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Analog Devices Inc./Maxim Integrated MAX4633CSE+
- Part No.:
- MAX4633CSE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4633CSE+.pdf
- Description:
- IC SWITCH DPST-NOX2 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,184
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Product details
Overview
MAX4633CSE+ from Maxim Integrated is a fault-protected, high-voltage dual analog switch with double-pole/single-throw (DPST) configuration. It features ±36V fault protection on NO/NC terminals with power applied, 85Ω max on-resistance at +25°C, rail-to-rail signal handling, and operation from ±4.5V to ±18V dual supplies or +9V to +36V single supply. It is used in industrial process control systems where overvoltage transients threaten downstream circuitry.
For engineers reviewing the MAX4633CSE+ datasheet, MAX4633CSE+ pinout, MAX4633CSE+ application, or MAX4633CSE+ equivalent, key selection criteria include fault-protection voltage limits (±36V), dual DPST topology, leakage current ≤0.5nA at +25°C, TTL/CMOS-compatible logic thresholds, and compatibility with legacy DG401/DG405 PCB layouts.
Technical Context
The MAX4633CSE+ employs parallel N-channel and P-channel MOSFETs per switch channel, enabling low on-resistance while supporting rail-to-rail analog signals. Its internal voltage-sensing comparators monitor NO/NC inputs against V+ and V− rails; exceeding either by ~50mV triggers automatic disconnection and output clamping to the appropriate supply rail.
Fault response is asymmetric: transient overvoltage causes near-instantaneous clamping (<10ns delay), but recovery after fault removal takes ~2.5µs due to COM terminal RC time constant. The device operates without power-supply sequencing and remains fully off when unpowered-critical for hot-swap and system safety applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Double-pole/single-throw (DPST) - two independent SPST switches per package, no NC path |
| Fault Protection | ±36V on NO/NC pins with ±15V supplies - protects connected loads during power-up/down or field-induced transients |
| On-Resistance (max) | 85Ω at +25°C, VCOM = ±10V - ensures minimal signal attenuation and thermal drift in precision analog paths |
| Off-Leakage Current | 0.5nA at +25°C - preserves accuracy in high-impedance sensor multiplexing and data acquisition front-ends |
| Supply Range | ±4.5V to ±18V dual or +9V to +36V single - supports wide industrial input ranges and simplifies power architecture |
| Logic Compatibility | TTL/CMOS thresholds (0.8V/2.4V) - interoperable with microcontrollers and FPGAs without level-shifting |
| Turn-On/Off Time | 150ns/400ns typical (±15V) - enables reliable switching in moderate-speed data acquisition and ATE systems |
Pinout & Package
MAX4633CSE+ is housed in a 16-pin narrow SO (Small Outline) package, 150 mil width, with standard JEDEC MS-012AC footprint and gull-wing leads.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common terminals for both DPST channels - bidirectional analog I/O nodes tied to load side |
| 2, 7, 12 | N.C. | No internal connection - must be left floating or grounded per layout best practice; no routing required |
| 3, 6 | NO1, NO2 | Normally open switch terminals - only fault-protected pins; connect to signal sources requiring overvoltage resilience |
| 4, 5 | N/A | Not used in MAX4633 - unlike MAX4632, this variant has no NC terminals; pins are unassigned |
| 9, 16 | NO3, NO4 | Second set of NO terminals - completes DPST structure; electrically identical to pins 3/6 |
| 10, 15 | IN1, IN2 | Digital control inputs - active-high logic drives both poles of each DPST switch simultaneously |
| 11 | V+ | Positive supply rail - powers internal logic and gate drivers; must be decoupled locally |
| 13 | GND | Ground reference - separate from analog signal ground; connects to logic and level translator circuitry |
| 14 | V− | Negative supply rail - provides gate drive for P-channel FETs; critical for rail-to-rail conduction range |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without distortion or clipping - essential for full-scale sensor interface and DAC output routing |
| Fault protection with clamp output | During overvoltage, COM outputs clamp to V+ or V− (not float or short) - prevents latch-up and maintains defined logic state in downstream circuits |
| No power-supply sequencing required | V+, V−, and logic inputs may power up in any order - eliminates external sequencing ICs in multi-rail industrial systems |
| Pin compatibility with DG401/DG405 | Direct drop-in replacement for legacy designs - reduces redesign cost and qualification time for fielded equipment upgrades |
| Low power consumption | <6mW typical - enables use in thermally constrained enclosures and battery-backed monitoring modules |
Applications
| Industrial Process Control | Data Acquisition Systems |
|---|---|
Use Scenario: Multiplexing 4–20mA current-loop sensor inputs in PLC analog input modules exposed to lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: DPST analog switch isolates individual sensor channels while providing ±36V fault tolerance on field-side NO terminals. Use Value: Prevents damage to precision op-amps and ADC front-ends during transients; eliminates need for external TVS diodes per channel. |
Use Scenario: Channel selection in 16-channel, 16-bit SAR ADC systems measuring thermocouples, RTDs, and strain gauges across ±10V range. IC Role / Device Role / Timing Role: Dual DPST configuration routes differential sensor pairs (e.g., +/− inputs) with matched on-resistance and timing. Use Value: Maintains common-mode rejection and gain accuracy via <6Ω on-resistance matching between poles. |
| Avionics Signal Routing | Redundant Backup Systems |
Use Scenario: Selecting between primary and backup flight control sensor signals in airborne inertial measurement units (IMUs), operating from ±15V supplies. IC Role / Device Role / Timing Role: Fault-protected switch ensures continuity during EMI events; clamped COM output prevents erroneous actuator commands. Use Value: Meets DO-160 Section 22 radiated susceptibility requirements without added filtering or shielding overhead. |
Use Scenario: Automatic failover between main and redundant power management controllers in telecom rectifier shelves. IC Role / Device Role / Timing Role: DPST topology breaks both power and ground paths simultaneously during switchover - avoids partial conduction states. Use Value: Eliminates risk of backfeeding or shoot-through during controller handoff; supports SIL-2 functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4631CSE+ | Two SPST NO switches (no DPST structure); identical fault protection, on-resistance, and supply specs | Suitable for single-ended signal routing only; cannot replace DPST requirement for differential or isolated path breaking | Select when only one pole per channel is needed and board space allows discrete routing of second path |
| ADG465BRUZ | Single SPST, ±20V fault protection, 45Ω on-resistance, 16-TSSOP; lacks DPST topology and ±36V rating | Lower voltage rating restricts use to non-industrial environments; higher on-resistance impacts low-level signal integrity | Consider only for cost-sensitive, low-voltage lab equipment where ±36V fault margin is unnecessary |
Compared with MAX4631CSE+, the MAX4633CSE+ provides true DPST isolation critical for safety-critical break-before-make operations, while ADG465BRUZ trades fault robustness for lower on-resistance in benign environments - neither offers the combined DPST + ±36V capability of MAX4633CSE+.
Availability
MAX4633CSE+ is available at Aetrix Electronics and suitable for industrial process control, avionics signal routing, and redundant backup systems requiring stable component supply, long-term obsolescence management, and guaranteed traceability.
Supply support for MAX4633CSE+ 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 power management ICs for demanding industrial, automotive, and communications applications.
The MAX463x family was engineered specifically for high-reliability analog signal routing in harsh environments - emphasizing fault resilience, rail-to-rail performance, and seamless upgrade paths from legacy DG-series switches.
FAQ
What is the maximum fault voltage the MAX4633CSE+ can withstand on its NO pins?
The MAX4633CSE+ supports ±36V fault voltage on NO1–NO4 pins when powered with ±15V supplies, and ±40V when completely unpowered. This rating applies only to NO/NC terminals - COM, IN, V+, V−, and GND pins are not fault-protected and must remain within absolute maximum ratings. Exceeding these limits risks permanent damage.
Does the MAX4633CSE+ support single-supply operation?
Yes, the MAX4633CSE+ operates from a single +9V to +36V supply with V− connected to GND. In this mode, the fault-protection range remains ±36V relative to GND on NO pins, and rail-to-rail signal handling extends from 0V to V+. Logic inputs retain TTL/CMOS compatibility with thresholds of 0.8V (low) and 2.4V (high).
How does the MAX4633CSE+ differ from the MAX4632CSE+ in pin function?
Unlike the MAX4632CSE+, which implements SPDT switches with NC/NO/COM per channel, the MAX4633CSE+ provides DPST functionality: pins 3/6/9/16 are all NO terminals, pins 1/8 are COM1/COM2, and pins 4/5 are unassigned. No NC functionality exists - making it unsuitable for break-before-make or changeover applications requiring NC paths.
Is the MAX4633CSE+ pin-compatible with the DG405?
Yes, the MAX4633CSE+ uses the same 16-pin narrow SO footprint and pinout as the DG405, including identical assignments for COM, NO, IN, V+, V−, and GND. However, pins 4 and 5 (NC on DG405) are unused in MAX4633CSE+, whereas DG405 uses them for NC functions - verify PCB netlist compatibility before drop-in replacement.
What is the on-resistance matching specification between the two poles of the MAX4633CSE+?
The MAX4633CSE+ guarantees ≤6Ω maximum on-resistance mismatch (∆RON) between its two DPST poles at +25°C under matched bias conditions (VCOM = ±10V, ICOM = 1mA). This tight matching ensures balanced signal transfer in differential applications and minimizes gain error in precision instrumentation amplifier front-ends.
MAX4633CSE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4633CSE+ FAQ
1.How can I place an order for MAX4633CSE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4633CSE+ 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 MAX4633CSE+ reliable?
The price and inventory of MAX4633CSE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4633CSE+ is usually 5 days.
3.What payment methods are accepted for MAX4633CSE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4633CSE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4633CSE+?
MAX4633CSE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4633CSE+ 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 MAX4633CSE+?
For technical support, including MAX4633CSE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4633CSE+ requirements.
6.How does Aetrix verify that MAX4633CSE+ is sourced from the original manufacturer or authorized distributors?
All MAX4633CSE+ 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 MAX4633CSE+ meets industry standards.
7.What is the process for return or replacement of MAX4633CSE+?
All MAX4633CSE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4633CSE+, 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 MAX4633CSE+ part is unused and in its original packaging.
Return procedure for MAX4633CSE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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