74HC_HCT594_15 Datasheet, PDF (16/26 Pages) NXP Semiconductors – 8-bit shift register with output register

NXP Semiconductors
74HC594; 74HCT594
8-bit shift register with output register
Table 9. Dynamic characteristics type 74HCT594 …continued
GND = 0 V; V_CC = 4.5 V; t_r = t_f = 6 ns; C_L = 50 pF; see Figure 15.
Symbol Parameter Conditions
25 °C
Min Typ Max
t_W
pulse width SHCP (HIGH or
LOW); see
Figure 9
16
4
-
STCP (HIGH or
LOW); see
Figure 10
16
4
-
SHR and STR
(HIGH or LOW);
see Figure 13
and Figure 14
16
6
-
t_su
set-up time DS to SHCP;
see Figure 11
20
4
-
SHR to STCP;
see Figure 12
20
6
-
SHCP to STCP;
see Figure 10
20
7
-
t_h
hold time DS to SHCP;
see Figure 11
5
−3
-
t_rec
recovery
SHR to SHCP
time
and
STR to STCP;
see Figure 13
and Figure 14
10
−5
-
f_max
maximum SHCP or STCP;
frequency see Figure 9 and
Figure 10
30
92
-
V_CC = 5.0 V;
C_L = 15 pF
-
100
-
C_PD
power
V_I = GND to V_CC ^[2] -
89
-
dissipation − 1.5 V;
capacitance V_CC = 5 V;
f_i = 1 MHz
−40 °C to +85 °C
Min
Max
20
-
20
-
20
-
25
-
25
-
25
-
6
-
13
-
24
-
-
-
-
-
[1] t_pd is the same as t_PHL and t_PLH.
[2] C_PD is used to determine the dynamic power dissipation (P_D in µW):
P_D = C_PD × V_CC2 × f_i × N + ∑(C_L × V_CC2 × 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_CC2 × f_o) = sum of outputs.
−40 °C to +125 °C Unit
Min
Max
24
-
ns
24
-
ns
24
-
ns
30
-
ns
30
-
ns
30
-
ns
7
-
ns
15
-
ns
20
-
MHz
-
-
MHz
-
-
pF
74HC_HCT594_3
Product data sheet
Rev. 03 — 20 December 2006
© NXP B.V. 2006. All rights reserved.
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