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Analog Devices Inc./Maxim Integrated MAX4521EUE+T
- Part No.:
- MAX4521EUE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4521EUE+T.pdf
- Description:
- IC SW SPST-NCX4 100OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
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Product details
Overview
MAX4521EUE+T from Maxim Integrated is a quad, low-voltage, normally closed (NC) SPST analog switch IC designed for rail-to-rail signal routing in precision analog and mixed-signal systems. It features 100Ω max on-resistance, 4Ω max channel-to-channel on-resistance matching, <1µW quiescent power, ±2V to ±6V dual or +2V to +12V single supply operation, and TTL/CMOS-compatible logic inputs - enabling use in battery-powered data acquisition front-ends.
For engineers reviewing the MAX4521EUE+T datasheet, MAX4521EUE+T pinout, MAX4521EUE+T application, or MAX4521EUE+T equivalent, key selection criteria include NC configuration per channel, guaranteed -40°C to +85°C industrial temperature range, TSSOP-16 package with exposed pad, ESD robustness (>2kV), and compatibility with legacy DG211/DG212/DG213 layouts.
Technical Context
The MAX4521EUE+T implements four independent CMOS transmission-gate switches with complementary N- and P-channel MOSFETs driven by level-translated logic, enabling true rail-to-rail analog signal handling across V− to V+. Its internal logic translators accept TTL/CMOS thresholds (0.8V/2.4V) under ±5V or +5V supplies, decoupling digital control from analog supply domains.
All four switches are normally closed (NC) - conducting when INx = LOW - with matched on-resistance flatness (12Ω max over signal range) and low charge injection (1–5pC). The device uses reverse-biased ESD diodes between each analog pin and V+/V−, making leakage current highly dependent on signal voltage relative to supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST, normally closed (NC) - conducts at logic LOW input |
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures minimal signal attenuation in low-impedance paths |
| On-Resistance Matching (ΔRON) | 4Ω max between channels - critical for multi-channel instrumentation gain/offset tracking |
| Off-Leakage Current | 1nA at +25°C, 10nA at +85°C - preserves accuracy in high-impedance sensor interfaces |
| Supply Range | +2V to +12V single or ±2V to ±6V dual - supports portable +3.3V, industrial ±5V, and legacy +5V systems |
| Logic Compatibility | TTL/CMOS thresholds (0.8V/2.4V) - interoperable with microcontrollers and FPGAs without level shifters |
| ESD Rating | >2kV per Method 3015.7 - withstands handling and board-level electrostatic discharge |
Pinout & Package
MAX4521EUE+T is housed in a 16-pin TSSOP package (U16-2) with 0.65mm pitch and exposed thermal pad (EP) connected to V+. The package measures 5.0mm × 4.4mm × 1.1mm and is RoHS-compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | NC1–NC4 | Normally closed analog terminals - conduct to COMx when corresponding INx = LOW |
| 2, 15, 10, 7 | COM1–COM4 | Common analog terminals - bidirectional signal path shared with NCx/NOx |
| 3, 6, 14, 11 | IN1–IN4 | Digital control inputs - active-low logic determines NC closure state |
| 5 | GND | Digital ground reference - isolated from analog signal path; no analog return path |
| 8 | V− | Negative analog supply - sets lower bound of rail-to-rail signal range; connect to GND for single supply |
| 13 | V+ | Positive analog/digital supply - powers internal logic translators and switch drivers; internally tied to substrate |
| 16 | N.C. | No internal connection - must be left floating or grounded per layout best practice |
| EP | Exposed Pad | Thermal and electrical tie to V+ - required for thermal performance and ESD robustness |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ without clipping - essential for full-scale sensor output routing |
| Low on-resistance flatness (12Ω max) | Minimizes THD and gain error across signal swing - verified over ±4.5V range at ±5V supplies |
| Pin compatibility with DG211/DG212/DG213 | Enables drop-in replacement in existing designs using industry-standard quad SPST footprints |
| Ultra-low power consumption (<1µW) | Reduces system standby current - critical for battery life in portable test equipment |
| Break-before-make not applicable | NC topology eliminates timing hazards during switching - simplifies control sequencing in multiplexers |
Applications
| Battery-Powered Data Acquisition | Avionics Signal Conditioning |
|---|---|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge outputs into a single ADC channel in handheld field instruments. IC Role / Device Role / Timing Role: Quad NC switch routes analog sensor signals to common front-end amplifier/ADC input; controlled by MCU GPIOs. Use Value: 100Ω RON and 4Ω matching preserve measurement linearity; <1µW quiescent power extends battery runtime. | Use Scenario: Selecting between redundant flight control sensor inputs (e.g., airspeed, angle-of-attack) before signal conditioning. IC Role / Device Role / Timing Role: Fault-tolerant analog switch providing fail-safe NC default path; powered from ±5V avionics bus. Use Value: Guaranteed -40°C to +85°C operation meets DO-160 environmental requirements; >2kV ESD protects against aircraft static discharge. |
| Audio Signal Routing | Automated Test Equipment (ATE) |
Use Scenario: Channel selection in professional audio mixers requiring silent switching and minimal crosstalk. IC Role / Device Role / Timing Role: Low-charge-injection (1–5pC) NC switch prevents audible pop/click during source switching. Use Value: 2pF off-capacitance and <−90dB off-isolation at 100kHz suppress inter-channel leakage in multi-track systems. | Use Scenario: Configuring stimulus/sense paths in modular PXI-based ATE for semiconductor wafer probing. IC Role / Device Role / Timing Role: Precision analog switch matrix enabling programmable DUT interface topologies under FPGA control. Use Value: 125Ω RON at +3V supply supports low-voltage DUT testing; 15ns typical tOFF enables fast test cycle times. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4522EUE+T | Quad NO (normally open) configuration - conducts only when INx = HIGH | Requires inverted control logic; unsuitable where fail-safe closed path is mandatory | Select when active-HIGH enable is preferred or NC behavior conflicts with system safety architecture |
| ADG1412BRUZ | Quad SPST, NO, 1.8Ω typical RON at ±15V - lower on-resistance but higher supply voltage requirement | Not rated for -40°C to +85°C with same leakage specs; requires ±15V for specified RON | Choose for ultra-low RON in high-precision lab equipment; avoid in battery-powered or wide-temp industrial use |
Compared with MAX4522EUE+T (NO version) and ADG1412BRUZ (low-RON but high-voltage), MAX4521EUE+T uniquely delivers NC default state, guaranteed industrial temperature performance, and single/dual supply flexibility - making it optimal for safety-critical or portable analog routing where power and thermal constraints dominate.
Availability
MAX4521EUE+T is available at Aetrix Electronics and suitable for battery-operated equipment, data acquisition systems, and avionics signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4521EUE+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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX4521/MAX4522/MAX4523 family was engineered for low-voltage, low-power analog signal switching in space-constrained, battery-sensitive applications - emphasizing rail-to-rail fidelity, logic compatibility, and robust ESD protection without external components.
FAQ
What is the default switch state of MAX4521EUE+T?
The MAX4521EUE+T features four normally closed (NC) SPST switches. Each switch conducts between its COMx and NCx terminals when the corresponding INx control input is logic LOW (≤0.8V). When INx is HIGH (≥2.4V), the switch opens. This NC default provides fail-safe signal continuity in case of control loss - a key distinction from the NO-configured MAX4522EUE+T.
Does MAX4521EUE+T support single-supply operation?
Yes, MAX4521EUE+T operates from a single +2V to +12V supply. To configure for single supply, connect V− to GND. The device remains fully specified down to +2.7V operation, with 250Ω max on-resistance at +4.5V and 600Ω max at +2.7V. Logic thresholds remain TTL/CMOS-compatible, and rail-to-rail signal handling spans 0V to V+.
What is the maximum allowable voltage difference between V+ and V− for MAX4521EUE+T?
The absolute maximum V+ to V− differential is 13.0V. While the device supports ±2V to ±6V dual supplies, designers must ensure that supply tolerances (e.g., ±10% on ±6V yields 13.2V) and transient spikes do not exceed this limit. Exceeding 13.0V risks permanent damage - a critical constraint when using ±5V or ±6V rails with margin.
How does MAX4521EUE+T achieve rail-to-rail analog signal capability?
MAX4521EUE+T achieves rail-to-rail operation using complementary N- and P-channel MOSFETs in parallel within each switch. Their gates are driven out-of-phase by internal level translators referenced to V+ and V−, enabling conduction from V− up to V+ without dead zones. This architecture avoids the signal clipping seen in single-FET switches and is validated across the full ±4.5V analog range at ±5V supplies.
Is MAX4521EUE+T pin-compatible with industry-standard analog switches?
Yes, MAX4521EUE+T is explicitly pin-compatible with the DG211, DG212, and DG213 quad SPST analog switches. Its TSSOP-16 pinout matches these legacy devices, allowing direct PCB replacement without layout changes. This compatibility extends to electrical behavior - including on-resistance, leakage, and timing - making MAX4521EUE+T a seamless upgrade path for reliability, ESD robustness, and extended temperature range.
MAX4521EUE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 80ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 2pF, 2pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX4521EUE+T FAQ
1.How can I place an order for MAX4521EUE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4521EUE+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 MAX4521EUE+T reliable?
The price and inventory of MAX4521EUE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4521EUE+T is usually 5 days.
3.What payment methods are accepted for MAX4521EUE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4521EUE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4521EUE+T?
MAX4521EUE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4521EUE+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 MAX4521EUE+T?
For technical support, including MAX4521EUE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4521EUE+T requirements.
6.How does Aetrix verify that MAX4521EUE+T is sourced from the original manufacturer or authorized distributors?
All MAX4521EUE+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 MAX4521EUE+T meets industry standards.
7.What is the process for return or replacement of MAX4521EUE+T?
All MAX4521EUE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4521EUE+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 MAX4521EUE+T part is unused and in its original packaging.
Return procedure for MAX4521EUE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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