My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4542CPA
- Part No.:
- MAX4542CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4542CPA.pdf
- Description:
- IC SWITCH SPST-NC X 2 60OHM 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,028
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4542CPA from Maxim Integrated is a dual normally closed (NC) single-pole/single-throw (SPST) analog switch operating from a single +2.7V to +12V supply. It delivers 60Ω max on-resistance, 2Ω max RON matching between channels, and 5pC max charge injection - enabling precision signal routing in low-power, battery-operated instrumentation. Its 100pA max leakage and guaranteed break-before-make timing (in SPDT variants) are not applicable here, but its NC configuration supports fail-safe signal blocking in power-sensitive audio and sensor front-ends.
For engineers reviewing the MAX4542CPA datasheet, MAX4542CPA pinout, MAX4542CPA application, or MAX4542CPA equivalent, key selection criteria include its dual NC topology, 8-pin Plastic DIP package, +2.7V to +12V single-supply operation, 60Ω max RON, and compatibility with TTL/CMOS logic levels across voltage ranges - critical for legacy industrial control and test equipment design.
Technical Context
The MAX4542CPA implements two independent NC SPST switches using CMOS transmission-gate architecture, with logic-controlled channel conduction that defaults to closed (low-impedance path) when input is logic low. Its internal structure ensures symmetrical analog signal handling - bidirectional operation, rail-to-rail analog voltage support (GND to V+), and minimal RON flatness (6Ω max) over full signal range.
It features integrated ESD protection (>2000V per Method 3015.7), operates without external biasing, and maintains <5µW quiescent power consumption at +5V. Unlike the MAX4543/MAX4544, it does not implement break-before-make switching - consistent with its dual-NC SPST functional definition and truth table behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +12V single supply - enables direct integration into 3.3V, 5V, and 12V systems without level-shifting. |
| On-Resistance (RON) | 60Ω max at +5V - ensures minimal signal attenuation and gain error in precision analog paths. |
| RON Matching | 2Ω max between channels - preserves amplitude balance in dual-channel applications like stereo audio or differential sensing. |
| Charge Injection | 5pC max - reduces glitch-induced settling errors in sample-and-hold and multiplexed ADC front-ends. |
| Leakage Current | 100pA max at +25°C - maintains high-impedance integrity in sensor interfaces and battery-monitoring circuits. |
| Switching Speed | tON = 150ns max, tOFF = 100ns max - supports medium-speed signal routing up to ~1MHz bandwidth. |
| Logic Compatibility | TTL/CMOS-compatible inputs - accepts 0.8V/2.4V thresholds at +5V, and rail-to-rail logic drive at other supplies. |
Pinout & Package
MAX4542CPA uses an 8-pin Plastic Dual In-line Package (PDIP) with standard through-hole mounting. Pin 1 is top-left corner (notch side), and pin numbering follows counter-clockwise convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO1) | Analog Switch 1 - Normally Open terminal | Open-circuit node when switch is inactive; connects to COM1 only during logic-high enable - unused in NC configuration but electrically present. |
| 2 (COM1) | Analog Switch 1 - Common terminal | Main signal path node for Channel 1; bidirectional, supports rail-to-rail analog signals (GND to V+). |
| 3 (IN2) | Digital Control Input 2 | Inverts logic sense: low = closed (NC path active), high = open - controls Channel 2 independently. |
| 4 (GND) | Ground reference | System ground return for analog and digital domains; must be low-impedance for leakage and noise control. |
| 5 (IN1) | Digital Control Input 1 | Inverts logic sense: low = closed (NC path active), high = open - controls Channel 1 independently. |
| 6 (COM2) | Analog Switch 2 - Common terminal | Main signal path node for Channel 2; electrically identical to COM1, enabling matched dual-channel routing. |
| 7 (NC2) | Analog Switch 2 - Normally Closed terminal | Default-connected node to COM2 when IN2 = low; provides fail-safe continuity in unpowered or logic-low states. |
| 8 (V+) | Positive Supply Input | Single power rail for analog and digital circuitry; absolute max rating is +13V; requires local decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual NC SPST topology | Ensures default-closed signal path - critical for safety-critical or power-loss scenarios where continuity must be maintained. |
| 6Ω max RON flatness | Maintains consistent gain and linearity across full analog input range (0V to V+), reducing harmonic distortion in audio paths. |
| 10nA max off-leakage at +85°C | Preserves accuracy in high-impedance sensor nodes (e.g., pH electrodes, thermopiles) over industrial temperature range. |
| 2000V ESD protection (HBM) | Eliminates need for external TVS diodes in board-level ESD zones, simplifying layout in handheld test gear. |
| Pin compatibility with MAX323/MAX324/MAX325 | Enables drop-in replacement in legacy designs using those older Maxim analog switches - no PCB rework required. |
Applications
| Battery-Powered Medical Sensors | Industrial Analog Multiplexing |
|---|---|
|
Use Scenario: Routing thermistor or strain gauge signals to a shared ADC in portable patient monitors. IC Role / Device Role / Timing Role: Dual NC switch isolates unused sensors while maintaining low-impedance path for active channel - minimizing offset drift and power consumption. Use Value: 100pA max leakage prevents measurement corruption; 60Ω RON ensures <0.1% gain error at 10kΩ source impedance. |
Use Scenario: Selecting between multiple 4–20mA current loop transmitters in PLC I/O modules. IC Role / Device Role / Timing Role: Fail-safe NC configuration guarantees signal continuity during controller reset or firmware update. Use Value: +12V operation supports industrial supply rails; 2Ω RON matching ensures channel-to-channel consistency in calibration routines. |
| Audio Signal Muting | Legacy Test Equipment Signal Routing |
|
Use Scenario: Muting left/right audio channels in professional audio mixers during power-up or fault conditions. IC Role / Device Role / Timing Role: NC configuration provides default-conductive path; logic high opens channel to mute - eliminating pop/click artifacts. Use Value: 5pC max charge injection prevents audible click transients; rail-to-rail analog range handles ±2.5V audio swing. |
Use Scenario: Replacing discrete relays or older analog switches in aging ATE systems requiring long-term component availability. IC Role / Device Role / Timing Role: Direct pin-compatible upgrade for MAX323-based signal matrices - preserving existing schematics and layouts. Use Value: 8-pin PDIP footprint matches legacy sockets; 60Ω RON meets accuracy specs for DC-coupled calibration paths. |
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 |
|---|---|---|---|
| MAX4542CSA | Same electrical specs, but in 8-pin SOIC package - smaller footprint, surface-mount only. | Suitable for space-constrained PCBs; thermal resistance differs (SOIC dissipates heat more efficiently than PDIP). | Select MAX4542CSA for new SMT designs; MAX4542CPA remains optimal for through-hole prototyping, repair, or legacy board compatibility. |
| MAX323CPA | Older generation: 35Ω max RON, higher 20nA leakage at +85°C, no guaranteed 2000V ESD rating. | Acceptable in non-critical, low-temp environments; lacks modern leakage and ESD robustness. | MAX4542CPA offers superior leakage, ESD, and flatness - choose it for medical, industrial, or long-lifecycle deployments. |
Compared with MAX4542CSA, MAX4542CPA provides identical functionality in a through-hole package ideal for manual assembly and field repair; compared with MAX323CPA, it delivers significantly lower leakage, enhanced ESD protection, and tighter RON matching - justifying upgrade in performance-sensitive applications.
Availability
MAX4542CPA is available at Aetrix Electronics and suitable for battery-powered medical sensors, industrial analog multiplexing, and legacy test equipment requiring stable component supply and long-term obsolescence management.
Supply support for MAX4542CPA 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 and mixed-signal ICs for industrial, communications, and consumer applications.
The MAX4541–MAX4544 family was designed specifically for low-voltage, single-supply analog switching in portable and space-constrained systems - emphasizing ultra-low power, precision RON, and robust ESD tolerance.
FAQ
What is the logic polarity of the MAX4542CPA control inputs?
The MAX4542CPA uses inverted logic: a logic-low input (≤0.8V) closes the NC switch (connects COMx to NCx), while a logic-high input (≥2.4V at +5V supply) opens it. This behavior is inherent to its NC SPST architecture and is confirmed in the truth table and pin description sections of the datasheet. The MAX4542CPA does not require external pull-ups or level shifters for standard TTL/CMOS drivers.
Does the MAX4542CPA support rail-to-rail analog signals?
Yes, the MAX4542CPA supports analog signals from GND to V+ across its COM, NC, and NO terminals - verified by the "Analog Signal Range" specification (0V to V+) and typical operating curves showing stable RON over full voltage range. This rail-to-rail capability applies at all valid supply voltages (+2.7V to +12V) and is essential for interfacing with op-amps, DACs, and sensors operating near supply rails.
Is the MAX4542CPA pin-compatible with the MAX323 series?
Yes, the MAX4542CPA is explicitly stated as pin-compatible with MAX323, MAX324, and MAX325 in the datasheet's Features section. Its 8-pin PDIP footprint, pin functions (V+, IN1, COM2, NC2, GND, IN2, COM1, NC1), and logic behavior match - enabling direct replacement in legacy designs without PCB modification or schematic updates.
What is the maximum allowable supply voltage for the MAX4542CPA?
The absolute maximum supply voltage for the MAX4542CPA is +13V, as specified in the Absolute Maximum Ratings table. Continuous operation above +12V is not recommended; the device is characterized and guaranteed for reliable operation from +2.7V to +12V. Exceeding +13V risks permanent damage, even momentarily, due to internal junction breakdown.
How does the MAX4542CPA handle ESD events?
The MAX4542CPA provides >2000V human-body-model (HBM) ESD protection per Method 3015.7 on all pins - a tested and guaranteed specification, not a typical value. This eliminates the need for external ESD protection components in most end-equipment environments and ensures robustness during handling, assembly, and field operation - particularly valuable in handheld or benchtop test instruments.
MAX4542CPA 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX4542CPA FAQ
1.How can I place an order for MAX4542CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4542CPA 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 MAX4542CPA reliable?
The price and inventory of MAX4542CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4542CPA is usually 5 days.
3.What payment methods are accepted for MAX4542CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4542CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4542CPA?
MAX4542CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4542CPA 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 MAX4542CPA?
For technical support, including MAX4542CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4542CPA requirements.
6.How does Aetrix verify that MAX4542CPA is sourced from the original manufacturer or authorized distributors?
All MAX4542CPA 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 MAX4542CPA meets industry standards.
7.What is the process for return or replacement of MAX4542CPA?
All MAX4542CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4542CPA, 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 MAX4542CPA part is unused and in its original packaging.
Return procedure for MAX4542CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4542CPA 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…
