EM91465 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 °C, all voltages referenced to VSS)
Items
Sym.
Rating
Unit
Power supply voltage
Input voltage range
Operating temperature
Storage temperature
Power consumption
VDD
VIN
6.0 Vdc
VSS-0.3V ~ VDD+0.3V
0 ~ 50
V
V
TOPR
TSTO
PD
°C
°C
mW
-55 ~ 125
500
DC ELECTRICAL CHARACTERISTICS
(Ambient temperature is 25 °C, VDD=2.5V unless otherwise noted, all voltages referenced to VSS, Fosc=3.579545 MHz)
Parameter
Sym.
Min. Typ.
Max. Unit
Condition
Operating voltage
Pulse
Tone
Pulse
Tone
2.0
2.0
-
5.5
5.5
0.3
0.5
0.1
0.1
10
V
unload
-
0.15
0.3
-
-
1
Operating current(HKS=0)
Idd
-
-
-
-
-
mA
uA
uA
with pull up/down
resistor * 8
HKS=1,Vdd=1V
unload
Memory retention current
Standby current
Imrt
HKS=1 Istby
HKS=0
HKS=1
HKS=0
-
10
0.1
30
with pull up/down
resistor * 8
-
HKS, HFI & DRING
pins: input voltage
ViH
0.8VDD
VSS
-
VDD
V
ViL
VH-L
VL-H
IoH
IoL
-
-
-
-
-
0.2VDD
Xmute pin : Schmitt triggers
(input pin)
VSS
0.3VDD
V
at idle state
0.7VDD
0.2
VDD
V
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
sink current
-
-
mA
mA
Vo = 2.0 V
Vo = 0.5 V
-0.2
IoH
-
-
0.01
uA
Vo = Vdd
Rhfi
IoH
IoL
IoH
IoL
IoL
Vdc
-
200
10
-
50
800
-
KΩ
uA
Vhfi = Vss
Vksn=Vss
2
200 400
µA
mA
ksn=Vdd
0.2
0.2
-0.2
0.5
-
-
-
-
Vo=2.0V
-
Vo=0.5V
DTMF pin: sink current
DTMF signal DC level
DTMF signal: ac level
pre-emphase
-
mA
Vdtmf = 0.5 V
Vdd = 2.0V ~ 5.5V
0.75
180
3
Vdd
Vdtmf 142 160
mVrms Row group
Twist
THD
ZL
1
-
2
-30
-
dB
dB
KΩ
Column - Row
ZL = 5 KΩ
distortion
-23
-
load resistance
5
THD < − 23dB
2
2
Distortion(dB)=20 log
{[V12+V22+V32 ..... +Vn2)1/2]/[(VL +VH )1/2]}
VL, VH =ROW group and column group signal.
V1, V2, V3 .... Vn = Harmonic signal (BW=300Hz~3500Hz)
* This specification are subject to be changed without notice.
9.24.1998
11
ELAN [ ELAN MICROELECTRONICS CORP ]
