74AHC_AHCT594_2 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 02 — 9 June 2008 10 of 22
NXP Semiconductors
74AHC594; 74AHCT594
8-bit shift register with output register
t
W
pulse width SHCP and STCP HIGH or
LOW; see
Figure 9 and 10
V
CC
= 3.0 V to 3.6 V 6.0 - - 6.5 - 7.0 - ns
V
CC
= 4.5 V to 5.5 V 5.5 - - 6.0 - 6.5 - ns
SHR and STR HIGH or LOW;
see
Figure 13 and 14
V
CC
= 3.0 V to 3.6 V 5.0 - - 5.0 - 5.5 - ns
V
CC
= 4.5 V to 5.5 V 5.0 - - 5.2 - 5.7 - ns
t
su
set-up time DS to SHCP; see Figure 11
V
CC
= 3.0 V to 3.6 V 3.5 - - 3.5 - 4.0 - ns
V
CC
= 4.5 V to 5.5 V 3.0 - - 3.0 - 3.5 - ns
SHR to STCP; see Figure 12
V
CC
= 3.0 V to 3.6 V 8.0 - - 9.0 - 9.5 - ns
V
CC
= 4.5 V to 5.5 V 5.0 - - 5.0 - 5.5 - ns
SHCP to STCP; see
Figure 10
V
CC
= 3.0 V to 3.6 V 8.0 - - 8.5 - 9.0 - ns
V
CC
= 4.5 V to 5.5 V 5.0 - - 5.0 - 5.5 - ns
t
h
hold time DS to SHCP; see Figure 11
V
CC
= 3.0 V to 3.6 V 1.5 - - 1.5 - 2.0 - ns
V
CC
= 4.5 V to 5.5 V 2.0 - - 2.0 - 2.5 - ns
t
rec
recovery time SHR to SHCP; see Figure 13
V
CC
= 3.0 V to 3.6 V 4.2 - - 4.8 - 5.3 - ns
V
CC
= 4.5 V to 5.5 V 2.9 - - 3.3 - 3.8 - ns
STR to STCP; see Figure 14
V
CC
= 3.0 V to 3.6 V 4.6 - - 5.3 - 5.8 - ns
V
CC
= 4.5 V to 5.5 V 3.2 - - 3.7 - 4.3 - ns
C
PD
power
dissipation
capacitance
f
i
= 1 MHz; V
I
= GND to V
CC
[2]
-55- - - - -pF
74AHCT594; V
CC
= 4.5 V to 5.5 V
t
PLH
LOW to HIGH
propagation
delay
SHCP to Q7S; see Figure 9
C
L
= 15 pF - 3.8 6.3 1.7 7.2 1.7 7.8 ns
C
L
= 50 pF - 4.8 8.0 2.2 9.1 2.2 9.9 ns
STCP to Qn; see
Figure 10
C
L
= 15 pF - 3.5 5.7 1.8 6.5 1.8 7.1 ns
C
L
= 50 pF - 4.6 7.7 2.6 8.8 2.6 9.6 ns
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