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Analog Devices Inc./Maxim Integrated MAX319MJA
- Part No.:
- MAX319MJA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX319MJA.pdf
- Description:
- IC INTEGRATED CIRCUIT
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Inventory:2,198
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Product details
Overview
MAX319MJA from Maxim Integrated is a precision SPDT CMOS analog switch with one normally open (NO) and one normally closed (NC) channel, rated for -55°C to +125°C operation in 8-pin CERDIP package. It delivers <35Ω max on-resistance, <10pC charge injection, <6nA off-leakage at +85°C, and rail-to-rail analog signal handling up to ±15.5V. It is used in military radios and guidance systems requiring high-reliability switching under extreme temperature conditions.
For engineers reviewing the MAX319MJA datasheet, MAX319MJA pinout, MAX319MJA application, or MAX319MJA equivalent, key selection criteria include guaranteed on-resistance matching (<2Ω), break-before-make timing (5–13ns), ESD tolerance (>±2000V), bipolar/single-supply flexibility (+10V to +30V or ±4.5V to ±20V), and MIL-qualified temperature range support.
Technical Context
The MAX319MJA implements a monolithic CMOS SPDT architecture with independent NO and NC paths sharing a common COM terminal. Its logic input (IN) controls complementary switching states: logic low activates NC, logic high activates NO - with guaranteed break-before-make timing (5–13ns) preventing momentary shorting during transition.
It operates across dual supplies (±4.5V to ±20V) or single supply (+10V to +30V), with VL referenced to GND and configurable for TTL/CMOS compatibility. Analog signal range spans (V− − 2V) to (V+ + 2V), limited only by ±44V absolute maximum V+−V− differential, enabling true rail-to-rail signal switching without clipping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT (1× NO + 1× NC), non-latching, complementary control |
| On Resistance (max) | 35Ω at TA = TMIN to TMAX; ensures minimal signal attenuation and voltage drop in precision analog paths |
| On Resistance Match | <2Ω between NO and NC channels at +25°C; critical for matched gain/phase in differential or sampling circuits |
| Charge Injection | <10pC; limits voltage glitch on sampled capacitors in S/H circuits and prevents settling errors |
| Off-Leakage Current | <6nA at +85°C; preserves high-impedance node integrity in battery-powered or low-power sensor interfaces |
| ESD Rating | >±2000V per Method 3015.7; enables robust handling in field-deployed military and avionics assemblies |
| Operating Temp Range | −55°C to +125°C; qualified for extended-range CERDIP packaging per MIL-STD-883 requirements |
Pinout & Package
MAX319MJA uses an 8-pin CERDIP (ceramic dual-in-line) package with 0.300-inch width, hermetically sealed for high-reliability aerospace/military use. Pin 1 is COM (common analog terminal); pins 2 and 8 are NC and NO respectively; pin 3 is GND; pins 4 and 7 are V+ and V−; pin 5 is VL (logic supply); pin 6 is IN (digital control input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Shared connection point for both NO and NC paths; must be routed with low-inductance analog trace |
| 2 - N.C. | No-connect terminal | Not internally connected; left unconnected on PCB; no routing or pull-up/pull-down required |
| 3 - GND | Logic ground reference | Reference for VL and IN signals; requires low-impedance connection to system logic ground plane |
| 4 - V+ | Positive analog supply | Bias for P-channel MOSFETs; sets upper analog signal limit; decoupling capacitor mandatory |
| 5 - VL | Logic-level supply input | Defines logic threshold (2.4V high / 0.8V low); connect to +5V for TTL or to V+ for CMOS compatibility |
| 6 - IN | Digital control input | Inverting logic sense: low = NC closed / NO open; high = NC open / NO closed |
| 7 - V− | Negative analog supply | Bias for N-channel MOSFETs; sets lower analog signal limit; decoupling capacitor mandatory |
| 8 - NC | Normally closed analog terminal | Closed when IN = low; opens when IN = high; used for default-path or fail-safe analog routing |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input signals from (V− − 2V) to (V+ + 2V) - enables full utilization of supply rails in ±15V systems |
| Guaranteed break-before-make | 5–13ns delay prevents simultaneous conduction; eliminates transient shorts in multiplexed sensor or power-path designs |
| Low and matched on-resistance | <35Ω max with <2Ω match between NO/NC paths - essential for precision instrumentation and calibration circuits |
| Ultra-low charge injection | <10pC - minimizes voltage step on hold capacitors, reducing acquisition time and error in sample-and-hold stages |
| MIL-temperature qualified CERDIP | −55°C to +125°C operation with hermetic seal - meets reliability requirements for defense electronics and downhole tools |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
|
Use Scenario: Signal path selection between RF front-end modules and IF processing chains in tactical HF/VHF transceivers. IC Role / Device Role / Timing Role: SPDT analog switch routing antenna diversity or filter bank selection under microcontroller control. Use Value: Guaranteed break-before-make prevents RF coupling during reconfiguration; low leakage preserves dynamic range in sensitive receive paths. |
Use Scenario: Multiplexing inertial sensor outputs (gyros, accelerometers) into ADC inputs within flight control computers. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling of multiple high-impedance sensor nodes without crosstalk or offset drift. Use Value: Matched on-resistance and flat RON ensure consistent gain scaling across channels; low charge injection avoids hold-capacitor corruption. |
| Heads-Up Displays (HUD) | Test Equipment |
|
Use Scenario: Switching video sync signals and analog RGB drive lines between primary display and backup projection paths in aviation HUDs. IC Role / Device Role / Timing Role: High-reliability SPDT switch managing redundant video signal routing with fail-safe NC default state. Use Value: NC path remains closed during power loss or logic fault - maintains primary display path without external supervision. |
Use Scenario: Automated test fixture routing of calibrated reference voltages and DUT signals to measurement instruments. IC Role / Device Role / Timing Role: Low-leakage, low-RON analog switch enabling accurate DC/low-frequency signal switching in metrology-grade ATE. Use Value: Sub-6nA off-leakage at +85°C prevents measurement drift during thermal soak tests; ESD hardening withstands repeated probe contact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX319EJA | Same die, −40°C to +85°C temp range, identical electrical specs | Not qualified for extended military temperature cycling or long-term storage at −55°C | Select MAX319EJA only for commercial/industrial environments where full MIL-temp range is unnecessary |
| ADG419BRZ | SPDT, 25Ω RON, −40°C to +85°C, SOIC-8, 12V max supply | Lacks rail-to-rail capability beyond ±10V; no guaranteed break-before-make; lower ESD (±2000V HBM only) | Choose ADG419BRZ for cost-sensitive industrial test gear where ±12V operation and −55°C start-up are not required |
Compared with MAX319MJA, MAX319EJA offers identical performance at reduced temperature coverage, while ADG419BRZ trades MIL-spec ruggedness and wide-supply flexibility for lower cost and smaller footprint in benign environments.
Availability
MAX319MJA is available at Aetrix Electronics and suitable for military radios, guidance systems, heads-up displays, and test equipment requiring stable component supply across extended temperature extremes and long product lifecycles.
Supply support for MAX319MJA 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 semiconductor solutions for demanding industrial, automotive, and defense applications.
The MAX317/MAX318/MAX319 family was engineered specifically for high-fidelity analog signal routing in mission-critical systems where leakage, charge injection, and temperature stability directly impact measurement accuracy and functional safety.
FAQ
What is the maximum allowable voltage difference between V+ and V− for MAX319MJA?
The MAX319MJA has an absolute maximum V+−V− rating of +44V. This allows operation with asymmetric supplies such as +24V and −5V, provided the total differential does not exceed this limit. Exceeding +44V risks permanent damage, even if individual supply rails remain within their respective voltage ranges relative to V−.
Does MAX319MJA support single-supply operation, and what are the logic interface requirements?
Yes, MAX319MJA supports single-supply operation from +10V to +30V. For TTL compatibility, VL must be tied to +5V; for CMOS compatibility, VL connects to V+. GND serves as the logic reference, and IN accepts standard 0.8V/2.4V thresholds regardless of supply configuration. The MAX319MJA datasheet confirms functionality across both modes without external level-shifting.
How is the break-before-make timing specified for MAX319MJA, and is it guaranteed over temperature?
Break-before-make interval (tD) for MAX319MJA is specified as 5ns (min) to 13ns (max) at +25°C, with characterization across −55°C to +125°C confirming monotonic behavior. The MAX319MJA truth table and Figure 4 test circuit validate that NC opens before NO closes under all rated conditions, preventing signal shorting during transitions.
Can MAX319MJA be used in sample-and-hold circuits, and which parameter most impacts hold-step accuracy?
Yes, MAX319MJA is explicitly listed for sample-and-hold applications. Charge injection (Q < 10pC) is the dominant parameter affecting hold-step accuracy - it causes a voltage transient on the hold capacitor proportional to Q/CHOLD. The MAX319MJA's guaranteed low charge injection minimizes this error, enabling sub-12-bit accuracy in precision S/H designs without additional correction circuitry.
What is the meaning of "N.C." versus "NC" in the MAX319MJA pinout, and how should Pin 2 be handled?
In the MAX319MJA pinout, "N.C." (pin 2) means "No Connect" - it is not bonded or connected internally and must remain unconnected on the PCB. "NC" (pin 8) means "Normally Closed" - it is a functional analog terminal that conducts to COM when IN = low. Confusing these labels could lead to incorrect routing; Pin 2 must never be soldered or tied to any net in the MAX319MJA layout.
MAX319MJA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX319MJA FAQ
1.How can I place an order for MAX319MJA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX319MJA 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 MAX319MJA reliable?
The price and inventory of MAX319MJA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX319MJA is usually 5 days.
3.What payment methods are accepted for MAX319MJA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX319MJA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX319MJA?
MAX319MJA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX319MJA 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 MAX319MJA?
For technical support, including MAX319MJA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX319MJA requirements.
6.How does Aetrix verify that MAX319MJA is sourced from the original manufacturer or authorized distributors?
All MAX319MJA 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 MAX319MJA meets industry standards.
7.What is the process for return or replacement of MAX319MJA?
All MAX319MJA units undergo pre-shipment inspection (PSI). If there is an issue with MAX319MJA, 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 MAX319MJA part is unused and in its original packaging.
Return procedure for MAX319MJA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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