74AHC_AHCT594_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 2 — 4 July 2013 12 of 24
NXP Semiconductors 74AHC594-Q100; 74AHCT594-Q100
8-bit shift register with output register
[1] Typical values are measured at nominal supply voltage (V
CC
= 3.3 V and V
CC
=5.0V).
[2] C
PD
is used to determine the dynamic power dissipation (P
D
in W).
P
D
=C
PD
V
CC
2
f
i
N+(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
(C
L
V
CC
2
f
o
) = sum of the outputs.
t
PHL
HIGH to LOW
propagation
delay
SHCP to Q7S; see Figure 9
C
L
= 15 pF - 4.1 6.7 1.8 7.6 1.8 8.3 ns
C
L
= 50 pF - 5.4 8.8 2.4 10.1 2.4 11.0 ns
STCP to Qn; see Figure 10
C
L
= 15 pF - 3.7 6.1 1.9 6.9 1.9 7.2 ns
C
L
= 50 pF - 5.2 8.5 2.6 9.7 2.6 10.5 ns
SHR
to Q7S; see Figure 13
C
L
= 15 pF - 4.3 7.0 2.4 8.0 2.4 8.7 ns
C
L
= 50 pF - 5.4 8.8 2.7 10.1 2.7 11.0 ns
STR
to Qn; see Figure 14
C
L
= 15 pF - 4.5 7.4 2.3 8.4 2.3 9.2 ns
C
L
= 50 pF - 5.7 9.4 3.1 10.7 3.1 11.7 ns
f
max
maximum
frequency
SHCP or STCP;
see Figure 9 and Figure 10
90 160 - 80 - 70 - MHz
t
W
pulse width SHCP and STCP HIGH or
LOW; see Figure 9 and
Figure 10
5.5 - - 6.0 - 6.5 - ns
SHR
and STR HIGH or LOW;
see Figure 13 and Figure 14
5.2 - - 5.5 - 6.0 - ns
t
su
set-up time DS to SHCP; see Figure 11 3.0 - - 3.0 - 3.5 - ns
SHR
to STCP; see Figure 12 5.0 - - 5.0 - 5.5 - ns
SHCP to STCP; see Figure 10
5.0 - - 5.0 - 5.5 - ns
t
h
hold time DS to SHCP; see Figure 11 2.0 - - 2.0 - 2.5 - ns
t
rec
recovery time SHR to SHCP; see Figure 13 2.9 - - 3.3 - 3.8 - ns
STR
to STCP; see Figure 14 3.4 - - 3.8 - 4.3 - ns
C
PD
power
dissipation
capacitance
f
i
= 1 MHz; V
I
= GND to V
CC
[2]
-55- - - - -pF
Table 7. Dynamic characteristics
…continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 15.
Symbol Parameter Conditions 25 C 40 C to +85 C 40 C to +125 C Unit
Min Typ
[1]
Max Min Max Min Max
