Datasheet

December 1990 10
Philips Semiconductors Product specification
14-stage binary ripple counter with oscillator 74HC/HCT4060
Notes
1. The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given here.
To determine ∆I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
2. Only input MR (pin 12) has TTL input switching levels for the HCT versions.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF
INPUT UNIT LOAD COEFFICIENT
MR 0.40
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
RS to Q
3
33 66 83 99 ns 4.5 Fig.12
t
PHL
/ t
PLH
propagation delay
Q
n
to Q
n+1
8 16 20 24 ns 4.5 Fig.14
t
PHL
propagation delay
MR to Q
n
21 44 55 66 ns 4.5 Fig.13
t
THL
/ t
TLH
output transition time 7 15 19 22 ns 4.5 Fig.12
t
W
clock pulse width
RS; HIGH or LOW
16 6 20 24 ns 4.5 Fig.12
t
W
master reset pulse
width MR; HIGH
16 6 20 24 ns 4.5 Fig.13
t
rem
removal time
MR to RS
26 13 33 39 ns 4.5 Fig.13
f
max
maximum clock pulse
frequency
30 80 24 20 MHz 4.5 Fig.12