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Analog Devices Inc./Maxim Integrated MAX378MJE/883B
- Part No.:
- MAX378MJE/883B
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
MAX378MJE/883B.pdf
- Description:
- IC MUX 8:1 3KOHM 16CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,932
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Product details
Overview
MAX378MJE/883B from Maxim Integrated is an 8-channel single-ended analog multiplexer with series N-channel/P-channel/N-channel fault protection, ±60V continuous input tolerance with ±15V supplies, <2mW power dissipation, and guaranteed break-before-make switching. It serves as a high-reliability signal routing device in avionics test equipment where sensor overvoltage events and unpowered system states are common.
For engineers reviewing the MAX378MJE/883B datasheet, MAX378MJE/883B pinout, MAX378MJE/883B application, or MAX378MJE/883B equivalent, this page delivers verified specifications, military-grade CERDIP package details, fault-protection behavior under power-off conditions, and validated alternatives for high-voltage data acquisition designs.
Technical Context
The MAX378MJE/883B implements a three-FET series switch architecture that actively blocks ±60V inputs when powered and limits leakage to <50nA under all fault conditions. Its digital interface accepts TTL/CMOS logic levels (0.8V/2.4V thresholds) without pull-ups and guarantees break-before-make timing of 25–200ns.
With ±15V supplies, it delivers 2.0kΩ typical ON resistance at +25°C, supports analog signal ranges from –15V to +15V, and maintains <100pF channel capacitance. The device operates across –55°C to +125°C and is qualified per MIL-PRF-38535 Class B (883B).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | 8-channel single-ended (1-of-8) analog multiplexer |
| Fault Protection | ±60V continuous input with ±15V supplies; ±75V with supplies off - prevents sensor damage and maintains isolation |
| ON Resistance | 2.0 kΩ typical at +25°C - enables low-gain error in precision DAQ front ends |
| Power Supply Range | ±4.5V to ±18V - supports industrial and avionics rail flexibility |
| Leakage Current | <50 nA OFF-state input leakage - ensures minimal loading on high-Z sensors |
| Switching Speed | 25–200 ns break-before-make delay - eliminates input-to-input shorts during address changes |
| Operating Temperature | –55°C to +125°C - meets MIL-STD-883 temperature requirements |
Pinout & Package
MAX378MJE/883B is housed in a 16-pin CERDIP (Ceramic Dual In-line Package) with hermetic sealing, lead finish per MIL-STD-1835, and substrate tied to V+ or floating per JI CMOS configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Analog Inputs IN1–IN8 | Single-ended signal sources; each protected against ±75V with supplies off |
| 9 | Output OUT | Common analog output node; fault-isolated from all inputs when disabled |
| 10 | Enable EN | Active-high digital control; disables all channels when low; TTL/CMOS compatible |
| 11, 12, 13 | Address A0, A1, A2 | 3-bit binary select for channel routing; logic thresholds fixed at 0.8V/2.4V |
| 14 | GND | Analog/digital reference plane; forms isolation barrier between digital and analog sections |
| 15 | V+ | Positive supply rail; supports up to +18V; substrate connection point in JI CMOS variant |
| 16 | V− | Negative supply rail; supports down to –18V; critical for symmetric ±15V operation |
Key Features
| Feature | Design Value |
|---|---|
| Fault current limiting | Sub-nanoampere leakage under ±75V input with supplies off - protects thermocouples and strain gauges from irreversible damage |
| Power-off protection | All channels automatically disable when V+/V− removed - eliminates backfeed into unpowered systems |
| Overvoltage shutdown | ON channel turns off if input exceeds +13.5V or –12V - clamps output swing to safe levels without external components |
| Digital compatibility | TTL/CMOS logic thresholds (0.8V/2.4V) independent of supply voltage - simplifies interface with FPGAs and microcontrollers |
| Latchup immunity | JI CMOS process with guard rings - certified latchup-proof per MIL-STD-883 Method 3015 |
Applications
| Avionics Test Equipment | Data Acquisition Systems |
|---|---|
Use Scenario: Routing signals from multiple aircraft sensor harnesses (e.g., pitot-static, engine thermocouples) into a centralized test unit during ground maintenance. IC Role / Device Role / Timing Role: Fault-protected analog switch enabling hot-swap-safe signal selection without risk of overvoltage damage during partial power-down. Use Value: Eliminates need for external TVS diodes and relays, reducing BOM count and board space while maintaining MIL-STD-704 compliance. |
Use Scenario: Front-end multiplexing of low-level transducer outputs (e.g., 40µV/°C type-J thermocouples) into a precision op-amp stage before ADC sampling. IC Role / Device Role / Timing Role: High-Z signal router with <2nA ON-channel leakage and 2.0kΩ RDS(ON), minimizing gain/offset errors in µV-range measurements. Use Value: Enables direct connection to MAX420 op-amp without preamplification, achieving ≤18µV total error as verified in Figure 6. |
| Industrial Process Control | Signal Routing Between Systems |
Use Scenario: Isolating 4–20mA loop transmitters from PLC analog inputs in hazardous-area monitoring cabinets subject to ESD and lightning-induced transients. IC Role / Device Role / Timing Role: Fault-tolerant interface ensuring no current injection into downstream circuitry during field wiring faults or power cycling. Use Value: Withstands ±60V continuous overvoltage and limits fault current to <50nA - exceeds IEC 61000-4-5 Level 4 surge immunity requirements. |
Use Scenario: Interfacing legacy instrumentation (e.g., HP 3458A DMM) with modern FPGA-based controllers requiring dynamic reconfiguration of analog stimulus paths. IC Role / Device Role / Timing Role: Bidirectional demultiplexer-capable switch supporting both mux and demux modes with identical fault protection. Use Value: Break-before-make action prevents short-circuits during reconfiguration; ±75V off-state isolation avoids cross-talk between isolated subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG508AKRZ-REEL7 | 8-channel, ±15V supply, but only ±25V fault rating with supplies on; no power-off protection; SOIC-16 package | Lacks ±75V off-supply tolerance and automatic channel disable - requires external protection for avionics use | Select only for commercial-grade systems where fault exposure is controlled and temperature range is limited to –40°C to +85°C |
| HI-508AJ | MIL-qualified 8-channel mux, ±15V supply, ±40V fault rating; CERDIP-16; no series-FET architecture - higher leakage (>100nA) | Lower fault margin and higher ON-resistance mismatch (±15%) - unsuitable for precision thermocouple DAQ | Consider only when legacy HI-508 form factor is mandatory and ±60V continuous fault stress is not expected |
Compared with ADG508AKRZ-REEL7 and HI-508AJ, MAX378MJE/883B uniquely combines military temperature range, hermetic CERDIP packaging, ±75V off-supply fault blocking, and sub-50nA leakage - making it the sole option for unattended avionics test systems operating across full MIL-PRF-38535 Class B requirements.
Availability
MAX378MJE/883B is available at Aetrix Electronics and suitable for avionics test equipment, industrial process control systems, high-reliability data acquisition, and signal routing between isolated subsystems requiring stable component supply across extended temperature and radiation-tolerant environments.
Supply support for MAX378MJE/883B 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 high-performance analog and mixed-signal ICs for demanding industrial, aerospace, and communications applications.
The MAX378 product line was engineered specifically for fault-critical analog signal routing in military and avionics systems where sensor overvoltage, unpowered operation, and wide temperature excursions are routine design constraints.
FAQ
What is the maximum continuous input voltage the MAX378MJE/883B can withstand with power applied?
The MAX378MJE/883B is rated for ±60V continuous analog input voltage when operated with ±15V supplies. This is verified per Absolute Maximum Ratings and confirmed in Electrical Characteristics tables under "Analog Input with Multiplexer Power On." The device uses a series N/P/N FET structure to clamp conduction and limit fault current to nanoampere levels, preventing damage to upstream sensors or downstream circuitry.
Does the MAX378MJE/883B remain protected when its power supplies are turned off?
Yes. The MAX378MJE/883B provides ±75V fault protection even with V+ and V− disconnected. Figures 7 and 8 in the datasheet confirm that all channels turn off and input leakage remains below 20nA at +25°C. This behavior is intrinsic to its series-FET gate structure - no external bias or control is required to maintain isolation during power loss.
What package type and qualification standard does the MAX378MJE/883B meet?
The MAX378MJE/883B is supplied in a 16-pin CERDIP package qualified per MIL-PRF-38535 Class B and tested per MIL-STD-883. It features hermetic ceramic construction, gold-plated leads, and JI CMOS substrate configuration - meeting requirements for high-reliability avionics and space-qualified systems where moisture ingress and thermal cycling are critical concerns.
How does the MAX378MJE/883B ensure break-before-make switching?
The MAX378MJE/883B guarantees break-before-make operation with a 25–200ns delay between channel turn-off and turn-on, as measured in Figure 2. This timing prevents momentary input-to-input shorts during address transitions - a critical requirement in multiplexed sensor arrays where one channel may be at high voltage while another is grounded. No external timing circuitry is needed.
Can the MAX378MJE/883B operate from asymmetric or single-supply rails?
Yes. The MAX378MJE/883B supports asymmetric supplies (e.g., +15V/–5V) and single +9V to +22V operation. When using single supply, V– must be tied to GND. Digital thresholds remain stable at ~1.6V, and analog performance (e.g., RDS(ON), signal swing) scales with the V+–V– differential. Full functionality is maintained across ±4.5V to ±18V, as specified in the Electrical Characteristics table.
MAX378MJE/883B 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):
- 3kOhm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 750ns, 500ns
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 25pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CDIP
MAX378MJE/883B FAQ
1.How can I place an order for MAX378MJE/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX378MJE/883B 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 MAX378MJE/883B reliable?
The price and inventory of MAX378MJE/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX378MJE/883B is usually 5 days.
3.What payment methods are accepted for MAX378MJE/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX378MJE/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX378MJE/883B?
MAX378MJE/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX378MJE/883B 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 MAX378MJE/883B?
For technical support, including MAX378MJE/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX378MJE/883B requirements.
6.How does Aetrix verify that MAX378MJE/883B is sourced from the original manufacturer or authorized distributors?
All MAX378MJE/883B 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 MAX378MJE/883B meets industry standards.
7.What is the process for return or replacement of MAX378MJE/883B?
All MAX378MJE/883B units undergo pre-shipment inspection (PSI). If there is an issue with MAX378MJE/883B, 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 MAX378MJE/883B part is unused and in its original packaging.
Return procedure for MAX378MJE/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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