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Analog Devices Inc./Maxim Integrated MAX4508ESE+
- Part No.:
- MAX4508ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4508ESE+.pdf
- Description:
- IC MUX 8:1 400OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:297
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Product details
Overview
The MAX4508ESE+ from Maxim Integrated is a fault-protected, high-voltage single 8-to-1 analog multiplexer with rail-to-rail signal handling, ±40V overvoltage protection with supplies off, 400Ω max on-resistance, and TTL/CMOS-compatible logic inputs. It operates from dual ±4.5V to ±20V or single +9V to +36V supplies and is used in industrial data-acquisition systems requiring robust signal routing under fault conditions.
For engineers reviewing the MAX4508ESE+ datasheet, MAX4508ESE+ pinout, MAX4508ESE+ application, or MAX4508ESE+ equivalent, key selection criteria include fault-protection voltage limits (±40V power-off), on-resistance matching (≤15Ω), enable timing (tON ≤ 700ns), rail-to-rail analog range, and SOIC-16 package compatibility with legacy DG508 designs.
Technical Context
The MAX4508ESE+ uses parallel N- and P-channel FETs per channel to achieve low on-resistance and true rail-to-rail signal pass-through without degradation near supply rails. Its dual comparator-based fault detection clamps COM output to V+ or V− within 20ns when NO_ exceeds rails by >150mV.
Fault response is asymmetric: positive faults clamp COM to V+ via P2 FET; negative faults clamp to V− via N2 FET. During faults, COM output current is sourced/sunk up to ±10mA from V+/V−, and NO_ pins become high-impedance regardless of switch state or load configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | Dual ±4.5V to ±20V or single +9V to +36V - supports wide industrial and avionics power architectures without sequencing. |
| On-Resistance | 400Ω max - ensures minimal signal attenuation and gain error in precision sensor or DAC output routing. |
| On-Resistance Match | 15Ω max between channels - critical for matched-gain multi-channel instrumentation and calibration systems. |
| Fault Protection | ±40V with supplies off, ±25V with ±15V supplies - protects downstream circuitry during hot-swap, wiring faults, or ESD events. |
| Fault Response Time | 20ns - enables real-time clamping before transient energy damages connected ADCs or amplifiers. |
| Logic Compatibility | TTL/CMOS thresholds (VIL ≤ 0.8V, VIH ≥ 2.4V at +12V) - interoperable with microcontrollers and FPGAs without level-shifting. |
| Rail-to-Rail Handling | Full V− to V+ analog range - preserves dynamic range of ±10V industrial sensors and bipolar DAC outputs. |
Pinout & Package
MAX4508ESE+ is housed in a 16-pin narrow SOIC (S16-8) package, RoHS-compliant and lead-free (+ suffix). Pin layout follows industry-standard DG508 footprint for drop-in replacement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 A0 | Address Bit 0 | Selects one of eight input channels (LSB of 3-bit address). |
| 2 EN | Enable Input | Active-high digital control: disables all switches when low, prevents unintended conduction. |
| 3 V− | Negative Supply | Bipolar operation reference; must be ≤ −4.5V for dual-supply mode or tied to GND for single-supply use. |
| 4–11 NO1–NO8 | Analog Inputs | Fault-protected channel inputs; withstand ±40V with supplies off and clamp internally during overvoltage. |
| 12–13 NC | No Connect | Not internally bonded; left unconnected per datasheet recommendation. |
| 14 GND | Logic Ground | Reference for digital inputs only; isolated from analog signal paths to prevent noise coupling. |
| 15 A2 | Address Bit 2 | MSB of 3-bit address; determines channel selection with A1 and A0. |
| 16 A1 | Address Bit 1 | Middle bit of 3-bit address; decoding logic drives internal analog switches. |
| 8 COM | Analog Output | Common output node; not fault-protected - must remain within V− to V+ to avoid ESD diode conduction. |
| 13 V+ | Positive Supply | Primary power rail; supplies internal logic, level translators, and clamp FETs during fault conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Enables full utilization of ±15V sensor outputs and DAC ranges without clipping or headroom loss. |
| ±40V fault protection with supplies off | Allows safe connection of field wiring prior to system power-up, eliminating pre-power surge risks. |
| No power-supply sequencing required | Permits independent ramp-up of V+ and V− rails - simplifies power management in multi-rail industrial controllers. |
| All channels off with power off | Prevents back-driving or leakage into powered subsystems when main supply is removed. |
| Output clamped to appropriate supply during fault | Protects downstream op-amps and ADC inputs by limiting COM voltage to safe V+ or V− levels. |
| 20ns fault-response time | Meets IEC 61000-4-4 fast transient immunity requirements for industrial control I/O modules. |
Applications
| Data-Acquisition Systems | Industrial and Process Control |
|---|---|
Use Scenario: Multiplexing multiple ±10V thermocouple or strain-gauge amplifier outputs into a single high-resolution ADC. IC Role / Device Role / Timing Role: Fault-protected analog switch routing sensor signals while surviving field-wiring transients and ground-loop overvoltages. Use Value: Eliminates external TVS diodes and series resistors per channel, reducing BOM count and PCB area by >30%. | Use Scenario: Routing analog setpoint and feedback signals in PLC analog I/O modules exposed to 24VDC field wiring. IC Role / Device Role / Timing Role: High-voltage multiplexer enabling flexible channel assignment with built-in ±40V fault tolerance during maintenance or miswiring. Use Value: Prevents field-induced latch-up or destruction of downstream isolation amplifiers and ADC front-ends. |
| Avionics | Redundant/Backup Systems |
Use Scenario: Selecting between primary and backup flight sensor signals (e.g., airspeed, altitude) in airborne data concentrators. IC Role / Device Role / Timing Role: Single-pole-8-throw switch providing fail-safe signal routing with sub-20ns fault reaction to lightning-induced transients. Use Value: Meets DO-160 Section 22 induced transient requirements without external protection components. | Use Scenario: Automatic switchover between active and standby analog signal paths in medical infusion pump controllers. IC Role / Device Role / Timing Role: Fault-aware multiplexer ensuring continuity of critical analog monitoring loops during power interruption or overvoltage events. Use Value: Maintains closed-loop control integrity during brownouts by keeping COM output clamped rather than floating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fault-protected multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG508FBRZ | ±40V fault protection with supplies off; 350Ω max RON; requires ±15V supplies only - no single-supply operation. | Optimized for precision test equipment; lacks TTL-compatible logic thresholds - needs level-shifting with 3.3V/5V controllers. | Choose ADG508FBRZ when ultra-low leakage (<1nA) and tighter RON match (±5Ω) outweigh single-supply flexibility. |
| TS5A3159DCKR | Single-supply only (+1.65V to +5.5V); ±12V fault protection; 0.9Ω RON; no rail-to-rail analog range - limited to low-voltage logic-level switching. | Targeted at portable battery-powered systems; unsuitable for industrial ±10V signal routing due to voltage and fault-rating constraints. | Choose TS5A3159DCKR only for low-voltage, low-power consumer applications - not a functional substitute for MAX4508ESE+ in high-voltage contexts. |
Compared with ADG508FBRZ and TS5A3159DCKR, the MAX4508ESE+ uniquely combines wide dual/single supply support, true rail-to-rail analog handling, TTL/CMOS logic compatibility, and ±40V fault protection - making it the only option qualified for harsh industrial and avionics signal routing where voltage range, fault resilience, and interface simplicity are simultaneously critical.
Availability
MAX4508ESE+ is available at Aetrix Electronics and suitable for data-acquisition systems, industrial process control modules, and avionics signal routing requiring stable component supply across extended temperature ranges (−40°C to +85°C).
Supply support for MAX4508ESE+ 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 industrial, automotive, and communications markets.
The MAX4508ESE+ belongs to Maxim's fault-protected analog switch family, engineered specifically for high-voltage signal routing in environments prone to wiring faults, ESD, and power-supply transients.
FAQ
What is the maximum allowable overvoltage on the NO_ pins of the MAX4508ESE+ when power is off?
The MAX4508ESE+ supports ±40V overvoltage on NO_ pins with supplies off - verified per Absolute Maximum Ratings. This allows safe connection of field wiring before system power-up. Exceeding ±40V risks permanent damage. The COM pin is not fault-protected and must remain within V− to V+ at all times to avoid ESD diode conduction.
Does the MAX4508ESE+ support single-supply operation, and what is the minimum voltage?
Yes, the MAX4508ESE+ supports single-supply operation from +9V to +36V with V− tied to GND. At +9V, it maintains full functionality including fault protection, rail-to-rail signal handling, and TTL-compatible logic thresholds. Performance specifications such as on-resistance and switching time are guaranteed across this entire range per Electrical Characteristics tables.
What is the on-resistance matching specification for the MAX4508ESE+, and why does it matter?
The MAX4508ESE+ guarantees ≤15Ω on-resistance match (ΔRON) between any two channels. This tight matching ensures consistent gain and offset across multiplexed sensor channels in instrumentation systems - critical for multi-channel calibration, ratiometric measurements, and differential signal routing where mismatch introduces measurement errors.
Can the MAX4508ESE+ be used as a direct replacement for the DG508 in existing designs?
Yes, the MAX4508ESE+ is explicitly pin-compatible with the DG508 and shares identical SOIC-16 pinout and logic-level behavior. It improves upon the DG508 with rail-to-rail signal handling, ±40V fault protection, and lower on-resistance drift over temperature - enabling drop-in upgrades without PCB changes in legacy industrial and test equipment.
What happens to the COM output during a positive overvoltage fault on an NO_ pin?
During a positive overvoltage fault (NO_ > V+ +150mV), the MAX4508ESE+ turns off the main N1/P1 FETs and activates the P2 clamp FET, forcing the COM output to V+. This clamping occurs within 20ns and limits downstream voltage to a safe level. Current is sourced from V+ up to ±10mA - ensure external load impedance prevents exceeding the 30mA absolute maximum rating.
MAX4508ESE+ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4508ESE+ FAQ
1.How can I place an order for MAX4508ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4508ESE+ 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 MAX4508ESE+ reliable?
The price and inventory of MAX4508ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4508ESE+ is usually 5 days.
3.What payment methods are accepted for MAX4508ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4508ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4508ESE+?
MAX4508ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4508ESE+ 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 MAX4508ESE+?
For technical support, including MAX4508ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4508ESE+ requirements.
6.How does Aetrix verify that MAX4508ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX4508ESE+ 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 MAX4508ESE+ meets industry standards.
7.What is the process for return or replacement of MAX4508ESE+?
All MAX4508ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4508ESE+, 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 MAX4508ESE+ part is unused and in its original packaging.
Return procedure for MAX4508ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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