My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4521CSE
- Part No.:
- MAX4521CSE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4521CSE.pdf
- Description:
- IC SW SPST-NCX4 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,953
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4521CSE 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 front-ends. 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 systems with minimal signal distortion.
For engineers reviewing the MAX4521CSE datasheet, MAX4521CSE pinout, MAX4521CSE application, or MAX4521CSE equivalent, key selection criteria include its NC configuration, 16-pin narrow SO package, guaranteed 1nA COM off-leakage at +25°C, rail-to-rail analog handling up to ±4.5V, and pin compatibility with DG211 - critical for legacy analog multiplexer upgrades and low-power sensor interface designs.
Technical Context
The MAX4521CSE implements four independent CMOS transmission gates, each with paralleled N- and P-channel MOSFETs driven by phase-inverted V+ and V− signals via internal level translators. Its analog path operates without ground reference, bounded only by V+ and V−, enabling true bipolar signal switching.
All digital inputs feature fixed +0.8V/2.4V thresholds - ensuring reliable logic recognition across ±5V or +5V supplies - while ESD protection (>2kV per Method 3015.7) and clamping diodes safeguard against overvoltage transients on NC/COM pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 100Ω max at ±5V supplies - ensures minimal insertion loss and voltage drop in signal paths up to ±4.5V. |
| On-resistance match (ΔRON) | 4Ω max between channels - enables precise gain/offset matching in multi-channel instrumentation. |
| Off-leakage current (ICOM_OFF) | 1nA at +25°C, 10nA at +85°C - preserves accuracy in high-impedance sensor and sample-hold circuits. |
| Supply range | +2V to +12V single or ±2V to ±6V dual - supports portable, industrial, and avionics power architectures without level-shifting. |
| Logic thresholds | +0.8V low / +2.4V high - guarantees interoperability with standard TTL and CMOS outputs at +5V supply. |
| Turn-on/off time | 40ns/15ns typical at ±4.5V - suitable for multiplexing audio and medium-speed data acquisition signals. |
| ESD rating | >2kV per Method 3015.7 - provides robust handling during board assembly and field operation. |
Pinout & Package
MAX4521CSE is housed in a 16-pin narrow SO (SOIC-N) package (S16-2), 3.9mm × 9.9mm body, 1.27mm pitch, with exposed pad not present (non-QFN variant). Pin 1 is NC (not connected); pins 2 and 5 are V− and GND respectively; pins 11 and 13 are V+ and N.C.; all INx/COMx/NCx pins are arranged for compact PCB layout of four independent NC switches.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | NC1–NC4 | Normally closed analog terminals - connect to signal source when INx = logic low; no internal connection to GND or substrate. |
| 2, 15, 10, 7 | COM1–COM4 | Common analog terminals - bidirectional signal path; interchangeable with NC/NO pins per datasheet note. |
| 3, 14, 11, 6 | IN1–IN4 | Digital control inputs - active-low logic controls NC state; compatible with 0.8V/2.4V thresholds at +5V supply. |
| 5 | GND | Digital ground reference - isolated from analog signal path; required for logic-level translator biasing. |
| 2 | V− | Negative analog supply - sets lower bound of rail-to-rail signal range; connects to GND for single-supply operation. |
| 11, 13 | V+ | Positive analog/digital supply - powers internal switches and logic; internally tied to substrate. |
| 1, 12 | N.C. | No internal connection - must be left floating or grounded per layout best practices; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input 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 and linearity in audio and measurement paths. |
| Ultra-low power consumption | <1µW typical supply current - extends battery life in portable test equipment and IoT edge nodes. |
| Pin compatibility with DG211 | Direct PCB replacement for industry-standard quad SPST NC switch - reduces redesign effort and qualification time. |
| High off-isolation | <−90dB at 100kHz - minimizes crosstalk between channels in multi-signal routing applications like avionics I/O. |
Applications
| Audio Signal Routing | Data Acquisition Systems |
|---|---|
|
Use Scenario: Switching microphone inputs or headphone outputs in portable audio devices with variable supply rails. IC Role / Device Role / Timing Role: Quad NC analog switch providing low-distortion, bidirectional signal path selection under microcontroller GPIO control. Use Value: 100Ω RON and <−90dB off-isolation preserve THD <0.01% at 1kHz, while 1nA leakage prevents DC offset drift in AC-coupled paths. |
Use Scenario: Multiplexing sensor outputs (thermocouples, strain gauges) into a shared ADC in industrial PLC modules. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling of four high-impedance sources without loading or charge injection errors. Use Value: 4Ω ΔRON matching ensures channel-to-channel gain consistency; 12Ω RFLAT(ON) maintains linearity across ±2.5V input spans. |
| Battery-Operated Test Equipment | Avionics Signal Conditioning |
|
Use Scenario: Configuring input ranges and signal paths in handheld multimeters or portable oscilloscope probes. IC Role / Device Role / Timing Role: Low-power SPST switch selecting attenuation networks, calibration references, or sensor excitation paths. Use Value: <1µW quiescent power extends runtime; ±2V to ±6V dual-supply support enables direct integration with op-amp front-ends. |
Use Scenario: Routing discrete analog signals (position sensors, temperature monitors) in flight control interface units. IC Role / Device Role / Timing Role: Radiation-tolerant (per MIL-PRF-38535 qualified variants) analog switch managing redundant signal paths. Use Value: >2kV ESD protection meets DO-160 Section 22 requirements; 10nA leakage at +85°C ensures reliability in extended thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4522CSE | Quad NO (normally open) configuration vs. MAX4521CSE's NC - requires inverted logic control for same functional behavior. | Suitable where default-open safety state is required (e.g., power-off signal isolation). | Select MAX4522CSE only if system logic naturally drives high to enable signal path; otherwise, MAX4521CSE avoids external inverters. |
| ADG1411BRUZ | Lower 1.3Ω typical RON but higher 12µA supply current; requires ≥±4.5V dual or ≥9V single supply - incompatible with +3V-only systems. | Better for high-precision, low-distortion applications where power budget allows; not suitable for ultra-low-power or sub-+5V designs. | Choose ADG1411BRUZ only when RON <2Ω is mandatory and supply headroom permits - MAX4521CSE remains optimal for +2.7V–+5V battery operation. |
Compared with MAX4522CSE and ADG1411BRUZ, the MAX4521CSE uniquely balances ultra-low leakage (1nA), sub-1µW power, and wide supply flexibility (+2V to +12V), making it the preferred choice for portable, thermally constrained, and legacy-compatible analog routing where NC default state is required.
Availability
MAX4521CSE is available at Aetrix Electronics and suitable for battery-operated equipment, data acquisition modules, and avionics signal conditioning requiring stable component supply across commercial temperature range (0°C to +70°C).
Supply support for MAX4521CSE 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, communications, and consumer applications.
The MAX4521/MAX4522/MAX4523 family was engineered for low-voltage, low-leakage analog signal routing in space-constrained, power-sensitive systems - emphasizing rail-to-rail operation, logic compatibility, and robust ESD protection without external components.
FAQ
What is the maximum analog signal voltage range supported by the MAX4521CSE?
The MAX4521CSE supports rail-to-rail analog signals from V− to V+, with absolute limits of (V− − 0.3V) to (V+ + 0.3V). At ±5V supplies, this delivers a usable range of ±4.5V; with +5V single supply (V− = GND), the range is 0V to +4.5V. Exceeding these bounds risks forward-biasing internal ESD diodes and increasing leakage.
Is the MAX4521CSE pin-compatible with the DG211 analog switch?
Yes, the MAX4521CSE is explicitly documented as pin-compatible with the industry-standard DG211. Both use identical 16-pin SO packages and share matching pin functions: IN1–IN4, COM1–COM4, NC1–NC4, V+, V−, GND, and N.C. This allows direct replacement without PCB modification in existing DG211-based designs.
What is the typical on-resistance flatness of the MAX4521CSE over its signal range?
The MAX4521CSE exhibits ≤12Ω on-resistance flatness (RFLAT(ON)) over its specified analog signal range - defined as the difference between maximum and minimum RON values measured across the full VCOM span. This tight flatness ensures minimal gain variation and harmonic distortion in audio and precision measurement applications.
Can the MAX4521CSE operate from a +3.3V single supply?
Yes, the MAX4521CSE is fully specified for single +2.7V operation. At +3.3V supply, it delivers 260Ω typical RON (max 500Ω), 1.6V/2.4V logic thresholds, and 120ns/40ns typical tON/tOFF - meeting requirements for low-voltage portable systems while maintaining 1nA leakage and rail-to-rail signal handling from 0V to +3.0V.
How does the MAX4521CSE handle ESD protection, and what is its rating?
The MAX4521CSE integrates >2kV ESD protection per Method 3015.7 on all analog and digital pins, achieved via internal diode clamps to V+ and V−. This eliminates need for external TVS devices in most board-level ESD scenarios and ensures robustness during handling, assembly, and field operation in industrial and avionics environments.
MAX4521CSE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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-SOIC
MAX4521CSE FAQ
1.How can I place an order for MAX4521CSE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4521CSE 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 MAX4521CSE reliable?
The price and inventory of MAX4521CSE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4521CSE is usually 5 days.
3.What payment methods are accepted for MAX4521CSE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4521CSE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4521CSE?
MAX4521CSE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4521CSE 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 MAX4521CSE?
For technical support, including MAX4521CSE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4521CSE requirements.
6.How does Aetrix verify that MAX4521CSE is sourced from the original manufacturer or authorized distributors?
All MAX4521CSE 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 MAX4521CSE meets industry standards.
7.What is the process for return or replacement of MAX4521CSE?
All MAX4521CSE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4521CSE, 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 MAX4521CSE part is unused and in its original packaging.
Return procedure for MAX4521CSE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4521CSE 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…
