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Analog Devices Inc./Maxim Integrated MAX379MJE/883B
- Part No.:
- MAX379MJE/883B
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
MAX379MJE/883B.pdf
- Description:
- IC SWITCH SP4T X 2 3KOHM 16CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,121
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Product details
Overview
MAX379MJE/883B from Maxim Integrated is a 4-channel differential (2-of-8) fault-protected analog multiplexer with series N-channel/P-channel/N-channel switch architecture, ±60V continuous input tolerance under ±15V supplies, <2mW power dissipation, break-before-make timing, and TTL/CMOS-compatible digital inputs - deployed in avionics test equipment for high-reliability signal routing under voltage fault conditions.
For engineers reviewing the MAX379MJE/883B datasheet, MAX379MJE/883B pinout, MAX379MJE/883B application, or MAX379MJE/883B equivalent, key selection criteria include fault protection level (±75V with supplies off), ON-resistance matching (±2% at ±10V), leakage current under overvoltage (<20nA), dual-output isolation, and MIL-PRF-38535 Class B qualification for extended temperature operation (-55°C to +125°C).
Technical Context
The MAX379MJE/883B implements a triple-FET series structure (N-P-N) per channel that actively blocks fault currents by turning off either the N- or P-channel device depending on input polarity and supply state - enabling nanoamp-level leakage even during ±75V input faults with V+/V- unpowered. Its differential output architecture (OUTA/OUTB) supports true balanced signal switching without common-mode coupling.
Digital control uses address pins A0/A1 and enable EN with guaranteed 0.8V/2.4V logic thresholds across -55°C to +125°C, ensuring robust operation in harsh environments. Break-before-make delay is 25–200ns, and settling time to 0.1% is 3.5µs - optimized for precision data acquisition front ends where channel crosstalk must remain below -70dB at 100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | 4-channel differential (2-of-8) analog multiplexer - selects one of four differential input pairs to two dedicated outputs (OUTA/OUTB). |
| Fault Protection | ±75V input tolerance with supplies off; ±60V continuous with ±15V supplies - prevents sensor damage and maintains isolation during system power loss. |
| ON Resistance | 2.0kΩ typical at +25°C (±10V analog input, ±15V supplies) - enables low-gain error in precision DAQ systems when paired with high-Z amplifiers. |
| Leakage Current | <20nA OFF-state output leakage under ±60V overvoltage - ensures minimal signal corruption in high-impedance measurement paths. |
| Supply Range | ±4.5V to ±18V continuous operation - supports industrial and avionics rails including ±5V, ±12V, and ±15V without performance degradation. |
| Temperature Range | -55°C to +125°C (M-grade, MIL-PRF-38535 Class B) - qualified for flight-critical and embedded military applications. |
| Switching Speed | Access time 0.5–1.0µs; break-before-make delay 25–200ns - prevents input-to-input shorts during channel transitions in multi-sensor systems. |
Pinout & Package
MAX379MJE/883B is supplied 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 left floating per JI CMOS requirements. Package dimensions: 0.765" × 0.299" × 0.104" (19.43mm × 7.60mm × 2.65mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (IN1A, IN1B, IN2A, IN2B) |
Differential input pair terminals | Accept balanced analog signals; each pair routed independently to OUTA/OUTB when selected - supports noise-rejecting measurements. |
| 5, 6, 7, 8 (IN3A, IN3B, IN4A, IN4B) |
Differential input pair terminals | Additional differential input channels; all eight inputs (four pairs) share identical fault-protection behavior and leakage specs. |
| 9, 10 (OUTA, OUTB) |
Differential output terminals | Deliver selected differential signal; isolated from other channels via >70dB off-isolation at 100kHz - preserves signal integrity in mixed-signal systems. |
| 11, 12 (A0, A1) |
Binary address inputs | Select one of four differential channels (00→CH1, 01→CH2, 10→CH3, 11→CH4); logic thresholds 0.8V/2.4V ensure compatibility with TTL and CMOS drivers. |
| 13 (EN) |
Enable input | Active-high; disables all channels when low - provides system-level fault containment and power sequencing control. |
| 14 (GND) |
Analog/digital ground reference | Common return for V-, digital inputs, and internal bias - forms part of the isolation barrier between analog and digital sections. |
| 15 (V+) |
Positive supply rail | +4.5V to +18V; powers P-channel FETs and logic - substrate connection point per JI CMOS specification. |
| 16 (V-) |
Negative supply rail | -4.5V to -18V; powers N-channel FETs - establishes full analog swing range and defines fault clamp thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Fault-protected architecture | Series N-P-N FET structure limits input fault current to <100nA under ±75V with supplies off - eliminates need for external clamping diodes or current-limiting resistors. |
| Dual differential outputs | Independent OUTA/OUTB pins support true differential signal routing without shared output node - avoids common-mode injection in precision instrumentation. |
| Break-before-make switching | Guaranteed 25–200ns delay prevents momentary shorting between input pairs - critical for avoiding cross-talk in multi-sensor avionics monitoring. |
| Latchup-proof construction | Junction-isolated CMOS process with no parasitic SCR paths - immune to latchup under transient overvoltage or ESD events per MIL-STD-883 Method 3015. |
| MIL-qualified reliability | M-grade CERDIP packaging with MIL-PRF-38535 Class B screening - includes burn-in, temperature cycling, and hermeticity testing for aerospace deployment. |
Applications
| Avionics Test Equipment | Industrial Data Acquisition |
|---|---|
|
Use Scenario: Routing multiple sensor outputs (e.g., strain gauges, RTDs, thermocouples) to a single high-accuracy ADC in airborne health-monitoring systems. IC Role / Device Role / Timing Role: Fault-protected differential multiplexer enabling safe hot-swap of sensor inputs during powered maintenance without damaging flight-critical sensors. Use Value: ±75V fault tolerance with supplies off prevents catastrophic failure during unexpected power loss - meeting DO-160 Section 22 lightning-induced transient requirements. |
Use Scenario: Consolidating 4 differential pressure transducer outputs into a PLC analog input module operating in hazardous industrial zones. IC Role / Device Role / Timing Role: High-voltage analog switch providing galvanic isolation between field-side sensors and control-side signal conditioning circuitry. Use Value: <20nA OFF-state leakage ensures sub-µV offset drift in 24-bit sigma-delta ADC front ends - maintaining ENOB >21 bits over full temperature range. |
| Signal Routing Between Systems | Process Control Instrumentation |
|
Use Scenario: Interfacing legacy 4–20mA loop-powered transmitters with modern Ethernet-based DCS controllers requiring differential analog inputs. IC Role / Device Role / Timing Role: Bidirectional differential multiplexer supporting both mux and demux modes with full fault protection on all signal paths. Use Value: Dual OUTA/OUTB capability allows simultaneous routing of primary and redundant signals - satisfying IEC 61508 SIL-2 functional safety architecture requirements. |
Use Scenario: Multiplexing outputs from four independent pH/ORP analyzers into a centralized lab analyzer with shared calibration reference. IC Role / Device Role / Timing Role: Precision analog switch with matched ON-resistance (±2%) across channels - enabling software-based gain/offset correction using zero and reference inputs. Use Value: 3.5µs 0.1% settling time allows 200ksps aggregate sampling across four channels - exceeding ISA-88 batch control cycle timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1209BRUZ | Single-supply only (+3V to +16.5V); no negative rail support; ±40V fault rating with supplies on; not MIL-qualified. | Suitable for commercial industrial PLCs but lacks ±75V fault margin and extended temperature operation required for avionics. | Prefer MAX379MJE/883B when system-level fault immunity, dual-supply flexibility, or military qualification is mandatory. |
| MAX379EJE | Same die and pinout; rated for -40°C to +85°C; non-MIL CERDIP; lower screening level (ESCC or commercial grade). | Valid for ground-based test benches or non-flight hardware where full MIL-PRF-38535 Class B is not mandated. | Choose MAX379MJE/883B when operating environment exceeds +85°C or requires radiation-hardened screening per MIL-STD-883. |
Compared with ADG1209BRUZ and MAX379EJE, the MAX379MJE/883B uniquely delivers MIL-qualified fault protection up to ±75V with supplies off, dual-rail operation down to ±4.5V, and guaranteed performance across -55°C to +125°C - making it the only option for flight-critical signal routing where zero-failure reliability is non-negotiable.
Availability
MAX379MJE/883B is available at Aetrix Electronics and suitable for avionics test equipment, industrial data acquisition systems, and process control instrumentation requiring stable component supply under extended temperature and high-reliability conditions.
Supply support for MAX379MJE/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 applications in aerospace, industrial, and medical markets - emphasizing fault tolerance, precision, and ruggedized packaging.
The MAX379 belongs to Maxim's fault-protected analog multiplexer product line, engineered specifically for signal routing in safety-critical systems where input overvoltage, power loss, or sensor fault conditions must not compromise system integrity or damage upstream components.
FAQ
What is the maximum continuous input voltage the MAX379MJE/883B can withstand with power supplies active?
The MAX379MJE/883B supports ±60V continuous input voltage when operated from ±15V supplies. This rating is validated per Absolute Maximum Ratings and confirmed in Electrical Characteristics tables under "Analog Input with Multiplexer Power On." Exceeding ±60V may trigger internal blocking action, limiting current to nanoamp levels but not guaranteeing long-term reliability beyond the specified limit. The MAX379MJE/883B maintains this rating across its full -55°C to +125°C operating range.
Does the MAX379MJE/883B support demultiplexer operation, and how is fault protection maintained in that mode?
Yes, the MAX379MJE/883B functions bidirectionally as a demultiplexer: the OUTA/OUTB pins accept an input signal while any of the four differential input pairs act as outputs. Fault protection remains fully active - all channels turn off if overvoltage occurs on any output or input, and leakage stays below 20nA even with ±75V applied to outputs while supplies are off. This behavior is explicitly documented in the "Operation as a Demultiplexer" section of the datasheet.
What is the ON-resistance matching specification for the MAX379MJE/883B, and why does it matter in precision applications?
The MAX379MJE/883B exhibits ±2% RDS(ON) matching across channels at +10V analog input and ±15V supplies, as noted in Typical Operating Characteristics. This tight matching minimizes gain error when performing ratiometric measurements (e.g., bridge sensor excitation with reference leg switching) and enables accurate software-based channel calibration. Mismatch directly contributes to differential nonlinearity in multi-channel DAQ systems - making this spec critical for 20+ bit resolution accuracy.
How does the MAX379MJE/883B achieve latchup immunity, and is it verified per industry standards?
The MAX379MJE/883B uses junction-isolated CMOS technology with no parasitic SCR structures, eliminating latchup susceptibility. This is confirmed by design and verified through MIL-STD-883 Method 3015.3 testing (latchup immunity) as part of its MIL-PRF-38535 Class B qualification. Unlike bulk CMOS multiplexers, the MAX379MJE/883B sustains ±75V transients without entering latchup - a requirement for avionics and nuclear instrumentation applications.
Can the MAX379MJE/883B operate from asymmetric power supplies, and what are the implications for analog signal swing?
Yes, the MAX379MJE/883B supports asymmetric supplies (e.g., +15V and -5V) and single supplies (e.g., +9V to +22V with V- tied to GND). Analog output swing is limited to approximately V+ – 1.5V and V- + 3V - so with +15V/–5V, the usable range is roughly –2V to +13.5V. Digital thresholds remain stable near 1.6V, preserving TTL/CMOS compatibility. The MAX379MJE/883B guarantees operation across ±4.5V to ±18V, with RDS(ON) and leakage values characterized at multiple supply points.
MAX379MJE/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- 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, 12pF
- 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
MAX379MJE/883B FAQ
1.How can I place an order for MAX379MJE/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX379MJE/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 MAX379MJE/883B reliable?
The price and inventory of MAX379MJE/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX379MJE/883B is usually 5 days.
3.What payment methods are accepted for MAX379MJE/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX379MJE/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX379MJE/883B?
MAX379MJE/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX379MJE/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 MAX379MJE/883B?
For technical support, including MAX379MJE/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX379MJE/883B requirements.
6.How does Aetrix verify that MAX379MJE/883B is sourced from the original manufacturer or authorized distributors?
All MAX379MJE/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 MAX379MJE/883B meets industry standards.
7.What is the process for return or replacement of MAX379MJE/883B?
All MAX379MJE/883B units undergo pre-shipment inspection (PSI). If there is an issue with MAX379MJE/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 MAX379MJE/883B part is unused and in its original packaging.
Return procedure for MAX379MJE/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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