MC14046B
PIN ASSIGNMENT
BLOCK DIAGRAM
LD
PC1
1
2
3
4
5
6
7
8
16
V
DD
SELF BIAS
CIRCUIT
PHASE
PCA 14
in
2ꢀꢀPC1
out
out
COMPARATOR 1
15 ZENER
out
PHASE
13ꢀPC2
1ꢀꢀLD
PCB
14 PCA
in
in
PCB
VCO
3
9
COMPARATOR 2
in
in
VCO
13 PC2
12 R2
11 R1
4ꢀꢀVCO
11ꢀR1
12ꢀR2
out
out
out
VOLTAGE
CONTROLLED
OSCILLATOR
(VCO)
INH
V
= PIN 16
6ꢀꢀC1
7ꢀꢀC1
DD
A
B
C1
A
V
= PIN 8
SS
C1
10 SF
out
B
SOURCE FOLLOWER
10ꢀSF
out
INH
5
V
9
VCO
in
SS
V
15ꢀZENER
SS
ELECTRICAL CHARACTERISTICS (Voltages Referenced to V
)
SS
− 55_C
25_C
125_C
V
Vdc
DD
Min
Max
Min
Typ
Max
Min
Max
Characteristic
Output Voltage
Symbol
Unit
“0” Level
V
5.0
10
15
−
−
−
0.05
0.05
0.05
−
−
−
0
0
0
0.05
0.05
0.05
−
−
−
0.05
0.05
0.05
Vdc
OL
V
in
= V or 0
DD
V
5.0
10
15
4.95
9.95
14.95
−
−
−
4.95
9.95
14.95
5.0
10
15
−
−
−
4.95
9.95
14.95
−
−
−
Vdc
Vdc
“1” Level
“0” Level
OH
V
in
= 0 or V
DD
Input Voltage (Note 2)
(V = 4.5 or 0.5 Vdc)
V
IL
5.0
10
15
−
−
−
1.5
3.0
4.0
−
−
−
2.25
4.50
6.75
1.5
3.0
4.0
−
−
−
1.5
3.0
4.0
O
(V = 9.0 or 1.0 Vdc)
O
(V = 13.5 or 1.5 Vdc)
O
V
5.0
10
15
3.5
7.0
11
−
−
−
3.5
7.0
11
2.75
5.50
8.25
−
−
−
3.5
7.0
11
−
−
−
Vdc
(V = 0.5 or 4.5 Vdc)
“1” Level
Source
Sink
IH
O
(V = 1.0 or 9.0 Vdc)
O
(V = 1.5 or 13.5 Vdc)
O
Output Drive Current
I
mAdc
OH
(V
(V
(V
(V
= 2.5 Vdc)
= 4.6 Vdc)
= 9.5 Vdc)
= 13.5 Vdc)
5.0
5.0
10
– 1.2
– 0.25
– 0.62
– 1.8
−
−
−
−
– 1.0
– 0.2
– 0.5
– 1.5
– 1.7
– 0.36
– 0.9
– 3.5
−
−
−
−
– 0.7
– 0.14
– 0.35
– 1.1
−
−
−
−
OH
OH
OH
OH
15
I
5.0
10
15
0.64
1.6
4.2
−
−
−
0.51
1.3
3.4
0.88
2.25
8.8
−
−
−
0.36
0.9
2.4
−
−
−
mAdc
(V = 0.4 Vdc)
OL
OL
(V = 0.5 Vdc)
OL
(V = 1.5 Vdc)
OL
Input Current
I
15
−
−
−
0.1
−
−
−
0.00001
5.0
0.1
7.5
−
−
1.0
−
mAdc
pF
in
Input Capacitance
Quiescent Current
(Per Package) Inh = PCAin = V
C
in
I
5.0
10
15
−
−
−
5.0
10
20
−
−
−
0.005
0.010
0.015
5.0
10
20
−
−
−
150
300
600
mAdc
DD
,
DD
Zener = VCO = 0 V, PCB = V
DD
in
in
or 0 V, I = 0 mA
out
Total Supply Current (Note 3)
(Inh = “0”, f = 10 kHz, C = 50 pF,
I
5.0
10
15
I
I
I
= (1.46 mA/kHz) f + I
= (2.91 mA/kHz) f + I
= (4.37 mA/kHz) f + I
mAdc
T
T
T
T
DD
DD
DD
o
L
R1 = 1.0 MW, R2 = R R = ∞,
SF
and 50% Duty Cycle)
2. Noise immunity specified for worst−case input combination.
Noise Margin for both “1” and “0” level =
1.0 Vdc min @ V = 5.0 Vdc
DD
2.0 Vdc min @ V = 10 Vdc
DD
2.5 Vdc min @ V = 15 Vdc
DD
3. To Calculate Total Current in General:
3/4
3/4
VCO – 1.65
V
VCO
in
−3
ǒ
− 1.35Ǔ
ǒ
– 1.65Ǔ
R
SF
in
DD
I
[ 2.2 x V
+
+ 1.6 x
+ 1 x 10 (C + 9) V f +
L DD
T
DD
R1
R2
100% Duty Cycle of PCA
100
in
−1
2
ǒ
Ǔ+ I
1 x 10
V
where: I in mA, C in pF, VCO , V in Vdc, f in kHz, and
T L in DD
DD
Q
R1, R2, R in MW, C on VCO .
out
SF
L
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