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74VHC_VHCT245 Fiches technique(PDF) 4 Page - NXP Semiconductors

No de pièce 74VHC_VHCT245
Description  Octal bus transceiver; 3-state
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74VHC_VHCT245 Fiches technique(HTML) 4 Page - NXP Semiconductors

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74VHC_VHCT245_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 25 August 2009
4 of 16
NXP Semiconductors
74VHC245; 74VHCT245
Octal bus transceiver; 3-state
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 SO20 packages: above 70
°C the value of P
tot derates linearly at 8 mW/K.
For TSSOP20 packages: above 60
°C the value of P
tot derates linearly at 5.5 mW/K.
For DHVQFN20 packages: above 60
°C the value of P
tot derates linearly at 4.5 mW/K.
B1
17
data input/output
B0
18
data input/output
OE
19
output enable input (active LOW)
VCC
20
supply voltage
Table 2.
Pin description …continued
Symbol
Pin
Description
Table 3.
Function table[1]
Control
Input/output
OE
DIR
An
Bn
L
L
A = B
inputs
L
H
inputs
B = A
HX
Z
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
+7.0
V
VI
input voltage
−0.5
+7.0
V
IIK
input clamping current
VI < −0.5 V
[1]
−20
-
mA
IOK
output clamping current
VO < −0.5 V or VO >VCC + 0.5 V
[1]
−20
+20
mA
IO
output current
VO = −0.5 V to (VCC + 0.5 V)
−25
+25
mA
ICC
supply current
-
+75
mA
IGND
ground current
−75
-
mA
Tstg
storage temperature
−65
+150
°C
Ptot
total power dissipation
Tamb = −40 °C to +125 °C
[2] -
500
mW


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