Datasheet
SN54ALS564B, SN74ALS564B
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SDAS164B – APRIL 1982 – REVISED JANUARY 1995
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
logic diagram (positive logic)
OE
1D
2
1D
3
2D
4
3D
5
4D
6
5D
11
CLK
19
18
17
16
15
14
13
12
7
6D
8
7D
9
8D
EN
1
OE
CLK
1D
1Q
1
11
2
19
To Seven Other Channels
C1
1D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
C1
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN54ALS564B –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS564B 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
‡
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54ALS564B SN74ALS564B
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.7 0.8 V
I
OH
High-level output current –1 –2.6 mA
I
OL
Low-level output current 12 24 mA
f
clock
Clock frequency 0 22 0 30 MHz
t
w
Pulse duration, CLK high or low 25 14 ns
t
su
Setup time, data before CLK↑ 15 15 ns
t
h
Hold time, data after CLK↑ 4 0 ns
T
A
Operating free-air temperature –55 125 0 70 °C