74HCT540DB データシートの表示（PDF） - NXP Semiconductors.
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74HCT540DB Datasheet PDF : 18 Pages
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NXP Semiconductors
74HC540; 74HCT540
Octal buffer/line driver; 3-state; inverting
7. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min Max Unit
VCC
IIK
IOK
IO
ICC
IGND
Tstg
Ptot
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
DIP20
VI < 0.5 V or VI > VCC + 0.5 V
VO < 0.5 V or VO > VCC + 0.5 V
0.5 V < VO < VCC + 0.5 V
0.5
[1] -
[1] -
-
-
70
65
[2]
-
+7
V
20 mA
20 mA
35 mA
70
mA
-
mA
+150 C
750 mW
SO20, SSOP20
-
500 mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For DIP20 packages: above 70 C the value of Ptot derates linearly with 12 mW/K.
For SO20 packages: above 70 C the value of Ptot derates linearly with 8 mW/K.
For SSOP20 packages: above 60 C the value of Ptot derates linearly with 5.5 mW/K.
8. Recommended operating conditions
Table 5. Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
Conditions
VCC
VI
VO
Tamb
t/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
74HC540
Min Typ
2.0 5.0
0
-
0
-
40 +25
-
-
-
1.67
-
-
Max
6.0
VCC
VCC
+125
625
139
83
74HCT540
Min Typ
4.5 5.0
0
-
0
-
40 +25
-
-
-
1.67
-
-
Max
5.5
VCC
VCC
+125
-
139
-
Unit
V
V
V
C
ns/V
ns/V
ns/V
74HC_HCT540
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 21 January 2013
© NXP B.V. 2013. All rights reserved.
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