name: MT8870 function: DTMF-receiver package: DIL18,18 manufacturer: added-by: snif +--()--+ IN+ | 1 18| Vdd IN- | 2 17| St/GT GS | 3 16| ESt Vref | 4 15| StD INH | 5 14| Q4 PDWN | 6 13| Q3 OSC1 | 7 12| Q2 OSC2 | 8 11| Q1 Vss | 9 10| TOE +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/