My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4542CUA
- Part No.:
- MAX4542CUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4542CUA.pdf
- Description:
- IC SWITCH SPST-NCX2 60OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,491
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4542CUA from Maxim Integrated is a precision dual single-pole/single-throw (SPST) analog switch with normally closed (NC) configuration, operating from a single +2.7V to +12V supply. It delivers 60Ω max on-resistance, 2Ω max RON matching between channels, 5pC max charge injection, and guarantees break-before-make switching only in MAX4543/MAX4544 variants - not applicable here. It is used in battery-powered audio/video routing and low-voltage sample-and-hold circuits where low leakage and rail-to-rail analog signal handling are critical.
For engineers reviewing the MAX4542CUA datasheet, MAX4542CUA pinout, MAX4542CUA application, or MAX4542CUA equivalent, key selection criteria include its NC-switch topology, µMAX-8 package footprint, +2.7V to +12V single-supply operation, guaranteed TTL/CMOS logic compatibility at +5V, and absence of break-before-make timing - confirmed for MAX4542 in truth tables and functional diagrams.
Technical Context
The MAX4542CUA implements two independent NC SPST switches controlled by separate digital inputs (IN1, IN2), each connecting COMx to NCx when logic low and opening the path when logic high. Its CMOS transmission-gate architecture enables bidirectional analog signal flow across the full V+ to GND range with minimal RON variation (6Ω max flatness).
It features internal ESD protection (>2000V per Method 3015.7), operates with <5µW quiescent power, and maintains 10nA max COM off-leakage at +85°C. Unlike MAX4543/MAX4544, it does not incorporate break-before-make logic - confirmed in truth tables and functional descriptions specific to MAX4542.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V single supply - supports direct integration into 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal signal attenuation and voltage drop in precision analog paths. |
| RON Matching | 2Ω max between channels - critical for matched gain/attenuation in differential or dual-path signal conditioning. |
| Charge Injection | 5pC max - limits voltage glitch on sampled nodes in ADC front-ends and sample-and-hold circuits. |
| Leakage Current | 10nA max at +85°C - preserves signal integrity in high-impedance sensor interfaces and battery-critical standby modes. |
| Switching Speed | tON = 35ns, tOFF = 25ns at +5V - enables fast multiplexing in real-time signal routing applications. |
| Logic Compatibility | TTL/CMOS-compatible at +5V; rail-to-rail input support at other voltages - simplifies control interface design. |
Pinout & Package
MAX4542CUA is housed in an 8-pin µMAX package (pin pitch 0.65mm, body size 3.0mm × 3.0mm × 0.8mm), thermally enhanced with exposed pad connected to GND per standard layout practice.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply input - must be applied before analog or logic signals to prevent latch-up per sequencing guidelines. |
| 2 | IN1 | Digital control input for Switch 1 - active-low logic opens COM1–NC1 path when high. |
| 3 | COM2 | Analog common terminal for Switch 2 - bidirectional node connecting to NC2 when IN2 = low. |
| 4 | NC2 | Normally closed terminal for Switch 2 - internally connected to COM2 when IN2 = low; open when IN2 = high. |
| 5 | GND | Ground reference - return path for supply and signal; exposed pad must be soldered to PCB ground plane. |
| 6 | IN2 | Digital control input for Switch 2 - independent control enabling asynchronous channel switching. |
| 7 | COM1 | Analog common terminal for Switch 1 - bidirectional node connecting to NC1 when IN1 = low. |
| 8 | NC1 | Normally closed terminal for Switch 1 - completes path to COM1 under default (low-input) state. |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | 6Ω max variation over full analog signal range - maintains consistent gain/attenuation across 0V to V+. |
| Ultra-low power consumption | <5µW at +5V - extends battery life in portable medical monitors and handheld test equipment. |
| Guaranteed low charge injection | 5pC max - reduces settling error in precision sampling circuits interfacing with 12-bit+ ADCs. |
| High ESD robustness | >2000V per Method 3015.7 - improves field reliability in industrial I/O modules and unshielded connectors. |
| Wide supply voltage range | +2.7V to +12V operation - eliminates need for external regulators in mixed-voltage embedded systems. |
Applications
| Battery-Powered Audio Routing | Medical Sensor Multiplexing |
|---|---|
|
Use Scenario: Selecting between multiple microphone inputs in a portable ultrasound probe while minimizing power draw. IC Role / Device Role / Timing Role: Dual NC SPST switch routing analog mic signals to a shared amplifier/ADC path; no break-before-make required due to non-overlapping channel use. Use Value: 10nA max leakage at +85°C prevents DC offset drift in high-gain front-end stages during extended clinical sessions. |
Use Scenario: Time-division multiplexing of ECG, SpO₂, and temperature sensor outputs in a wearable patient monitor. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling of high-impedance biopotential sources with minimal crosstalk (-76dB off-isolation). Use Value: 5pC max charge injection avoids baseline wander in sub-mV ECG waveforms during acquisition. |
| Industrial PLC Analog Input Modules | Test Equipment Signal Path Switching |
|
Use Scenario: Configuring input ranges (±10V, 0–20mA, 4–20mA) via relayless analog switching in modular I/O cards. IC Role / Device Role / Timing Role: Dual-channel SPST switch isolating signal conditioning paths; NC topology provides fail-safe default connection during power loss. Use Value: 60Ω max RON and 2Ω matching ensure calibrated accuracy across all input ranges without software compensation. |
Use Scenario: Reconfiguring DUT signal paths in automated test fixtures for RF and mixed-signal IC validation. IC Role / Device Role / Timing Role: High-speed analog switch enabling <100ns channel transitions between stimulus and measurement nodes. Use Value: 35ns tON/25ns tOFF at +5V supports >10MHz multiplexing rates in high-throughput ATE systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4541CUA | Two normally open (NO) SPST switches vs. MAX4542CUA's NC topology; identical RON, leakage, and speed specs. | Used where default-open safety state is required (e.g., disabling power paths on startup); incompatible for NC-fail-safe designs. | Select MAX4541CUA only if circuit requires open-default behavior; pinout and package match enables layout reuse. |
| MAX4543CUA | One NO + one NC SPST switch; includes guaranteed break-before-make timing (2ns–10ns) - absent in MAX4542CUA. | Suitable for SPDT-equivalent functions requiring channel isolation during transition (e.g., audio crosspoint switching); adds complexity for pure dual-NC use. | Choose MAX4543CUA when break-before-make is mandatory; otherwise MAX4542CUA offers simpler control and lower cost for dedicated NC routing. |
Compared with MAX4541CUA and MAX4543CUA, the MAX4542CUA provides deterministic NC-default operation without break-before-make overhead - optimizing reliability in always-connected sensor interfaces and reducing firmware complexity in battery-constrained devices.
Availability
MAX4542CUA is available at Aetrix Electronics and suitable for battery-operated systems, medical sensor interfaces, and industrial PLC analog input modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4542CUA 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) designs precision analog and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX4541–MAX4544 family targets low-voltage, single-supply analog signal routing where low leakage, low distortion, and rail-to-rail operation are essential - especially in portable and high-reliability systems.
FAQ
What is the default switch state of MAX4542CUA when power is applied but control inputs are floating?
When IN1 and IN2 are left floating, internal weak pull-downs (confirmed in MAX4542 truth tables and functional diagrams) hold both inputs near GND, causing COM1–NC1 and COM2–NC2 paths to remain closed. This NC-default behavior ensures fail-safe connectivity in power-up sequences. For reliable operation, tie unused inputs to GND or V+ per design requirements; MAX4542CUA does not require external pull resistors for basic functionality.
Does MAX4542CUA support break-before-make switching between its two channels?
No, MAX4542CUA does not implement break-before-make logic. That feature is explicitly reserved for MAX4543 and MAX4544 variants per truth tables and Applications Information section. MAX4542CUA's two SPST switches operate independently: IN1 controls COM1–NC1, and IN2 controls COM2–NC2, with no timing coordination between them. Use MAX4543CUA if channel isolation during transition is required.
Can MAX4542CUA handle analog signals beyond the supply rails?
No, MAX4542CUA analog pins (COM1, COM2, NC1, NC2) are rated for signals from GND to V+, per Absolute Maximum Ratings and Analog Signal Range specifications. Exceeding V+ or going below GND risks forward-biasing internal clamping diodes and violating the -0.3V to (V+ + 0.3V) limit. For overvoltage-tolerant operation, external protection diodes (as shown in Figure 1) must be added - though this reduces usable signal range by ~0.7V.
What is the thermal performance of MAX4542CUA in the µMAX-8 package?
The MAX4542CUA in µMAX-8 has a thermal resistance θJA of 243°C/W (derating 4.10mW/°C above +70°C), yielding 330mW max continuous power dissipation at +70°C ambient. The exposed pad must be soldered to a PCB ground plane for effective heat transfer. At full 60Ω RON and 10mA load, power dissipation remains <6mW - well within safe limits even at +85°C ambient.
Is MAX4542CUA pin-compatible with legacy Maxim analog switches like MAX323?
Yes, MAX4542CUA is explicitly stated as pin-compatible with MAX323, MAX324, and MAX325 per the Features section. All share the same µMAX-8 pinout: V+ (1), IN1 (2), COM2 (3), NC2 (4), GND (5), IN2 (6), COM1 (7), NC1 (8). This allows drop-in replacement in existing designs, though designers must verify that the improved specs (lower RON, leakage, and charge injection) do not interact unexpectedly with legacy bias networks.
MAX4542CUA 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:
- 2
- On-State Resistance (Max):
- 60Ohm
- Channel-to-Channel Matching (ΔRon):
- 800mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 100ns, 75ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4542CUA FAQ
1.How can I place an order for MAX4542CUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4542CUA 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 MAX4542CUA reliable?
The price and inventory of MAX4542CUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4542CUA is usually 5 days.
3.What payment methods are accepted for MAX4542CUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4542CUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4542CUA?
MAX4542CUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4542CUA 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 MAX4542CUA?
For technical support, including MAX4542CUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4542CUA requirements.
6.How does Aetrix verify that MAX4542CUA is sourced from the original manufacturer or authorized distributors?
All MAX4542CUA 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 MAX4542CUA meets industry standards.
7.What is the process for return or replacement of MAX4542CUA?
All MAX4542CUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4542CUA, 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 MAX4542CUA part is unused and in its original packaging.
Return procedure for MAX4542CUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4542CUA 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…
