My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4521CUE+
- Part No.:
- MAX4521CUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4521CUE+.pdf
- Description:
- IC SW SPST-NCX4 100OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,080
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4521CUE+ 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 (±5V supplies), 4Ω max channel-to-channel RON matching, and 1nA max off-leakage at +25°C. Each switch handles analog signals from V− to V+, supporting single +2.7V to +12V or dual ±2V to ±6V operation - ideal for audio signal routing and portable data acquisition.
For engineers reviewing the MAX4521CUE+ datasheet, MAX4521CUE+ pinout, MAX4521CUE+ application, or MAX4521CUE+ equivalent, key selection criteria include NC configuration, TSSOP-16 package thermal performance (457mW at +70°C), rail-to-rail analog range, TTL/CMOS-compatible logic thresholds, and ESD robustness (>2kV per Method 3015.7).
Technical Context
The MAX4521CUE+ uses complementary CMOS (N- and P-channel MOSFETs in parallel) with out-of-phase gate drive referenced to V+ and V−, enabling true rail-to-rail analog conduction without ground reference. Its logic-level translators accept 0.8V/2.4V thresholds for TTL/CMOS compatibility across ±5V and +5V supplies.
All four switches are independently controlled, with no internal interconnect between channels - ensuring isolation-critical behavior in avionics and test equipment. The device's flat on-resistance (12Ω max over signal range) and low charge injection (1–5pC) support high-fidelity signal switching up to 50MHz in 50Ω systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPST, normally closed (NC) - all four switches conduct when logic input = 0 |
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures minimal signal attenuation in precision analog paths |
| RON Matching | 4Ω max between channels - critical for matched gain/phase in multi-channel instrumentation |
| Off-Leakage Current | 1nA max at +25°C - preserves signal integrity in high-impedance sensor front-ends |
| Analog Signal Range | Rail-to-rail: V− to V+ - supports full dynamic range of bipolar or single-supply sensors |
| Logic Compatibility | TTL/CMOS thresholds (0.8V/2.4V) - interoperable with standard microcontrollers and FPGAs |
| ESD Protection | >2kV per Method 3015.7 - enhances reliability in handling-sensitive industrial environments |
Pinout & Package
MAX4521CUE+ is housed in a 16-pin TSSOP (U16-2) package with 0.65mm pitch, 4.4mm body width, and exposed pad (EP) connected to V+. Thermal derating is 6.7mW/°C above +70°C (457mW max at +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | NC1–NC4 | Normally closed analog terminals - conduct to COMx when INx = 0; interchangeable with COMx as bidirectional signal path |
| 2, 15, 10, 7 | COM1–COM4 | Common analog terminals - serve as input/output junctions for each NC switch; no ground reference required |
| 3, 14, 11, 6 | IN1–IN4 | Digital control inputs - active-low logic: INx = 0 enables NCx–COMx conduction |
| 5 | V− | Negative supply pin - connect to GND for single-supply operation; sets lower analog voltage limit |
| 8 | GND | Digital ground reference - isolated from analog signal paths; required for logic-level translator biasing |
| 13 | V+ | Positive supply pin - powers analog switches and digital logic; internally tied to substrate |
| 16 | N.C. | No connection - not internally bonded; must be left floating or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Enables direct interfacing with op-amps, ADCs, and sensors operating at supply rails - no level-shifting needed |
| 100Ω max on-resistance with 12Ω flatness | Minimizes gain error and THD in audio and instrumentation paths across full signal swing |
| 4Ω max RON matching between channels | Supports precise multi-channel synchronization in data acquisition and phased-array systems |
| <1µW quiescent power | Extends battery life in portable medical devices and handheld test gear |
| Pin compatibility with DG211/DG212/DG213 | Enables drop-in replacement in legacy designs without PCB revision |
Applications
| Audio Signal Routing | Data Acquisition |
|---|---|
|
Use Scenario: Switching microphone inputs or headphone outputs in portable audio codecs. IC Role / Device Role / Timing Role: Quad NC analog switch routing low-noise audio paths with minimal crosstalk (<−90dB) and distortion. Use Value: Preserves SNR >90dB and THD <0.01% up to 20kHz due to low charge injection (1–5pC) and flat RON. |
Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a shared ADC channel. IC Role / Device Role / Timing Role: Low-leakage (1nA off-state) SPST switch isolating high-impedance sources during channel scanning. Use Value: Prevents measurement drift <0.1% FS by minimizing off-state current injection into 10MΩ+ sensor impedances. |
| Battery-Operated Equipment | Avionics Signal Conditioning |
|
Use Scenario: Power-gating unused analog subsystems in handheld multimeters and IoT edge nodes. IC Role / Device Role / Timing Role: Ultra-low-power NC switch enabling <1µW standby current while maintaining signal continuity. Use Value: Extends 2xAA battery life beyond 12 months in always-on monitoring modes via sub-µA I+/I−. |
Use Scenario: Redundant signal path selection in flight control interface units requiring fail-safe continuity. IC Role / Device Role / Timing Role: Radiation-tolerant (qualified to −55°C to +125°C variants) NC switch with >2kV ESD protection. Use Value: Ensures uninterrupted signal routing during EMI transients, validated per DO-160 Section 22 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4522CUE+ | Quad NO (normally open) configuration - conducts only when INx = 1; identical RON, leakage, and timing specs | Suitable where default-open safety state is required (e.g., power-down isolation) | Select MAX4522CUE+ when system logic demands active-high enable or failsafe open-circuit behavior |
| ADG1411BRUZ | Quad SPST, NO, 1.5Ω typical RON (lower), but higher 25nA off-leakage at +25°C and no NC option | Better for low-RON precision DAC buffering; less suitable for ultra-low-leakage sensor multiplexing | Choose ADG1411BRUZ only if RON <2Ω is mandatory and leakage <10nA is acceptable |
Compared with MAX4522CUE+, the MAX4521CUE+ provides guaranteed continuity at power-up (NC default), while ADG1411BRUZ trades leakage performance for lower on-resistance - making MAX4521CUE+ optimal for battery-critical, high-impedance signal routing where default closure is functionally required.
Availability
MAX4521CUE+ 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 and long production lifecycles.
Supply support for MAX4521CUE+ 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, rail-to-rail analog switching in space-constrained, power-sensitive applications - emphasizing precision matching, ultra-low leakage, and robust ESD tolerance.
FAQ
What is the default switch state of MAX4521CUE+?
The MAX4521CUE+ features four normally closed (NC) SPST switches. When all IN1–IN4 inputs are logic low (≤0.8V), the NC1–NC4 to COM1–COM4 paths are conductive. Applying logic high (≥2.4V) to any INx opens that specific switch. This default-closed behavior ensures signal continuity during power-up or logic reset - a key safety feature in MAX4521CUE+ deployments.
Can MAX4521CUE+ operate from a single +3V supply?
Yes, MAX4521CUE+ is fully specified for single +2.7V to +12V operation. At +3V supply (V+ = +3V, V− = GND), it delivers 600Ω max on-resistance and maintains 0.8V/2.4V logic thresholds. The device draws less than 1µA supply current, making MAX4521CUE+ ideal for coin-cell-powered sensors and wearables where low-voltage operation is essential.
Does MAX4521CUE+ require external ESD protection?
No. MAX4521CUE+ integrates >2kV ESD protection per Method 3015.7 on all analog and digital pins. Its internal diode-clamped architecture safely shunts transients to V+ and V−, eliminating need for discrete TVS diodes in most board-level ESD environments. This built-in protection is validated across the full temperature range and contributes to MAX4521CUE+'s qualification for avionics and industrial use.
How does MAX4521CUE+ handle rail-to-rail analog signals?
MAX4521CUE+ uses complementary N- and P-channel MOSFETs with gates driven by V+ and V−, enabling conduction from V− to V+ without ground reference. Signals applied to NCx or COMx terminals remain undistorted across the full supply range - verified to ±4.5V with ±5V supplies and 0V to +3.5V with +5V single supply. This rail-to-rail capability is intrinsic to MAX4521CUE+'s topology and requires no external biasing.
Is MAX4521CUE+ pin-compatible with industry-standard analog switches?
Yes, MAX4521CUE+ is pin-compatible with DG211, DG212, and DG213 in TSSOP-16 footprint. Pin assignments for INx, COMx, NCx, V+, V−, GND, and N.C. match exactly - allowing direct replacement in existing layouts. No PCB redesign or netlist changes are needed, preserving mechanical and thermal characteristics while upgrading to MAX4521CUE+'s lower leakage and improved ESD rating.
MAX4521CUE+ 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:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX4521CUE+ FAQ
1.How can I place an order for MAX4521CUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4521CUE+ 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 MAX4521CUE+ reliable?
The price and inventory of MAX4521CUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4521CUE+ is usually 5 days.
3.What payment methods are accepted for MAX4521CUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4521CUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4521CUE+?
MAX4521CUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4521CUE+ 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 MAX4521CUE+?
For technical support, including MAX4521CUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4521CUE+ requirements.
6.How does Aetrix verify that MAX4521CUE+ is sourced from the original manufacturer or authorized distributors?
All MAX4521CUE+ 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 MAX4521CUE+ meets industry standards.
7.What is the process for return or replacement of MAX4521CUE+?
All MAX4521CUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4521CUE+, 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 MAX4521CUE+ part is unused and in its original packaging.
Return procedure for MAX4521CUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4521CUE+ Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
