HD74HCT564 Datasheet, PDF (5/9 Pages) Hitachi Semiconductor – Octal D-type Flip-Flops (with 3-state outputs)

HD74HCT564, HD74HCT574
Switching Characteristics
Item
Symbol V_CC (V)
Maximum clock
frequency
f_max
4.5
Propagation delay time t_PLH
4.5
t_PHL
4.5
Output enable time
t_ZL
4.5
t_ZH
4.5
Output disable time
t_LZ
4.5
t_HZ
4.5
Setup time
t_su
4.5
Hold time
t_h
4.5
Pulse width
t_w
4.5
Output rise/fall time
t_TLH
4.5
t_THL
4.5
Input capacitance
Cin
—
Ta = 25°C
Min Typ Max
— — 30
Ta = –40 to +85°C
Min
Max
—
24
(C_L = 50 pF, Input t_r = t_f = 6 ns)
Unit
Test Conditions
ns
— 14 31
—
— 15 31
—
— 16 30
—
— 16 30
—
— 15 30
—
— 18 30
—
20 3 —
25
5 –2 —
5
16 7 —
20
—
4
12
—
—
4
12
—
—
5
10
—
39
ns
39
38
ns
38
38
ns
38
—
ns
—
ns
—
ns
15
ns
15
10
pF
Test Circuit
V_CC
Input
Pulse Generator
Zout = 50 Ω
Input
Pulse Generator
Zout = 50 Ω
V_CC
Output
OC 1Q to 8Q
or
1Q to 8Q
1D to 8D
Clock
1 kΩ _S1
C_L =
50 pF
OPEN
GND
V_CC
TEST
t_PLH / t _PHL
t_ZH/ t _HZ
t_ZL / t _LZ
S1
OPEN
GND
V_CC
Note : 1. C_L includes probe and jig capacitance.
Rev.2.00 Mar 30, 2006 page 5 of 8