Alinco DX-70, Service Manual

Page: 34 / 116

19) MC4001BF (XA0299)
Quad 2-Input NOR Gate
T r u t h T a b l e
Input
Output
A
B
X
I L H
H L
H L
H I
; = t > -
• ^ > -
: = t > -
: ; = £ > ■
ln 1A c z
1
14 = 3
V
dd
In 2A
e n
2
13
Z D
In 2D
Out A
nz
3
0 3
C
12
Z D
In 1D
Out 0
nz
4
O
o
11
Z D
Out D
In 1B
ÏZ Z
5
C O
10
Z D
Oui C
ln 2B
nz
6
T l
9
Z D
In 2C
Vss
nz
7
8
Z Z
1
In 1C
20) AN612 (XA0300)
Balanced Modulator Circuit
Parameter Symbol Condition Ratings Unit
Max. supply voltage Vcc 14.4
V
Supply current lee 15 mA
Power dissipation PD
220
mW
Total current Itot
V6«12.0V
9.5 mA
Zener voltage V5-4
6.15 V
Signal input terminal voltage VV-4 3.1 V
Carrier input terminal voltage V3-4
3.4
V
Output terminal voltage V7-4
8.6
V
Output voltage (BM AC)
Vo(BM)
V6=9.0V
-3
dBm
Carrier suppression SC
50
dB
T e s t C i r c u i t
- J