SA589 Datasheet, PDF (1/14 Pages) Sames – LD/DTMF SWITCHABLE DIALLERS WITH DEDICATED KEYS FOR 20 MEMORIES

sames
SA589
LD/DTMF SWITCHABLE DIALLERS
WITH DEDICATED KEYS FOR 20 MEMORIES
FEATURES
n Selectable Loop-Disconnect or DTMF
Modes
n Keypad Switchable LD to DTMF
n 20 x 24-Digit Memories, (each with
Dedicated Key)
n 24 Digit Last Number Redial
n 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
The SA589 family are keypad switchable LD/
DTMF dialler devices with a last number
redial facility and twenty 24-digit memories
each with its own dedicated dialling key.
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. This last
mode enables subscribers to access such
services as home banking. Mixed LD and
DTMF numbers can also be stored in memory.
The SA589 devices are pin compatible with
the SAMES switchable dialler families SA541,
SA545, SA585, SA587 and SA588 - providing
a complete range of telephone features within
a single PCB and circuit design. Metal mask
and pin selectable options are available to
service specific requirements of particular
countries and customers.
FIG. 1 PIN CONNECTIONS
NC
1
COL6
2
IMP
3
SELECT
4
MASK
5
OSC OUT
6
OSC IN
7
FILT IN
8
FILT OUT
9
HSW
10
V
11
SS
V
12
DD
PAUSE OUT 13
ROW5
14
SA589
28 ROW7
27 ^COL5
26 COL4
25 ROW4
24 ROW3
23 ROW2
22 ROW1
21 COL3
20 ^COL2
19 COL1
18 ^MUTE
17 MFOUT
16 COL7
15 ^ROW6
DR-00684
Package:
DIP28
4120
PDS039-SA589-001
REV. C
1/14
09-03-1995