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Analog Devices Inc./Maxim Integrated MAX4518ESD+
- Part No.:
- MAX4518ESD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4518ESD+.pdf
- Description:
- IC SWITCH SP4T X 1 100OHM 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:616
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Product details
Overview
The MAX4518ESD+ from Maxim Integrated is a precision 4-channel CMOS analog multiplexer designed for low-distortion signal routing in precision data-acquisition and battery-operated systems. It delivers <100Ω on-resistance (typ. 60Ω), <4Ω channel-to-channel matching, <5pC charge injection, rail-to-rail analog signal handling (±4.5V dual or +4.5V single supply), and operates across –40°C to +85°C.
For engineers reviewing the MAX4518ESD+ datasheet, MAX4518ESD+ pinout, MAX4518ESD+ application, or MAX4518ESD+ equivalent, this page provides verified electrical specs, SO-14 package layout, leakage/switching performance at temperature extremes, and real-world selection guidance against functionally aligned alternatives.
Technical Context
The MAX4518ESD+ uses Maxim's low-voltage silicon-gate CMOS process to achieve flat on-resistance (<10Ω variation over ±4.5V signal range) and guaranteed electrostatic discharge protection >2000V. Its enable-controlled 4:1 architecture supports break-before-make switching with <40ns open interval and <250ns transition time under ±5V supplies.
It supports dual-supply operation (±2.7V to ±8V) or single-supply operation (+2.7V to +15V), with TTL/CMOS-compatible logic inputs and rail-to-rail analog signal capability. Leakage is tightly specified: NO-off current <2nA and COM-off current <5nA at +85°C - critical for high-impedance sample-and-hold front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 60Ω typ., ≤100Ω max. Ensures minimal signal attenuation and gain error in precision amplifier/mux cascades. |
| On-Resistance Matching | <4Ω between channels. Enables accurate differential or ratiometric measurements without calibration. |
| Charge Injection | <5pC. Limits voltage glitch on high-Z hold capacitors, preserving 12-bit+ accuracy in sample-and-hold circuits. |
| NO-Off Leakage | <2nA at +85°C. Prevents measurable drift in µA-range sensor interfaces or battery-monitoring paths. |
| Supply Range | +2.7V to +15V (single) or ±2.7V to ±8V (dual). Supports direct integration with Li-ion, industrial 5V, and legacy ±5V systems. |
| Switching Speed | tTRANS <250ns, tON(EN) <275ns. Suitable for multiplexed ADC sampling up to ~1MHz effective rate. |
| ESD Protection | >2000V HBM. Reduces need for external TVS diodes in ruggedized test equipment and avionics interfaces. |
Pinout & Package
MAX4518ESD+ is supplied in a 14-pin SOIC (Small Outline Integrated Circuit) package, 150 mil width, with standard JEDEC MS-012AC footprint and gull-wing leads. Pin 1 marked by beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 A1 | Channel address bit 1 | Selects NO1–NO4 via binary encoding (A1,A0); high-impedance CMOS input, compatible with 3.3V/5V logic. |
| 2 GND | Logic ground reference | Return path for digital control signals; must be tied to system ground, not analog ground, unless star-point isolated. |
| 3 V+ | Positive supply voltage | Accepts +2.7V to +15V; powers internal logic and switch driver; decoupling capacitor required near pin. |
| 4 NO3 | Analog input channel 3 | Normally open terminal; connects to COM only when A1=1, A0=0, EN=1; rated for ±4.5V signal swing. |
| 5 NO1 | Analog input channel 1 | Normally open terminal; selected when A1=0, A0=0, EN=1; matched RON ensures consistent channel gain. |
| 6 V− | Negative supply voltage | Accepts –2.7V to –8V in dual mode; tied to GND for single-supply use; requires local decoupling. |
| 7 EN | Enable logic input | Active-high; disables all switches when low (high-Z state); enables decoding when high; TTL/CMOS compatible. |
| 8 A0 | Channel address bit 0 | LSB of 2-bit address; together with A1, selects one of four NOx inputs; no internal pull-up/down. |
| 9 NO4 | Analog input channel 4 | Selected when A1=1, A0=1, EN=1; identical RON/leakage spec as NO1–NO3 for uniform channel performance. |
| 10 N.C. | No internal connection | Not bonded; must remain unconnected; no routing or thermal relief needed on PCB. |
| 11 N.C. | No internal connection | Not bonded; floating; avoid solder mask openings or vias to prevent contamination-induced leakage. |
| 12 N.C. | No internal connection | Not bonded; electrically isolated; may be used as mechanical fiducial but not for grounding or shielding. |
| 13 COM | Common analog output | Single-pole output node; routed to selected NOx; handles rail-to-rail signals; low capacitance (17pF typ.) minimizes settling time. |
| 14 NO2 | Analog input channel 2 | Selected when A1=0, A0=1, EN=1; matched flatness (<10Ω) ensures stable gain across full analog input range. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed on-resistance matching | <4Ω between all four channels - eliminates inter-channel gain mismatch in multi-sensor data loggers. |
| Rail-to-rail signal handling | Supports analog inputs from V− to V+ - enables direct interface with op-amps operating at supply rails without level-shifting. |
| Ultra-low charge injection | <5pC - reduces hold-step error in 16-bit SAR ADC front-ends using external sample capacitors ≥100pF. |
| Low leakage at extended temperature | NO-off <2nA at +85°C - maintains accuracy in automotive cabin controllers and military radios exposed to thermal cycling. |
| Bipolar and single-supply flexibility | Operates from ±2.7V to ±8V or +2.7V to +15V - simplifies power architecture in mixed-signal test systems with legacy ±5V and modern 3.3V domains. |
Applications
| Sample-and-Hold Circuits | Automatic Test Equipment |
|---|---|
Use Scenario: Multiplexing multiple sensor outputs into a single high-resolution ADC with external hold capacitor. IC Role / Device Role / Timing Role: Precision analog switch selecting one of four transducer signals; timing-critical during acquisition phase to minimize charge injection error. Use Value: <5pC charge injection and <2nA off-leakage preserve 16-bit linearity over temperature without recalibration. |
Use Scenario: Routing calibrated reference voltages and DUT signals through switching matrices in benchtop ATE platforms. IC Role / Device Role / Timing Role: Low-RON, low-crosstalk 4:1 mux enabling fast reconfiguration of stimulus/sense paths under microcontroller control. Use Value: <100Ω RON and –75dB off-isolation ensure minimal loading and crosstalk between adjacent test channels. |
| Heads-Up Displays | Battery-Operated Systems |
Use Scenario: Selecting video or symbol generator outputs for projection onto aircraft windshields with minimal distortion. IC Role / Device Role / Timing Role: Analog signal router handling composite video or RGB signals; must maintain bandwidth and DC accuracy across wide temperature range. Use Value: Rail-to-rail operation and flat RON (<10Ω variation) preserve gamma curve fidelity and black-level stability from –40°C to +85°C. |
Use Scenario: Managing analog sensor inputs (temperature, voltage, current) in portable medical monitors or handheld meters. IC Role / Device Role / Timing Role: Low-power analog multiplexer enabling duty-cycled sensing to extend battery life while maintaining measurement integrity. Use Value: <300µW typical power and <2nA leakage at +85°C allow multi-year operation on coin-cell batteries without drift-induced false alarms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1418BRUZ | 8-channel, ±15V max supply, 4.7Ω RON, but higher 12pC charge injection and +125°C rating only in ceramic CERDIP. | Higher channel count and wider supply range suit industrial PLC I/O modules; less suitable for low-leakage S&H. | Choose ADG1418BRUZ when scaling to 8 channels or requiring >±8V analog swing; verify charge injection impact on hold capacitor size. |
| TMUX1308PWR | 8-channel, +5V-only supply, 4.5Ω RON, 1.5pC charge injection, but NO-off leakage rises to 15nA at +85°C. | Optimized for low-voltage, high-speed USB/PCIe signal routing; lacks bipolar support and extended temp grade. | Choose TMUX1308PWR for cost-sensitive, 5V-only consumer electronics; avoid in battery-powered or military-grade designs needing sub-5nA leakage. |
Compared with ADG1418BRUZ and TMUX1308PWR, the MAX4518ESD+ uniquely balances ultra-low leakage (<2nA), bipolar supply flexibility, and guaranteed –40°C to +85°C performance in a compact SO-14 package - making it optimal for precision, wide-temperature, mixed-supply instrumentation where channel count is fixed at four.
Availability
MAX4518ESD+ is available at Aetrix Electronics and suitable for automatic test equipment, battery-operated medical devices, and heads-up display subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4518ESD+ 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 computing markets.
The MAX4518ESD+ belongs to Maxim's precision analog switch product line, engineered specifically for low-leakage, low-charge-injection signal routing in demanding data-acquisition and test instrumentation applications.
FAQ
What is the maximum analog signal range supported by the MAX4518ESD+?
The MAX4518ESD+ supports rail-to-rail analog signals from V− to V+. With ±5V dual supplies, this yields a ±4.5V range; with +5V single supply (V− = GND), it supports 0V to +4.5V. The device guarantees flat on-resistance (<10Ω variation) across this full range, ensuring consistent gain and minimal distortion in precision signal chains.
Does the MAX4518ESD+ require external pull-up resistors on its address pins A0 and A1?
No, the MAX4518ESD+ does not require external pull-up resistors on A0 or A1. These are CMOS logic inputs with no internal termination; they must be actively driven to a valid logic high (≥2.4V) or low (≤0.8V) voltage. Floating address lines will cause undefined channel selection and potential increased leakage or shoot-through current.
Can the MAX4518ESD+ operate reliably with unbalanced supplies like +10V and –5V?
Yes, the MAX4518ESD+ supports unbalanced supplies such as +10V and –5V, provided the absolute difference between V+ and V− does not exceed 17V and each supply remains within its respective absolute maximum rating (V+ ≤ +17V, V− ≥ –17V). Performance parameters like on-resistance and leakage remain within datasheet limits under these conditions.
How does the enable pin (EN) affect leakage current in the MAX4518ESD+?
When EN is low, all switches are disabled and the MAX4518ESD+ enters a high-impedance state: NOx and COM terminals exhibit <2nA off-leakage (NO-off) and <5nA off-leakage (COM-off) at +85°C. This ensures minimal signal corruption in standby or power-gated modes - critical for battery-backed systems and low-power sensor nodes using the MAX4518ESD+.
Is the MAX4518ESD+ pin-compatible with other variants in the MAX4518 family, such as MAX4518CPD or MAX4518EEE?
Yes, the MAX4518ESD+ shares identical pinout and footprint with all MAX4518 variants in SO-14 (e.g., MAX4518CPD) and QSOP-16 (e.g., MAX4518EEE) packages. However, temperature range differs: MAX4518ESD+ is rated for –40°C to +85°C, while CPD is 0°C to +70°C and EEE is –40°C to +85°C in QSOP. Electrical specs are fully aligned across grades.
MAX4518ESD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Max)
- Voltage - Supply, Single (V+):
- 2V ~ 15V
- Voltage - Supply, Dual (V±):
- ±2.7V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC (Max)
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 16pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX4518ESD+ FAQ
1.How can I place an order for MAX4518ESD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4518ESD+ 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 MAX4518ESD+ reliable?
The price and inventory of MAX4518ESD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4518ESD+ is usually 5 days.
3.What payment methods are accepted for MAX4518ESD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4518ESD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4518ESD+?
MAX4518ESD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4518ESD+ 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 MAX4518ESD+?
For technical support, including MAX4518ESD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4518ESD+ requirements.
6.How does Aetrix verify that MAX4518ESD+ is sourced from the original manufacturer or authorized distributors?
All MAX4518ESD+ 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 MAX4518ESD+ meets industry standards.
7.What is the process for return or replacement of MAX4518ESD+?
All MAX4518ESD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4518ESD+, 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 MAX4518ESD+ part is unused and in its original packaging.
Return procedure for MAX4518ESD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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