HT2040A
In ter n a l
Con n ection
P a d No. P a d Na m e I/O
Descr ip t ion
Power supply (ground)
11
12
VSS
I
I
—
CMOS
Pull-Low
MODE defines the operating functions of DK1, SK2,
and K3~K6 (refer to the functional description).
MODE
CMOS
Pull-High
13
TEST
I
For IC test only
Lamp driving signals
14~16
L1~L3
O
CMOS
L1~L3 generate high SCR trigger signals to control the
lamp intensity.
Approximate internal connection circuit
Absolute Maximum Ratings
Supply Voltage .............................. –0.3V to 5.5V
Input Voltage..................VSS–0.3V to VDD+0.3V
Storage Temperature................. –50°C to 125°C
Operating Temperature............... –20°C to 75°C
Electrical Characteristics
(Ta=25°C)
Test Con d ition
Sym bol
P a r a m eter
Min . Typ . Ma x. Un it
VDD
—
Con d ition
—
VDD
IDD
IOL
IOH
VIH
VIL
Supply Voltage
4.5
—
5.0
300
4.0
5.5
600
—
V
µA
mA
µA
V
Operating Current
5V
5V
5V
—
No load
VOL=0.5V
VOH=4.5V
—
L1~L4 Output Sink Current
L1~L4 Output Source Current
“H” Input Voltage
2.0
–15
0.8VDD
—
–22
—
—
—
“L” Input Voltage
—
—
—
0.2VDD
—
V
AC 60Hz
AC 50Hz
—
122.9
102.4
FOSC
Internal System Frequency
—
KHz
—
—
3
26th Mar ’97
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
