OVERVIEW

The SM8224B is a receiver and decoder that supports the Bellcore TR-NWT-000030 and SR-TSV-002476 standards calling number identification (caller ID) and call waiting dual-tone signals. It has separate caller ID signal and call waiting signal inputs, which allows the gain for each input to be adjusted independently. It is fabricated in CMOS and features a power-down function, realizing low power dissipation operation.

FEATURES

■ TR-NWT-000030 and SR-TSV-002476 standards (Bellcore)

■ Call waiting

■ FSK decoder

■ High input sensitivity

■ Independent input gain adjustment for caller ID signal and call waiting signal inputs

■ Power-down mode

■ Crystal oscillator circuit built-in

■ Single supply operation:4.5 to 5.5V

■ Molybdenum-gate CMOS process

APPLICATIONS

■ Telephones, fax machines and modems that support pre- and mid-conversation information services

■ Adapters for pre- and mid-conversation information service functions

■ Telephone answering machines

■ Facsimile machines

■ Computer peripheral equipment