HD74LS193 Datasheet, PDF (4/12 Pages) Hitachi Semiconductor – Synchronous Up/Down 4-bit Binary Counters(dual clock lines)

HD74LS193
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Clock frequency
Pulse width
Setup time (Clear)
Setup time
Hold time
Symbol
V_CC
I_OH
I_OL
T_opr
ƒ_clock
t_w
t_{su (CLR)}
t_su
t_h
Min
4.75
—
—
–20
0
20
40
20
3
Typ
5.00
—
—
25
—
—
—
—
—
Max
5.25
–400
8
75
25
—
—
—
—
Unit
V
µA
mA
°C
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
—
19
34
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
** I_CC is measured with all outputs open, clear and load inputs grounded, and all other inputs at 4.5 V.
Switching Characteristics
(V_CC = 5 V, Ta = 25°C)
Item
Symbol
Inputs
Outputs min. typ. max. Unit Condition
Maximum clock frequency
ƒ_max
25
32
—
MHz
t_PLH
Count-up
Carry
—
17
26
ns
t_PHL
—
18
24
Propagation delay time
t_PLH
Count-down Borrow
—
16
24
ns
t_PHL
—
15
24
C_L = 15 pF,
t_PLH
Either Count
Q
t_PHL
—
27
38
R_L = 2 kΩ
ns
—
30
47
t_PLH
Load
t_PHL
—
24
40
Q
ns
—
25
40
t_PHL
Clear
Q
—
23
35
ns
Rev.2.00, Feb.18.2005, page 4 of 11