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Analog Devices Inc./Maxim Integrated MAX4632ESE+
- Part No.:
- MAX4632ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4632ESE+.pdf
- Description:
- IC SWITCH SPDT X 2 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:446
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Product details
Overview
MAX4632ESE+ 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 must not disrupt downstream circuitry.
For engineers reviewing the MAX4632ESE+ datasheet, MAX4632ESE+ pinout, MAX4632ESE+ application, or MAX4632ESE+ equivalent, key selection criteria include fault-protection voltage limits (±25V with power on), break-before-make timing (5–40 ns), off-isolation (−62 dB at 1 MHz), and compatibility with legacy DG403 layouts without redesigning signal paths.
Technical Context
The MAX4632ESE+ implements parallel N- and P-channel FETs per channel with dedicated voltage-sensing circuitry that detects input overvoltage >±50 mV beyond V+/V− rails. During fault conditions, it forces internal switches open and clamps COM outputs to the appropriate supply rail-ensuring unambiguous rail-to-rail output behavior before, during, and after faults.
It features two independent SPDT channels (NO1/NC1/COM1 and NO2/NC2/COM2), each with matched on-resistance (≤6 Ω max mismatch), <0.5 nA off-leakage at +25°C, and no power-supply sequencing requirement-enabling robust operation in hot-plug or undervoltage scenarios common in ATE and avionics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 85 Ω at +25°C - ensures minimal signal attenuation and thermal drift in precision analog routing |
| Fault Protection Range | ±25V with ±15V supplies - protects connected loads from transient overvoltages without latch-up or damage |
| Off-Leakage Current | 0.5 nA at +25°C - preserves signal integrity in high-impedance sensor multiplexing applications |
| Supply Range | ±4.5V to ±18V dual or +9V to +36V single - supports wide-range industrial and aerospace power architectures |
| Logic Thresholds | +0.8V low / +2.4V high - guarantees interoperability with both TTL and CMOS drivers across supply voltages |
| Break-Before-Make Delay | 5–40 ns - prevents momentary shorting between NC and NO paths during switching transitions |
| Off-Isolation | −62 dB at 1 MHz - suppresses crosstalk in multi-channel data acquisition front-ends |
Pinout & Package
MAX4632ESE+ is housed in a 16-pin narrow SO package (SOIC-N16), with exposed pad for thermal performance. Pin 1 is top-left corner (notch-down orientation). All pins are electrically defined per Maxim's official pinout diagram for MAX4632.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common analog terminals - bidirectional signal path shared between NC and NO per channel |
| 2, 7, 12 | N.C. | No internal connection - floating pins; must be left unconnected or tied to GND per layout best practice |
| 3, 6 | NC1, NC2 | Normally closed analog terminals - conduct to COM when IN = logic low |
| 4, 5 | NO1, NO2 | Normally open analog terminals - conduct to COM when IN = logic high; fault-protected |
| 9, 16 | NO1, NO2 | Duplicate NO pins - same electrical node as pins 4 and 5; used for layout flexibility and current sharing |
| 10, 15 | IN1, IN2 | Digital control inputs - drive internal gate translators; TTL/CMOS compatible |
| 11 | V+ | Positive supply rail - powers internal logic and P-channel FET gates |
| 13 | GND | Ground reference - return path for logic circuitry and ESD protection diodes |
| 14 | V− | Negative supply rail - powers N-channel FET gates and enables rail-to-rail analog swing |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Passes signals from V− to V+ without clipping - essential for full-scale ADC/DAC interfacing |
| Fault protection with output clamping | Clamps COM to V+ or V− during overvoltage - maintains defined output state instead of floating or latching |
| No power-supply sequencing required | Operates safely with arbitrary V+, V−, and GND ramp rates - simplifies power management in complex systems |
| Pin compatibility with DG403 | Direct PCB replacement for industry-standard SPDT switch - reduces redesign time and validation effort |
| Low charge injection (5 pC) | Minimizes voltage glitch on high-Z nodes during switching - critical for precision sample-and-hold circuits |
Applications
| Industrial Process Control | Avionics Signal Routing |
|---|---|
Use Scenario: Multiplexing sensor inputs (thermocouples, RTDs) into a shared ADC in harsh factory environments with ground bounce and EFT noise. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing fault-isolated signal path selection with rail-to-rail support for ±10V industrial standards. Use Value: Prevents sensor channel corruption during 25V transients on field wiring, eliminating need for external TVS or op-amp buffers. | Use Scenario: Selecting between primary and backup flight control signals in fly-by-wire systems requiring fail-safe continuity. IC Role / Device Role / Timing Role: Redundant signal switch with break-before-make timing and guaranteed open-circuit fault response. Use Value: Ensures no short-circuit occurs during channel transition, and COM remains clamped to safe rail during fault-meeting DO-160 Section 22 surge immunity requirements. |
| ATE Equipment | Data Acquisition Front-End |
Use Scenario: Channel switching in automated test equipment connecting DUT signals to precision source-measure units (SMUs). IC Role / Device Role / Timing Role: High-voltage SPDT switch enabling ±15V signal routing with sub-100 ns switching and <0.5 nA leakage. Use Value: Maintains measurement accuracy by minimizing off-channel leakage and preserving signal fidelity up to 30 MHz bandwidth. | Use Scenario: Analog input multiplexing for multi-channel oscilloscopes or spectrum analyzers handling ±5V to ±12V signals. IC Role / Device Role / Timing Role: Fault-tolerant analog switch with matched on-resistance (<6 Ω) ensuring consistent gain and phase across channels. Use Value: Eliminates channel-to-channel gain error caused by RON mismatch, improving relative accuracy in differential measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4632CSE+ | 0°C to +70°C operating range vs. −40°C to +85°C for MAX4632ESE+ | Not suitable for extended-temperature industrial or automotive under-hood use | Select MAX4632CSE+ only for commercial-grade bench equipment with controlled ambient |
| ADG408BRUZ | No fault protection; ±20V absolute max rating; 80 Ω typical RON; no rail-to-rail clamping | Requires external protection circuitry for overvoltage resilience; unsuitable for unconditioned field I/O | Choose ADG408BRUZ only when fault events are absent and cost is primary constraint |
Compared with MAX4632CSE+ and ADG408BRUZ, the MAX4632ESE+ uniquely delivers guaranteed −40°C to +85°C operation with integrated ±25V fault protection and rail-to-rail clamping-reducing BOM count and board area while meeting IEC 61000-4-4 compliance targets without external components.
Availability
MAX4632ESE+ is available at Aetrix Electronics and suitable for industrial process control, avionics signal routing, and ATE equipment requiring stable component supply across extended temperature ranges and high-reliability fault tolerance.
Supply support for MAX4632ESE+ 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, medical, and aerospace applications.
The MAX463x family was engineered specifically for high-voltage analog signal routing in fault-prone environments-delivering rail-to-rail operation, integrated fault protection, and drop-in compatibility with legacy switch footprints.
FAQ
What is the maximum fault voltage the MAX4632ESE+ can withstand with power applied?
The MAX4632ESE+ withstands up to ±25V on its NO/NC pins when powered with ±15V supplies. This limit scales with supply voltage: with ±12V supplies, fault tolerance is ±22V; with ±18V, it is ±25V (absolute max). Exceeding these values risks permanent damage, as confirmed in the Absolute Maximum Ratings table and Electrical Characteristics section of the MAX4632ESE+ datasheet.
Does the MAX4632ESE+ require power-supply sequencing during startup?
No, the MAX4632ESE+ does not require power-supply sequencing. Its internal architecture allows safe operation regardless of V+, V−, or GND ramp order-a key feature verified in the Applications Information section. This eliminates sequencing circuitry in systems with asymmetric or staggered power rails, and is explicitly stated as "No Power-Supply Sequencing Required" in the MAX4632ESE+ features list.
Can the MAX4632ESE+ be used with a single +24V supply?
Yes, the MAX4632ESE+ supports single-supply operation from +9V to +36V. When using +24V, connect V− to GND and ensure all digital inputs meet the adjusted logic thresholds (VINL ≈ 0.8V, VINH ≈ 2.4V). The device maintains rail-to-rail analog range from 0V to +24V, and fault protection extends to ±40V with power off-verified in the Single Supply Electrical Characteristics tables.
What is the on-resistance match between the two SPDT channels of the MAX4632ESE+?
The MAX4632ESE+ guarantees ≤6 Ω maximum on-resistance mismatch (∆RON) between its two SPDT channels at +25°C, measured under VCOM = ±10V and ICOM = 1 mA. This tight matching ensures consistent gain and phase response across channels in differential or ratiometric measurement systems, as documented in the Electrical Characteristics table under "On-Resistance Match Between Channels."
Is the MAX4632ESE+ pin-compatible with the DG403?
Yes, the MAX4632ESE+ has identical pinout and footprint to the DG403, as confirmed in the General Description and Pin Compatibility sections. However, only the NO and NC pins are fault-protected-COM, IN, V+, V−, and GND retain standard functionality. This allows direct PCB replacement in existing DG403 designs, though system-level fault resilience must be revalidated per application.
MAX4632ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4632ESE+ FAQ
1.How can I place an order for MAX4632ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4632ESE+ 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 MAX4632ESE+ reliable?
The price and inventory of MAX4632ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4632ESE+ is usually 5 days.
3.What payment methods are accepted for MAX4632ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4632ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4632ESE+?
MAX4632ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4632ESE+ 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 MAX4632ESE+?
For technical support, including MAX4632ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4632ESE+ requirements.
6.How does Aetrix verify that MAX4632ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX4632ESE+ 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 MAX4632ESE+ meets industry standards.
7.What is the process for return or replacement of MAX4632ESE+?
All MAX4632ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4632ESE+, 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 MAX4632ESE+ part is unused and in its original packaging.
Return procedure for MAX4632ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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