name: HT93214DT function: 1-Memory Tone/Pulse Dialer package: SKDIP22,22 manufacturer: Holtek +--()--+ HFO | 1 22| HFIB HKSB | 2 21| R4B MODE | 3 20| R3B X1 | 4 19| R2B X2 | 5 18| R1B VSS | 6 17| C3B VDD | 7 16| C2B DTMF | 8 15| C1B XMUTEB | 9 14| POB MODEOB |10 13| KTB DOUT |11 12| CLOCK +------+ This pinout came from the Chipdir: http://www.chipdir.org/