sames
FEATURES
SA589
LD/DTMF SWITCHABLE DIALLERS
WITH DEDICATED KEYS FOR 20 MEMORIES
n
Selectable Loop-Disconnect or DTMF
n
Uses Inexpensive 560kHz Ceramic
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
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
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. C
09-03-1995
SAMES [ SAMES ]
