Datasheet

74HC_HCT594_3 © NXP B.V. 2006. All rights reserved.
Product data sheet Rev. 03 — 20 December 2006 12 of 26
NXP Semiconductors
74HC594; 74HCT594
8-bit shift register with output register
11. Dynamic characteristics
Table 8. Dynamic characteristics type 74HC594
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF; see Figure 15.
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
t
pd
propagation
delay
SHCP to Q7S;
see
Figure 9
[1]
V
CC
= 2.0 V - 44 150 - 185 - 225 ns
V
CC
= 4.5 V - 16 30 - 37 - 45 ns
V
CC
= 5.0 V;
C
L
= 15 pF
-13- - - - -ns
V
CC
= 6.0 V - 14 26 - 31 - 38 ns
STCP to Qn; see
Figure 10
V
CC
= 2.0 V - 44 150 - 185 - 225 ns
V
CC
= 4.5 V - 16 30 - 37 - 45 ns
V
CC
= 5.0 V;
C
L
= 15 pF
-13- - - - -ns
V
CC
= 6.0 V - 14 26 - 31 - 38 ns
t
PHL
HIGH to
LOW
propagation
delay
SHR to Q7S; see
Figure 13
V
CC
= 2.0 V - 39 150 - 185 - 225 ns
V
CC
= 4.5 V - 14 30 - 37 - 45 ns
V
CC
= 5.0 V;
C
L
= 15 pF
-11- - - - -ns
V
CC
= 6.0 V - 12 26 - 31 - 38 ns
STR to Qn; see
Figure 14
V
CC
= 2.0 V - 39 125 - 155 - 185 ns
V
CC
= 4.5 V - 14 25 - 31 - 37 ns
V
CC
= 5.0 V;
C
L
= 15 pF
-11- - - - -ns
V
CC
= 6.0 V - 12 21 - 26 - 31 ns
t
THL
HIGH to
LOW output
transition
time
see
Figure 9
Serial data output Q7S
V
CC
= 2.0 V - 19 75 - 95 - 110 ns
V
CC
= 4.5 V - 7 15 - 19 - 22 ns
V
CC
= 6.0 V - 6 13 - 16 - 19 ns
Parallel data outputs
V
CC
= 2.0 V - 14 60 - 75 - 90 ns
V
CC
= 4.5 V - 5 12 - 15 - 18 ns
V
CC
= 6.0 V - 4 10 - 13 - 15 ns