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Analog Devices Inc./Maxim Integrated MAX319CSA+
- Part No.:
- MAX319CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX319CSA+.pdf
- Description:
- IC SWITCH SPDT X 1 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,252
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Product details
Overview
MAX319CSA+ 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 ±44V breakdown voltage. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply, enabling rail-to-rail signal switching in military radios and test equipment.
For engineers reviewing the MAX319CSA+ datasheet, MAX319CSA+ pinout, MAX319CSA+ application, or MAX319CSA+ equivalent, key selection criteria include guaranteed on-resistance matching (<2Ω), break-before-make timing (5–13ns), leakage <6nA at +85°C, and SO-8 package compatibility with automated PCB assembly.
Technical Context
The MAX319CSA+ implements a dual-channel SPDT architecture with independent NO and NC paths controlled by a single TTL/CMOS-compatible logic input. Its silicon-gate process ensures flat on-resistance (∆3Ω max) over full analog signal range and low distortion via <10pC charge injection.
Bipolar operation (±4.5V to ±20V) enables symmetric rail-to-rail analog handling up to ±15.5V, while single-supply mode (+10V to +30V) requires V− tied to GND and VL referenced to V+ for CMOS logic compatibility. Break-before-make timing prevents signal shorting during transition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On Resistance | 35Ω max at +25°C; ensures minimal signal attenuation and voltage drop in precision analog paths. |
| On Resistance Match | <2Ω between NO and NC channels; critical for matched gain/attenuation in differential or redundant signal routing. |
| Charge Injection | <10pC; limits voltage glitch on high-impedance nodes like sample-and-hold capacitors. |
| Off-Leakage Current | <6nA at +85°C; preserves signal integrity in high-Z sensor interfaces and battery-powered systems. |
| Break-Before-Make Time | 5–13ns; eliminates momentary short-circuit risk when switching between NC and NO paths. |
| Supply Range | ±4.5V to ±20V (bipolar) or +10V to +30V (single); supports industrial, military, and telecom voltage rails. |
| ESD Rating | >±2000V per Method 3015.7; enhances robustness in handling and board-level ESD events. |
Pinout & Package
MAX319CSA+ uses an 8-pin SO (Small Outline) package with 150-mil width, compliant with JEDEC MS-012. Pin 1 is COM (common terminal), pin 2 is NO (normally open), pin 3 is GND (logic ground), pin 4 is V+ (positive analog supply), pin 5 is VL (logic supply), pin 6 is IN (logic control input), pin 7 is V− (negative analog supply), and pin 8 is NC (normally closed).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Shared signal path for both NO and NC switches; connects to source or load in SPDT configuration. |
| 2 - NO | Normally open analog terminal | Open-circuit path until logic HIGH applied; used for default-off signal routing or enable functions. |
| 3 - GND | Logic ground reference | Reference for VL and logic input thresholds; must be low-impedance to minimize noise coupling. |
| 4 - V+ | Positive analog supply | Sets upper analog signal limit; supports rail-to-rail operation up to V+ − 2V per absolute max rating. |
| 5 - VL | Logic supply input | Defines logic threshold (0.8V/2.4V); can be tied to V+ for CMOS compatibility or +5V for TTL. |
| 6 - IN | Logic control input | Inverts function: LOW selects NC path, HIGH selects NO path per truth table. |
| 7 - V− | Negative analog supply | Sets lower analog signal limit; required for bipolar operation; tie to GND for single-supply use. |
| 8 - NC | Normally closed analog terminal | Closed-circuit path until logic HIGH applied; provides fail-safe or default-on signal continuity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog handling | Supports signals from V− to V+ (±15.5V typical), eliminating level-shifting in wide-dynamic-range systems. |
| Guaranteed flat on-resistance | ∆3Ω max variation across full analog input range ensures linear gain/attenuation in instrumentation amplifiers. |
| TTL/CMOS logic compatibility | Accepts standard 0.8V/2.4V thresholds; VL pin allows flexible interface to microcontrollers or FPGAs without level shifters. |
| Low power consumption | 35µW typical supply current enables integration into battery-powered portable test gear and avionics. |
| High off-isolation | 68dB at 1MHz minimizes crosstalk between active and inactive channels in multi-signal routing applications. |
Applications
| Sample-and-Hold Circuits | Guidance and Control Systems |
|---|---|
Use Scenario: Capturing precise analog sensor outputs (e.g., inertial measurement unit voltages) before ADC conversion. IC Role / Device Role / Timing Role: SPDT switch routes sampled signal to hold capacitor while isolating input source; break-before-make prevents discharge glitches. Use Value: <10pC charge injection avoids hold-node voltage error; <6nA leakage preserves sample integrity for >1ms hold times. | Use Scenario: Redundant signal path selection in flight control computers where fail-safe continuity is mandatory. IC Role / Device Role / Timing Role: NC path maintains default actuator command link; NO path engages backup controller upon fault detection. Use Value: Guaranteed <2Ω on-resistance match ensures identical gain in primary/backup paths; ±44V breakdown withstands transients in aircraft power buses. |
| Heads-Up Displays | Test Equipment |
Use Scenario: Switching video sync pulses and RGB signals between multiple display sources in cockpit HUDs. IC Role / Device Role / Timing Role: High-speed SPDT toggles between primary and secondary graphics processors with sub-150ns switching. Use Value: 145ns max turn-off time meets real-time video timing budgets; 85dB crosstalk rejection prevents ghosting between channels. | Use Scenario: Automated signal routing in benchtop oscilloscopes and signal analyzers during self-test or calibration sequences. IC Role / Device Role / Timing Role: Precision analog multiplexer selects reference voltages, calibration standards, or DUT inputs under microcontroller control. Use Value: 35Ω max on-resistance ensures <0.1% gain error in 10kΩ test paths; SO-8 package supports high-density PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRMZ | Single-supply only (+5V to +36V); no bipolar support; 4.7Ω typical RON; 12ns tD. | Lacks ±15V operation needed for legacy military radios; better for modern single-rail industrial PLCs. | Select when ultra-low on-resistance and fast switching outweigh bipolar supply requirement. |
| TS5A23157DCUR | SPDT, 0.9Ω typical RON, but only ±5.5V max analog range; 3.3V logic only; no guaranteed flatness spec. | Suitable for low-voltage portable medical devices, not for ±12V test equipment or avionics. | Choose for cost-sensitive consumer electronics where rail-to-rail ±15V capability is unnecessary. |
Compared with ADG1419BRMZ and TS5A23157DCUR, MAX319CSA+ uniquely supports true bipolar ±20V operation with guaranteed on-resistance flatness and <10pC charge injection-making it irreplaceable in high-precision, wide-supply military and aerospace analog routing.
Availability
MAX319CSA+ is available at Aetrix Electronics and suitable for guidance and control systems, test equipment, and heads-up displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX319CSA+ 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 communications applications.
The MAX317/MAX318/MAX319 family was engineered specifically for precision analog signal routing in environments requiring low distortion, high reliability, and wide supply flexibility-including military radios and avionics.
FAQ
What is the maximum analog signal voltage range supported by MAX319CSA+?
MAX319CSA+ supports analog signals from V− to V+, with absolute maximum ratings of (V− − 2V) to (V+ + 2V). In bipolar operation at ±15V supplies, it handles ±15.5V signals. In single-supply mode (+12V, V− = GND), the range is 0V to +12V. The 44V breakdown voltage enables robust rail-to-rail performance across diverse power architectures.
Does MAX319CSA+ require external protection diodes for overvoltage conditions?
MAX319CSA+ does not require external protection diodes if proper power-supply sequencing is followed: V+ first, then VL, V−, and logic inputs. If sequencing cannot be guaranteed, two small-signal diodes in series with V+ and V− pins reduce analog range by 1V but preserve low RON and leakage specs. This protection method is validated in Maxim's Application Note for the MAX319CSA+.
How does the logic input polarity affect switching behavior in MAX319CSA+?
In MAX319CSA+, a logic LOW (≤0.8V) at the IN pin connects COM to NC (normally closed path), while a logic HIGH (≥2.4V) connects COM to NO (normally open path). This inverting logic sense is fixed and documented in the truth table; no internal configuration registers exist. VL must be set to match the driving logic family (e.g., +5V for TTL, V+ for CMOS).
Can MAX319CSA+ operate with unbalanced supplies such as +24V and −5V?
Yes, MAX319CSA+ supports unbalanced supplies including +24V/−5V, provided the difference between V+ and V− does not exceed +44V and each supply remains within its absolute maximum rating (V+ ≤ V− + 44V, GND ≤ V− + 25V). Analog signal range is limited to V− to V+, so +24V/−5V yields a −5V to +24V span-ideal for hybrid industrial control interfaces.
What is the thermal performance of MAX319CSA+ in SO-8 package at +85°C ambient?
In SO-8 package, MAX319CSA+ has a thermal resistance θJA of 170°C/W. At +85°C ambient and 35µW typical power dissipation, junction temperature rise is negligible (<0.006°C), ensuring stable parametric performance. Derating begins above +70°C at 5.88mW/°C; maximum continuous power at +85°C is 471mW − (15°C × 5.88mW/°C) = 383mW-well above operational needs.
MAX319CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX319CSA+ FAQ
1.How can I place an order for MAX319CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX319CSA+ 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 MAX319CSA+ reliable?
The price and inventory of MAX319CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX319CSA+ is usually 5 days.
3.What payment methods are accepted for MAX319CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX319CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX319CSA+?
MAX319CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX319CSA+ 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 MAX319CSA+?
For technical support, including MAX319CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX319CSA+ requirements.
6.How does Aetrix verify that MAX319CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX319CSA+ 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 MAX319CSA+ meets industry standards.
7.What is the process for return or replacement of MAX319CSA+?
All MAX319CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX319CSA+, 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 MAX319CSA+ part is unused and in its original packaging.
Return procedure for MAX319CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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