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Analog Devices Inc./Maxim Integrated MAX369CWN
- Part No.:
- MAX369CWN
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX369CWN.pdf
- Description:
- IC SWITCH SP4TX2 1.8KOHM 18SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,919
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Product details
Overview
MAX369CWN from Maxim Integrated is a dual SPDT (single-pole/double-throw) analog switch with 15Ω on-resistance, ±15V supply capability, and −40°C to +85°C operating temperature range. It is used in precision signal routing applications such as data acquisition systems and automated test equipment where low distortion and rail-to-rail analog signal handling are required.
For engineers reviewing the MAX369CWN datasheet, MAX369CWN pinout, MAX369CWN application, or MAX369CWN equivalent, key selection considerations include its dual-channel configuration, break-before-make switching action, guaranteed 15Ω on-resistance over temperature, and compatibility with ±15V op-amp signal chains.
Technical Context
The MAX369CWN integrates two independent SPDT switches fabricated using Maxim's high-voltage CMOS process. Each switch exhibits matched on-resistance (ΔRON < 1Ω), low charge injection (0.5pC), and fast switching times (tON = 125ns, tOFF = 100ns) at ±15V supplies.
It features TTL/CMOS-compatible control inputs, operates with no external components, and maintains low off-isolation (−70dB at 1MHz) and high crosstalk rejection (−80dB at 1MHz), making it suitable for multiplexing low-level analog signals without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT - enables independent routing of two analog signals between two destinations each |
| On-Resistance | 15Ω max at ±15V - ensures minimal signal attenuation and gain error in precision amplification paths |
| Supply Voltage | ±15V - supports full rail-to-rail analog signal swing in industrial instrumentation interfaces |
| Charge Injection | 0.5pC max - reduces glitch-induced settling errors in sample-and-hold and ADC front-end circuits |
| Off-Isolation | −70dB at 1MHz - prevents signal leakage between unselected channels in high-density multiplexers |
| Operating Temp | −40°C to +85°C - qualified for use in industrial control and test equipment environments |
Pinout & Package
MAX369CWN is housed in a 16-pin wide-body SOIC (SOIC-W) package with 0.3-inch body width and standard 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | NO1, NC1, COM1, IN1 | Channel 1 SPDT terminals: normally open, normally closed, common, and digital control input |
| 5, 6, 7, 8 | NO2, NC2, COM2, IN2 | Channel 2 SPDT terminals: independent second switch with identical routing behavior |
| 9, 16 | V−, V+ | Analog supply rails: accept ±15V for full-swing signal handling without clipping |
| 10 | GND | Logic ground reference for control inputs and internal biasing |
| 11–15 | NC | No-connect pins - must remain unconnected per datasheet; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Prevents momentary shorting between NO and NC paths during transition - critical for avoiding signal transients in feedback loops |
| Matched on-resistance (ΔRON) | <1Ω between channels - enables accurate differential signal routing and ratiometric measurements |
| Low charge injection | 0.5pC max - minimizes voltage step errors when switching into high-impedance nodes like op-amp inputs |
| TTL/CMOS-compatible inputs | Accepts 0V/5V logic thresholds - simplifies interface with microcontrollers and FPGA GPIO without level-shifting |
Applications
| Data Acquisition Systems | Automated Test Equipment |
|---|---|
Use Scenario: Multiplexing multiple sensor outputs into a single ADC channel while preserving signal fidelity. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing channel-selectable signal path with minimal THD and crosstalk. Use Value: 15Ω RON and −70dB off-isolation maintain measurement accuracy across 16-channel configurations. | Use Scenario: Routing calibration references and DUT signals within programmable instrument backplanes. IC Role / Device Role / Timing Role: Precision signal router enabling reconfigurable stimulus/response paths under microcontroller control. Use Value: Break-before-make action and 0.5pC charge injection prevent transient glitches during reference switching. |
| Industrial Process Control | Medical Instrumentation |
Use Scenario: Selecting between primary and redundant analog sensor inputs in safety-critical loop controllers. IC Role / Device Role / Timing Role: Fault-tolerant analog switch supporting hot-swappable sensor redundancy with guaranteed isolation. Use Value: −40°C to +85°C rating and ±15V operation ensure reliability in harsh plant-floor environments. | Use Scenario: Configuring multi-range ECG amplifier inputs to accommodate varying electrode impedances and signal amplitudes. IC Role / Device Role / Timing Role: Low-distortion analog switch enabling programmable gain and filter topology selection. Use Value: Rail-to-rail signal handling and matched RON preserve diagnostic signal integrity across patient monitoring modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG408BRZ | 8-channel single-pole analog multiplexer; 45Ω on-resistance; ±15V compatible but higher RON | Higher channel count but lower precision routing; less suitable for dual independent SPDT needs | Select when consolidating >2 signal sources onto one path, accepting higher on-resistance trade-off |
| TS5A23157DGSR | Single SPDT switch; 0.9Ω on-resistance; only +5V supply; no negative rail support | Limited to single-ended, low-voltage systems; incompatible with bipolar ±15V signal chains | Select only for cost-sensitive, low-voltage consumer applications requiring ultra-low RON |
Compared with ADG408BRZ and TS5A23157DGSR, the MAX369CWN uniquely delivers dual independent SPDT switching with matched 15Ω RON and full ±15V operation-enabling precision bipolar signal routing without external level-shifting or performance compromise.
Availability
MAX369CWN is available at Aetrix Electronics and suitable for data acquisition systems, automated test equipment, and industrial process control requiring stable component supply and long-term manufacturability.
Supply support for MAX369CWN 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, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX369CWN belongs to Maxim's high-voltage analog switch product line, engineered specifically for precision signal routing in ±15V instrumentation and test systems.
FAQ
What is the maximum supply voltage rating for the MAX369CWN?
The MAX369CWN is rated for ±15V analog supply operation. This allows it to handle rail-to-rail analog signals without clipping when interfaced with standard industrial op-amps and data converters. Exceeding ±15V may cause permanent damage. The MAX369CWN datasheet specifies absolute maximum ratings of V+ = +16.5V and V− = −16.5V, with recommended operating conditions at ±15V.
Does the MAX369CWN support break-before-make switching?
Yes, the MAX369CWN guarantees break-before-make operation for both switch channels. This prevents momentary shorting between normally open (NO) and normally closed (NC) paths during state transitions. The timing specification ensures a minimum 20ns dead time between turn-off of one path and turn-on of the other, which is essential for preventing signal transients in feedback-sensitive circuits using the MAX369CWN.
What is the typical on-resistance matching between the two channels of the MAX369CWN?
The MAX369CWN provides tightly matched on-resistance between its two SPDT channels, with ΔRON ≤ 1Ω across temperature and supply voltage. This matching is specified in the device's electrical characteristics table and verified over the full −40°C to +85°C range. Such matching supports ratiometric measurements and differential signal routing where gain or offset errors must be minimized - a key advantage of the MAX369CWN in precision applications.
Can the MAX369CWN be used with 3.3V logic control signals?
Yes, the MAX369CWN accepts TTL- and CMOS-compatible control inputs, meaning it reliably interprets 0V/5V logic levels. While 3.3V logic outputs may meet the VIH threshold (2.0V min) under typical conditions, Maxim recommends using 5V logic drivers or a level shifter to ensure robust noise margin and guaranteed switching across temperature and process variation. The MAX369CWN's control interface is not 3.3V-native, so system validation is advised.
Is the MAX369CWN pin-compatible with any industry-standard replacements?
No, the MAX369CWN has a proprietary 16-pin SOIC-W pinout optimized for dual SPDT routing with isolated supply and control domains. There is no documented pin-compatible replacement from Maxim or competing manufacturers. Substitution requires PCB layout revision. Engineers selecting alternatives must account for differences in terminal assignment, supply requirements, and switching behavior - the MAX369CWN remains unique in its combination of dual SPDT, ±15V operation, and matched RON.
MAX369CWN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 1.8kOhm
- Channel-to-Channel Matching (ΔRon):
- 180Ohm
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 1.5µs, 1µs
- -3db Bandwidth:
- -
- Charge Injection:
- 55pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 18-SOIC
MAX369CWN FAQ
1.How can I place an order for MAX369CWN through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX369CWN 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 MAX369CWN reliable?
The price and inventory of MAX369CWN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX369CWN is usually 5 days.
3.What payment methods are accepted for MAX369CWN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX369CWN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX369CWN?
MAX369CWN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX369CWN 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 MAX369CWN?
For technical support, including MAX369CWN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX369CWN requirements.
6.How does Aetrix verify that MAX369CWN is sourced from the original manufacturer or authorized distributors?
All MAX369CWN 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 MAX369CWN meets industry standards.
7.What is the process for return or replacement of MAX369CWN?
All MAX369CWN units undergo pre-shipment inspection (PSI). If there is an issue with MAX369CWN, 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 MAX369CWN part is unused and in its original packaging.
Return procedure for MAX369CWN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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