Changhong Electric 34T18, Руководство по обслуживанию, Страница: 37 / 61

SERVICE MANUAL
35
Fig. 19 Schematic Diagram (One Switch)
(3) Function Table
Table 9
Notes
H=HIGH state (the more positive voltage)
L=LOW state (the less positive voltage)
X=state is immaterial
Ratings
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage (with reference to V
DD
) V
EE
-18 to +0,5 V
Note
To avoid drawing V
DD
current out of terminal Z, when switch current flows into terminals Y, the
voltage drop across the bidirectional switch must not exceed 0,4V. If the switch current flows into
terminal Z, no V
DD
current will flow out of terminals Y, in this case is no limit for the voltage drop
across the switch, but the voltages at Y and Z may not exceed V
DD
or V
EE
(4) Refer to Table 17 about Functions and Data of the IC’s Pins.
Inputs Channel
E A
1
A
0
On
L L L Y
OA
-Z
A
; Y
OB
-Z
B
L L H Y
1A
-Z
A
; Y
1B
-Z
B
L H L Y
2A
-Z
A
; Y
2B
-Z
B
L H H Y
3A
-Z
A
; Y
3B
-Z
B
H X X none