This is a user-forum and I question if this is the right place to give you an answere you may rely on. Since the CYRF7936 looks quite normal, is not very complicated settled in a family of a dozend related chips from which none is obsolete right now I do not see any reasons against the CYRF7936.I (personally) would go for a chip supporting LPStar, since this contains an MCU that supports the Star-protocol which may help you to organize several transmitters in a network.
There are several ways to confirm current vendor support for a product -
1) Contact your local Manufacturers Rep and they will call marketing person
responsible for product line. Put together a list of questions, like -
- How long has product been manufactured, tells you what cycle the
chip is in of its expected life.
- Where is chip manufactured, off shore, fab name.......
- Anticipated life of product.
- Ask how successful is the product, eg. how many designs, any major
recognizable end manufacturer names consuming it......
- Is chip easily substituted for another chip in production. This is tenuous
of course since you are dealing with RF design, but ask anyways.
2) File a support case at www.cypress.com and ask that question.
3) You call factory direct, and ask for wireless marketing.
All the above are good ideas for you to execute -
a) You make Cypress aware of your planned design, estimated product usage,
b) You have individual contacts you can call upon for the business side, always a plus.