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ISO7342CDWR
Texas Instruments
DGTL ISO 3000VRMS 4CH GP 16SOIC
17620 Pcs New Original In Stock
General Purpose Digital Isolator 3000Vrms 4 Channel 25Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
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ISO7342CDWR
Product Overview
1340736
DiGi Electronics Part Number
ISO7342CDWR-DGManufacturer
Texas Instruments
ISO7342CDWR
Description
DGTL ISO 3000VRMS 4CH GP 16SOICInventory
17620 Pcs New Original In Stock
General Purpose Digital Isolator 3000Vrms 4 Channel 25Mbps 25kV/µs CMTI 16-SOIC (0.295", 7.50mm Width)
Quantity
Minimum 1
Minimum 1
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ISO7342CDWR Technical Specifications
Category
Digital Isolators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Technology
Capacitive Coupling
Type
General Purpose
Isolated Power
No
Number of Channels
4
Inputs - Side 1/Side 2
2/2
Channel Type
Unidirectional
Voltage - Isolation
3000Vrms
Common Mode Transient Immunity (Min)
25kV/µs
Data Rate
25Mbps
Propagation Delay tpLH / tpHL (Max)
58ns, 58ns
Pulse Width Distortion (Max)
4ns
Rise / Fall Time (Typ)
2.1ns, 1.7ns
Voltage - Supply
3V ~ 5.5V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.295", 7.50mm Width)
Supplier Device Package
16-SOIC
Base Product Number
ISO7342
Datasheet & Documents
Manufacturer Product Page
ISO7342CDWR Specifications
HTML Datasheet
ISO7342CDWR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-41087-2
TEXTISISO7342CDWR
296-41087-1
296-41087-6
-296-41087-1-DG
2156-ISO7342CDWR
Standard Package
2,000
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Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
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de desembre 02, 2025
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Frequently Asked Questions (FAQ)
How does the ISO7342CDWR perform in high-noise industrial environments with fast voltage transients, and what design considerations should I take to ensure signal integrity?
The ISO7342CDWR offers a robust 25kV/µs minimum common-mode transient immunity (CMTI), making it well-suited for noisy industrial applications like motor drives or PLC I/O modules. However, to maintain signal integrity, ensure low-impedance ground paths on both sides of the isolation barrier and use 100nF ceramic bypass capacitors close to each supply pin. Avoid routing high-speed digital lines near sensitive analog nodes to prevent coupling through the capacitive isolation architecture. In high dv/dt environments (e.g., inverters), consider adding series resistors (10–47Ω) at outputs to damp ringing without exceeding propagation delay budgets.
Can the ISO7342CDWR replace the ADuM1401BRWZ in an existing 3.3V industrial controller design, and what are the key compatibility risks?
Yes, the ISO7342CDWR can serve as a functional replacement for the ADuM1401BRWZ in most cases, given matching 4-channel unidirectional configuration and supply range (3V–5.5V). However, note that the ADuM1401 uses magnetic coupling while the ISO7342CDWR uses capacitive coupling—this affects noise behavior: capacitive isolators may couple more high-frequency common-mode noise in poorly laid-out PCBs. Ensure guard rings and adequate creepage/clearance (≥6.3mm for 3000Vrms) are maintained. Also verify timing: the ISO7342CDWR's 58ns max propagation delay is comparable, but check system timing margins if operating near 25Mbps.
What are the thermal and layout risks when using the ISO7342CDWR in a compact, high-density PCB with multiple isolators operating at 25Mbps?
In dense layouts, cumulative self-heating from multiple ISO7342CDWR devices can approach thermal limits, especially at 5V supply and maximum data rates. Each channel dissipates ~1.5mW typically, but total power in a cluster can raise local temperature beyond 105°C, potentially degrading long-term reliability. Mitigate by using thermal vias under the exposed pad (if present—note: ISO7342CDWR has no thermal pad), spacing isolators apart, and avoiding stacking high-speed traces. Use 4-layer boards with solid ground planes to reduce crosstalk and control impedance for signals crossing the isolation barrier.
How reliable is the ISO7342CDWR for long-term operation in outdoor or automotive underhood applications near 125°C ambient temperature?
The ISO7342CDWR is rated for operation up to 125°C ambient and is AEC-Q100 qualified when used in automotive variants (e.g., ISO7342CQDWRQ1). For long-term reliability at high temperature, ensure the supply voltage remains stable, as aging effects on the SiO2 isolation barrier accelerate above 125°C. Limit time spent above 110°C where possible and avoid thermal cycling extremes. With proper PCB design (MSL2 handling, no condensation), expected lifetime exceeds 20 years at 3000Vrms when derated to 80% of rated voltage (2400Vrms) per TI’s lifetime models.
What are the risks of using the ISO7342CDWR without isolated power, and how can I safely integrate it in a system where isolated rails aren't available?
The ISO7342CDWR requires external isolated power since it does not integrate a DC-DC converter. Using a single supply defeats the purpose of galvanic isolation and risks ground loops or damage during fault conditions. If isolated power is missing, consider pairing the ISO7342CDWR with a low-emission isolated DC-DC converter (e.g., TI’s DCF0205D15) or use integrated-power alternatives like the Si88xx series. Ensure the isolated supply meets 3000Vrms rating and place it close to the isolator to minimize loop area, reducing EMI emissions from switching noise.
Quality Assurance (QC)
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ISO7342CDWR CAD Models
Texas Instruments ISO7342CDWR PCB symbols & footprints
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