EM91450A EMC [ELAN Microelectronics Corp], EM91450A Datasheet - Page 11

• Manufacturer Part Number: EM91450A
• Description: TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
• Manufacturer: EMC [ELAN Microelectronics Corp]

DC ELECTRICAL CHARACTERISTICS
(Ambient temperature is 25
ABSOLUTE MAXIMUM RATINGS
* This specification are subject to be changed without notice.
Operating voltage
Operating current(HKS=0)
Memory retention current
Standby current
HKS, HFI & DRING
pins: input voltage
Xmute pin : Schmitt triggers
(input pin)
HFO & HDO pins source current
PO, HFO, XMUTE, RMUTE
& SDO pins: sink current
PO, XMUTE, RMUTE and SDO
pins: leakage current
HFI pin input resistance
Keyboard scanning pins
output current (except COL4/KT)
COL4/KT source current
DTMF pin: sink current
DTMF signal DC level
DTMF signal: ac level
pre-emphase
distortion
load resistance
Power supply voltage
Input voltage range
Operating temperature
Storage temperature
Power consumption
Distortion(dB)=20 log
V
V
L
1
Parameter
, V
, V
2
H
Items
, V
=ROW group and column group signal.
sink current
3
.... V
n
= Harmonic signal (BW=300Hz~3500Hz)
o
C, V
{[V
DD
=2.5V unless otherwise noted, all voltages referenced to V
1
2
+V
2
Pulse
Tone
Pulse
Tone
HKS=1 Istby
HKS=0
HKS=1
HKS=0
2
+V
Sym.
T
T
V
V
P
3
OPR
STO
2
DD
IN
D
(Ambient temperature is 25
..... +V
IoH
Rhfi
IoH
IoH
Idd
Imrt
ViH
ViL
V
V
IoH
IoL
IoL
IoL
IoL
Vdc
Vdtmf
THD
ZL
Twist
Sym.
n
H-L
L-H
2
)1/2]/[(V
0.8V
0.9V
Min.
-0.2
-0.2
200
142
V
V
0.2
2.0
2.0
0.2
0.2
0.5
2
5
-
-
-
-
-
1
-
L
-
-
-
SS
SS
2
V
+V
DD
DD
SS
-0.3V ~ V
H
2
0.15
200
400
160
0.3
-30
)1/2]}
TONE/PULSE DIALER WITH LCD INTERFACE
10
10
Typ.
Rating
-55 ~ 125
1
-
-
-
-
-
-
-
-
-
-
-
-
-
2
-
-
-
-
6.0 Vdc
0 ~ 50
o
500
C, all voltages referenced to V
0.2V
0.1V
DD
0.01
0.75
V
V
800
180
5.5
-23
5.5
0.3
0.5
0.1
0.1
0.1
10
30
50
Max. Unit
-
3
-
-
-
-
-
-
+0.3V
DD
DD
DD
DD
AND I.P.P. DETECT FUNCTION
V
mA
uA
uA
V
V
V
mA
uA
K
uA
mA
mA
mVrms
dB
K
mA
µA
Vdd
dB
SS
, Fosc=3.579545 MHz)
Condition
unload
with pull up/down
resistor * 8
HKS=1,Vdd=1V
unload
with pull up/down
resistor * 8
at idle state
Vo = 2.0 V
Vo = Vdd
Vhfi = Vss
Vksn=Vss
ksn=Vdd
Vo=2.0V
Vo=0.5V
Vdtmf = 0.5 V
Row group
ZL = 5 K
THD
Vo = 0.5 V
Vdd = 2.0V ~ 5.5V
Column - Row
EM91450 SERIES
SS
)
mW
Unit
o
o
V
V
C
C
2.10.1999
23dB
11