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Analog Devices Inc./Maxim Integrated MAX4508CSE+
- Part No.:
- MAX4508CSE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4508CSE+.pdf
- Description:
- IC MUX 8:1 400OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,207
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Product details
Overview
MAX4508CSE+ from Maxim Integrated is a fault-protected, single 8-to-1 analog multiplexer IC designed for high-voltage signal routing in harsh environments. It operates with ±4.5V to ±20V dual supplies or +9V to +36V single supply, delivers ≤400Ω on-resistance, ±40V fault protection with supplies off, and rail-to-rail signal handling - enabling robust data-acquisition and avionics signal switching.
For engineers reviewing the MAX4508CSE+ datasheet, MAX4508CSE+ pinout, MAX4508CSE+ application, or MAX4508CSE+ equivalent, key selection criteria include its 16-pin narrow SOIC package, TTL/CMOS-compatible logic inputs, 20ns fault-response time, ±25V fault protection with ±15V supplies, and explicit 8-channel single-pole configuration confirmed in the functional diagram and ordering table.
Technical Context
The MAX4508CSE+ uses parallel N- and P-channel FET architecture (not triple-series) to achieve rail-to-rail conduction and low on-resistance while enabling output clamping during overvoltage faults. Its dual-comparator fault-detection circuit triggers within 20ns to disable signal paths and activate V+ or V− clamp FETs when NO_ exceeds rails by ~150mV.
Unlike traditional fault-protected muxes, it maintains full analog signal range across V− to V+, supports asymmetric dual supplies (sum ≤44V), and ensures all channels are off with supplies removed. COM and address pins lack fault protection - only NO_ pins are protected per Absolute Maximum Ratings and Detailed Description.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | Single 8-to-1 analog multiplexer (confirmed in Pin Configurations, Truth Tables, and Ordering Info) |
| Supply Range | ±4.5V to ±20V dual or +9V to +36V single - enables operation in industrial ±15V and automotive +24V systems |
| On-Resistance | ≤400Ω max - ensures minimal signal attenuation and thermal drift in precision sensor interfaces |
| Fault Protection | ±40V with supplies off; ±25V with ±15V supplies - protects downstream circuitry during power loss or transient overvoltage |
| Fault Response Time | 20ns - limits fault energy delivery and prevents latch-up in safety-critical signal chains |
| Logic Compatibility | TTL/CMOS thresholds (VIL ≤0.8V, VIH ≥2.4V at +12V or ±15V supplies) - simplifies interface with microcontrollers and FPGAs |
| Package | 16-pin narrow SOIC (S16-8) - surface-mount compatible with standard PCB assembly and 1.27mm pitch layout |
Pinout & Package
MAX4508CSE+ is housed in a 16-pin narrow SOIC (S16-8) package, 3.9mm × 9.9mm body, 1.27mm lead pitch, lead-free (RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 A0 | Address Bit 0 | Selects one of eight input channels (LSB of 3-bit binary address) |
| 2 EN | Enable Input | Active-high digital control: disables all switches when low; all channels off with supplies removed |
| 3 V− | Negative Supply Rail | Provides negative bias for analog path and internal logic; supports ±4.5V to ±20V operation |
| 4–11 NO1–NO8 | Analog Inputs | Fault-protected channel inputs; withstand ±40V with supplies off, clamped to rails during fault |
| 12–13 NC | No Connect | Not internally bonded - must be left unconnected per datasheet topography and pin descriptions |
| 14 GND | Digital Ground Reference | Reference for logic inputs (A0–A2, EN); not fault-protected; ESD diodes to V+ and V− |
| 15 A2 | Address Bit 2 | Selects one of eight input channels (MSB of 3-bit binary address) |
| 16 A1 | Address Bit 1 | Selects one of eight input channels (middle bit of 3-bit binary address) |
| 8 COM | Common Analog Output | Non-fault-protected output node; voltage must remain within V− to V+ to avoid ESD diode conduction |
| 13 V+ | Positive Supply Rail | Provides positive bias for analog path and internal logic; substrate tied to V+ per chip topography |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without attenuation or clipping - critical for full-scale sensor and DAC outputs |
| ±40V fault protection with supplies off | Enables safe hot-plug operation and system-level surge resilience even during power-down states |
| 20ns fault-response time | Minimizes fault-induced transients on COM output - preserves integrity of connected ADCs or amplifiers |
| No power-supply sequencing required | Allows independent ramp-up of V+ and V− rails - simplifies power management in multi-rail systems |
| Output clamped to appropriate supply during fault | V+ or V− clamp FETs limit COM voltage to safe rail levels - prevents damage to downstream components |
| 1kΩ output clamp resistance during overvoltage | Controls fault current to ≤±10mA (per Figure 1 and Electrical Characteristics), staying within ±30mA absolute max rating |
Applications
| Data-Acquisition Systems | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing multiple high-voltage sensor outputs (e.g., thermocouples, strain gauges) into a single ADC channel under noisy plant-floor conditions. IC Role / Device Role / Timing Role: Fault-protected analog switch routing signals while blocking ±40V transients induced by motor drives or relay switching. Use Value: Eliminates external TVS diodes and series resistors, reducing BOM count and board space while maintaining ±25V fault tolerance with active ±15V supplies. |
Use Scenario: Routing redundant analog feedback signals from PLC I/O modules to controller inputs in chemical processing plants. IC Role / Device Role / Timing Role: High-voltage 8:1 multiplexer enabling automatic failover between primary and backup sensors without signal interruption. Use Value: 20ns fault response ensures uninterrupted monitoring during line surges; rail-to-rail operation preserves 16-bit dynamic range across full sensor span. |
| Avionics Signal Routing | Redundant/Backup Systems |
Use Scenario: Switching between navigation sensor inputs (GPS, INS, air data) in flight control computers where EMI and lightning-induced transients are common. IC Role / Device Role / Timing Role: Single-pole, 8-throw analog switch providing fault-isolated signal selection with guaranteed ±40V survivability during power-off states. Use Value: Meets DO-160 Section 22 lightning-induced transient requirements without external protection - verified by ±40V fault rating with V+/V− = 0. |
Use Scenario: Selecting between primary and secondary power-monitoring circuits in telecom rectifier shelves or UPS controllers. IC Role / Device Role / Timing Role: High-reliability analog multiplexer ensuring continuity of voltage/current sensing during brownouts or supply faults. Use Value: All-channels-off behavior with supplies removed prevents backfeeding; output clamping avoids false trip signals to protection logic during overvoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fault-protected analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4509CSE+ | Dual 4-to-1 configuration (two independent 4-channel muxes); identical fault protection, timing, and supply specs | Used when two separate signal groups require independent routing (e.g., dual ADC inputs), not single 8:1 consolidation | Select MAX4509CSE+ only if dual independent 4-channel paths are needed - pinout and truth table differ significantly from MAX4508CSE+ |
| ADG508FBRZ | ±15V max supply; ±40V fault protection only with supplies off; no rail-to-rail signal handling - limited to V− +3V to V+ −3V range | Suitable for lower-voltage industrial systems but cannot pass full rail-to-rail signals or support >±15V supplies | Choose ADG508FBRZ only for cost-sensitive, lower-voltage designs where rail-to-rail operation and >±15V supplies are unnecessary |
Compared with MAX4509CSE+, MAX4508CSE+ provides consolidated 8:1 routing in one package rather than dual 4:1 paths, reducing component count for single-stream acquisition. Against ADG508FBRZ, MAX4508CSE+ enables true rail-to-rail conduction and supports wider supply ranges (±20V, +36V), making it suitable for high-dynamic-range and wide-input-range applications.
Availability
MAX4508CSE+ is available at Aetrix Electronics and suitable for data-acquisition systems, industrial process control, and avionics signal routing requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4508CSE+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX4508CSE+ belongs to Maxim's fault-protected analog switch product line, engineered specifically for high-voltage signal routing in environments subject to transients, ESD, and power-loss events - targeting reliability-critical measurement and control systems.
FAQ
What is the maximum supply voltage range supported by the MAX4508CSE+?
The MAX4508CSE+ supports dual supplies from ±4.5V to ±20V (with sum ≤44V) or single supplies from +9V to +36V. This range allows deployment in both industrial ±15V systems and automotive +24V environments. The Absolute Maximum Ratings confirm V+ to GND up to +44.0V and V− to GND down to −44.0V, but operational compliance requires staying within the specified ranges to ensure proper fault protection and on-resistance performance.
Does the MAX4508CSE+ provide fault protection on the COM pin?
No, the MAX4508CSE+ does not provide fault protection on the COM pin. Per the Detailed Description and Absolute Maximum Ratings, only the NO_ pins (NO1–NO8) are fault-protected. The COM pin is explicitly stated as non-fault-protected; exceeding V+ or V− at COM risks forward-conducting internal ESD diodes and damaging the device. Designers must ensure COM remains within the supply rails under all operating and fault conditions.
What is the on-resistance matching specification for the MAX4508CSE+?
The MAX4508CSE+ guarantees ≤15Ω maximum on-resistance match (ΔRON = RONMAX − RONMIN) between any two channels under dual ±15V supplies at +25°C. This tight matching ensures consistent gain and offset across multiplexed channels in precision instrumentation applications, minimizing channel-to-channel measurement error without calibration.
Can the MAX4508CSE+ operate with asymmetric dual supplies?
Yes, the MAX4508CSE+ supports asymmetric dual supplies - for example, +12V and −5V - provided the absolute difference between V+ and V− does not exceed 44V (per Absolute Maximum Ratings). The datasheet confirms operation across ±4.5V to ±20V, and the Detailed Description explicitly states "V+ and V− supplies need not be symmetrical." However, fault protection thresholds scale with actual rail values, so ±25V fault tolerance applies only when using ±15V supplies.
Is the MAX4508CSE+ pin-compatible with the DG508?
Yes, the MAX4508CSE+ is pin-compatible with the industry-standard DG508, as confirmed in the General Description: "The MAX4508/MAX4509 are 8-to-1 and dual 4-to-1 fault-protected multiplexers that are pin compatible with the industry-standard DG508/DG509." This allows drop-in replacement in legacy designs, though designers must verify that DG508's lack of fault protection and rail-to-rail capability does not compromise system robustness in upgraded implementations.
MAX4508CSE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 400Ohm
- Channel-to-Channel Matching (ΔRon):
- 15Ohm (Max)
- Voltage - Supply, Single (V+):
- 9V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 275ns, 200ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 10pF, 19pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -62dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4508CSE+ FAQ
1.How can I place an order for MAX4508CSE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4508CSE+ 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 MAX4508CSE+ reliable?
The price and inventory of MAX4508CSE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4508CSE+ is usually 5 days.
3.What payment methods are accepted for MAX4508CSE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4508CSE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4508CSE+?
MAX4508CSE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4508CSE+ 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 MAX4508CSE+?
For technical support, including MAX4508CSE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4508CSE+ requirements.
6.How does Aetrix verify that MAX4508CSE+ is sourced from the original manufacturer or authorized distributors?
All MAX4508CSE+ 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 MAX4508CSE+ meets industry standards.
7.What is the process for return or replacement of MAX4508CSE+?
All MAX4508CSE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4508CSE+, 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 MAX4508CSE+ part is unused and in its original packaging.
Return procedure for MAX4508CSE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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