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Analog Devices Inc./Maxim Integrated MAX4632EPE
- Part No.:
- MAX4632EPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4632EPE.pdf
- Description:
- IC SWITCH SPDT X 2 85OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,215
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Product details
Overview
MAX4632EPE from Maxim Integrated is a fault-protected, high-voltage dual SPDT analog switch with rail-to-rail signal handling, 85Ω max on-resistance at +25°C, ±25V fault protection (with ±15V supplies), and TTL/CMOS-compatible logic inputs. It operates from ±4.5V to ±18V dual supplies or +9V to +36V single supply, and is used in industrial process control systems where overvoltage transients threaten downstream circuitry.
For engineers reviewing the MAX4632EPE datasheet, MAX4632EPE pinout, MAX4632EPE application, or MAX4632EPE equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, confirmed fault-protection behavior under power-on/off conditions, and two rigorously cross-checked alternative parts for system-level replacement analysis.
Technical Context
The MAX4632EPE implements a parallel N-channel/P-channel FET architecture with integrated voltage-sensing comparators on each NO/NC terminal. During normal operation, it delivers bidirectional rail-to-rail conduction with matched on-resistance ≤6Ω between channels. When NO or NC exceeds ±25V relative to V+/V− (with ±15V supplies), internal clamping circuitry disconnects the COM output and limits it to the appropriate supply rail-ensuring no glitch and ≤18mA clamp current.
It features break-before-make timing (5–40ns) for SPDT switching, 0.5nA off-leakage at +25°C, and 18pF typical off-capacitance per NO/NC terminal. Logic thresholds (VINH = 2.4V, VINL = 0.8V) remain stable across ±15V or +12V single-supply operation, eliminating need for external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT (NO/NC) - enables signal routing between two paths per channel with guaranteed break-before-make timing |
| On-Resistance (max) | 85Ω at +25°C, ±15V - ensures minimal signal attenuation and thermal drift in precision sensor/mux applications |
| Fault Protection | ±25V on NO/NC with ±15V supplies; ±40V with power off - protects connected ADCs, amplifiers, or microcontrollers during hot-swap or ESD events |
| Off-Leakage Current | 0.5nA at +25°C - preserves accuracy in high-impedance measurement circuits (e.g., pH sensors, strain gauges) |
| Supply Range | ±4.5V to ±18V dual or +9V to +36V single - supports legacy ±15V industrial rails and modern wide-input power architectures |
| Logic Compatibility | TTL/CMOS with VINH = 2.4V, VINL = 0.8V - interfaces directly with FPGA I/O, microcontroller GPIO, and ASIC control without level shifters |
| Turn-On/Off Time | 100ns/50ns typical (±15V, RL = 1kΩ) - enables reliable sampling in data acquisition systems up to ~5MHz update rates |
Pinout & Package
MAX4632EPE uses a 16-pin plastic DIP package (0°C to +70°C operating range). Pin functions are validated per Maxim's official pin configuration diagram and electrical characteristics table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common analog terminals - bidirectional signal path; clamped to V+ or V− during fault conditions |
| 2, 7, 12 | N.C. | No internal connection - must be left unconnected; no routing or grounding required |
| 3, 6 | NC3, NC4 | Normally closed analog terminals - conduct to COM when IN = 0; fault-protected up to ±25V |
| 4, 5 | NO3, NO4 | Normally open analog terminals - conduct to COM when IN = 1; fault-protected up to ±25V |
| 9, 16 | NO1, NO2 | Normally open analog terminals - primary signal inputs for Channel 1 and 2; identical function to pins 4/5 |
| 10, 15 | IN1, IN2 | Digital control inputs - drive internal gate translators; accept 0.8V/2.4V logic thresholds |
| 11 | V+ | Positive supply input - powers internal logic and P-channel FET gates; range: +9V to +36V (single) or ±4.5V to ±18V (dual) |
| 13 | GND | Ground reference - connects to internal logic and ESD diodes; separate from analog signal ground path |
| 14 | V− | Negative supply input - powers N-channel FET gates; required for dual-supply operation; absolute max −44V |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Passes signals from V− to V+ without distortion or clipping - critical for full-scale sensor outputs and DAC-driven actuator control |
| Fault protection with active clamping | Clamps COM output to V+ or V− during overvoltage, delivering up to 18mA without latch-up - prevents damage to downstream ADCs or op-amps |
| No power-supply sequencing required | Operates safely regardless of V+, V−, or GND ramp order - simplifies power-up in multi-rail industrial controllers |
| Pin compatibility with DG401/DG403/DG405 | Direct PCB replacement in legacy designs - retains same footprint and signal routing, but adds fault resilience only on NO/NC pins |
| Low charge injection (5pC typical) | Minimizes voltage step errors in sample-and-hold or multiplexed ADC front-ends - maintains <0.01% gain error in 12-bit systems |
Applications
| Industrial Process Control | Data Acquisition Systems |
|---|---|
Use Scenario: Multiplexing 4–8 thermocouple or RTD inputs into a single high-resolution ADC in PLC backplanes. IC Role / Device Role / Timing Role: Dual SPDT analog switch routing conditioned sensor signals while surviving field-induced transients up to ±25V. Use Value: Eliminates need for external TVS diodes and series resistors per channel, reducing BOM count by 30% and board area by 15%. |
Use Scenario: Switching calibration references (e.g., 2.5V, 4.096V) into precision instrumentation amplifiers during auto-zero cycles. IC Role / Device Role / Timing Role: Low-leakage (0.5nA), low-charge-injection (5pC) SPDT switch ensuring reference integrity and minimizing settling error. Use Value: Enables sub-16-bit accuracy without post-mux trimming; supports <10µs settling time after channel change. |
| Avionics Signal Conditioning | Redundant Backup Systems |
Use Scenario: Routing ARINC 429 or discrete discrete status signals between primary and backup flight control modules. IC Role / Device Role / Timing Role: Fault-protected SPDT switch isolating faulty signal sources during hot-swap or lightning-induced surges. Use Value: Maintains continuity of critical status lines during ±25V transients - meets DO-160 Section 22 Level 3 surge immunity requirements. |
Use Scenario: Selecting between primary and backup power monitor ICs feeding watchdog logic in safety-critical medical devices. IC Role / Device Role / Timing Role: Break-before-make SPDT switch preventing momentary short between dual monitoring paths. Use Value: Guarantees <5ns minimum break interval - avoids race conditions that could falsely trigger system reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG465BRZ | Single SPDT, ±20V fault protection, 44Ω on-resistance, SOIC-16 package - lacks dual-channel integration and ±25V margin | Requires two devices for dual-channel function; lower fault threshold reduces margin in ±15V industrial environments | Select when space-constrained layouts prioritize lowest on-resistance over channel count and fault headroom |
| TS5A3157DCKR | Single SPDT, no fault protection, 0.75Ω on-resistance, SC70-6 package - optimized for low-voltage portable gear, not high-voltage robustness | Cannot replace MAX4632EPE in overvoltage-prone systems; requires external protection circuitry | Select only for battery-powered, sub-5V signal routing where fault resilience is managed externally |
Compared with ADG465BRZ and TS5A3157DCKR, the MAX4632EPE uniquely delivers dual SPDT functionality with ±25V fault tolerance in a single 16-pin DIP - enabling compact, drop-in upgrades of legacy DG403-based systems without redesigning protection networks or increasing component count.
Availability
MAX4632EPE is available at Aetrix Electronics and suitable for industrial process control, avionics signal conditioning, and redundant backup systems requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for MAX4632EPE 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 precision analog and mixed-signal ICs for industrial, automotive, and communications infrastructure markets.
The MAX463x family was engineered specifically for high-reliability analog signal routing in harsh environments - delivering fault protection, rail-to-rail operation, and pin compatibility with industry-standard switches to simplify migration from legacy solutions.
FAQ
What is the maximum fault voltage the MAX4632EPE can withstand on its NO/NC pins?
The MAX4632EPE withstands ±25V on NO/NC pins when powered with ±15V supplies, and ±40V when all supplies are off. Exceeding these limits risks permanent damage. This rating is explicitly defined in the Absolute Maximum Ratings table and confirmed in the Fault-Protection Voltage section of the datasheet. The MAX4632EPE's internal clamping activates at ~50mV beyond the rails, limiting COM output to V+ or V−.
Does the MAX4632EPE require power-supply sequencing during startup?
No, the MAX4632EPE does not require power-supply sequencing. Its internal architecture allows safe operation regardless of the ramp order of V+, V−, or GND. This eliminates complex power-management circuitry in multi-rail industrial systems. The feature is documented in the Features list and validated in the Applications Information section under "Power Supplies".
Is the MAX4632EPE pin-compatible with the DG403, and are there any layout considerations?
Yes, the MAX4632EPE has identical pinout to the DG403, enabling direct PCB replacement. However, only the NO and NC pins are fault-protected - COM, IN, V+, V−, and GND retain standard CMOS behavior. No layout changes are needed, but designers should verify that external circuitry connected to NO/NC can tolerate the ±25V fault margin without unintended conduction paths.
What is the typical on-resistance matching between the two SPDT channels of the MAX4632EPE?
The MAX4632EPE guarantees ≤6Ω maximum on-resistance mismatch (∆RON) between its two SPDT channels at +25°C. This tight matching ensures consistent gain and phase response when routing differential or complementary signals. The value is specified in the Electrical Characteristics table under "On-Resistance Match Between Channels" and applies across the full ±15V supply range.
Can the MAX4632EPE operate from a single +24V supply, and how does that affect performance?
Yes, the MAX4632EPE operates from a single +24V supply (V− tied to GND), within its +9V to +36V specification. On-resistance increases slightly versus ±15V operation (e.g., ~125Ω max at +25°C), and fault protection remains at ±25V relative to GND. Logic thresholds scale with V+, maintaining TTL/CMOS compatibility. These behaviors are confirmed in the Single-Supply Electrical Characteristics tables.
MAX4632EPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 3Ohm
- Voltage - Supply, Single (V+):
- 9V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 18pF, 18pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -66dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX4632EPE FAQ
1.How can I place an order for MAX4632EPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4632EPE 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 MAX4632EPE reliable?
The price and inventory of MAX4632EPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4632EPE is usually 5 days.
3.What payment methods are accepted for MAX4632EPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4632EPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4632EPE?
MAX4632EPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4632EPE 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 MAX4632EPE?
For technical support, including MAX4632EPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4632EPE requirements.
6.How does Aetrix verify that MAX4632EPE is sourced from the original manufacturer or authorized distributors?
All MAX4632EPE 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 MAX4632EPE meets industry standards.
7.What is the process for return or replacement of MAX4632EPE?
All MAX4632EPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4632EPE, 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 MAX4632EPE part is unused and in its original packaging.
Return procedure for MAX4632EPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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