OVERVIEW
The SM8222A/B is a calling number identification (caller ID) and call waiting signal (dual tone signal) receiver decoder IC that conforms with the TRNWT-000030 and SR-TSV-002476 (Bellcore) dialer telephone number display standards. It is implemented in CMOS and incorporates a power-down function for low power operation.

FEATURES
■ Conforms to TR-NWT-000030 and SR-TSV- 002476 (Bellcore) standards
■ Call waiting
■ FSK demodulator
■ Ring signal detect circuit built-in
■ High input sensitivity
■ Input gain adjust circuit built-in
■ Power-down mode
■ Crystal oscillator circuit built-in
■ Single supply operation
■ Microcontroller I/O interface
■ Molybdenum-gate CMOS process
■ 24-pin SOP and 24-pin DIP packages
■ SM8222A : 2.7 to 3.3V operation
■ SM8222B : 4.5 to 5.5V operation

APPLICATIONS
■ Telephones that display dialer number before and during conversation
■ Adapters to display dialer number before and during conversation
■ Answering machines
■ Facsimile machines
■ Computer peripheral devices