HD74LS148 データシートの表示（PDF） - Renesas Electronics
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HD74LS148 Datasheet PDF : 6 Pages
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HD74LS148
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Symbol
VCC
IOH
IOL
Topr
Min
4.75
—
—
–20
Typ
5.00
—
—
25
Max
5.25
–400
8
75
Unit
V
µA
mA
°C
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Symbol min.
typ.*
max.
Unit
Condition
Input voltage
VIH
2.0
—
—
V
VIL
—
—
0.8
V
Output voltage
VOH
2.7
—
—
—
—
0.4
VOL
—
—
0.5
V
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,
IOH = –400 µA
V
IOL = 4 mA VCC = 4.75 V, VIH = 2 V,
IOL = 8 mA VIL = 0.8 V
1 to 7 Inputs
—
—
40
Other inputs
IIH
—
—
20
µA
VCC = 5.25 V, VI = 2.7 V
Input 1 to 7 Inputs
—
—
–0.8
current Other inputs
IIL
—
—
–0.4
mA VCC = 5.25 V, VI = 0.4 V
1 to 7 Inputs
Other inputs
II
—
—
0.2
—
—
0.1
mA VCC = 5.25 V, VI = 7 V
Short-circuit output
current
IOS
–20
—
–100
mA VCC = 5.25 V
Supply current**
—
12
20
mA Condition 1
ICC
—
10
17
mA
Condition 2 VCC = 5.25 V
Input clamp voltage
VIK
—
—
–1.5
V
VCC = 4.75 V, IIN = –18 mA
Notes: * VCC = 5 V, Ta = 25°C
** The condition 1 is measured with inputs 7 and EI grounded, other inputs and outputs open, the condition 2 is
measured with all inputs and outputs open.
Switching Characteristics
Item
Symbol min.
typ.
tPLH
—
14
tPHL
—
15
tPLH
—
20
tPHL
—
16
tPLH
—
7
tPHL
—
25
Propagation
tPLH
—
35
delay time
tPHL
—
9
tPLH
—
16
tPHL
—
12
tPLH
—
12
tPHL
—
14
tPLH
—
12
tPHL
—
23
max.
18
25
36
29
18
40
55
21
25
25
17
36
21
35
(VCC = 5 V, Ta = 25°C)
Unit
Inputs Outputs
Output
Waveforms
Condition
ns
0 to 7
A0, A1
or A2
In-phase
Output
ns
0 to 7
A0, A1
Out-of-phase
or A2
Output
Out-of-phase
ns
0 to 7
EO
Output
ns
0 to 7
GS
In-phase
Output
CL = 15 pF,
RL = 2 kΩ
ns
EI
A0, A1
In-phase
or A2
Output
In-phase
ns
EI
GS
Output
In-phase
ns
EI
EO
Output
Rev.2.00, Feb.18.2005, page 3 of 5
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