HT6222 查看數據表（PDF） - Holtek Semiconductor
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HT6222 Datasheet PDF : 15 Pages
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HT6221/HT6222
K 2 1 In p u t
K 21
K m In p u t
36m s
36m s
t>126m s
DOUT
K 2 1 c o d e tr a n s m is s io n
Note: Km can be one of K22~K24
Valid double-key input
Km
1 0 8 m s ( m in .)
K 21+K m code
tr a n s m is s io n
DOUT and LED
After the transmission codes are sent, the DOUT pin generates transmission codes with a carrier, and the LED goes
low to drive a transmission indicator.
Application Circuits
Application Circuit 1
V DD
1 .8 V ~ 3 .5 V
330W
100pF
100pF
455kH z
LE D
c e r a m ic r e s o n a to r
9
8
11
6
X1
X2
LE D
VDD
4 7 m F /1 6 V
1kW
5
DOUT
In fra re d
47W
8050
7
D7
H T6221
10
VSS
51kW ´8
C 1 C 2 C 3 C 4 C 5 C 6 C 7 C 8 R 1 R 2 R 3 R 4 A IN
19 18 17 16 15 14 13 12 1
2
3
4
20
K 1 K 5 K 9 K 13 K 17 K 21 K 25 K 29
K 2 K 6 K 10 K 14 K 18 K 22 K 26 K 30
K 3 K 7 K 11 K 15 K 19 K 23 K 27 K 31
K 4 K 8 K 12 K 16 K 20 K 24 K 28 K 32
1N 4148´8
Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.)
Rev. 1.50
9
October 1, 2007
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