HD74HC589
8-bit Serial of Parallel-input/Serial-output Shift Register
(with 3-state outputs)
Description
The HD74HC589 is similar in function to the HD74HC597, which is not a 3-state device.
This device consists of an 8-bit storage latch which feeds parallel data to an 8-bit shift register. Data can
also be loaded serially (see Function Table). The shift register output, O
H
, is a three-state output, allowing
this device to be used in bus-oriented systems.
Features
•
•
•
•
•
High Speed Operation: t
pd
(Shift Clock to Q
H
) = 15 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 µA max
Low Quiescent Supply Current: I
CC
(static) = 4 µA max (Ta = 25°C)
Function Table
Latch Clock
LCK
Shift Clock
SCK
X
X
X
L, H,
X
X
L, H,
Serial Shift/
Parallel Load
X
L
L
X
H
Output Enable
OE
X
L
L
H
L
Function
Data are loaded into input latches
Data are loaded from input into shift
registers
Data are transfered from input
latches to shift registers
Outputs are disabled
Serial shift Q
n
= Q
n – 1
, Q
0
= SER
HD74HC589
Pin Arrangement
B 1
C 2
D 3
E 4
F 5
G 6
H 7
GND 8
(Top view)
16 V
CC
15 A
14 S
A
13
Serial Shift/
Parallel Load
12 Latch Clock
11 Shift Clock
10 Output Enable
9 Q
H
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage
Output voltage
Output current
DC current drain per V
CC
, GND
DC input diode current
DC output diode current
Power Dissipation per package
Storage temperature
Symbol
V
CC
V
IN
V
OUT
I
OUT
I
CC
, I
GND
I
IK
I
OK
P
T
Tstg
Rating
–0.5 to +7.0
–0.5 to V
CC
+ 0.5
–0.5 to V
CC
+ 0.5
±35
±75
±20
±20
500
–65 to +150
Unit
V
V
V
mA
mA
mA
mA
mW
°C
2
HD74HC589
Logic Diagram
SCK
S
A
Shift/
Load
SCK
A
LCK Q
D
LCK
Q
SCK
S
SCK
Q
D
SCK
R
B
LCK Q
D
LCK
Q
S
SCK
Q
D
SCK
R
C
D
E
F
G
H
LCK
LCK
V
CC
LCK
Q
H
OE
3
HD74HC589
DC Characteristics
Ta = 25°C
Item
Input voltage
Symbol
V
IH
Ta = –40 to
+85°C
Max
—
—
—
0.5
1.35
1.8
—
—
—
—
—
0.1
0.1
0.1
0.33
0.33
±5.0
±1.0
40
µA
µA
µA
I
OL
= 6 mA
I
OL
= 7.8 mA
Vin = V
IH
or V
IL
,
Vout = V
CC
or GND
Vin = V
CC
or GND
Vin = V
CC
or GND, Iout = 0
µA
V
I
OH
= –6 mA
I
OH
= –7.8 mA
Vin = V
IH
or V
IL
I
OL
= 20
µA
V
Vin = V
IH
or V
IL
I
OH
= –20
µA
V
Unit
V
Test Conditions
V
CC
(V) Min Typ Max Min
2.0
4.5
6.0
1.5 —
3.15 —
4.2 —
—
—
—
—
—
—
—
—
—
0.5
1.5
3.15
4.2
—
V
IL
2.0
4.5
6.0
1.35 —
1.8
—
1.9
4.4
5.9
4.13
5.63
—
—
—
Output voltage
V
OH
2.0
4.5
6.0
4.5
6.0
1.9 2.0 —
4.4 4.5 —
5.9 6.0 —
4.18 —
5.68 —
—
—
—
—
—
—
—
—
—
—
V
OL
2.0
4.5
6.0
4.5
6.0
0.0 0.1
0.0 0.1
0.0 0.1
—
—
—
—
—
0.26 —
0.26 —
±0.5
—
±0.1
—
4.0
—
Off-state output
current
Input current
Quiescent supply
current
I
OZ
Iin
I
CC
6.0
6.0
6.0
4
HD74HC589
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25°C
Item
Maximum clock
frequency
Symbol
f
max
Ta = –40 to
+85°C
Max
4
21
25
250
50
43
220
44
37
220
44
37
190
38
33
190
38
33
—
—
—
—
—
—
—
—
—
—
—
—
ns
Serial shift/parallel load to
shift clock
ns
S
A
to shift clock
ns
Data to latch clock
ns
ns
ns
ns
Serial shift/prallel load to Q
H
ns
Shift clock to Q
H
ns
Latch clock to Q
H
Unit
MHz
Test Conditions
V
CC
(V) Min Typ Max Min
2.0
4.5
6.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
80
16
14
—
—
—
—
20
—
—
15
—
—
16
—
—
9
—
—
14
—
—
8
—
5
27
32
—
—
—
Propagation delay t
PLH
time
t
PHL
2.0
4.5
6.0
200 —
40
34
—
—
t
PLH
t
PHL
2.0
4.5
6.0
175 —
35
30
—
—
t
PLH
t
PHL
2.0
4.5
6.0
175 —
35
30
—
—
Output enable
time
t
ZL
t
ZH
2.0
4.5
6.0
150 —
30
26
—
—
Output disable
time
t
LZ
t
HZ
2.0
4.5
6.0
150 —
30
26
—
—
—
—
—
—
—
—
—
—
—
—
—
—
100
20
17
125
25
21
125
25
21
125
25
21
Pulse width
t
w
2.0
4.5
6.0
Setup time
t
su
2.0
4.5
6.0
100 —
20
17
1
—
t
su
2.0
4.5
6.0
100 —
20
17
—
—
t
su
2.0
4.5
6.0
100 —
20
17
—
—
5
模拟电子
