SM8223A is FSK Decoder and DTMF Receiver manufactured by Nippon Precision Circuits Inc.
| Part Number | Description |
|---|---|
| SM8223B | NIPPON PRECISION CIRCUITS INC. FSK Decoder and DTMF Receiver IC |
| SM8220 | Calling Number Identification Receiver |
| SM8221 | Calling Number Identification Receiver |
| SM8222A | Caller ID Service |
| SM8224B | Dual-Tone Receiver |
Number 1 2 3 4 5 6 7 Name TIP RING GS AG N D RDIN RDRC RDET I/O I I O O I I/O O Function Tip input. Connected to the telephone line through a protection circuit Ring input. Connected to the telephone line through a protection circuit Input-stage amplifier gain-select output.
