Tape & Reel (TR)'s materials are used for the packaging.
DS56S/T&R Features
DS56S/T&R Applications
There are a lot of Rochester Electronics, LLC DS56S/T&R applications of comparators.
Companion Appliceation Nole, ICAN-6374, "Application of the CMOS CD4059A Programmable Divide-by-N Counter in FM and Ctizens Band Transceiver Digital Tuners"
Fixed or programmable irequency division
Communications digltal frequency synthesizers: VHF, UHF, FM, AM, etc.
Process contollenr
“Time out" timer for consume-appication industrial controls