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Analog Devices Inc./Maxim Integrated MAX318CSA+T
- Part No.:
- MAX318CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX318CSA+T.pdf
- Description:
- IC SWITCH SPST-NOX1 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,460
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Product details
Overview
MAX318CSA+T from Maxim Integrated is a precision CMOS single-pole single-throw (SPST) analog switch with normally open (NO) configuration, 35Ω maximum on-resistance, <10pC charge injection, and ±2000V ESD rating. It operates from bipolar supplies (±4.5V to ±20V) or single supply (+10V to +30V), enabling rail-to-rail analog signal switching in test equipment and guidance systems.
For engineers reviewing the MAX318CSA+T datasheet, MAX318CSA+T pinout, MAX318CSA+T application, or MAX318CSA+T equivalent, key selection criteria include guaranteed on-resistance matching (<2Ω), flat on-resistance over signal range (∆3Ω max), low leakage (<6nA at +85°C), and fast switching (tON < 175ns, tOFF < 145ns).
Technical Context
The MAX318CSA+T implements a silicon-gate CMOS transmission gate architecture optimized for low distortion and minimal signal-dependent resistance variation. Its design guarantees matched on-resistance between channels and flat RON across the full analog input range (±15V with ±15V supplies), critical for precision sample-and-hold and multiplexing.
It supports TTL/CMOS logic compatibility via dedicated VL pin, accepts independent analog supply rails (V+, V−), and features electrostatic discharge protection exceeding ±2000V per Method 3015.7. The device is specified for 0°C to +70°C operation in an 8-pin SO package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On Resistance | 35Ω max at +25°C; ensures minimal voltage drop and signal attenuation in precision analog paths. |
| On Resistance Match | <2Ω between channels; enables accurate differential or ratiometric measurements without calibration. |
| Charge Injection | <10pC; limits voltage glitch on sampled capacitors, preserving accuracy in sample-and-hold circuits. |
| Off-Leakage Current | <6nA at +85°C; prevents signal corruption in high-impedance sensor interfaces and battery-powered systems. |
| Switching Speed | tON < 175ns, tOFF < 145ns; supports high-throughput data acquisition and real-time control loops. |
| Analog Signal Range | ±15V with ±15V supplies; allows rail-to-rail handling of industrial and military-grade signal levels. |
| ESD Rating | >±2000V per Method 3015.7; provides robust handling during board assembly and field service. |
Pinout & Package
MAX318CSA+T is housed in an 8-pin narrow SO (Small Outline) package, 3.9mm × 4.9mm body, 1.27mm lead pitch, JEDEC MS-012AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog-switch common terminal - connects to load or signal path requiring controlled connection. |
| 2 | N.C. | No connect - not internally bonded; must be left floating or tied to GND per layout best practice. |
| 3 | GND | Logic ground reference - establishes 0V reference for IN and VL inputs; requires low-impedance PCB plane. |
| 4 | V+ | Analog positive supply input - sets upper rail for analog signal range; supports up to +44V absolute max. |
| 5 | VL | Logic-level positive supply - powers internal logic; configurable for TTL (5V) or CMOS (V+) compatibility. |
| 6 | IN | Digital control input - active-high logic; switches COM–NO path when high (typically >2.4V). |
| 7 | V− | Analog negative supply input - sets lower rail for analog signal range; supports down to −44V absolute min. |
| 8 | NO | Analog-switch normally open terminal - connects to COM only when IN is high; isolated otherwise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports ±15V signal swing with ±15V supplies - eliminates level-shifting in wide-dynamic-range systems. |
| Guaranteed flat on-resistance | ∆3Ω max over full analog range - maintains consistent gain and linearity in precision instrumentation. |
| Low power consumption | 35µW typical - extends battery life in portable test gear and remote sensing nodes. |
| TTL/CMOS logic compatibility | Independent VL pin allows seamless interface with mixed-voltage digital controllers (3.3V or 5V). |
| Bipolar and single-supply operation | Operates from ±4.5V to ±20V or +10V to +30V - simplifies power architecture in legacy and new designs. |
Applications
| Test Equipment Signal Routing | Military Radio Channel Switching |
|---|---|
|
Use Scenario: Automated test systems route multiple sensor signals to shared ADCs or signal analyzers under software control. IC Role / Device Role / Timing Role: MAX318CSA+T acts as a low-distortion, low-leakage SPST switch selecting analog inputs prior to digitization. Use Value: 35Ω max RON and <10pC charge injection preserve measurement fidelity across temperature and signal range. |
Use Scenario: Secure voice/data radios require rapid, glitch-free switching between antenna paths or modulation stages. IC Role / Device Role / Timing Role: MAX318CSA+T serves as a high-reliability RF front-end switch enabling channel reconfiguration without signal interruption. Use Value: ±2000V ESD rating and −40°C to +85°C extended variants (e.g., MAX318ESA) ensure field survivability. |
| Guidance System Sensor Multiplexing | Battery-Powered Heads-Up Display (HUD) |
|
Use Scenario: Inertial navigation units multiplex gyro, accelerometer, and magnetometer outputs into a central processor. IC Role / Device Role / Timing Role: MAX318CSA+T isolates high-impedance sensor outputs during non-sampling intervals to prevent crosstalk. Use Value: <6nA off-leakage at +85°C prevents drift in microamp-level sensor bias networks. |
Use Scenario: Automotive or avionics HUDs switch between ambient light sensors, display drivers, and calibration references. IC Role / Device Role / Timing Role: MAX318CSA+T enables low-power, rail-to-rail analog control of brightness and contrast feedback loops. Use Value: 35µW typical power and single-supply +12V operation reduce quiescent current in energy-constrained displays. |
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 SPST NO switch, 0.9Ω typical RON, but requires ≥±4.5V dual supply; no VL pin - logic referenced to V+. | Better RON for low-voltage precision, but lacks independent logic supply; unsuitable where TTL/CMOS voltage translation is needed. | Select ADG1419BRMZ only when ultra-low on-resistance dominates and logic supply flexibility is unnecessary. |
| TS5A23157DCKR | SPST NO, 0.9Ω typical RON, 5V single supply only, 1.65V–5.5V logic compatible, but max analog range limited to 0–5.5V. | Optimized for 3.3V/5V portable electronics; cannot support ±15V or rail-to-rail industrial signals like MAX318CSA+T. | Choose TS5A23157DCKR for cost-sensitive, low-voltage consumer designs - not for wide-range or military-grade use. |
Compared with ADG1419BRMZ and TS5A23157DCKR, the MAX318CSA+T uniquely combines rail-to-rail analog capability, independent VL logic supply, and guaranteed parameter matching - making it irreplaceable in high-fidelity, multi-supply test and defense systems.
Availability
MAX318CSA+T is available at Aetrix Electronics and suitable for test equipment, military radio, guidance system, and battery-powered heads-up display applications requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for MAX318CSA+T 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and defense markets.
The MAX317/MAX318/MAX319 family was designed specifically for precision analog signal routing in environments demanding low distortion, high reliability, and guaranteed parametric performance across temperature and supply variations.
FAQ
What is the maximum analog signal voltage range supported by the MAX318CSA+T?
The MAX318CSA+T supports a maximum analog signal range of ±15V when operated with ±15V supplies. Its absolute maximum ratings allow V+ up to +44V and V− down to −44V, but the usable linear signal range is constrained by the applied supply rails. For example, with +12V/0V single supply, the analog range is 0V to +12V.
Does the MAX318CSA+T require separate logic and analog ground connections?
No - the MAX318CSA+T uses a single GND pin (Pin 3) for logic reference. The VL pin (Pin 5) sets the logic high threshold, while V+ and V− define the analog rails. Proper PCB layout requires a low-impedance ground plane connecting GND, V−, and system ground to minimize noise coupling into sensitive analog paths.
Can the MAX318CSA+T operate from a single +5V supply?
No - the MAX318CSA+T requires minimum supply voltages of ±4.5V for dual supply or +10V for single supply. A +5V-only supply falls below its operational specification and will not reliably turn the switch on or maintain specified RON and leakage performance. Use TS5A23157DCKR or similar 5V-optimized switches instead.
What does "N.C." on Pin 2 mean for the MAX318CSA+T?
"N.C." stands for "No Connect" - Pin 2 is not bonded to the die and has no internal connection. It must be left unconnected (floating) on the PCB. Do not tie it to GND, V+, or any other node, as this may introduce parasitic capacitance or risk latch-up in adjacent circuitry.
How is charge injection specified for the MAX318CSA+T, and why does it matter?
The MAX318CSA+T guarantees charge injection of less than 10pC, measured with VGEN = 0V and CL = 10nF. This parameter directly impacts sample-and-hold accuracy: injected charge causes voltage glitches on hold capacitors, leading to acquisition errors. Low charge injection ensures sub-LSB error in 14-bit+ data acquisition systems.
MAX318CSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- 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
MAX318CSA+T FAQ
1.How can I place an order for MAX318CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX318CSA+T 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 MAX318CSA+T reliable?
The price and inventory of MAX318CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX318CSA+T is usually 5 days.
3.What payment methods are accepted for MAX318CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX318CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX318CSA+T?
MAX318CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX318CSA+T 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 MAX318CSA+T?
For technical support, including MAX318CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX318CSA+T requirements.
6.How does Aetrix verify that MAX318CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX318CSA+T 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 MAX318CSA+T meets industry standards.
7.What is the process for return or replacement of MAX318CSA+T?
All MAX318CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX318CSA+T, 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 MAX318CSA+T part is unused and in its original packaging.
Return procedure for MAX318CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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