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Analog Devices Inc./Maxim Integrated MAX318ESA
- Part No.:
- MAX318ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX318ESA.pdf
- Description:
- IC SWITCH SPST-NOX1 35OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,163
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Product details
Overview
MAX318ESA from Maxim Integrated is a precision CMOS single-pole single-throw (SPST) analog switch with normally open (NO) configuration, 45Ω maximum on-resistance at -40°C to +85°C, <10pC charge injection, and ±2000V ESD rating. It supports rail-to-rail analog signal handling up to ±15.5V and operates from bipolar supplies (±4.5V to ±20V) or single supplies (+10V to +30V), used in military radios and test equipment where low leakage and fast switching are critical.
For engineers reviewing the MAX318ESA datasheet, MAX318ESA pinout, MAX318ESA application, or MAX318ESA equivalent, key selection criteria include guaranteed on-resistance matching (<2Ω), off-leakage <6nA at +85°C, turn-off time <145ns, and SO-8 package compatibility with industrial temperature range requirements.
Technical Context
The MAX318ESA implements a silicon-gate CMOS analog switch architecture with dedicated logic-level supply (VL) pin for TTL/CMOS compatibility and separate analog supply rails (V+, V−) enabling true rail-to-rail signal switching. Its internal design guarantees flat on-resistance (∆5Ω max over temperature) and matched channel resistance under bipolar operation.
Charge injection is minimized to 10pC via process optimization, and electrostatic discharge protection exceeds ±2000V per Method 3015.7. The device requires proper power sequencing (V+ first, then VL, V−) to avoid overstress, and supports unbalanced supplies such as +24V/−5V when V− is tied to 0V in single-supply mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On Resistance | 45Ω max at TMIN to TMAX - ensures minimal signal attenuation in precision analog paths |
| On Resistance Match | <2Ω between channels - enables accurate differential or dual-path signal routing |
| Charge Injection | <10pC - prevents voltage glitches in sample-and-hold circuits |
| Off-Leakage Current | <6nA at +85°C - maintains signal integrity in high-impedance sensor interfaces |
| Switching Speed | Turn-off <145ns - supports high-speed multiplexing in automated test systems |
| ESD Rating | >±2000V - provides robust handling during board assembly and field service |
| Analog Signal Range | ±15.5V - allows full-rail operation with ±15V supplies in instrumentation front-ends |
Pinout & Package
MAX318ESA is housed in an 8-pin SO (Small Outline) package, 3.9mm × 4.9mm body, 1.27mm pitch, with gull-wing leads and JEDEC MS-012AC compliance. Thermal resistance θJA = 170°C/W; derating 5.88mW/°C above +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog-switch common terminal - connects to signal source or load in SPST NO topology |
| 2 | N.C. | No connect - not internally bonded; must be left floating or grounded per layout guidelines |
| 3 | GND | Logic ground reference - separates digital control domain from analog signal domain |
| 4 | V+ | Analog positive supply input - sets upper rail for bidirectional analog signal swing |
| 5 | VL | Logic-level supply input - accepts 5V TTL or CMOS-compatible logic levels |
| 6 | IN | Logic-level input - active-high control signal enabling switch closure (NO path) |
| 7 | V− | Analog negative supply input - sets lower rail; tie to 0V for single-supply operation |
| 8 | NO | Analog-switch normally open terminal - completes circuit only when IN = high |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog handling | Supports ±15.5V signal swing with ±16.5V supplies - eliminates level-shifting in wide-dynamic-range systems |
| Guaranteed flat on-resistance | ∆5Ω max over full temperature and signal range - preserves gain accuracy in programmable-gain amplifiers |
| TTL/CMOS logic compatibility | VL pin accepts 5V logic regardless of analog supply - simplifies interface with microcontrollers and FPGAs |
| Low power consumption | 35µW typical - enables battery-powered portable instrumentation without thermal compromise |
| Bipolar or single-supply operation | +10V to +30V or ±4.5V to ±20V - accommodates legacy ±15V systems and modern 12V/24V industrial rails |
Applications
| Military Radios | Test Equipment |
|---|---|
Use Scenario: Signal path routing in HF/VHF transceiver front-ends requiring low distortion and high isolation. IC Role / Device Role / Timing Role: SPST analog switch selecting antenna or filter paths under microcontroller control. Use Value: 68dB off-isolation and <6nA leakage at +85°C maintain receiver sensitivity in harsh environmental conditions. |
Use Scenario: Automated multiplexing of calibration references and DUT signals in benchtop multimeters. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential connection of multiple sensors to shared ADC inputs. Use Value: 10pC charge injection and matched 2Ω on-resistance ensure measurement repeatability across channels. |
| Sample-and-Hold Circuits | Battery-Powered Systems |
Use Scenario: Acquisition-phase switching in precision data acquisition systems sampling at ≤100ksps. IC Role / Device Role / Timing Role: Low-glitch switch controlling hold capacitor charging with sub-150ns turn-off timing. Use Value: Guaranteed <10pC charge injection minimizes droop-induced error in 16-bit+ SAR ADC applications. |
Use Scenario: Power-domain isolation and sensor signal gating in handheld medical monitors. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling sleep-mode power reduction. Use Value: 35µW typical power and <0.5µA logic input current extend battery life without sacrificing signal fidelity. |
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, 1.8Ω typical RON, but rated only to +125°C and requires ≥4.5V logic supply | Preferred in high-temperature industrial PLC I/O modules where ultra-low RON outweighs extended temp range | Select ADG1419BRMZ when on-resistance below 2Ω is mandatory and system logic voltage ≥4.5V |
| TS5A3159DCKR | SPST NO, 0.75Ω typical RON, but max analog range limited to VCC − 0.3V and no bipolar supply support | Suitable for low-voltage consumer electronics (e.g., USB-C audio switches) where ±15V operation is unnecessary | Choose TS5A3159DCKR for cost-sensitive 3.3V/5V-only designs needing minimal RON and footprint |
Compared with ADG1419BRMZ and TS5A3159DCKR, MAX318ESA uniquely supports true bipolar analog operation, guaranteed charge injection <10pC, and industrial temperature range in SO-8 - making it irreplaceable in military radio and precision test equipment where signal integrity across wide voltage and temperature ranges is non-negotiable.
Availability
MAX318ESA is available at Aetrix Electronics and suitable for military radios, test equipment, sample-and-hold circuits, and battery-powered systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX318ESA 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 and mixed-signal ICs for industrial, communications, and automotive markets.
The MAX317/MAX318/MAX319 family was designed specifically for precision analog signal routing in environments demanding low leakage, low charge injection, and robust ESD tolerance - targeting defense, test & measurement, and high-reliability instrumentation.
FAQ
What is the maximum analog signal voltage range supported by the MAX318ESA?
The MAX318ESA supports an analog signal range of ±15.5V when operated with V+ = +16.5V and V− = −16.5V. This rail-to-rail capability is enabled by its 44V breakdown voltage rating and applies across the full −40°C to +85°C operating temperature range. Signal voltages beyond this range risk exceeding absolute maximum ratings and causing permanent damage.
Can the MAX318ESA operate from a single +12V supply?
Yes, the MAX318ESA supports single-supply operation from +10V to +30V. When using +12V, connect V− to 0V (ground), set VL to +5V for TTL compatibility or to +12V for CMOS logic levels, and ensure analog signals remain within 0V to +12V. Note that on-resistance increases slightly compared to bipolar operation, and dynamic performance remains fully specified.
What is the guaranteed on-resistance match between channels for the MAX318ESA?
The MAX318ESA guarantees on-resistance matching of ≤2Ω between channels at +25°C and ≤3Ω across the full −40°C to +85°C temperature range - but only under bipolar-supply operation (e.g., ±15V). This specification ensures consistent gain and offset behavior in differential or dual-path configurations where channel tracking is critical.
How does the MAX318ESA handle electrostatic discharge (ESD)?
The MAX318ESA is rated for >±2000V ESD protection per Method 3015.7, achieved through Maxim's silicon-gate process enhancements. This level of protection meets standard handling requirements for board assembly and field service without external clamping diodes, though proper grounding and handling protocols remain essential for sustained reliability.
Is the MAX318ESA pin-compatible with other devices in the MAX317/MAX318/MAX319 family?
Yes, the MAX318ESA shares identical pinout and package (8-pin SO) with MAX317ESA and MAX319ESA. However, functional differences exist: MAX317ESA is normally closed (NC), MAX318ESA is normally open (NO), and MAX319ESA is SPDT. Swapping requires verifying control logic polarity and signal routing - direct replacement is not functionally transparent.
MAX318ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX318ESA FAQ
1.How can I place an order for MAX318ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX318ESA 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 MAX318ESA reliable?
The price and inventory of MAX318ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX318ESA is usually 5 days.
3.What payment methods are accepted for MAX318ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX318ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX318ESA?
MAX318ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX318ESA 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 MAX318ESA?
For technical support, including MAX318ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX318ESA requirements.
6.How does Aetrix verify that MAX318ESA is sourced from the original manufacturer or authorized distributors?
All MAX318ESA 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 MAX318ESA meets industry standards.
7.What is the process for return or replacement of MAX318ESA?
All MAX318ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX318ESA, 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 MAX318ESA part is unused and in its original packaging.
Return procedure for MAX318ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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