W91570DN SERIES
Publication Release Date: May 1997
- 17 -
Revision A2
3. If there had been n cascaded sequences with a total of 60 digits dialed, then for the (n+1)th
cascaded sequence, one 4-digit normal dialing sequence or one complete repertory dialing
sequence (length up to 32 digits) can be dialed. The (n+2)th sequence will not be accepted for
cascaded dialing.
4. After a total of 64 digits of cascaded dialing have been completed, mixed dialing can be added.
ABSOLUTION MAXIMUM RATINGS
PARAMETER
SYMBOL
RATING
UNIT
DC Supply Voltage
V
DD
−
V
SS
-0.3 to +7.0
V
V
IL
V
SS
−
0.3
Input/Output Voltage
V
IH
V
DD
+ 0.3
V
V
OL
V
SS
−
0.3
V
OH
V
DD
+ 0.3
Power Dissipation
P
D
120
mW
Operating Temperature
T
OPR
-0.5 to +70
°
C
Storage Temperature
T
STG
-55 to +125
°
C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
ELECTRICAL CHARACTERISTICS
DC CHARACTERISTICS
(V
DD
−
V
SS
= 2.5V. F
OSC
= 3.58 MHz, T
A
= 25
°
C, all outputs unloaded.)
PARAMETER
SYM.
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Operating Voltage
V
DD
-
2.0
-
5.5
V
Operating Current
I
OP
Tone, Unloaded
-
0.5
0.7
mA
Pulse, Unloaded
-
0.4
0.5
Standby Current
I
SB
HKS
= 0, Unloaded
and no key entry
-
-
15
µ
A
Memory Retention Current
I
MR
HKS = 1
V
DD
= 1.0V
-
-
0.5
µ
A
Tone Output Voltage
V
TO
Row group
R
L
= 10 K
Ω
130
150
170
mVrm
s
Pre-emphasis
Col/Row
V
DD
= 2.0 to 5.5V
-
2
3
dB
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