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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:4,730
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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, 35Ω maximum on-resistance, <10pC charge injection, and ±44V breakdown voltage. 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 military radios.
For engineers reviewing the MAX318ESA+ datasheet, MAX318ESA+ pinout, MAX318ESA+ application, or MAX318ESA+ equivalent, key selection criteria include guaranteed on-resistance matching (<2Ω), low leakage (<6nA at +85°C), fast switching (tON < 175ns), ESD tolerance (>±2000V), and SO-8 package compatibility with industrial temperature range (-40°C to +85°C).
Technical Context
The MAX318ESA+ implements a silicon-gate CMOS transmission gate architecture optimized for low distortion and minimal signal-dependent on-resistance variation. Its design guarantees flat on-resistance (∆3Ω max) over the full analog signal range and matched channel resistance within 2Ω - both specified only under bipolar-supply operation.
It features TTL/CMOS-compatible logic inputs (VINH = 2.4V, VINL = 0.8V), dual- or single-supply flexibility, and integrated electrostatic discharge protection exceeding ±2000V per Method 3015.7. The device lacks internal level-shifting circuitry, requiring VL tied to V+ for CMOS logic or +5V for TTL compatibility in single-supply mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On Resistance | ≤35Ω max at TA = –40°C to +85°C; ensures minimal voltage drop and power loss in signal paths up to ±12.5V. |
| On Resistance Match | ≤2Ω between channels at +25°C; critical for precision multiplexing and differential signal integrity. |
| Charge Injection | ≤10pC; limits voltage glitch on sampled nodes in precision sample-and-hold circuits. |
| Off-Leakage Current | ≤6nA at +85°C; preserves accuracy in high-impedance sensor interfaces and battery-powered systems. |
| Switching Speed | tON ≤175ns, tOFF ≤145ns at +25°C; supports >5MHz signal routing in communications and test instrumentation. |
| Supply Range | Bipolar: ±4.5V to ±20V; single: +10V to +30V; enables rail-to-rail analog signal handling without clipping. |
| ESD Rating | >±2000V per Method 3015.7; provides robust handling during board assembly and field operation. |
Pinout & Package
MAX318ESA+ is housed in an 8-pin SO (Small Outline) package, 150-mil width, with standard JEDEC MS-012AC dimensions (5.00 × 4.00 × 1.75 mm). Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | COM | Analog-switch common terminal - connects to load or signal source; bidirectional current path. |
| 2 | N.C. | No connect - not internally bonded; must remain unconnected on PCB. |
| 3 | GND | Logic ground reference - ties digital control logic to system ground plane. |
| 4 | V+ | Analog positive supply input - sets upper rail for analog signal range; max 44V above V–. |
| 5 | VL | Logic-level positive supply - set to +5V for TTL compatibility or V+ for CMOS logic thresholds. |
| 6 | IN | Digital control input - active-high logic controls NO switch state (IN = high → COM ↔ NO closed). |
| 7 | V– | Analog negative supply input - sets lower rail; must be ≤ V+ – 44V; connect to 0V in single-supply mode. |
| 8 | NO | Normally open analog terminal - forms switched path with COM only when IN is high. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V– to V+, enabling full utilization of supply rails in ±15V or +24V systems. |
| Guaranteed on-resistance flatness | ∆RON ≤3Ω max over full analog range; maintains consistent gain and linearity in precision amplifiers. |
| Low charge injection | ≤10pC ensures sub-1LSB error in 14-bit+ data acquisition when driving 10nF sampling capacitors. |
| TTL/CMOS logic compatibility | Accepts standard 0.8V/2.4V logic thresholds without external level shifters - reduces BOM count. |
| High-voltage breakdown rating | 44V max between V+ and V– allows safe operation with ±20V supplies and transient margin in industrial environments. |
Applications
| Test Equipment Signal Routing | Military Radio Front-End Switching |
|---|---|
|
Use Scenario: Multiplexing calibrated reference voltages and sensor inputs in automated test equipment (ATE) with <10ppm accuracy requirements. IC Role / Device Role / Timing Role: SPST analog switch isolating DUT signal paths during calibration cycles; controlled via FPGA GPIO with <200ns timing margin. Use Value: 2Ω on-resistance match and <3Ω flatness preserve absolute voltage accuracy across channels; <6nA leakage prevents drift in µA-range bias networks. |
Use Scenario: RF front-end antenna switching and IF signal gating in ruggedized HF/VHF transceivers operating from –40°C to +85°C. IC Role / Device Role / Timing Role: High-isolation analog switch enabling rapid transmit/receive mode transitions; driven by hardened microcontroller I/O. Use Value: >68dB off-isolation at 1MHz blocks LO feedthrough; ±2000V ESD withstand protects against field-deployed static discharge events. |
| Sample-and-Hold Circuit Switch | Battery-Powered Guidance System |
|
Use Scenario: Sampling high-impedance piezoelectric sensor outputs in inertial measurement units (IMUs) with 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Low-charge-injection switch connecting sensor to hold capacitor; triggered synchronously with ADC conversion start. Use Value: ≤10pC charge injection limits hold-step error to <0.5mV on 10nF capacitors - sufficient for 16-bit resolution at 10V full scale. |
Use Scenario: Power-gating analog front-ends and sensor interfaces in portable guidance modules powered by Li-ion batteries (3.0–4.2V). IC Role / Device Role / Timing Role: Low-leakage analog switch enabling sleep-mode current reduction below 1µA while preserving signal path integrity. Use Value: <250pA leakage at +25°C and <6nA at +85°C minimizes standby current drain; 35µW quiescent power extends operational runtime. |
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, 1.8Ω typical RON, but requires ≥4.5V logic supply; no VL pin - logic referenced to V+. | Lower on-resistance suits precision instrumentation, but lacks VL flexibility for TTL interfacing in mixed-supply systems. | Select ADG1419BRMZ where ultra-low RON and low thermal EMF are prioritized over logic-supply independence. |
| TS5A23157DCUR | SPST NO, 0.9Ω typical RON, 5V-only supply, 1.65–5.5V logic compatible; no bipolar support or ±44V rating. | Optimized for low-voltage portable electronics; unsuitable for ±15V industrial or military signal chains. | Choose TS5A23157DCUR for cost-sensitive, single-supply 3.3V/5V systems where high-voltage capability is unnecessary. |
Compared with ADG1419BRMZ and TS5A23157DCUR, the MAX318ESA+ uniquely combines bipolar supply operation, programmable logic supply (VL), ±44V breakdown, and guaranteed on-resistance matching - making it irreplaceable in wide-range, mixed-signal, and ruggedized applications.
Availability
MAX318ESA+ is available at Aetrix Electronics and suitable for test equipment, military radios, sample-and-hold circuits, and battery-powered guidance 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) designs high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets, with emphasis on precision, reliability, and integration.
The MAX317/MAX318/MAX319 family was engineered specifically for high-fidelity analog signal routing in demanding environments - delivering guaranteed matching, low charge injection, and robust ESD protection in compact packages.
FAQ
What is the operating temperature range for MAX318ESA+?
The MAX318ESA+ is rated for operation from –40°C to +85°C. This extended industrial temperature range is confirmed in the Ordering Information table and Electrical Characteristics sections of the datasheet, and applies specifically to the ESA-grade SO package variant. The 'E' suffix denotes the –40°C to +85°C grade, and the 'SA' suffix confirms the 8-pin SO packaging. MAX318ESA+ maintains all key specifications - including on-resistance, leakage, and switching speed - across this full range.
Does MAX318ESA+ support single-supply operation?
Yes, MAX318ESA+ supports single-supply operation from +10V to +30V. When used in single-supply mode, V– must be connected to ground (0V), and VL should be tied to +5V for TTL compatibility or to V+ for CMOS logic levels. The datasheet's "Electrical Characteristics - Single Supply" section explicitly validates parameters including analog-signal range (0V to V+), on-resistance, and switching times under these conditions. MAX318ESA+ retains rail-to-rail signal handling capability in this configuration.
What is the function of the VL pin on MAX318ESA+?
The VL pin on MAX318ESA+ sets the logic-level reference voltage for the IN input. It can be independently biased to +5V for TTL compatibility (ensuring proper recognition of 0.8V/2.4V thresholds) or tied to V+ for CMOS logic operation. This decoupling of logic and analog supplies eliminates level-shifter requirements and improves noise immunity in mixed-signal systems. The VL pin is not internally connected to GND or V+ - its voltage directly defines the logic threshold window, as verified in the Pin Description and Applications Information sections.
Is MAX318ESA+ pin-compatible with MAX317ESA+ or MAX319ESA+?
No, MAX318ESA+ is not pin-compatible with MAX317ESA+ or MAX319ESA+. While all three share the same 8-pin SO package footprint, their pinouts differ significantly: MAX318ESA+ uses Pin 8 for NO, whereas MAX317ESA+ uses Pin 8 for NC and MAX319ESA+ uses Pin 8 for COM. The Pin Configuration diagrams and Pin Description table confirm distinct terminal assignments per device. Swapping them without PCB redesign will result in incorrect or nonfunctional switching behavior.
What does the '+' suffix indicate in MAX318ESA+?
The '+' suffix in MAX318ESA+ denotes Maxim's enhanced manufacturing and quality assurance grade, indicating that the device meets additional screening, traceability, and reliability standards beyond baseline commercial specifications. It signifies tape-and-reel packaging, full lot traceability, and compliance with Maxim's enhanced flow for high-reliability applications. This suffix is consistently applied across Maxim's analog switch portfolio and is documented in Maxim's packaging nomenclature guide and official distributor listings.
MAX318ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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:
- -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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