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74HCT7540D Datasheet(PDF) 3 Page - NXP Semiconductors

Part # 74HCT7540D
Description  Octal Schmitt trigger buffer/line driver; 3-state; inverting Rev. 4 ??31 December 2012
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

74HCT7540D Datasheet(HTML) 3 Page - NXP Semiconductors

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74HC_HCT7540
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 4 — 31 December 2012
3 of 16
NXP Semiconductors
74HC7540; 74HCT7540
Octal Schmitt trigger buffer/line driver; 3-state; inverting
5.2 Pin description
6.
Functional description
[1]
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7.
Limiting values
[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 P
tot derates linearly with 12 mW/K.
For SO20 packages: above 70
C the value of P
tot derates linearly with 8 mW/K.
For SSOP20 packages: above 60
C the value of P
tot derates linearly with 5.5 mW/K.
Table 2.
Pin description
Symbol
Pin
Description
OE1
1
output enable input (active LOW)
A0 to A7
2, 3, 4, 5, 6, 7, 8, 9
data input
GND
10
ground (0 V)
Y0 to Y7
18, 17, 16, 15, 14, 13, 12, 11 data output
OE2
19
output enable input (active LOW)
VCC
20
supply voltage
Table 3.
Functional table[1]
Control
Input
Output
OE1
OE2
An
Yn
LL
L
H
LL
H
L
XH
X
Z
HX
X
Z
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
supply voltage
0.5
+7
V
IIK
input clamping current
VI < 0.5 V or VI >VCC +0.5 V
[1] -
20
mA
IOK
output clamping current
VO < 0.5 V or VO >VCC +0.5 V
[1] -
20
mA
IO
output current
0.5 V < V
O < VCC +0.5 V
-
35
mA
ICC
supply current
-
70
mA
IGND
ground current
70
-
mA
Tstg
storage temperature
65
+150
C
Ptot
total power dissipation
[2]
DIP20
-
750
mW
SO20, SSOP20
-
500
mW


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