Diodes 74AHC594 - Manual (Page 6)

74AHC594
Document number: DS35484 Rev. 3 - 2
6 of 11
www.diodes.com
June 2013
© Diodes Incorporated
74AHC594
Switching Characteristics
(cont.)
Symbol /
Parameter
Pins Test Conditions V
CC
T A = +25°C -40°C°C to +85°C -40°C°C to +125°C
Unit
Min Typ Max Min Max Min Max
t
PHLH
HIGH to LOW
Propagation
Delay
SHCP toQ7S
Figure 1 C
L
= 15pF
3.0V to 3.6V  5.5 8.9 2.3 10.2 2.3 11.0
ns
4.5V to 5.5V  4.1 6.7 1.9 7.6 1.9 8.2
Figure 1 C
L
= 50pF
3.0V to 3.6V  7.4 12.1 3.0 13.9 3.0 15.1
4.5V to 5.5V  5.4 8.8 2.5 10.1 2.5 11.0
STCP to Qn
Figure 1 C
L
= 15pF
3.0V to 3.6V  5.5 9.1 2.4 10.4 2.4 11.3
ns
4.5V to 5.5V  3.7 6.0 1.9 6.9 1.9 7.5
Figure 1 C
L
= 50pF
3.0V to 3.6V  7.3 12.0 3.2 13.8 3.2 15.0
4.5V to 5.5V  5.2 8.5 2.6 9.7 2.6 10.5
SHR to
Q7S
Figure 1 C
L
= 15pF
3.0V to 3.6V  5.7 9.5 2.3 10.8 2.3 11.7
ns
4.5V to 5.5V  4.1 6.7 2.0 7.6 2.0 8.2
Figure 1 C
L
= 50pF
3.0V to 3.6V  7.5 12.2 3.6 14.0 3.6 15.2
4.5V to 5.5V  5.4 8.8 2.8 10.1 2.8 11.0
STR
to Qn
Figure 1 C
L
= 15pF
3.0V to 3.6V  4.1 7.2 2.2 8.2 2.2 8.9
ns
4.5V to 5.5V  4.1 7.2 2.2 8.2 2.2 8.9
Figure 1 C
L
= 50pF
3.0V to 3.6V  5.4 9.4 3.0 10.7 3.0 11.6
4.5V to 5.5V  5.4 9.4 3.0 10.7 3.0 11.6
t
PHL
Propagation
Delay
SHR to Q7S
Figure 1
2.0V  39 150  185  225
ns
4.5V  14 30  37  45
5.0V  11     
6.0V  12 26  31  38
STR to Qn
Figure 1
2.0V  39 125  155  185
ns
4.5V  14 25  31  37
5.0V  11     
6.0V  12 21  26  31
t
THL
Transition
Time
Serial data
output Q7S
Figure 1
2.0V  19 75  95  110
ns 4.5V  7 15  19  22
6.0V  6 13  16  19
Parallel Data
Outputs Q
N
Figure 1
2.0V  14 60  75  90
ns 4.5V  5 12  15  18
6.0V  4 10  13  15
Operating Characteristics (@T
A
= +25°C, unless otherwise specified.)
Parameter
Test
Conditions
V
CC
= 5V
Unit
Typ
C
pd
Power dissipation
capacitance
f = 1 MHz all outputs switching-no load 51 pF