Holtek Semiconductor Inc HT6240-002 Datasheet
Infrared Remote Encoder
Features
Operating voltage: 2.2V~3.6V
·
Low power consumption
·
Few external parts
·
Applications
Television and video cassette recorder
·
controllers
Garage door controllers
·
General Description
HT6240-002 is designed as infrared remote
encoders, usually applied to TV systems. The
4´8 key matrix input and the extension bit in
Block Diagram
HT6240-002
20-pin DIP/SOP package
·
24-pin SOP package
Car door controllers
·
Security systems
·
Other remote control systems
·
put can transmit a max. of 256 instructions.
HT6240-002 have three different packages:
20-pin DIP, 20-pin SOP and 24-pin SOP.
-
PRB
OSCI
OSCO
TEST
IE 0
IE 1
IE 2
IE 3
DATA
OSC
TEST
MODE
IE -K E Y
Encoder
8-B it S hift
R egister
2
3´2
D u ty 1 /3
C ontrol
Unit
C ustom C ode
& D A TA C ode
Latch
8
10´2
D ivider
P a ra lle l to
C onverter
1 December 16, 1999
Serial
Key Scan
Driver
D ecoder
O utput
Stage
VDD VSS
OF0
OF7
CT
Pin Assignment
1
VSS
TEST
PRB
OSCI
OSCO
DATA
IE 0
IE 1
IE 2
IE 3
2
3
4
5
6
7
8
9
10
H T6240-002
20 DIP/SO P
20
19
18
17
16
15
14
13
12
11
VDD
CT
OF0
OF1
OF2
OF3
OF4
OF5
OF6
OF7
VSS
TEST
PRB
OSCI
OSCO
DATA
IE 0
IE 1
IE 2
IE 3
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
H T6240-002
2 4 S O P
HT6240-002
VDD
CT
OF0
OF1
OF2
OF3
OF4
OF5
OF6
OF7
NC
NC
Pad Assignment
* The IC substrate should be connected to VDD in the PCB layout artwork.
PRB
OSCI
OSCO
DATE
IE 0
IE 1
TES T
VSS
19
20
1
2
3
4
5
6
7178
IE 2
Chip size: 92 ´ 118 mil
18
VDD
(0 ,0 )
9
IE 3
OF7
10
OF6
2
CT
16
15
14
13
12
11
OF0
OF1
OF2
OF3
OF4
OF5
2 December 16, 1999
Pad Coordinates Unit: mil
Pad No. X Y Pad No. X Y
1
2
3
4
5
6
7
8
9 9.22
10 24.40
-40.88
-40.88
-40.88 -11.56
-40.88 -24.78
-40.88 -34.04
-40.88 -41.18
-13.77 -52.78
-7.14 -52.78
16.11 11 40.12
9.48 12 40.12
13 40.12
14 40.12
15 40.12
16 40.12 7.78
17 34.47 53.59
-53.55
-53.55
18
19
20
-8.97
-15.60
-22.23
-48.32
-39.74
-24.57
-15.98
-0.81
53.59
53.59
52.02
Pad Description
HT6240-002
Pad No. Pad Name I/O
1 PRB I
2 OSCI I CMOS Oscillator input
3 OSCO O CMOS Oscillator output
4 DATA I/O
5~8 IE0~IE3 I
9~16 OF7~OF0 O NMOS Drive for key scan
17 CT O CMOS Generates output transmission code
18 VDD
19 VSS
20 TEST I CMOS
¾¾
¾¾
Internal
Connection
CMOS
Pull-high
CMOS, NMOS
Pull-high
CMOS
Pull-high
Description
Power on reset
Detect custom code and extended code
Detect input from key matrix
Positive power supply
Negative power supply
TEST=Low normal mode
TEST=High test mode
3 December 16, 1999
Approximate internal connection circuits
In p u t te rm in a l
P in : T E S T , O S C I P in : P R B , IE 0 ~ IE 3
V
DD
O u tp u t te rm in a l
P in : O S C O , C T Pin: OF0~OF7
V
DD
HT6240-002
V
V
DD
DD
Bidirectional term inal
P in : D A T A
V
DD
Absolute Maximum Ratings
Supply Voltage ..............................-0.3V to 5.2V
Output Voltage..................................V
SS
to V
DD
Operating Temperature...............-20°Cto70°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi
mum Ratings² may cause substantial damage to the device. Functional operation of this de
vice at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.
Input Voltage ......................V
-0.3 to VDD+0.3
SS
Storage Temperature.................-40°Cto125°C
4 December 16, 1999
-
-
HT6240-002
Recommended Operating Condition
Symbol Parameter
V
DD
Supply Voltage
High-level Input Voltage
V
IH
IE0~IE3, DATA
High-level Voltage PRB
Low-level Input Voltage
V
IL
IE0~IE3, DATA
Low-level Input Voltage PRB
f
OSC
Clock Oscillating Frequency 3V
Electric Characteristics
Symbol Parameter
V
DD
I
DD
I
DD
I
OH
I
OL
R
I
Supply Voltage
Supply Current (during operation) 3V
Supply Current
(while not in operation)
High-level Output Current CT 3V
Low-level Output Current CT 3V
Low-level Output Current DATA 3V
Low-level Output Current
OF0~OF7
Pull-up Resistance PRB 3V
Pull-up Resistance DATA 3V
Pull-up Resistance E0~E3 3V
Ta= -20°C~70°C, unless otherwise noted
Test Conditions
Min. Typ. Max. Unit
V
Conditions
DD
¾¾
3V
3V
3V
3V
¾
¾
¾
¾
¾¾
2.2
¾
3.6 V
2.4V 3V 3V
2.1V 3V 3V
0 0 1.2V
0 0 0.9V
455
¾
Ta=25°C, VDD=3V, VSS=0V, unless otherwise noted
Test Conditions Limits
V
Conditions Min. Typ. Max.
DD
f
=455kHz,
OSC
¾
Ta=-20°C~70°C
f
OSC
3V
V
OH
V
OL
V
OL
V
3V
OL
=455kHz
¾¾¾1mA
=2V
=0.9V
=0.9V
=0.9V
2.2
¾
-5 -10 ¾
0.3 0.8
14
14
3.6 V
¾
0.1 0.3 mA
¾
¾
¾
¾¾80¾
¾¾70¾
¾¾70¾
V
V
kHz
Unit
mA
mA
kW
5 December 16, 1999
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