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Analog Devices Inc./Maxim Integrated MAX319EPA
- Part No.:
- MAX319EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX319EPA.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,333
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Product details
Overview
MAX319EPA from Maxim Integrated is a precision SPDT CMOS analog switch with one normally open (NO) and one normally closed (NC) channel, 35Ω max on-resistance, <10pC charge injection, and rail-to-rail analog signal handling up to ±15V with ±15V supplies - used in military radios and guidance systems requiring low leakage and fast switching.
For engineers reviewing the MAX319EPA datasheet, MAX319EPA pinout, MAX319EPA application, or MAX319EPA equivalent, key selection criteria include guaranteed on-resistance matching (<2Ω), break-before-make timing (5–13ns), -40°C to +85°C operation, and compatibility with TTL/CMOS logic levels across single- or dual-supply configurations.
Technical Context
The MAX319EPA implements a monolithic silicon-gate CMOS architecture optimized for precision analog routing. Its SPDT topology enforces strict break-before-make behavior (5–13ns delay), preventing momentary shorting between NO and NC paths during state transitions.
It supports both bipolar (±4.5V to ±20V) and single-supply (10V to 30V) operation, with logic-level input (VL) independent of analog supply rails. Charge injection is tightly controlled at ≤10pC, and off-channel leakage remains below 6nA at +85°C - critical for sample-and-hold integrity and high-impedance sensor interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT (1 NO + 1 NC), break-before-make topology |
| On Resistance (max) | 35Ω - ensures minimal signal attenuation and gain error in precision instrumentation paths |
| On Resistance Match | <2Ω between channels - enables matched gain/attenuation in differential or ratiometric circuits |
| Charge Injection | <10pC - limits voltage glitch on high-impedance hold capacitors (e.g., in 16-bit SAR ADC front-ends) |
| Off Leakage (85°C) | <6nA - preserves accuracy in µA-range sensor current paths and long-duration sample-and-hold |
| Switching Speed | tON < 175ns, tOFF < 145ns - supports multiplexing at >1MHz sampling rates without settling penalty |
| Supply Range | Bipolar: ±4.5V to ±20V; Single: +10V to +30V - allows direct interface with op-amps, DACs, and legacy military power rails |
Pinout & Package
MAX319EPA is housed in an 8-pin plastic DIP package (0.300″ wide), RoHS-compliant, with through-hole mounting and standard JEDEC MO-001AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Shared signal path for both NO and NC switches; must be routed with low-inductance trace in high-frequency applications |
| 2 - NC | Normally closed analog terminal | Conducts when IN = LOW; used for default-path routing or fail-safe signal continuity |
| 3 - GND | Logic ground reference | Reference for VL and IN; must be isolated from analog ground to avoid digital noise coupling |
| 4 - V+ | Analog positive supply | Sets upper analog signal limit; supports rail-to-rail operation up to V+ − 0.5V |
| 5 - VL | Logic supply input | Independent of V+/V−; accepts 4.5V–5.5V for TTL/CMOS compatibility |
| 6 - IN | Digital control input | Inverting logic sense: LOW selects NC path, HIGH selects NO path |
| 7 - V− | Analog negative supply | Sets lower analog signal limit; required for bipolar operation; tie to GND for single-supply use |
| 8 - NO | Normally open analog terminal | Conducts when IN = HIGH; used for active-path selection or signal gating |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal range | Supports full-swing signals from V− to V+, enabling direct interface with ±12V op-amps and DACs without level-shifting |
| Guaranteed flat on-resistance | ΔRON ≤ 3Ω over full analog range - maintains consistent channel gain across ±10V input spans |
| TTL-/CMOS-compatible logic | Accepts 0.8V/2.4V thresholds with sub-0.5µA input current - eliminates need for level translators in mixed-voltage systems |
| ESD robustness | >±2000V per MIL-STD-883 Method 3015.7 - sustains handling and board assembly without protection circuitry |
| Low power consumption | 35µW typical quiescent power - suitable for battery-powered test equipment and portable avionics |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
Use Scenario: Signal path selection between RF front-end modules and baseband processors under EMI-heavy airborne environments. IC Role / Device Role / Timing Role: SPDT analog switch routing antenna diversity signals while maintaining phase coherence and low intermodulation distortion. Use Value: Break-before-make timing (5–13ns) prevents transient shorts; <6nA leakage avoids DC offset drift in IF amplifiers over temperature. | Use Scenario: Multiplexing inertial sensor outputs (gyros, accelerometers) into a central navigation processor with minimal signal degradation. IC Role / Device Role / Timing Role: Precision analog switch providing matched channel resistance and ultra-low charge injection for stable sample-and-hold acquisition. Use Value: <2Ω on-resistance match and <10pC charge injection preserve 16-bit ADC accuracy across all sensor channels. |
| Heads-Up Displays (HUD) | Test Equipment |
Use Scenario: Routing video sync and analog RGB signals from multiple sources (flight computer, terrain mapper) to HUD projection optics. IC Role / Device Role / Timing Role: High-fidelity analog switch handling 0–5V video waveforms with flat on-resistance and low crosstalk. Use Value: 85dB crosstalk and <3Ω on-resistance flatness prevent ghosting or color bleed in real-time symbology overlay. | Use Scenario: Automated test fixture switching between DUT inputs/outputs and measurement instruments (DMM, scope, signal generator). IC Role / Device Role / Timing Role: Reliable, low-leakage analog switch enabling unattended multi-point calibration sequences over extended thermal cycles. Use Value: -40°C to +85°C rating and <6nA leakage at 85°C ensure repeatability across environmental stress tests without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRUZ | SPDT, 0.6Ω RON (typ), ±15V supply, but requires external VLogic and has higher charge injection (12pC) | Better RON for low-voltage precision, but less suited for high-temp military use due to 105°C max rating | Select when ultra-low on-resistance dominates; verify charge injection impact on hold capacitor settling |
| TS5A3159DCKR | SPDT, 0.75Ω RON (typ), +1.65V to +5.5V single supply only, no bipolar support | Optimized for portable consumer gear; lacks rail-to-rail analog swing and high-temp reliability | Choose only for low-voltage, cost-sensitive commercial designs - not for industrial/military temperature or voltage ranges |
Compared with ADG1419BRUZ and TS5A3159DCKR, the MAX319EPA uniquely delivers guaranteed <2Ω channel matching, -40°C to +85°C operation with bipolar supplies, and <10pC charge injection - making it the only option qualified for precision, wide-temperature, rail-to-rail analog routing in defense electronics.
Availability
MAX319EPA is available at Aetrix Electronics and suitable for military radios, guidance and control systems, heads-up displays, and automated test equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX319EPA 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 industrial, automotive, and defense markets.
The MAX317/MAX318/MAX319 product line was engineered specifically for high-fidelity analog signal routing in mission-critical systems where leakage, charge injection, and channel matching directly impact measurement integrity.
FAQ
What is the operating temperature range for the MAX319EPA?
The MAX319EPA is rated for -40°C to +85°C operation, validated across its full electrical specification range including on-resistance, leakage, and switching speed. This extended temperature grade makes it suitable for deployment in avionics, vehicle-mounted radios, and outdoor test instrumentation where ambient conditions exceed commercial-grade limits. The MAX319EPA's performance remains guaranteed within these bounds without derating.
Does the MAX319EPA support single-supply operation?
Yes, the MAX319EPA supports single-supply operation from +10V to +30V. In this configuration, V− must be tied to GND, and VL should be set to +5V for TTL compatibility or to V+ for CMOS logic levels. The analog signal range becomes 0V to V+, preserving rail-to-rail capability. All key specs - including <35Ω RON and <10pC charge injection - are maintained under single-supply conditions per the datasheet's "Single Supply" characterization tables.
What is the logic polarity of the IN pin on the MAX319EPA?
The IN pin on the MAX319EPA uses inverting logic polarity: a LOW input (≤0.8V) connects the COM terminal to the NC terminal, while a HIGH input (≥2.4V) connects COM to the NO terminal. This behavior is explicitly confirmed in the truth table and functional diagrams of the MAX319EPA datasheet. No external inversion is needed - the logic sense is intrinsic to the MAX319EPA's internal gate structure.
How does the MAX319EPA handle overvoltage conditions on analog pins?
Per the MAX319EPA datasheet, analog terminals (COM, NO, NC) tolerate voltages from (V− − 2V) to (V+ + 2V), with absolute maximum ratings of +44V on V+ and ±2V beyond rails on signal pins. Exceeding these limits risks permanent damage. For overvoltage protection, Maxim recommends adding two series diodes on V+ and V− pins - reducing usable analog range by ~1V but preserving low RON and leakage. This method is validated in Figure 1 of the MAX319EPA application notes.
Is the MAX319EPA pin-compatible with other devices in the MAX317/MAX318/MAX319 family?
Yes, the MAX319EPA shares identical pinout and package (8-pin DIP) with MAX317EPA and MAX318EPA - all three have COM on Pin 1, GND on Pin 3, V+ on Pin 4, VL on Pin 5, IN on Pin 6, V− on Pin 7, and signal terminals (NC/NO) on Pins 2 and 8. However, their switch configurations differ: MAX317EPA is NC-only, MAX318EPA is NO-only, and MAX319EPA is SPDT. Swapping them requires verifying control logic and signal routing alignment in the schematic.
MAX319EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm (Max)
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 175ns, 145ns
- -3db Bandwidth:
- -
- Charge Injection:
- 3pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX319EPA FAQ
1.How can I place an order for MAX319EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX319EPA 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 MAX319EPA reliable?
The price and inventory of MAX319EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX319EPA is usually 5 days.
3.What payment methods are accepted for MAX319EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX319EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX319EPA?
MAX319EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX319EPA 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 MAX319EPA?
For technical support, including MAX319EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX319EPA requirements.
6.How does Aetrix verify that MAX319EPA is sourced from the original manufacturer or authorized distributors?
All MAX319EPA 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 MAX319EPA meets industry standards.
7.What is the process for return or replacement of MAX319EPA?
All MAX319EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX319EPA, 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 MAX319EPA part is unused and in its original packaging.
Return procedure for MAX319EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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