Datasheet

1997 Nov 25 17
Philips Semiconductors Product specification
Phase-locked-loop with VCO 74HC/HCT4046A
DC CHARACTERISTICS FOR 74HCT
Demodulator section
Voltages are referenced to GND (ground = 0 V)
AC CHARACTERISTICS FOR 74HCT
Phase comparator section
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF
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.
R
S
resistor range 50 300 kΩ 4.5 at R
S
> 300 kΩ
the leakage current can
influence V
DEMOUT
V
OFF
offset voltage
VCO
IN
to
V
DEMOUT
±20 mV 4.5 V
I
=V
VCOIN
= 1/2 V
CC
;
values taken over
R
S
range; see Fig.15
R
D
dynamic output
resistance at
DEM
OUT
25 Ω 4.5 V
DEMOUT
= 1/2 V
CC
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.
t
PHL
/
t
PLH
propagation delay
SIG
IN
, COMP
IN
to PC1
OUT
23 40 50 60 ns 4.5 Fig.16
t
PHL
/
t
PLH
propagation delay
SIG
IN
, COMP
IN
to PCP
OUT
35 68 85 102 ns 4.5 Fig.16
t
PHL
/
t
PLH
propagation delay
SIG
IN
, COMP
IN
to PC3
OUT
28 54 68 81 ns 4.5 Fig.16
t
PZH
/
t
PZL
3-state output enable
time SIG
IN
, COMP
IN
to PC2
OUT
30 56 70 84 ns 4.5 Fig.17