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Analog Devices Inc./Maxim Integrated MAX4521CPE+
- Part No.:
- MAX4521CPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4521CPE+.pdf
- Description:
- IC SWITCH SPST-NCX4 100OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:218
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Product details
Overview
MAX4521CPE+ 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 paths. It features 100Ω max on-resistance (at ±5V), 4Ω max channel-to-channel RON matching, and 12Ω max RON flatness over the full signal range. Each switch supports dual supplies (±2V to ±6V) or single +2.7V–+12V operation and delivers <1µW quiescent power - ideal for battery-powered data acquisition front-ends.
For engineers reviewing the MAX4521CPE+ datasheet, MAX4521CPE+ pinout, MAX4521CPE+ application, or MAX4521CPE+ equivalent, key selection criteria include NC configuration, 16-pin DIP package compatibility with DG211, guaranteed 1nA off-leakage at +25°C, and ESD robustness (>2kV per Method 3015.7).
Technical Context
The MAX4521CPE+ implements four independent CMOS transmission gates with complementary N- and P-channel MOSFETs driven by logic-level translators. Its analog path operates between V+ and V−, with no ground reference - enabling true rail-to-rail signal handling up to ±6V differential. Internal ESD diodes clamp signals exceeding supply rails, limiting analog leakage to sub-nA levels at +25°C.
Digital inputs feature fixed TTL/CMOS-compatible thresholds (0.8V/2.4V) regardless of supply voltage, ensuring reliable control across ±5V and +5V systems. Switch timing is characterized with 100ns tON and 40ns tOFF (dual ±4.5V), and charge injection is tightly controlled at 1–5pC - critical for sample-and-hold and multiplexer applications demanding low glitch energy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 100Ω max at ±5V - ensures minimal signal attenuation and gain error in precision sensor interfaces |
| RON matching | 4Ω max between channels - enables accurate ratio-metric measurements in multi-channel data acquisition |
| RON flatness | 12Ω max over signal range - maintains consistent channel gain across full ±4.5V analog swing |
| Off-leakage current | 1nA at +25°C - preserves accuracy in high-impedance circuits like pH sensors or piezoelectric transducers |
| Supply range | +2.7V to +12V single or ±2V to ±6V dual - supports portable, industrial, and avionics power architectures |
| ESD protection | >2kV per Method 3015.7 - enhances reliability in handling-sensitive test equipment and field-deployed systems |
| Logic compatibility | 0.8V/2.4V thresholds - guarantees noise-immune switching with standard TTL/CMOS microcontrollers |
Pinout & Package
MAX4521CPE+ uses a 16-pin plastic DIP (P16-1) package with 0.300" wide body and through-hole mounting. Pin 1 is NC (not connected); pins 2 and 5 are V− and GND respectively; pins 11 and 13 are V+ and COM2; all four INx pins (1, 14, 7, 10) control corresponding NC switches.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | NC1–NC4 | Normally closed analog terminals - conduct when INx = 0; used as low-leakage signal paths in default-closed safety circuits |
| 2, 15, 10, 7 | COM1–COM4 | Common analog terminals - bidirectional signal interface points shared with NC/NO paths |
| 3, 6, 14, 11 | IN1–IN4 | Digital control inputs - active-low logic drives NC switches open; compatible with 3.3V/5V microcontroller GPIO |
| 4, 5 | GND | Digital ground reference - isolated from analog path; required for logic-level translator biasing |
| 11, 13 | V+ | Positive supply input - powers internal logic and P-channel switches; internally tied to substrate |
| 2 | V− | Negative supply input - sets lower analog rail limit; connect to GND for single-supply operation |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ without clipping - essential for ±5V op-amp interfaces and audio line-level routing |
| Quad independently controlled SPST switches | Four isolated NC paths enable flexible signal matrix design in automated test equipment and sensor multiplexers |
| Pin compatibility with DG211/DG212/DG213 | Direct drop-in replacement in legacy designs - eliminates PCB redesign for analog switch upgrades |
| Low power consumption (<1µW) | Enables always-on monitoring in battery-operated IoT nodes and portable medical devices |
| 12Ω RON flatness | Maintains linear gain response across full analog range - critical for precision ADC front-end buffering |
Applications
| Battery-Powered Data Loggers | Avionics Signal Conditioning |
|---|---|
|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs into a single SAR ADC in a handheld environmental monitor. IC Role / Device Role / Timing Role: Quad NC switch routes high-impedance sensor outputs while maintaining <1nA leakage to prevent measurement drift. Use Value: 100Ω RON and 4Ω matching ensure channel-to-channel gain consistency within 0.1%, improving calibration stability. |
Use Scenario: Isolating redundant flight control sensor signals before feeding to a fault-tolerant voting circuit in a fly-by-wire system. IC Role / Device Role / Timing Role: Normally closed configuration provides fail-safe continuity during power loss or control failure. Use Value: >2kV ESD rating meets DO-160 Section 22 Level 3 requirements for airborne static discharge immunity. |
| Audio Signal Routing | Industrial Test Equipment |
|
Use Scenario: Selecting between microphone preamp outputs and line-level inputs in a modular studio mixer with analog summing bus. IC Role / Device Role / Timing Role: Low charge injection (1–5pC) minimizes pop/click artifacts during real-time analog source switching. Use Value: 12Ω RON flatness preserves frequency response flatness across 20Hz–20kHz, meeting THD <0.01% spec. |
Use Scenario: Configuring programmable attenuator and filter paths in an automated benchtop LCR meter with 100kHz bandwidth. IC Role / Device Role / Timing Role: Dual ±5V supply operation enables seamless integration with existing ±15V analog signal chains via level-shifting. Use Value: 100ns tON/40ns tOFF allows sub-microsecond channel reconfiguration during fast sweep sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4522CPE+ | Four normally open (NO) configuration vs. MAX4521CPE+'s NC - requires inverted control logic | Suitable where default-open state is required for safety-critical interlocks or power sequencing | Select MAX4522CPE+ only if system architecture mandates open-circuit default behavior |
| ADG1412BRZ | Higher RON (1.8Ω typical) but wider supply range (±15V); not pin-compatible; requires different PCB layout | Better suited for high-voltage industrial PLC I/O modules requiring ±15V signal conditioning | Choose ADG1412BRZ only when >±6V analog swing or lower RON is mandatory - not a drop-in replacement |
Compared with MAX4522CPE+, the MAX4521CPE+ provides fail-safe continuity without control power; compared with ADG1412BRZ, it offers proven DG211 pin compatibility and lower cost for ±5V systems, but lacks extended voltage range.
Availability
MAX4521CPE+ is available at Aetrix Electronics and suitable for battery-operated equipment, data acquisition systems, and avionics signal conditioning requiring stable component supply across industrial temperature ranges.
Supply support for MAX4521CPE+ 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 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-leakage analog signal routing in space-constrained, power-sensitive applications - emphasizing rail-to-rail operation, ESD resilience, and TTL/CMOS interoperability.
FAQ
What is the maximum supply voltage rating for MAX4521CPE+?
The MAX4521CPE+ has an absolute maximum V+ to V− differential of 13.0V. For dual-supply operation, this limits usable ranges to ±2V–±6V (e.g., +6V/−6V = 12V differential). Exceeding 13.0V - including tolerance-induced overshoot - risks permanent damage. The MAX4521CPE+ datasheet specifies derating curves for continuous power dissipation above +70°C.
Does MAX4521CPE+ support single-supply operation below +2.7V?
No. The MAX4521CPE+ is fully specified down to +2.7V single supply (V− = GND). At +2.7V, RON rises to 600Ω max, and logic thresholds remain fixed at 0.8V/2.4V - meaning a +2.7V system must use level-shifted or compatible digital drivers. Operation below +2.7V is not characterized or guaranteed.
How does the NC configuration of MAX4521CPE+ affect system safety?
The MAX4521CPE+'s normally closed (NC) topology ensures analog continuity when control power is absent or INx is low. This fail-safe behavior protects downstream circuitry in power-loss scenarios - for example, maintaining sensor feedback loops in motor controllers. Opening the switch requires active high logic on INx, making it ideal for emergency stop or watchdog-triggered isolation.
Can MAX4521CPE+ be used in audio applications requiring low THD?
Yes. The MAX4521CPE+ achieves <0.01% THD at 1kHz with 600Ω source/load (per Typical Operating Characteristics Figure TOC10), enabled by low RON flatness (12Ω) and minimal charge injection (1–5pC). Its 50MHz bandwidth supports full-range audio with flat insertion loss, though off-isolation degrades above 10MHz - acceptable for line-level routing but not RF mixing.
Is MAX4521CPE+ pin-compatible with DG211 in all package variants?
Yes - the MAX4521CPE+ in 16-pin plastic DIP (P16-1) matches DG211's pinout, footprint, and electrical behavior for NC switches. However, DG211 uses different internal architecture (bipolar vs. CMOS), resulting in higher leakage (100nA vs. 1nA) and no ESD rating. Layout reuse is valid, but performance validation under worst-case temperature and voltage is recommended.
MAX4521CPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX4521CPE+ FAQ
1.How can I place an order for MAX4521CPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4521CPE+ 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 MAX4521CPE+ reliable?
The price and inventory of MAX4521CPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4521CPE+ is usually 5 days.
3.What payment methods are accepted for MAX4521CPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4521CPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4521CPE+?
MAX4521CPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4521CPE+ 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 MAX4521CPE+?
For technical support, including MAX4521CPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4521CPE+ requirements.
6.How does Aetrix verify that MAX4521CPE+ is sourced from the original manufacturer or authorized distributors?
All MAX4521CPE+ 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 MAX4521CPE+ meets industry standards.
7.What is the process for return or replacement of MAX4521CPE+?
All MAX4521CPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4521CPE+, 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 MAX4521CPE+ part is unused and in its original packaging.
Return procedure for MAX4521CPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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