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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:
Inventory:2,418
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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 rail-to-rail signal handling, features 85Ω max on-resistance at +25°C, and provides ±36V fault protection on NO/NC terminals with power applied-enabling robust signal routing in industrial data acquisition systems.
For engineers reviewing the MAX4633ESE datasheet, MAX4633ESE pinout, MAX4633ESE application, or MAX4633ESE equivalent, this device is selected for high-reliability analog switching where overvoltage transients, wide supply flexibility, and bidirectional rail-to-rail signal integrity are critical-especially in ATE equipment and redundant backup systems requiring guaranteed fault isolation and sub-10nA off-leakage.
Technical Context
The MAX4633ESE employs a parallel N-channel/P-channel MOSFET architecture with integrated voltage-sensing comparators on each NO/NC terminal. During normal operation, it achieves low on-resistance (≤85Ω) and matched channel resistance (≤6Ω), while maintaining bidirectional conduction between COM and NO/NC pins within the supply rails.
Under fault conditions-when NO or NC exceeds V+ or V− by ~50mV-the internal sense circuitry forces the switch open and clamps COM to the appropriate supply rail via dedicated clamp FETs (N2/P2), delivering up to ±18mA of clamped output current without glitching. Fault protection extends to ±36V with ±15V supplies and ±40V with power off.
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 supply or +9V to +36V single supply-supports asymmetric rails and eliminates sequencing requirements |
| On-Resistance (max) | 85Ω at +25°C-ensures minimal signal attenuation and thermal drift in precision analog paths |
| Fault Protection | ±36V on NO/NC with ±15V supplies; ±40V with power off-prevents latch-up and damage during power-up/down or transient overvoltage |
| Off-Leakage Current (max) | 0.5nA at +25°C-preserves signal integrity in high-impedance sensor interfaces and sample-hold circuits |
| Logic Compatibility | TTL/CMOS inputs with fixed 0.8V/2.4V thresholds-operates reliably across +9V to +15V or ±15V supplies without level-shifting |
| Turn-On/Off Time | 100ns/50ns typical at ±15V-enables fast multiplexing in automated test equipment and real-time control loops |
Pinout & Package
MAX4633ESE is housed in a 16-pin narrow SO (Small Outline) package with exposed pad (JEDEC MS-012AA), rated for -55°C to +125°C operation. Pin 1 is top-left corner (notch/dot side), with pins numbered counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common terminals for both DPST switches-bidirectional signal path; must remain within V− to V+ during normal operation |
| 2, 7, 12 | N.C. | No internal connection-leave unconnected; no routing or grounding required |
| 3, 6 | NO1, NO2 | Normally open switch terminals-fault-protected up to ±36V; connect to signal sources requiring overvoltage resilience |
| 4, 5 | NO3, NO4 | Second set of normally open terminals-forms second pole of each DPST switch; electrically isolated from first pole |
| 9, 16 | NO1, NO2 | Duplicate NO pins per datasheet pinout-identical function to pins 3 and 6; used for layout flexibility and current sharing |
| 10, 15 | IN1, IN2 | Digital control inputs-drive high (≥2.4V) to close corresponding DPST switch; CMOS/TTL compatible |
| 11 | V+ | Positive supply input-must be ≥+9V (single) or ≥±4.5V (dual); powers logic and clamp circuitry |
| 13 | GND | Ground reference for logic and internal translators-separate from analog signal ground; ESD diodes to V+/V− |
| 14 | V− | Negative supply input-required for dual-supply operation; sets lower rail and enables rail-to-rail analog swing |
Key Features
| Feature | Design Value |
|---|---|
| Fault-protected NO/NC terminals | Withstands ±36V faults under ±15V bias and ±40V with power off-eliminates need for external TVS or series resistors in harsh environments |
| Rail-to-rail signal handling | Passes signals from V− to V+ without clipping or distortion-enables full dynamic range utilization in ±12V or +24V industrial I/O stages |
| Matched on-resistance | ≤6Ω max mismatch between channels-critical for differential signal integrity and gain-matching in instrumentation amplifier front-ends |
| No power-supply sequencing | Operates safely with any supply ramp order-simplifies power management in multi-rail embedded controllers and PLC modules |
| Sub-nanoampere off-leakage | 0.5nA max at +25°C-preserves charge in high-impedance sample-and-hold capacitors and piezoelectric sensor nodes |
| Pin-compatible upgrade | Direct replacement for DG401/DG403/DG405-enables drop-in reliability enhancement in legacy ATE and avionics designs |
Applications
| ATE Equipment | Data Acquisition |
|---|---|
Use Scenario: Automated test systems switching multiple DUT signal lines under varying voltage conditions, including hot-plug and transient events. IC Role / Device Role / Timing Role: Dual DPST analog switch providing isolated, fault-tolerant signal routing between test instruments and device-under-test channels. Use Value: ±36V fault protection prevents system shutdown during unexpected overvoltage events, while 85Ω on-resistance ensures <0.1% gain error in 12-bit ADC front-ends. |
Use Scenario: Industrial sensor hubs aggregating thermocouple, RTD, and strain gauge signals across wide temperature ranges and supply voltages. IC Role / Device Role / Timing Role: High-voltage analog multiplexer enabling shared ADC resources across multiple sensor types with rail-to-rail input capability. Use Value: Bidirectional rail-to-rail conduction supports both positive and negative sensor outputs (e.g., ±10V industrial standards), and 0.5nA leakage avoids drift in µV-level measurements. |
| Redundant/Backup Systems | Avionics Signal Routing |
Use Scenario: Flight-critical systems requiring seamless failover between primary and backup sensor or actuator channels without signal interruption. IC Role / Device Role / Timing Role: Fault-isolated DPST switch enabling cross-strapped redundancy paths with automatic open-circuit response during fault detection. Use Value: Fault-induced open-circuit behavior and nanoampere leakage ensure no unintended loading or coupling between active and standby channels during transition. |
Use Scenario: Aircraft environmental monitoring units routing ARINC 429, discrete status, and analog sensor signals in high-EMI cabin environments. IC Role / Device Role / Timing Role: Robust analog switch protecting downstream signal conditioning from induced transients on long harness runs. Use Value: ±40V power-off fault tolerance safeguards against static discharge during maintenance, and 100ns turn-on time meets MIL-STD-704 voltage sag recovery timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4632ESE | SPDT configuration (NO/NC per channel) vs. MAX4633ESE's DPST; ±25V fault rating (vs. ±36V); same package and pinout | Supports break-before-make switching and signal inversion; less suitable for isolated dual-path routing | Select when SPDT topology and lower fault margin are acceptable-and NC functionality is required for signal polarity control |
| ADG5412BRUZ | Quad SPST, ±40V fault protected, 12Ω typical RON; requires separate logic-level translation for TTL compatibility | Higher channel count but no DPST pairing; lacks integrated 0.8V/2.4V logic thresholds | Select when lower on-resistance and higher fault margin are prioritized over pin compatibility and plug-and-play logic interface |
Compared with MAX4632ESE and ADG5412BRUZ, the MAX4633ESE uniquely delivers DPST isolation with ±36V fault tolerance and native TTL/CMOS logic compatibility-making it optimal for space-constrained redundant signal paths where dual-pole coordination and zero-layout-change upgrades are essential.
Availability
MAX4633ESE is available at Aetrix Electronics and suitable for ATE equipment, industrial data acquisition, and redundant/backup systems requiring stable component supply, extended temperature support (-55°C to +125°C), and long-term obsolescence mitigation.
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 power management ICs for demanding industrial, automotive, and communications applications.
The MAX463x family was engineered specifically for high-reliability analog signal routing in environments prone to power sequencing errors, supply transients, and overvoltage faults-targeting ATE, avionics, and process control systems.
FAQ
What is the maximum fault voltage the MAX4633ESE can withstand on its NO/NC pins?
The MAX4633ESE supports ±36V fault protection on NO/NC terminals when powered with ±15V supplies, and ±40V with all supplies at 0V. Exceeding these limits-even briefly-may cause permanent damage. The MAX4633ESE fault-protection circuitry actively clamps COM to the appropriate supply rail during overvoltage events, limiting output current to ±18mA without glitching.
Does the MAX4633ESE require power-supply sequencing during startup?
No, the MAX4633ESE does not require power-supply sequencing. Its internal architecture allows safe operation regardless of V+, V−, or GND ramp order. This eliminates complex power-management design in multi-rail systems and prevents latch-up during brown-out conditions-making the MAX4633ESE ideal for industrial PLCs and avionics modules with independent supply domains.
Can the MAX4633ESE be used with a single +24V supply?
Yes, the MAX4633ESE operates from a single +9V to +36V supply with V− tied to GND. At +24V, it maintains 85Ω max on-resistance, ±36V fault tolerance (relative to GND), and full TTL/CMOS logic compatibility. The MAX4633ESE's rail-to-rail signal handling preserves full 0–24V analog range, supporting industrial 24V sensor and actuator interfaces without level-shifting.
How does the MAX4633ESE differ from the MAX4631ESE and MAX4632ESE?
The MAX4633ESE implements two DPST switches (four NO terminals, two COMs), whereas MAX4631ESE offers two SPST switches and MAX4632ESE provides two SPDT switches. All share identical pinout, ±36V fault rating (except MAX4632ESE at ±25V), and rail-to-rail operation-but only the MAX4633ESE enables true isolated dual-pole switching for redundant signal paths without cross-talk.
Is the MAX4633ESE pin-compatible with industry-standard DG-series switches?
Yes, the MAX4633ESE has identical pinout and footprint to DG401, DG403, and DG405-enabling direct PCB replacement. However, only the NO/NC pins are fault-protected; COM, IN, V+, V−, and GND retain standard CMOS switch behavior. Designers must verify that system-level fault exposure is limited to NO/NC nodes to fully leverage the MAX4633ESE's protection features.
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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