STMicroelectronics MK53761
The MK53761 is a Silicon Gate CMOS IC that provides necessary signals for either DTMF or loop disconnect (pulse) dialing. The MK53761 buffers up to 18 digits into memory that can be later redialed with a single key input. These functions include : Last Number Dialed (LND), Softswitch, and Flash.| Part No. | MK53761 |
|---|---|
| Datasheet | MK53761 Download |
| Manufacturer |  STMicroelectronics |
| Description | REPERTORY DIALER |
| Buy | Stock & Price |
APPLICATIONS
DIP18 SO20 ORDERING NUMBERS : MK53761N00 MK53761D Figure 1 : Pin Connections. V+ MODE C1 C2 C3 VOSC1 OSC2 1 2 3 4 5 6 7 8 9 D93TL017 18 17 16 15 14 13 12 11 10 PULSE OUTPUT HKS R1 R2 R3 R4 MUTE OUTPUT PACIFIER TONE/ CHIP DISABLE DTMF OUTPUTDESCRIPTION
Up to nine repertory numbers may be stored. Users can store all 12 signaling keys and access several unique functions with single key entries. Figure 2 shows the keypad configuration. A LND key input automatically redials the last number dialed. The PROG key provides an easy way to program a number into any memory location (1-9) whether on-hook on off-hook. The MEM key allows easy redialing of the number stored in memory locations (1-9). The FLASH key simulates a 560 ms hook flash to transfer calls or to activate other special features provided by the PABX or a central office. July 1993 C4 DIP18 V+ MODE C1 C2 C3 VOSC1 OSC2 C4 N.C. 1 2 3 4 5 6 7 8 9 10 D93TL018 20 19 18 17 16 15 14 13 12 11 PULSE OUTPUT HKS R1 R2 R3 R4 MUTE OUTPUT PACIFIER TONE/ CHIP DISABLE DTMF OUTPUT N.C.
