Switching characteristics – Renesas HD74HCT1G04 User Manual
Page 5
HD74HCT1G04
Rev.5.00, Jan.28.2004, page 5 of 7
Switching Characteristics
Ta = 25°C
Item
Symbol Min
Typ
Max
Unit
Test Conditions
Output rise / fall time
t
TLH
t
THL
—
6
10
ns
Test circuit
t
PLH
—
7.5
12
Propagation delay time
t
PHL
—
10
17
ns
Test circuit
(C
L
= 15 pF, t
r
= t
f
= 6 ns, V
CC
= 5 V)
Ta = 25°C
Ta = –40 to 85°C
Item
Symbol
V
CC
(V)
Min
Typ
Max
Min
Max
Unit Test Conditions
Output rise / fall time
t
TLH
t
THL
4.5
—
14
25
—
31
ns
Test circuit
t
PLH
4.5
—
11.2
16
—
20
Propagation delay time
t
PHL
4.5
—
16.4
27
—
31
ns
Test circuit
Input capacitance
C
IN
—
—
2.5
5
—
5
pF
Equivalent capacitance
C
PD
—
—
10
—
—
—
pF
(C
L
= 50 pF, t
r
= t
f
= 6 ns)
Note:
C
PD
is equivalent capacitance inside of the IC calculated from the operating current without load (see
test circuit). The average operating current without load is calculated according to the expression
below.
I
CC
(opr) = C
PD
•
V
CC
•
f
IN
+ I
CC