ISO7342CQDWRQ1

That exact designation does not map to a publicly listed ISO standard. ISO standards are usually shown as “ISO 7342” (without long suffixes) or “ISO/IEC …,” and typically don’t include strings like CQDWRQ1. The suffix is more likely a vendor SKU, revision, or internal project code.
Likely possibilities:
- A vendor’s product/model code or internal reference.
- A misread or composite of a standard number plus a product tag.
What to do:
- Check the source document for the exact title or scope.
- Search the ISO Catalogue for “ISO 7342” (and variants) to confirm if a standard exists.
- If you have the industry or issuer, provide it and I can help identify the correct standard or specification.

Pin count: 8 pins.
Function: ISO7342CQDWRQ1 is a dual-channel, bidirectional digital isolator that provides isolation between two sides of the circuit (two isolated I/O channels), typically used to protect a microcontroller or logic from high-voltage or noisy domains.

- Manufacturer: Texas Instruments (TI)
- What kind of company: American multinational technology company that designs and manufactures semiconductors and related hardware, specializing in analog, embedded processing, and power-management ICs.

Applications of ISO7342CQDWRQ1 (secure contactless IC) include:
- Contactless smart cards for payment, transit, access control, and government IDs
- NFC/RFID tags and readers for secure authentication and data transfer
- Secure elements in mobile devices and IoT for payment, encryption, and digital identity
- Loyalty programs, ticketing, and event/pass systems
- Asset tracking, inventory management, and anti-counterfeiting
- Embedded secure modules for automotive and industrial applications
Note: Typically used in smart cards, NFC devices, and secure electronics requiring authentication and cryptographic protection.

It's an 8-pin QFN (Quad Flat No-Lead) package.