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Analog Devices Inc./Maxim Integrated MAX4633ESE+
- Part No.:
- MAX4633ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4633ESE+.pdf
- Description:
- IC SWITCH DPST-NOX2 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
The MAX4633ESE+ from Maxim Integrated is a fault-protected, high-voltage dual analog switch configured as two independent double-pole/single-throw (DPST) switches. It operates from ±4.5V to ±18V dual supplies or +9V to +36V single supply, delivers ≤85Ω on-resistance at +25°C, supports rail-to-rail signal handling up to ±36V (power-on), and features <0.5nA off-leakage at +25°C. It is used in industrial process control systems where overvoltage transients on sensor inputs must be contained without disrupting downstream circuitry.
For engineers reviewing the MAX4633ESE+ datasheet, MAX4633ESE+ pinout, MAX4633ESE+ application, or MAX4633ESE+ equivalent, this page provides verified technical context, exact pin-level circuit roles, confirmed fault-protection thresholds, real-world application constraints, and validated alternative parts for high-voltage analog switching in ATE and avionics environments.
Technical Context
The MAX4633ESE+ employs parallel N-channel and P-channel MOSFETs per switch path with integrated voltage-sensing comparators that monitor NO/NC terminals against V+ and V− rails. When input exceeds either rail by ~50mV, the switch disconnects and clamps COM output to the appropriate supply rail via dedicated clamp FETs (N2/P2), enabling robust fault recovery without latch-up.
It supports bidirectional signal flow between COM and NO/NC pins during normal operation, requires no power-supply sequencing, and maintains all switches in OFF state when unpowered. Its logic inputs accept TTL/CMOS levels across full supply range (+9V to +36V or ±4.5V to ±18V), with guaranteed 0.8V/2.4V thresholds at ±15V or +12V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Two independent DPST (double-pole/single-throw) analog switches |
| Supply Range | ±4.5V to ±18V dual or +9V to +36V single - enables flexible biasing in industrial and avionics power architectures |
| On-Resistance (max) | 85Ω at +25°C - ensures minimal signal attenuation and thermal drift in precision measurement paths |
| Fault Protection | ±36V on NO/NC pins with ±15V supplies - protects downstream ADCs and amplifiers from transient overvoltages |
| Off-Leakage Current | 0.5nA at +25°C - preserves accuracy in high-impedance sensor multiplexing applications |
| Logic Compatibility | TTL/CMOS inputs with 0.8V/2.4V thresholds - eliminates level-shifter requirements in mixed-voltage systems |
| Turn-On/Off Time | 150ns/400ns typical (±15V) - supports fast channel switching in automated test equipment |
Pinout & Package
MAX4633ESE+ is housed in a 16-pin narrow SO (Small Outline) package with exposed pad (RoHS-compliant). Pin mapping is identical to industry-standard DG401/DG403/DG405, enabling drop-in replacement in legacy layouts where only NO/NC pins require fault protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common analog terminals for both poles of Switch 1 and Switch 2 - bidirectional signal path with rail-to-rail capability |
| 2, 7, 12 | N.C. | No internal connection - must remain unconnected; not usable as heatsink or ground tie |
| 3, 6 | NO1, NO2 | Normally open analog terminals for pole 1 and pole 2 - fault-protected up to ±36V with ±15V supplies |
| 4, 5 | NO3, NO4 | Normally open analog terminals for second pole of each DPST switch - electrically isolated but co-switched with Pins 3/6 |
| 9, 16 | NO1, NO2 | Duplicate NO terminals (pin-compatible with DG40x) - same signal as Pins 3/6; must be tied together externally if used |
| 10, 15 | IN1, IN2 | Digital control inputs for Switch 1 and Switch 2 - CMOS/TTL compatible; drive internal gate translators |
| 11 | V+ | Positive supply input - powers internal logic and P-channel gate drivers; range +9V to +36V (single) or ±4.5V to ±18V (dual) |
| 13 | GND | Ground reference for logic circuitry - separate from analog signal path; ESD diodes to V+/V− |
| 14 | V− | Negative supply input - powers N-channel gate drivers; required for dual-supply operation or omitted (tied to GND) for single-supply mode |
Key Features
| Feature | Design Value |
|---|---|
| Fault protection on NO/NC pins | ±36V tolerance with ±15V supplies - prevents damage during sensor hot-plug or power-rail collapse events |
| Rail-to-rail signal handling | Full V− to V+ analog range passed without clipping - preserves DC accuracy and dynamic range in data acquisition front-ends |
| No power-supply sequencing required | V+, V−, and logic inputs may power up in any order - eliminates need for external sequencers in multi-rail systems |
| Output clamping during fault | COM terminal actively clamped to V+ or V− - avoids undefined output states that could trigger false alarms in safety-critical monitoring |
| Low on-resistance match | ≤6Ω max mismatch between channels - ensures matched gain/attenuation in differential or dual-path signal routing |
Applications
| Industrial Process Control | Avionics Sensor Multiplexing |
|---|---|
Use Scenario: Multiplexing 4–20mA current-loop sensors and thermocouple inputs into a shared ADC channel under harsh EMI and transient conditions. IC Role / Device Role / Timing Role: Dual DPST switch isolating fault-prone field wiring from sensitive analog front-end; enables sequential sampling without cross-talk or rail violation. Use Value: ±36V fault tolerance prevents latch-up during lightning-induced surges; 0.5nA leakage avoids offset errors in µV-level thermocouple measurements. |
Use Scenario: Routing redundant air-data sensor outputs (pitot/static pressure) to flight control computers with fail-safe isolation. IC Role / Device Role / Timing Role: High-reliability analog switch providing automatic fault containment and rail-clamped output during sensor overvoltage events. Use Value: Break-before-make timing <500ns prevents momentary shorting between redundant channels; -62dB off-isolation suppresses crosstalk in safety-critical signal paths. |
| ATE Equipment | Redundant Backup Systems |
Use Scenario: Channel selection in semiconductor test handlers where DUTs may generate ±30V transients during power-up or failure. IC Role / Device Role / Timing Role: DPST switch enabling simultaneous connection of voltage and current measurement paths while blocking fault propagation. Use Value: 85Ω on-resistance ensures <0.1% gain error in 10kΩ load circuits; 150ns turn-on time supports >5MHz test pattern rates. |
Use Scenario: Automatic switchover between primary and backup power monitors in telecom rectifier systems with wide input voltage variation. IC Role / Device Role / Timing Role: Fault-aware analog switch detecting overvoltage on primary line and seamlessly transferring monitoring to backup path. Use Value: All-switches-off behavior at power loss guarantees no backfeed into failed supplies; ±40V fault rating covers worst-case surge events with power off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4632ESE+ | SPDT configuration (NO/NC per channel); ±25V fault protection with ±15V supplies | Requires rework for DPST functionality; lower fault margin limits use in 36V industrial buses | Select only if SPDT topology matches existing layout and ±25V fault headroom suffices |
| ADG465BRUZ | Single SPST switch; ±20V fault rating; 44Ω on-resistance; 16-TSSOP package | Not pin-compatible; requires doubling count and PCB redesign; lacks DPST integration | Consider only for new designs prioritizing lower on-resistance over fault margin and integration density |
Compared with MAX4632ESE+, the MAX4633ESE+ provides higher fault tolerance (±36V vs. ±25V) and native DPST topology, eliminating interconnect complexity. Against ADG465BRUZ, it offers integrated dual-pole switching and superior transient resilience-critical for legacy system upgrades and safety-critical redundancy.
Availability
MAX4633ESE+ is available at Aetrix Electronics and suitable for industrial process control, avionics sensor multiplexing, and ATE equipment requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX4633ESE+ 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, mixed-signal, and high-reliability ICs for demanding industrial, automotive, and aerospace applications.
The MAX463x family was engineered specifically for high-voltage analog signal routing in fault-prone environments, combining rail-to-rail performance, integrated fault protection, and pin compatibility with legacy switches to simplify system hardening.
FAQ
What is the maximum fault voltage the MAX4633ESE+ can withstand on its NO/NC pins?
The MAX4633ESE+ withstands ±36V on NO/NC pins when powered with ±15V supplies, and ±40V when fully unpowered. Exceeding these limits-even briefly-may cause permanent damage. This rating applies only to NO and NC terminals; COM and IN pins are not fault-protected and must remain within V− to V+.
Does the MAX4633ESE+ support single-supply operation, and what is the minimum voltage?
Yes, the MAX4633ESE+ supports true single-supply operation from +9V to +36V, with V− tied to GND. At +9V, it maintains full functionality including TTL/CMOS logic compatibility and ≤85Ω on-resistance. Below +9V, parameters such as on-resistance and fault threshold degrade outside specification.
Is the MAX4633ESE+ pin-compatible with the DG401/DG403/DG405 series?
Yes, the MAX4633ESE+ uses identical pinout and footprint to DG401/DG403/DG405. However, only the NO and NC pins inherit fault protection; COM, IN, V+, V−, and GND retain standard behavior. Layout reuse is possible, but system-level fault analysis must confirm whether unprotected pins interface safely with existing circuitry.
What is the on-resistance match between the two DPST channels in the MAX4633ESE+?
The MAX4633ESE+ guarantees ≤6Ω maximum on-resistance mismatch (∆RON) between its two DPST switch channels at +25°C. This tight matching ensures balanced signal transfer in differential or dual-path configurations, critical for maintaining common-mode rejection in precision instrumentation front-ends.
Can the MAX4633ESE+ be used in bidirectional signal paths?
Yes, the MAX4633ESE+ supports fully bidirectional analog signal flow between COM and NO/NC terminals during normal operation (signal within V− to V+). This enables flexible routing in data acquisition systems where signal direction may vary dynamically, without requiring external polarity management circuitry.
MAX4633ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- DPST - NO
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4633ESE+ FAQ
1.How can I place an order for MAX4633ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4633ESE+ 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 MAX4633ESE+ reliable?
The price and inventory of MAX4633ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4633ESE+ is usually 5 days.
3.What payment methods are accepted for MAX4633ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4633ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4633ESE+?
MAX4633ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4633ESE+ 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 MAX4633ESE+?
For technical support, including MAX4633ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4633ESE+ requirements.
6.How does Aetrix verify that MAX4633ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX4633ESE+ 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 MAX4633ESE+ meets industry standards.
7.What is the process for return or replacement of MAX4633ESE+?
All MAX4633ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4633ESE+, 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 MAX4633ESE+ part is unused and in its original packaging.
Return procedure for MAX4633ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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