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74HCT244 Arkusz danych(PDF) 5 Page - NXP Semiconductors

Numer części 74HCT244
Szczegółowy opis  Octal buffer/line driver; 3-state
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HCT244 Arkusz danych(HTML) 5 Page - NXP Semiconductors

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74HC_HCT244_3
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 22 December 2005
5 of 22
Philips Semiconductors
74HC244; 74HCT244
Octal buffer/line driver; 3-state
7.
Functional description
7.1 Function table
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
8.
Limiting values
2A1
15
2 data input 1
1Y1
16
1 bus output 1
2A0
17
2 data input 0
1Y0
18
1 bus output 0
2OE
19
2 output enable input (active LOW)
VCC
20
supply voltage
Table 3:
Pin description …continued
Symbol
Pin
Description
Table 4:
Function table [1]
Control
Input
Output
nOE
nAn
nYn
LLL
HH
HX
Z
Table 5:
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
-
±20
mA
IOK
output clamping current
VO < −0.5 V or
VO >VCC + 0.5 V
-
±20
mA
IO
output current
VO = −0.5 V to (VCC + 0.5 V)
-
±35
mA
ICC
quiescent supply current
-
70
mA
IGND
ground current
-
−70
mA
Tstg
storage temperature
−65
+150
°C
Ptot
total power dissipation
DIP20 package
[1] -
750
mW
SO20 package
[2] -
500
mW
SSOP20 package
[3] -
500
mW
TSSOP20 package
[3] -
500
mW
DHVQFN20 package
[4] -
500
mW


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