variants |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
|
Use Scenario: Signal routing between RF front-end modules and baseband processors under harsh EMI and temperature cycling. IC Role / Device Role / Timing Role: Precision NC analog switch isolating receive paths during transmit bursts to prevent desensitization. Use Value: <6nA leakage at +85°C prevents DC offset drift; >2000V ESD withstand protects against field-handling damage. |
Use Scenario: Multiplexing inertial sensor outputs (gyros, accelerometers) into shared ADC channels with minimal crosstalk. IC Role / Device Role / Timing Role: Quad NC switch providing fail-safe signal continuity during processor reset or watchdog timeout. Use Value: ≤2Ω on-resistance match ensures channel-to-channel gain tracking within 0.02% - eliminating calibration overhead. |
| Sample-and-Hold Circuits | Battery-Operated Test Equipment |
|
Use Scenario: Capturing fast transient waveforms in oscilloscope front-ends with sub-microsecond acquisition windows. IC Role / Device Role / Timing Role: Low-charge-injection NC switch sampling analog inputs into hold capacitors without droop-induced error. Use Value: ≤10pC charge injection limits hold-step error to <1 LSB in 16-bit systems with 1nF hold capacitors. |
Use Scenario: Portable multimeter analog signal path switching between voltage, current, and resistance measurement modes. IC Role / Device Role / Timing Role: Low-power NC switch enabling automatic range selection while maintaining zero-power default state. Use Value: 35µW typical power dissipation extends AA-battery life beyond 200 hours in continuous-use mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX352CPE+ | Four normally open (NO) topology vs. MAX351CPE+'s NC configuration; identical RON, leakage, and timing specs | Suitable where default-open signal path is required (e.g., power sequencing, enable gating) | Select MAX352CPE+ only when fail-open behavior is mandatory - not a drop-in replacement due to inverted logic function |
| ADG441BNZ | Quad NO switch with 40Ω RON (max), 25pC charge injection, and −40°C to +85°C rating - lacks guaranteed RON match or flatness spec | Better suited for general-purpose switching where precision matching is non-critical | Choose ADG441BNZ for cost-sensitive industrial controls; avoid in sample-and-hold or guidance systems requiring <2Ω match |
Compared with MAX352CPE+, the MAX351CPE+ provides fail-safe continuity but requires inverted control logic; versus ADG441BNZ, it delivers superior precision (RON match, charge injection) at higher cost and narrower temp range - making it optimal for military-grade signal integrity.
Availability
MAX351CPE+ is available at Aetrix Electronics and suitable for military radios, guidance and control systems, sample-and-hold circuits, battery-operated test equipment, and heads-up displays requiring stable component supply across extended production lifecycles.
Supply support for MAX351CPE+ 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 ICs for demanding applications in industrial, automotive, and communications markets.
The MAX351/MAX352/MAX353 family was engineered specifically for precision analog signal routing in mil-aero and test instrumentation - emphasizing guaranteed parameter matching, rail-to-rail operation, and robust ESD tolerance.
FAQ
What is the operating temperature range for MAX351CPE+?
The MAX351CPE+ is specified for 0°C to +70°C operation. This commercial-grade temperature range aligns with its plastic DIP packaging and targets applications such as test equipment and non-extreme-environment communications systems. For extended temperature operation, consider the MAX351EPE (−40°C to +85°C) or MAX351MJE (−55°C to +125°C) variants. The MAX351CPE+ datasheet guarantees all electrical specifications within this range.
How does the normally closed (NC) configuration of MAX351CPE+ affect system safety?
The MAX351CPE+'s NC architecture ensures analog signal continuity when logic inputs are unpowered, floating, or held high - providing inherent fail-safe behavior in guidance systems and military radios. In contrast to NO switches, this prevents signal interruption during power-up sequences or microcontroller resets. System designers leverage this to maintain sensor data flow or critical control paths without external supervision circuitry.
Can MAX351CPE+ operate from a single +12V supply?
Yes, MAX351CPE+ supports single-supply operation from +10V to +30V. When using +12V, connect V− to GND, set VL to +5V for TTL compatibility, and ensure analog signals remain within 0V to +12V. The device maintains ≤35Ω on-resistance and <6nA leakage at +85°C under these conditions. Refer to the "ELECTRICAL CHARACTERISTICS-Single Supply" table in the MAX351CPE+ datasheet for verified performance data.
What is the significance of the guaranteed on-resistance match of <2Ω between channels in MAX351CPE+?
The <2Ω guaranteed on-resistance match between all four channels of MAX351CPE+ ensures consistent gain and minimal channel-to-channel error in multiplexed precision systems - such as multi-sensor data acquisition in guidance platforms. This specification eliminates the need for per-channel calibration in 12-bit to 16-bit measurement applications, directly improving throughput and reducing firmware complexity compared to unmatched switches.
Is MAX351CPE+ pin-compatible with other devices in the MAX351/MAX352/MAX353 family?
Yes, MAX351CPE+, MAX352CPE+, and MAX353CPE+ share identical 16-pin DIP pinouts and package dimensions. However, their switch configurations differ: MAX351CPE+ is quad NC, MAX352CPE+ is quad NO, and MAX353CPE+ is dual NO/dual NC. While PCB layout is interchangeable, logic polarity and signal routing must be redesigned to accommodate functional differences - they are footprint-compatible but not functionally interchangeable.
MAX351CPE+ 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):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 9pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX351CPE+ FAQ
1.How can I place an order for MAX351CPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX351CPE+ 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 MAX351CPE+ reliable?
The price and inventory of MAX351CPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX351CPE+ is usually 5 days.
3.What payment methods are accepted for MAX351CPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX351CPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX351CPE+?
MAX351CPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX351CPE+ 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 MAX351CPE+?
For technical support, including MAX351CPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX351CPE+ requirements.
6.How does Aetrix verify that MAX351CPE+ is sourced from the original manufacturer or authorized distributors?
All MAX351CPE+ 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 MAX351CPE+ meets industry standards.
7.What is the process for return or replacement of MAX351CPE+?
All MAX351CPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX351CPE+, 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 MAX351CPE+ part is unused and in its original packaging.
Return procedure for MAX351CPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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