74HC7540 查看數據表（PDF） - Nexperia B.V. All rights reserved
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产品描述 (功能)
比赛名单
74HC7540
Nexperia B.V. All rights reserved
74HC7540 Datasheet PDF : 15 Pages
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Nexperia
74HC7540; 74HCT7540
Octal Schmitt trigger buffer/line driver; 3-state; inverting
5.2 Pin description
Table 2.
Symbol
OE1
A0 to A7
GND
Y0 to Y7
OE2
VCC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
18, 17, 16, 15, 14, 13, 12, 11
19
20
6. Functional description
Description
output enable input (active LOW)
data input
ground (0 V)
data output
output enable input (active LOW)
supply voltage
Table 3.
Control
OE1
L
L
X
H
Functional table[1]
OE2
L
L
H
X
Input
An
L
H
X
X
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
Output
Yn
H
L
Z
Z
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
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
SO20, SSOP20
0.5
[1]
-
[1]
-
-
-
70
65
[2]
-
+7 V
20 mA
20 mA
35 mA
70 mA
- mA
+150 C
500 mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO20 package: above 70 C the value of Ptot derates linearly with 8 mW/K.
For SSOP20 package: above 60 C the value of Ptot derates linearly with 5.5 mW/K.
74HC_HCT7540
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 26 May 2016
© Nexperia B.V. 2017. All rights reserved
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