參數(shù)資料
型號: TMS3637P
廠商: TEXAS INSTRUMENTS INC
元件分類: 搖控器
英文描述: INFRARED, TRANSMITTER/RECEIVER IC, PDIP8
封裝: PLASTIC, DIP-8
文件頁數(shù): 29/54頁
文件大?。?/td> 384K
代理商: TMS3637P
6–4
Table 6–2. Four-Wire Direct Connection
DEVICE
FUNCTION
U1
TMS3637 configured as a normal continuous logic transmitter
U2
TMS3637 configured as an analog normal (1-code) Q-state noninverting receiver
U3
Inverter (NOT gate) used as external clock
R1
Feedback resistor for U3
R2
Resistor on TIME that, in conjunction with C2, determines OUT pulse duration on U2.
R3
Resistor on OSCR that, in conjunction with C3, determines internal oscillator frequency of U2.
R4
Pullup resistor for transmitter OUT, which is an open-drain output
R5
Current-limiting resistor for D1
C1
Part of feedback circuit used to cause U3 to oscillate
C2
Capacitor on TIME that, in conjunction with R2, determines OUT pulse duration on U2.
C3
Capacitor on OSCC that, in conjunction with R3, determines internal oscillator frequency of U2.
D1
LED for indication of received code
OSCR
OSCC
TIME
GND
C1
22 nF
VCC
IN
CEX
OUT
U1 (transmitter)
R3
22 k
OSCR
OSCC
TIME
GND
C3
220 pF
VCC
IN
CEX
OUT
U2 (receiver)
R1
1.8 k
R2
1 M
C2
470 nF
GND
VCC
R5
220
D1
VCC
OUT
R4
100 k
Code
U3
74HC14
Clock
87
6
5
1
234
87
6
5
12
3
4
Figure 6–2. Four-Wire Direct Connection
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