Datasheet

1997 Nov 25 14
Philips Semiconductors Product specification
Phase-locked-loop with VCO 74HC/HCT4046A
VCO section
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF
DC CHARACTERISTICS FOR 74HCT
Quiescent supply current
Voltages are referenced to GND (ground = 0 V)
Note
1. The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given above.
To determine ∆I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HC
V
CC
(V)
OTHER
+25 −40 to +85 −40 to +125
min. typ. max. typ. max. min. max.
∆f/T frequency stability
with temperature
change
0.20 %/K 3.0
V
I
=V
VCOIN
= 1/2 V
CC
;
R1 = 100 kΩ;R2=∞;
C1 = 100 pF; see Fig.18
0.15 4.5
0.14 6.0
f
o
VCO centre
frequency (duty
factor = 50%)
7.0 10.0 MHz 3.0 V
VCOIN
= 1/2 V
CC
;
R1 = 3 kΩ;R2=∞;
C1 = 40 pF; see Fig.19
11.0 17.0 4.5
13.0 21.0 6.0
∆f
VCO
VCO frequency
linearity
1.0 % 3.0 R1 = 100 kΩ;R2=∞;
C1 = 100 pF;
see Figs 20 and 21
0.4 4.5
0.3 6.0
δ
VCO
duty factor at
VCO
OUT
50 % 3.0
50 4.5
50 6.0
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
OTHER
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
I
CC
quiescent supply
current
(VCO disabled)
8.0 80.0 160.0 µA 6.0 pins 3, 5 and 14
at V
CC
; pin 9 at
GND; I
I
at
pins 3 and 14 to
be excluded
∆I
CC
additional quiescent
supply current per
input pin for unit load
coefficient is 1 (note 1)
V
I
=V
CC
− 2.1 V
100 360 450 490 µA 4.5
to
5.5
pins 3 and 14
at V
CC
;
pin 9 at GND;
I
I
at pins 3 and 14
to be excluded
INPUT UNIT LOAD COEFFICIENT
INH 1.00