There is a package 28-SSOP (0.154, 3.90mm Width) containing the ICs.In order to mount integrated circuit, integrated circuit is done in the way of Surface Mount.The LTCK013 family contains similar integrated circuit systems.
LTCK013#PBF Features
LTCK013#PBF Applications
There are a lot of Linear Technology/Analog Devices LTCK013#PBF Specialized ICs applications.
μP Switch Interfacing
Portable Instruments
All converters requiring very low standby power
PDAs and Palmtop Devices
Printer Cartridge Identification and Authentication