FEATURES
n n n n n SA589 LD/DTMF SWITCHABLE DIALLERS WITH DEDICATED KEYS FOR 20 MEMORIES Selectable Loop-Disconnect or DTMF Modes Keypad Switchable LD to DTMF 20 x 24-Digit Memories, (each with Dedicated Key) 24 Digit Last Number Redial Selectable Make/Break Ratios 2:1 and 3:2 n Uses Inexpensive 560kHz Ceramic Resonator n Batteryless operation - Low Power CMOS n Mask Programmable Options to suit application n Timed Break Recall (Flash) and Earth Recall DESCRIPTION
Three operating modes are available: LD only mode, DTMF only mode and LD mode with the ability to switch temporarily to DTMF mode from the keypad during a call. Mixed LD and DTMF numbers can also be stored in memory. Metal mask and pin selectable options are available to service specific requirements of particular countries and customers. FIG. 1 PIN CONNECTIONS SA589 NC COL6 IMP SELECT MASK OSC OUT OSC IN FILT IN FILT OUT HSW V V 1 2 3 4 5 6 7 8 9 10 11 SS DD 12 13 14 17 16 15 MFOUT COL7 ROW6 28 27 26 25 24 23 22 21 20 19 18 ROW7 COL5 COL4 ROW4 ROW3 ROW2 ROW1 COL3 COL2 COL1 MUTE PAUSE OUT ROW5 DR-00684 Package: DIP28 1/14 4120 PDS039-SA589-001 REV.
