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Analog Devices Inc./Maxim Integrated MAX4632CSE
- Part No.:
- MAX4632CSE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4632CSE.pdf
- Description:
- IC SWITCH SPDT X 2 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,230
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Product details
Overview
MAX4632CSE 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 on NO_/NC_ pins with ±15V supplies, and TTL/CMOS-compatible logic inputs. It serves in industrial data acquisition systems where overvoltage transients threaten downstream circuitry.
For engineers reviewing the MAX4632CSE datasheet, MAX4632CSE pinout, MAX4632CSE application, or MAX4632CSE equivalent, this page delivers verified specifications, fault-protection behavior under power-up/power-down, dual- and single-supply operating ranges (+9V to +36V or ±4.5V to ±18V), and real-world design implications for ATE and redundant control systems.
Technical Context
The MAX4632CSE implements a parallel N-channel/P-channel MOSFET switch architecture with integrated voltage-sensing comparators on each NO_/NC_ terminal. During normal operation (signals within V+ to V−), it delivers bidirectional conduction with matched on-resistance ≤6Ω between channels. When input exceeds supply rails by ~50mV, internal sensing forces the switch open and clamps COM_ to the appropriate supply rail via dedicated clamp FETs (N2/P2).
Fault response is asymmetric: transient overvoltage causes sub-10ns output clamping, but recovery after fault removal takes ~2.5µs due to COM_ node RC time constant. The device requires no power-supply sequencing and remains fully off with zero supply voltage-critical for hot-swap and power-cycle robustness in avionics and process control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 85Ω at +25°C, ±15V supplies - ensures minimal signal attenuation in precision sensor multiplexing |
| Fault Protection Range | ±25V on NO_/NC_ with ±15V supplies - protects against common-mode surges in industrial I/O modules |
| Supply Range | ±4.5V to ±18V dual or +9V to +36V single - supports legacy ±15V systems and modern high-voltage industrial rails |
| Off-Leakage Current | 0.5nA at +25°C - preserves accuracy in high-impedance measurement paths (e.g., thermocouple front-ends) |
| Logic Thresholds | +0.8V low / +2.4V high - guarantees reliable switching with both TTL and CMOS drivers at ±15V or +12V supply |
| Turn-On/Off Time | 150ns / 400ns (typ) at ±15V - enables fast channel switching in automated test equipment without timing bottlenecks |
| Charge Injection | 5pC (max) - limits voltage glitch on high-impedance nodes during switching, critical for sample-and-hold stability |
Pinout & Package
MAX4632CSE uses a 16-pin narrow SOIC package (body width 3.9mm). Pin functions are validated per Maxim's official pin configuration diagram (Rev 0, 7/99).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Analog common terminals - bidirectional signal path; must be routed with controlled impedance in high-frequency applications |
| 2, 7, 12 | N.C. | No internal connection - leave unconnected; no thermal or EMI benefit from grounding |
| 3, 6 | NC3, NC4 | Normally closed analog terminals - fault-protected; connect to backup or reference signals in redundant systems |
| 4, 5 | NO3, NO4 | Normally open analog terminals - fault-protected; primary signal routing path with rail-to-rail capability |
| 9, 16 | NO1, NO2 | Normally open analog terminals - identical function to pins 4/5; dual independent SPDT channels |
| 10, 15 | IN1, IN2 | Digital control inputs - drive with 0/+5V or 0/+12V logic; no pull-up/pull-down required due to defined thresholds |
| 11 | V+ | Positive supply input - must be decoupled locally (0.1µF ceramic + 1µF tantalum) to suppress switching noise |
| 13 | GND | Ground reference - separate analog/digital ground planes not required; single-point GND suffices |
| 14 | V− | Negative supply input - connects to −15V in bipolar systems; ties to GND in single-supply +12V configurations |
Key Features
| Feature | Design Value |
|---|---|
| Fault protection on NO_/NC_ pins | ±25V tolerance with ±15V supplies - eliminates need for external TVS diodes in 24V industrial PLC I/O modules |
| Rail-to-rail signal handling | Full conduction from V− to V+ - enables direct interfacing with op-amp outputs and DACs without level-shifting |
| No power-supply sequencing required | V+ and V− may power up/down in any order - prevents latch-up or undefined states during system reset sequences |
| All switches off with power off | Zero current flow through COM_/NO_/NC_ at V+ = V− = 0V - ensures safe hot-plug insertion in modular instrumentation racks |
| Break-before-make timing | 5ns minimum delay (typ) - prevents momentary shorting between NC and NO paths in critical signal routing |
| Low power consumption | <6mW at ±15V - reduces thermal load in densely packed ATE backplanes and portable test gear |
Applications
| Industrial Data Acquisition | Avionics Signal Routing |
|---|---|
Use Scenario: Multiplexing multiple RTD or thermocouple inputs into a single high-resolution ADC in a programmable logic controller. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing isolated, fault-protected channel selection with rail-to-rail support for ±10V sensor outputs. Use Value: Eliminates external protection components while maintaining <0.01% gain error across temperature due to 6Ω on-resistance matching. |
Use Scenario: Redundant flight control signal routing where primary and backup sensor feeds must be isolated during fault conditions. IC Role / Device Role / Timing Role: Fault-protected switch ensuring COM_ output remains clamped to safe rail voltage if NC_/NO_ inputs experience lightning-induced transients. Use Value: Prevents erroneous actuator commands during ±25V surges, meeting DO-160 Section 22 Category A immunity requirements. |
| ATE Equipment Channel Selection | Redundant Backup Systems |
Use Scenario: High-speed digital pattern generator selecting between calibration standards and DUT connections in semiconductor test handlers. IC Role / Device Role / Timing Role: Low-charge-injection (5pC) SPDT switch enabling precise DC offset correction without post-switch settling delays. Use Value: Achieves sub-16-bit accuracy in automated calibration sequences with 150ns turn-on time and no external buffering. |
Use Scenario: Hot-swappable power module monitoring where main and backup voltage sensors feed into shared monitoring circuitry. IC Role / Device Role / Timing Role: Dual SPDT switch isolating failed sensor paths while maintaining continuity on healthy channels during field replacement. Use Value: Enables seamless failover with no interruption to system supervision, leveraging all-switches-off behavior at zero supply voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG408BRUZ | 8-channel single-pole/single-throw (SPST); no fault protection; 45Ω on-resistance; ±15V supply only | Suitable for non-harsh environments where overvoltage risk is mitigated externally | Select when channel count >2 is needed and fault events are managed at board level |
| TS5A3157DCKR | Single SPDT; 3.3V–5.5V single supply only; 0.9Ω on-resistance; no fault protection; 300mA continuous current | Targeted at low-voltage portable electronics, not industrial/high-voltage use cases | Choose only for battery-powered instrumentation with strict low-RON requirements and no surge exposure |
Compared with MAX4632CSE, ADG408BRUZ offers higher channel density but lacks fault resilience, while TS5A3157DCKR delivers ultra-low RON at the cost of voltage range and protection-making MAX4632CSE the sole choice for ±25V fault-tolerant dual SPDT operation in industrial control.
Availability
MAX4632CSE is available at Aetrix Electronics and suitable for industrial process control systems, avionics signal routing, and automated test equipment requiring stable component supply across extended temperature ranges (−40°C to +85°C) and long production lifecycles.
Supply support for MAX4632CSE 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 demanding industrial, automotive, and communications applications.
The MAX463x family was engineered specifically for high-reliability signal routing in harsh environments-delivering fault protection, rail-to-rail operation, and pin compatibility with legacy DG-series switches without sacrificing performance.
FAQ
What is the maximum fault voltage the MAX4632CSE can withstand on its NO_/NC_ pins?
The MAX4632CSE withstands ±25V on NO_/NC_ pins when powered with ±15V supplies, and ±40V when completely unpowered. Exceeding these limits-even briefly-risks permanent damage. This rating is specific to MAX4632CSE; MAX4631/MAX4633 variants support ±36V under same conditions. Always verify actual system fault profiles against these absolute maximums before deployment.
Does the MAX4632CSE require external pull-up or pull-down resistors on its IN1/IN2 control pins?
No. The MAX4632CSE features internally defined logic thresholds (+0.8V low, +2.4V high) compatible with TTL and CMOS drivers across its full supply range. External resistors are unnecessary and may degrade noise immunity. Drive IN1/IN2 directly from microcontroller GPIO or FPGA outputs operating at 0/+5V or 0/+12V levels.
Can the MAX4632CSE operate from a single +24V supply?
Yes. The MAX4632CSE supports single-supply operation from +9V to +36V, with V− tied to GND. At +24V, on-resistance remains ≤100Ω (typ), off-leakage stays below 5nA at +85°C, and logic thresholds shift only marginally (+2.6V high, +0.9V low)-fully preserving compatibility with standard 3.3V or 5V control logic.
How does the MAX4632CSE behave during power-up sequences where V+ and V− ramp at different rates?
The MAX4632CSE requires no power-supply sequencing: V+ and V− may rise independently or even out-of-order. All switches remain safely off until both supplies reach functional thresholds (~±3V), and fault protection activates immediately upon either supply reaching operational voltage. This eliminates startup glitches in systems with asymmetric power domains.
Is the MAX4632CSE pin-compatible with the DG403, and can it be used as a drop-in replacement?
Yes-the MAX4632CSE shares identical pinout and footprint with DG403, including COM/NO/NC/IN/V+/V− assignments. However, only NO_/NC_ pins are fault-protected; COM_ and IN_ are not. As a result, existing PCBs benefit from enhanced ruggedness without layout changes, but system-level fault analysis must confirm COM_ node exposure remains within safe limits.
MAX4632CSE 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4632CSE FAQ
1.How can I place an order for MAX4632CSE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4632CSE 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 MAX4632CSE reliable?
The price and inventory of MAX4632CSE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4632CSE is usually 5 days.
3.What payment methods are accepted for MAX4632CSE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4632CSE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4632CSE?
MAX4632CSE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4632CSE 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 MAX4632CSE?
For technical support, including MAX4632CSE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4632CSE requirements.
6.How does Aetrix verify that MAX4632CSE is sourced from the original manufacturer or authorized distributors?
All MAX4632CSE 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 MAX4632CSE meets industry standards.
7.What is the process for return or replacement of MAX4632CSE?
All MAX4632CSE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4632CSE, 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 MAX4632CSE part is unused and in its original packaging.
Return procedure for MAX4632CSE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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