HD74LS248FPEL Ver la hoja de datos (PDF) - Renesas Electronics
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HD74LS248FPEL Datasheet PDF : 7 Pages
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HD74LS248
Recommended Operating Conditions
Item
Symbol
Min
Typ
Max
Unit
Supply voltage
Operating temperature
VCC
4.75
5.00
5.25
V
Topr
–20
25
75
°C
a to g
—
—
–100
µA
IOH
BI/RBO
—
—
–50
µA
Output current
a to g
—
—
6
mA
IOL
BI/RBO
—
—
3.2
mA
a
f gb
e
c
d 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Electrical Characteristics
Item
Symbol min. typ.* max. Unit
Input voltage
VIH
2.0
—
—
V
VIL
—
—
0.8
V
Output
voltage
a to g
BI/RBO
VOH
2.4
—
—
V
Output
current**
a to g
IO
–1.3
—
—
mA
Output
voltage
—
—
0.4
a to g
—
—
0.5
VOL
—
—
0.4
V
BI/RBO
—
—
0.5
Except
BI/RBO
IIH
—
—
20
µA
Except
Input current BI/RBO
IIL
BI/RBI
—
—
–0.4
mA
—
—
–1.2
Except
BI/RBO
II
—
—
0.1
mA
Short-circuit
BI/RBO
output current
IOS
–0.3
—
–2
mA
Supply current***
ICC
—
25
38
mA
Input clamp voltage
VIK
—
—
–1.5
V
Notes: * VCC = 5 V, Ta = 25°C
** Input condition as for VOH.
*** ICC is measured with all outputs open and all inputs at 4.5 V.
(Ta = –20 to +75 °C)
Condition
IOH = –100 µA VCC = 4.75 V, VIH = 2 V,
IOH = –50 µA VIL = 0.8 V
VCC = 4.75 V, VO = 0.85 V
IOL = 2 mA
IOL = 6 mA
IOL = 1.6 mA
IOL = 3.2 mA
VCC = 4.75 V, VIH = 2 V,
VIL = 0.8 V
VCC = 5.25 V, VI = 2.7 V
VCC = 5.25 V, VI = 0.4 V
VCC = 5.25 V, VI = 7 V
VCC = 5.25 V
VCC = 5.25 V
VCC = 4.75 V, IIN = –18 mA
Switching Characteristics
Item
Propagation delay time
(VCC = 5 V, Ta = 25°C)
Symbol Input
min.
typ.
max.
Unit
Condition
tPLH
tPHL
—
—
100
A
—
—
100
ns CL = 15 pF, RL = 4 kΩ
tPLH
tPHL
—
—
100
RBI
—
—
100
ns CL = 15 pF, RL = 6 kΩ
Rev.3.00, Jul.15.2005, page 4 of 6
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