AN5870K
11
SDB00035BEB
Pin No. Equivalent circuit Description Pin voltage (V)
20 H. sync. signal detection pin: When detecting high-level
• Pin 20 gives priority to high-level signal
signal output (typ.)
H. sync. signal present: 2.5 V
H. sync. signal output
H. sync. not present:
Sync. separation circuit output
21 Sync. separation circuit input pin: Sync. signal
• Sync. slice level is determined by (typ.)
the external resistor R. Referring to 0.3 V[p-p]
the following equation, adjust slice
DC 1.35 V
level according to equipment set;
Slice level
= R ·
5.6 (µA)
Input frequency · Sync. width
• Open when the pin is unused.
22 Input changeover signal input pin: (typ.)
• When input is high: Input pin
2
High-level: 5 V
is selected (pins 3, 7, 11, 14, 16) Low-level: 0 V
When input is low: Input pin 1 threshold voltage:
is selected (pins 1, 5, 9, 13, 15) 1.7 V
23 B signal output pin: (typ.)
• Be sure to connect a capacitor to DC 6.2 V
output pin. If the pin is not used
with a 75 Ω terminating resistor,
do not allow a 20 mA or more
output current flow.
■ Terminal Equivalent Circuits (continued)
20
100 µA
100 µΑ
2.5 V
5 V (pin 12)
0.1 µA
20 µA
50 µA
200 Ω
200 Ω
30 kΩ
1 kΩ
5 V (pin 12)
21
R
0.15 µF
50 Ω
200 Ω
3.4 kΩ
5.6 µA
2.0 V
5 V (pin 12)
6 kΩ
50 kΩ
500 Ω
22
25 µA
150 µA
2.25 V
12 V (pin 28)
80 Ω
80 Ω
75 Ω
220 µF
0.01 µF
75 Ω
1%
7.8 mA
Pins 23,27,29
