HD74LS166A Datasheet, PDF (4/8 Pages) Hitachi Semiconductor – 8-bit Shift Registers

HD74LS166A
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Clock frequency
Clock and clear pulse width
Mode control setup time
Data setup time
Hold time
Symbol
V_CC
I_OH
I_OL
T_opr
ƒ_clock
t_w
t_su
t_su
t_h
Min
4.75
—
—
–20
0
20
30
20
0
Typ
Max
Unit
5.00
5.25
V
—
–400
µA
—
8
mA
25
75
°C
—
25
MHz
—
—
ns
—
—
ns
—
—
ns
—
—
ns
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Symbol
min.
typ.* max.
Unit
Condition
Input voltage
Output voltage
Input current
Short-circuit output
current
V_IH
2.0
—
—
V
V_IL
—
—
0.8
V
V_OH
2.7
—
—
V
V_CC = 4.75 V, V_IH = 2 V, V_IL = 0.8 V,
I_OH = –400 µA
V_OL
—
—
0.4
V
I_OL = 4 mA V_CC = 4.75 V, V_IH = 2 V,
—
—
0.5
I_OL = 8 mA ^VIL ^{= 0.8 V}
I_IH
—
—
20
µA V_CC = 5.25 V, V_I = 2.7 V
I_IL
—
—
–0.4
mA V_CC = 5.25 V, V_I = 0.4 V
I_I
—
—
0.1
mA V_CC = 5.25 V, V_I = 7 V
I_OS
–20
—
–100
mA V_CC = 5.25 V
Supply current**
I_CC
—
20
32
mA V_CC = 5.25 V
Input clamp voltage
V_IK
—
—
–1.5
V
V_CC = 4.75 V, I_IN = –18 mA
Notes: * V_CC = 5 V, Ta = 25°C
** With the outputs open, 4.5 V applied to the serial input and all other inputs except the clock grounded, I_CC is
measured after a momentary ground, then 4.5 V, is applied to clock.
Switching Characteristics
(V_CC = 5 V, Ta = 25°C)
Item
Symbol Inputs min.
typ.
max.
Unit
Condition
Maximum clock frequency
ƒ_max
25
35
—
MHz
Propagation delay time
t_PHL
t_PHL
Clear
—
7
Clock
19
14
30
25
ns
ns
C_L = 15 pF, R_L = 2 kΩ
t_PLH
5
11
20
ns
Rev.4.00, May 10, 2006, page 4 of 7