HD74LS93 Datasheet, PDF (4/9 Pages) Hitachi Semiconductor – 4-bit Binary Counters

HD74LS93
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Symbol
min.
typ.* max.
Unit
Condition
Input voltage
V_IH
2.0
—
—
V
V_IL
—
—
0.8
V
Output voltage
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
—
0.5
V
I_OL = 4 mA**
I_OL = 8 mA**
V_CC = 4.75 V, V_IH = 2 V,
V_IL = 0.8 V
Any reset
—
—
–0.4
A input
B input
I_IL
—
—
–2.4
mA V_CC = 5.25 V, V_I = 0.4 V
—
—
–1.6
Any reset
Input
current ^{A input}
I_IH
B input
—
—
20
—
—
40
µA V_CC = 5.25 V, V_I = 2.7 V
—
—
40
Any reset
—
—
0.1
V_I = 7 V
A input
I_I
—
—
0.2
mA V_I = 5.5 V
V_CC = 5.25 V
B input
—
—
0.2
V_I = 5.5 V
Short-circuit output
current
I_OS
–20
—
–100
mA V_CC = 5.25 V
Supply current
I_CC***
—
9
15
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
** Q_A output is tested at specified I_OL plus the limit value of IIL for the B input. This permits driving the B input
while maintaining full fan-out capability.
*** I_CC is measured with all outputs open, both R₀ inputs grounded following momentary connection to 4.5 V, and
all other inputs grounded.
Switching Characteristics
(V_CC = 5 V, Ta = 25°C)
Item
Symbol Inputs Outputs min. typ. max. Unit
Condition
Maximum count frequency
f_max
A
Q_A
32
42
—
MHz
B
Q_B
16
—
—
t_PLH
A
t_PHL
—
10
16
Q_A
—
12
18
t_PLH
t_PHL
A
—
46
70
Q_D
—
46
70
Propagation delay time
t_PLH
B
t_PHL
Q_B
—
10
16
C_L = 15 pF,
R_L = 2 kΩ
—
14
21
ns
t_PLH
t_PHL
B
—
21
32
Q_C
—
23
35
t_PLH
t_PHL
B
—
34
51
Q_D
—
34
51
t_PHL
Set-to-0 Q_A to Q_D —
26
40
Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-
0100)".
Rev.2.00, Feb.18.2005, page 4 of 8