HD74UH00
Switching Characteristics
(C
L
= 15 pF, t
r
= t
f
= 6 ns, V
CC
= 5 V)
Ta = 25°C
Item
Output rise/fall time
Symbol
t
TLH
t
THL
t
PLH
t
PHL
Min
—
Typ
5
Max
10
Unit
ns
Test Conditions
See Test circuit
Propagation delay time
—
7
15
ns
See Test circuit
(C
L
= 50 pF, t
r
= t
f
= 6 ns)
V
CC
Ta = 25°C
Item
Output rise/fall time
Symbol (V)
t
TLH
t
THL
Min
Typ
50
14
12
48
12
9
5
10
Ta = –40 to 85°C
Max Min
125
25
21
100
20
17
10
—
—
—
—
—
—
—
—
—
Max
155
31
26
125
25
21
10
—
pF
ns
See under figure
Unit
ns
Test Conditions
See under figure
2.0 —
4.5 —
6.0 —
Propagation delay time
t
PLH
t
PHL
2.0 —
4.5 —
6.0 —
Input capacitance
C
IN
—
—
—
—
Equivalent capacitance C
PD
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
Rev.4.00, Jan.30.2004, page 4 of 6
RENESAS [ RENESAS TECHNOLOGY CORP ]
