Absolute Maximum Ratings*
Supply Voltage.................................–0.3V to 6V
Input Voltage.................... V
SS
–0.3 to V
DD
+
0.3V
Storage Temperature.................–50
°
C to 125
°
C
Operating Temperature...............–20
°
C to 75
°
C
*Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-
mum Ratings” may cause substantial damage to the device. Functional operation of this
device at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.
Electrical Characteristics
Ta=25
°
C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
DD
—
Conditions
V
DD
Operating Voltage
—
2
—
5.5
V
I
DD
Operating Current
2.5V
S/P=V
DD
,D0~D3=V
SS
,
CE =V
SS
, No load
—
240
2500
μ
A
5.0V
—
950
3000
V
IL
V
IH
“Low” Input Voltage
—
—
VSS
—
0.2V
DD
V
DD
1
V
“High” Input Voltage
—
—
0.8V
DD
—
—
V
I
STB
Standby Current
2.5V
S/P=V
DD
,CE =V
DD
,
No load
—
μ
A
5.0V
—
—
2
R
P
Pull-high Resistance
2.5V
V
OL
=0V
120
180
270
k
5.0V
45
68
100
t
DE
DTMF Output Delay
Time (Parallel Mode)
5V
—
—
t
UP
+6
t
UP
+8
ms
V
TDC
DTMF Output DC
Level
2V~
5.5V
DTMF Output
0.45V
DD
—
0.75V
DD
V
I
TOL
DTMF Sink Current
2.5V
V
DTMF
=0.5V
–0.1
—
—
mA
V
TAC
DTMF Output AC
Level
2.5V
Row group, R
L
=5k
0.12
0.15
0.18
Vrms
A
CR
R
L
Column Pre-emphasis
2.5V
Row group=0dB
t
HD
≤
–23dB
1
2
3
dB
k
DTMF Output Load
2.5V
5
—
—
t
HD
Tone Signal
Distortion
2.5V
R
L
=5k
—
–30
–23
dB
f
CLK
Clock Input Rate
(Serial Mode)
—
—
—
100
500
kHz
t
UP
Oscillator Starting
T he time from CE
falling edge to normal
oscillator operation
—
—
10
ms
f
OSC
System Frequency
—
Crystal=3.5795MHz
3.5759
3.5795
3.5831
MHz
HT9200A/B
4
21st Aug ’98