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Analog Devices Inc./Maxim Integrated MAX4521EPE+
- Part No.:
- MAX4521EPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4521EPE+.pdf
- Description:
- INTEGRATED CIRCUIT
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Inventory:2,412
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Product details
Overview
MAX4521EPE+ from Maxim Integrated is a quad, low-voltage, normally closed (NC) SPST analog switch IC designed for precision signal routing in battery-powered and rail-to-rail systems. It delivers 100Ω max on-resistance with ≤4Ω matching between channels, <1µW power consumption, and ±2V to ±6V dual or +2V to +12V single-supply operation - enabling use in portable data acquisition and avionics signal conditioning.
For engineers reviewing the MAX4521EPE+ datasheet, MAX4521EPE+ pinout, MAX4521EPE+ application, or MAX4521EPE+ equivalent, key selection criteria include NC-switch topology, -40°C to +85°C extended temperature rating, DIP-16 package compatibility with DG211, and verified rail-to-rail analog signal handling up to ±4.5V with <1nA off-leakage at +25°C.
Technical Context
The MAX4521EPE+ implements four independent CMOS transmission gates with complementary N- and P-channel MOSFETs driven by logic-level translators, enabling true bidirectional rail-to-rail analog conduction. Its internal ESD protection diodes clamp signals exceeding V+ or V−, limiting analog voltage range to (V− − 0.3V) to (V+ + 0.3V).
Logic inputs feature TTL/CMOS-compatible thresholds (0.8V/2.4V) at ±5V or +5V supply, while supply current remains below 1µA across temperature. The device supports break-before-make timing only in the MAX4523 variant - not applicable to MAX4521EPE+ - and exhibits flat on-resistance (12Ω max variation) over its full signal range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST, normally closed (NC) configuration - all four switches conduct when logic input = 0. |
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures minimal signal attenuation in precision sensor or audio paths. |
| On-Resistance Match | ≤4Ω max mismatch between channels - critical for matched gain/attenuation in multi-channel instrumentation. |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C - preserves accuracy in high-impedance data acquisition front-ends. |
| Supply Range | +2V to +12V single supply or ±2V to ±6V dual supply - supports wide input voltage flexibility in mixed-signal systems. |
| Logic Compatibility | TTL/CMOS thresholds (0.8V low / 2.4V high) at +5V - enables direct interface with microcontrollers and FPGAs without level-shifting. |
| ESD Protection | >2kV per Method 3015.7 - enhances robustness in handling-sensitive test and portable equipment environments. |
Pinout & Package
MAX4521EPE+ uses a 16-pin plastic DIP (P16-1) package with through-hole mounting, 0.300" width, and industry-standard pin spacing. Pin 1 is NC (not connected), and the exposed substrate is internally tied to V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | NC1–NC4 | Normally closed analog terminals - conduct to COMx when INx = 0; no internal connection at Pin 1. |
| 2, 15, 10, 7 | COM1–COM4 | Common analog I/O nodes - bidirectional signal path shared between NCx and switch control logic. |
| 3, 14, 11, 6 | IN1–IN4 | Digital control inputs - active-low logic (0 = ON, 1 = OFF) per NC switch behavior. |
| 5 | GND | Digital ground reference - separate from analog signal path; no analog return path required. |
| 8 | V− | Negative analog supply - connect to GND for single-supply operation; sets lower analog voltage limit. |
| 13 | V+ | Positive analog/digital supply - powers internal logic translators and switch drive circuitry; ties to substrate. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ (e.g., ±4.5V with ±5V supplies), eliminating level-shifting in bipolar sensor interfaces. |
| Low on-resistance flatness | 12Ω max variation across full signal range - maintains consistent gain/attenuation in audio and measurement paths. |
| Ultra-low power operation | <1µW typical supply current - extends battery life in portable medical and handheld test equipment. |
| PIN-compatible with DG211 | Direct drop-in replacement for industry-standard quad NC switch - simplifies legacy design upgrades and second-sourcing. |
| High off-isolation | <−90dB at 100kHz - suppresses crosstalk between adjacent channels in dense multi-signal routing applications. |
Applications
| Portable Data Acquisition | Avionics Signal Conditioning |
|---|---|
|
Use Scenario: Multiplexing low-level thermocouple or strain gauge outputs in handheld environmental monitors. IC Role / Device Role / Timing Role: Quad NC analog switch routing sensor signals to a shared ADC channel under microcontroller control. Use Value: 1nA off-leakage prevents DC error accumulation; rail-to-rail support accommodates ±10mV sensor spans without amplification. |
Use Scenario: Selecting between redundant flight control sensor inputs in certified airborne electronics units. IC Role / Device Role / Timing Role: Isolating backup inertial measurement unit (IMU) signals during primary system validation. Use Value: −40°C to +85°C rating meets DO-160 thermal requirements; >2kV ESD withstand protects against aircraft static discharge. |
| Battery-Powered Audio Routing | Automated Test Equipment (ATE) |
|
Use Scenario: Configuring input sources (mic, line, Bluetooth codec) in a rechargeable field recorder. IC Role / Device Role / Timing Role: Low-distortion analog path selector enabling clean 20Hz–20kHz signal transfer. Use Value: 100Ω RON and <−90dB off-isolation preserve THD <0.01% at 1kHz; <1µW quiescent power minimizes standby drain. |
Use Scenario: Channel switching in modular PXI-based semiconductor parametric testers. IC Role / Device Role / Timing Role: Precision multiplexer for applying bias voltages or measuring leakage currents across DUT pins. Use Value: 4Ω max RON matching ensures consistent test repeatability; 125Ω max RON at +3V enables low-voltage device characterization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4521CPE+ | 0°C to +70°C temperature range vs. MAX4521EPE+'s −40°C to +85°C; identical electrical specs and pinout. | Suitable for commercial-grade industrial controllers but not automotive or outdoor deployed systems. | Select MAX4521CPE+ only if ambient operating temperature stays within 0–70°C and cost sensitivity outweighs extended temp margin. |
| ADG1411BRZ | Quad SPST, NC; 1.8Ω typical RON (vs. 100Ω max for MAX4521EPE+); requires ≥±4.5V dual or ≥9V single supply. | Better for low-RON precision instrumentation; incompatible with +3V-only or ±2.5V systems where MAX4521EPE+ operates. | Choose ADG1411BRZ when sub-2Ω on-resistance and <1pC charge injection are mandatory - not for legacy +5V/DIP-16 board reuse. |
Compared with MAX4521CPE+ and ADG1411BRZ, the MAX4521EPE+ uniquely balances extended temperature capability, DIP-16 footprint compatibility with legacy DG211 designs, and ultra-low power - making it optimal for ruggedized portable instrumentation where supply headroom and thermal margin are constrained.
Availability
MAX4521EPE+ is available at Aetrix Electronics and suitable for battery-operated equipment, data acquisition systems, and avionics signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4521EPE+ 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 MAX4521EPE+ belongs to Maxim's precision analog switch product line, engineered for low-leakage, rail-to-rail signal routing in resource-constrained and mission-critical systems where reliability and supply chain stability are essential.
FAQ
What is the maximum analog signal voltage range supported by the MAX4521EPE+?
The MAX4521EPE+ supports analog signals from V− to V+, with absolute limits of (V− − 0.3V) to (V+ + 0.3V) due to internal ESD clamping diodes. At ±5V supplies, this yields a usable range of ±4.5V. With +5V single supply (V− = GND), the range is 0V to +4.5V - confirmed in Electrical Characteristics tables for dual and single-supply operation.
Is the MAX4521EPE+ pin-compatible with the DG211 analog switch?
Yes, the MAX4521EPE+ is explicitly stated as pin compatible with the industry-standard DG211 in its Features section. Both use 16-pin DIP packages with identical pin functions: INx, COMx, NCx, V+, V−, and GND positions match exactly - enabling drop-in replacement without PCB modification.
What is the logic polarity of the MAX4521EPE+ control inputs?
The MAX4521EPE+ features active-low logic control: a logic "0" (≤0.8V) turns each NC switch ON (closed), while a logic "1" (≥2.4V) turns it OFF (open). This behavior is defined in the Functional Diagrams and Truth Tables section, and applies uniformly across all four IN1–IN4 inputs.
Does the MAX4521EPE+ support single-supply operation at +3V?
Yes, the MAX4521EPE+ is fully specified for +2.7V to +3.6V single-supply operation. At +3V, typical on-resistance is 600Ω (max 260Ω at VCOM = 1.0V), with guaranteed logic thresholds (0.8V/2.4V) and <1µA supply current - validated in the "Electrical Characteristics-Single +3V Supply" table.
How does the MAX4521EPE+ handle leakage current in high-impedance circuits?
The MAX4521EPE+ specifies 1nA max COM_ off-leakage at +25°C and 10nA at +85°C - measured and guaranteed per Note 7. This leakage flows entirely to V+ or V− supply rails via internal ESD diodes, not between switch terminals, preserving signal integrity in >1MΩ sensor front-ends such as pH probes or piezoelectric transducers.
MAX4521EPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX4521EPE+ FAQ
1.How can I place an order for MAX4521EPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4521EPE+ 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 MAX4521EPE+ reliable?
The price and inventory of MAX4521EPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4521EPE+ is usually 5 days.
3.What payment methods are accepted for MAX4521EPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4521EPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4521EPE+?
MAX4521EPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4521EPE+ 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 MAX4521EPE+?
For technical support, including MAX4521EPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4521EPE+ requirements.
6.How does Aetrix verify that MAX4521EPE+ is sourced from the original manufacturer or authorized distributors?
All MAX4521EPE+ 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 MAX4521EPE+ meets industry standards.
7.What is the process for return or replacement of MAX4521EPE+?
All MAX4521EPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4521EPE+, 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 MAX4521EPE+ part is unused and in its original packaging.
Return procedure for MAX4521EPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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