Description
Latest generation DTMF Encoder chip made by Holtek.It is a CMOS/LSI for communications systems/applications * Operating voltage : 2 to 5.5 V DC * Low stanby current. * Low memory retention(0,1mA typ.) * Tone/pulse switchable. * Interface with LCD driver. * 32 digits for redialing. * One key redialing. * Pause and P-T key for PBX. * 4X5 keyboard matrix. * 3.58 crystal or ceramic res. * Hold line control. * Lock function * Keytone function. * Various transistor combinations(programming). * DTMF output 100 mV rms. KINDLY NOTE! ATTACHED PICTURE WAS TAKEN FROM THE REAL THING YOU ARE GOING TO PURCHASE AND IT DOES NOT COME FROM ARCHIVES!
