HT16x2Tx/HT12x2Tx
2
16
/2
12
RF Encoder
Operation Flowchart
Power on
Standby mode
No
Transmission
enabled?
YES
4 data words
transmitted
1
2
No
Transmission
still enabled
YES
4 data words
transmitted
continuously
3
4
Application Circuit
2
U2 LDO
HT7136-1
1
BT1(12V)
BT2(3V)
BATTERY
BATTERY
S2
S1
S0
R3
3
C8
0.1uF
S6
S5
S4
S3
HT12E2TX_UHF TX
U1
1
SW-DIP
2
SW-DIP
3
SW-DIP
4
SW-DIP
5
SW-DIP
6
SW-DIP
7
SW-DIP
8
VDD
9
L1
A6
A5
A4
A3
A2
A1
A0
VDD
VSS
PAOUT
HT12E2T3
A7
D0
D1
D2
D3
B0
B1
XOUT
XIN
DOUT
20
SW-DIP
S7
S8
S9
S10
S11
S12
S13
X1
R1
19
SW-TACT
18
SW-TACT
17
SW-TACT
16
SW-TACT
B1
SW-TACT
14
SW-TACT
13
12
2
C1
D1
LED
1
C2
10
11
Trace ANT
150nH
C7
100pF
C5
C4
C6
C3
Note: 1. When using a 6~12V battery, an HT7136 LDO should be added
2. 315MHz RF uses a 9.84375MHz Crystal
433MHz RF uses a 13.56MHz Crystal
Title
Size
A4
Date:
File:
1
2
3
433MTX(SZ01SZ1M11)
Number
4-Nov-2010
Sheet of
D:\layout\HT9831_lay\HT1XET3\HT1XET3.Ddb By:
Drawn
4
Revision
Rev. 1.00
7
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HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
