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Analog Devices Inc./Maxim Integrated MAX319CPA
- Part No.:
- MAX319CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX319CPA.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
MAX319CPA from Maxim Integrated is a precision SPDT CMOS analog switch with one normally open (NO) and one normally closed (NC) channel, designed for rail-to-rail signal routing in precision instrumentation and military-grade systems. It delivers <35Ω max on-resistance, <10pC charge injection, <6nA off-leakage at +85°C, and 175ns max turn-on time under ±15V dual supply. It operates across 0°C to +70°C in 8-pin plastic DIP packaging.
For engineers reviewing the MAX319CPA datasheet, MAX319CPA pinout, MAX319CPA application, or MAX319CPA equivalent, key selection criteria include guaranteed matched on-resistance (<2Ω), break-before-make timing (5–13ns), bipolar/single-supply flexibility (+10V to +30V or ±4.5V to ±20V), and ESD tolerance >±2000V - all critical for sample-and-hold, guidance control, and battery-powered test equipment design.
Technical Context
The MAX319CPA implements a monolithic silicon-gate CMOS architecture optimized for low distortion and minimal signal perturbation. Its SPDT topology features independent NO and NC paths sharing a common COM terminal, with TTL/CMOS-compatible logic input referenced to VL and isolated analog supplies (V+, V−).
It guarantees flat on-resistance (∆3Ω max) over full analog signal range (±15V with ±15V supplies), matched channel resistance (<2Ω at +25°C), and sub-10pC charge injection - enabling high-fidelity sampling in precision data acquisition without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT (1× NO + 1× NC), single-pole double-throw with break-before-make timing |
| On Resistance (max) | 35Ω - ensures minimal voltage drop and gain error in signal-path applications up to ±15V |
| On Resistance Match | <2Ω between NO/NC channels - enables precise differential or ratiometric measurements |
| Charge Injection | <10pC - limits voltage glitch on sampled capacitors, critical for 12-bit+ sample-and-hold accuracy |
| Off-Leakage Current | <6nA at +85°C - preserves long-time constant integrity in high-impedance sensor interfaces |
| Supply Range | +10V to +30V (single) or ±4.5V to ±20V (dual) - supports rail-to-rail analog signal handling up to ±15.5V |
| ESD Rating | >±2000V (HBM) - provides robustness during board handling and system integration |
Pinout & Package
MAX319CPA is housed in an 8-pin plastic DIP (0.300″ wide) package with through-hole mounting and industry-standard footprint. Pin 1 is COM (common analog terminal); pins 2 and 8 are NC and NO respectively; pin 3 is GND (logic ground); pins 4 and 7 are V+ and V− (analog supplies); pin 5 is VL (logic supply); pin 6 is IN (TTL/CMOS-compatible control input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Shared connection point for both NO and NC switches; carries full analog signal current |
| 2 - N.C. | No-connect terminal | Not internally connected; must be left unconnected per datasheet |
| 3 - GND | Logic ground reference | Reference for VL and digital input; separate from analog V− to minimize noise coupling |
| 4 - V+ | Analog positive supply | Bias for internal switch transistors; sets upper analog signal limit (up to +44V absolute max) |
| 5 - VL | Logic supply input | Defines logic threshold (2.4V high / 0.8V low); can be tied to V+ for CMOS or +5V for TTL compatibility |
| 6 - IN | Digital control input | Inverts logic sense: logic low connects COM to NC; logic high connects COM to NO |
| 7 - V− | Analog negative supply | Bias for internal switch transistors; sets lower analog signal limit (down to −44V absolute max) |
| 8 - NC | Normally closed analog terminal | Connected to COM when IN = low; breaks before NO closes during transition (5–13ns) |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports ±15.5V signal swing with ±16.5V supplies - eliminates level-shifting in wide-dynamic-range systems |
| Guaranteed break-before-make | 5–13ns interval prevents momentary shorting between NO and NC paths - essential for fault-tolerant switching |
| Matched on-resistance tracking | <2Ω match at +25°C and <3Ω over full temperature range - maintains channel balance in differential configurations |
| Ultra-low charge injection | <10pC - reduces settling error in capacitor-coupled circuits, enabling sub-1LSB error in 14-bit SAR ADC front-ends |
| Low power consumption | 35µW typical quiescent power - suitable for always-on battery-powered telemetry and portable test gear |
Applications
| Sample-and-Hold Circuits | Guidance and Control Systems |
|---|---|
Use Scenario: Capturing fast transient signals from inertial sensors or radar receivers with minimal droop and glitch. IC Role / Device Role / Timing Role: Precision SPDT switch selects between hold capacitor and signal source; break-before-make prevents charge sharing. Use Value: <10pC charge injection and <6nA leakage preserve capacitor voltage for >10ms hold time at 12-bit accuracy. |
Use Scenario: Multiplexing feedback signals from multiple gyros or accelerometers into a central flight controller. IC Role / Device Role / Timing Role: Analog multiplexer routing sensor outputs while maintaining signal fidelity and isolation between channels. Use Value: 68dB off-isolation and matched on-resistance ensure cross-channel crosstalk remains below −70dB in multi-axis stabilization loops. |
| Heads-Up Displays (HUD) | Test Equipment Signal Routing |
Use Scenario: Switching video sync pulses and analog intensity signals in avionics HUD drivers without timing skew or amplitude distortion. IC Role / Device Role / Timing Role: High-speed SPDT switch toggling between primary and backup display sources with deterministic propagation delay. Use Value: 175ns max turn-on and 145ns max turn-off enable clean switching at video line rates up to 15kHz. |
Use Scenario: Reconfiguring signal paths in automated test equipment (ATE) for DUT stimulus/response measurement sequences. IC Role / Device Role / Timing Role: Programmable analog switch matrix element enabling flexible I/O routing without relay wear-out or thermal drift. Use Value: 35Ω max on-resistance and flat RON vs. voltage ensure consistent gain and bandwidth across 0–12V signal range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG201AKRZ-REEL7 | Quad SPST, 60Ω max RON, no guaranteed break-before-make, 25pC charge injection | Higher on-resistance and charge injection limit use in precision sampling; better suited for general-purpose multiplexing | Select when needing quad configuration and cost sensitivity outweighs precision requirements |
| TS5A23157DCUR | Single-pole double-throw, 0.9Ω typical RON, 3.3V-only supply, 15pC charge injection, no bipolar support | Optimized for low-voltage portable systems; lacks rail-to-rail capability and high-temp leakage specs | Prefer for battery-powered consumer devices where supply headroom and power budget constrain design |
Compared with ADG201AKRZ-REEL7 and TS5A23157DCUR, the MAX319CPA uniquely combines guaranteed break-before-make timing, bipolar supply operation, and sub-10pC charge injection - making it irreplaceable in military radios and high-accuracy sample-and-hold systems requiring ±15V signal integrity.
Availability
MAX319CPA is available at Aetrix Electronics and suitable for guidance and control systems, heads-up displays, and military radio applications requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for MAX319CPA 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, automotive, and aerospace applications.
The MAX317/MAX318/MAX319 family was engineered specifically for precision analog signal routing in environments requiring low distortion, high reliability, and guaranteed parametric performance across temperature - especially in defense and test instrumentation.
FAQ
What is the maximum analog signal voltage the MAX319CPA can handle?
The MAX319CPA supports rail-to-rail analog signal handling up to ±15.5V when operated with ±16.5V supplies. Its absolute maximum ratings allow V+ to reach +44V and V− to −44V relative to each other, but usable signal swing is constrained by supply voltages. For example, with ±15V supplies, the guaranteed analog-signal range is ±15V; exceeding this risks increased on-resistance variation and leakage. The MAX319CPA datasheet specifies VCOM, VNO, and VNC limits under defined conditions - always verify operating margins against actual supply rails and temperature.
Does the MAX319CPA require separate logic and analog grounds?
No, the MAX319CPA does not require separate logic and analog grounds. Pin 3 (GND) serves as the sole logic ground reference for VL and the IN input, and it must be connected to the system's main ground plane. However, best practice dictates minimizing noise coupling by routing GND traces away from high-current analog return paths and avoiding shared vias between digital and analog sections. The device's internal isolation between logic (VL/IN) and analog (V+/V−/COM/NO/NC) domains eliminates need for split-ground partitioning - unlike some high-speed or RF switches.
Can the MAX319CPA operate from a single +12V supply?
Yes, the MAX319CPA supports single-supply operation from +10V to +30V. When using +12V, connect V− to ground (0V), set VL to +5V for TTL compatibility or tie VL to V+ for CMOS logic levels, and ensure the analog signal stays within 0V to +12V. Note that on-resistance rises (up to 100Ω max) and leakage increases slightly versus bipolar operation, and break-before-make timing degrades to ~60ns. These trade-offs are documented in the "Single Supply" section of the MAX319CPA datasheet and remain acceptable for many test equipment and PBX applications.
What is the purpose of the N.C. pin (Pin 2) on the MAX319CPA?
Pin 2 on the MAX319CPA is labeled "N.C." (No Connect) and is not internally connected to any circuitry - it must remain unconnected on the PCB. This differs from Pin 8 (NC, Normally Closed), which is a functional analog terminal. The N.C. pin exists for package compatibility across the MAX317/MAX318/MAX319 family: MAX317 uses Pin 2 for NC, MAX318 uses Pin 8 for COM, and MAX319 reassigns Pin 2 as no-connect to accommodate its unique SPDT pinout. Leaving Pin 2 floating avoids unintended parasitic coupling; soldering or routing to ground or supply violates the datasheet and may degrade ESD performance.
How does temperature affect on-resistance matching in the MAX319CPA?
The MAX319CPA guarantees on-resistance match between its NO and NC channels to <2Ω at +25°C and <3Ω across the full 0°C to +70°C operating range. This specification is measured under bipolar supply conditions (e.g., ±15V) and reflects worst-case tracking - meaning the absolute difference between RON_NO and RON_NC will not exceed 3Ω anywhere in the temperature range. At extremes (0°C or +70°C), individual channel RON may rise to 45Ω, but their delta remains tightly bounded. This stability is critical for ratiometric measurements and differential signal conditioning where channel imbalance directly impacts accuracy.
MAX319CPA 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX319CPA FAQ
1.How can I place an order for MAX319CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX319CPA 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 MAX319CPA reliable?
The price and inventory of MAX319CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX319CPA is usually 5 days.
3.What payment methods are accepted for MAX319CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX319CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX319CPA?
MAX319CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX319CPA 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 MAX319CPA?
For technical support, including MAX319CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX319CPA requirements.
6.How does Aetrix verify that MAX319CPA is sourced from the original manufacturer or authorized distributors?
All MAX319CPA 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 MAX319CPA meets industry standards.
7.What is the process for return or replacement of MAX319CPA?
All MAX319CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX319CPA, 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 MAX319CPA part is unused and in its original packaging.
Return procedure for MAX319CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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