Datasheet

Recommended Operating Conditions:
Parameter Symbol Min Typ Max Unit
Supply Voltage V
CC
4.75 5.0 5.25 V
High−Level Output Current I
OH
− − −800 A
Low−Level Output Current I
OL
− − 16 mA
Clock Frequency f
clock
0 − 25 MHz
Width of Clock Pulse t
w(clock)
20 −
−
ns
Setup Time, High Level or Low−Level Data t
su
15 − − ns
Hold Time, High Level or Low−Level Data t
h
0 − − ns
Time to Enable Clock 1 t
enable 1
15 − − ns
Time to Enable Clock 2 t
enable 2
15 − − ns
Time to Inhibit Clock 1 t
inhibit 1
5 − − ns
Time to Inhibit Clock 2 t
inhibit 2
5 − − ns
Operating Temperature Range T
A
0 − +70 C
Electrical Characteristics: (Note 2, Note 3)
Parameter Symbol Test Conditions Min Typ Max Unit
High−Level Input Voltage V
IH
2 − − V
Low−Level Input Voltage V
IL
− − 0.8 V
Input Clamp Voltage V
IK
V
CC
= MIN, I
I
= −12mA − − −1.5 V
High Level Output Voltage V
OH
V
CC
= MIN, V
IH
= 2V, V
IL
= 0.8V, I
OH
= -800A 2.4 3.4 − V
Low Level Output Voltage V
OL
V
CC
= MIN, V
IH
= 2V, V
IL
= 0.8V, I
OL
= 16mA − 0.2 0.4 V
Input Current I
I
V
CC
= MAX, V
I
= 5.5V − − 1 mA
High Level Input Current
Serial, A, B, C, D
I
IH
V
CC
= MAX, V
I
= 2.7V
− − 40 A
Clock 1 or 2 − − 40 A
Mode Control − − 80 A
Low Level Input Current
Serial, A, B, C, D
I
IL
V
CC
= MAX, V
I
= 0.4V
− − −1.6 mA
Clock 1 or 2 − − −1.6 mA
Mode Control − − −3.2 mA
Short−Circuit Output Current I
OS
V
CC
= MAX, Note 4 −18 − −57 mA
Supply Current I
CC
V
CC
= MAX, Note 5 − 39 63 mA
Note 2. .For conditions shown as MIN or MAX, use the appropriate value specified under “Recommended
Operation Conditions”.
Note 3. All typical values are at V
CC
= 5V, T
A
= +25C.
Note 4. Not more than one output should be shorted at a time.
Note 5. I
CC
is measured with all outputs and serial input open; A, B, C, and D inputs grounded; mode
control at 4.5V; and a momentary 3V, then ground, applied to both clock inputs.
Switching Characteristics
: (V
CC
= 5V, T
A
= +25C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Maximum Clock Frequency f
max
R
L
= 400, C
L
= 15pF 25 36 − MHz
Propagation Delay Time
t
PLH
− 18 27 ns
t
PHL
− 21 32 ns