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74LVC244 Datasheet(PDF) 3 Page - NXP Semiconductors

Part # 74LVC244
Description  Octal buffer/line driver with 5-volt tolerant inputs/outputs 3-Statetitle
PDF  10 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74LVC244 Datasheet(HTML) 3 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74LVC244A
74LVCH244A
Octal buffer/line driver with 5-volt
tolerant inputs/outputs (3-State)
1998 May 20
3
PIN DESCRIPTION
PIN NUMBER
SYMBOL
FUNCTION
1
1OE
Output enable input (active LOW)
2, 4, 6, 8
1A0 to 1A‘3 Data inputs
3, 5, 7, 9
2Y0 to 2Y3
Bus outputs
10
GND
Ground (0V)
17, 15, 13, 11
2A0 to 2A3
Bus inputs
18, 16, 14, 12
1Y0 to 1Y3
Bus outputs
19
2OE
Output enable input (active-LOW)
20
VCC
Positive supply voltage
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
1Y3
GND
2A2
1Y2
2A1
1Y1
2A0
1Y0
2OE
VCC
2A3
SV00212
LOGIC SYMBOL (IEEE/IEC)
1
2
18
4
16
6
14
8
12
19
11
9
13
7
15
5
17
3
EN
EN
SV00209
FUNCTION TABLE
INPUTS
OUTPUT
nOE
nAn
nYn
L
L
L
L
H
H
H
X
Z
H = HIGH voltage level
L
= LOW voltage level
X = Don’t care
Z = High impedance OFF-state
LOGIC SYMBOL
2
4
6
8
1
18
16
14
12
1A0
1A1
1A2
1A3
1OE
1Y0
1Y1
1Y2
1Y3
17
15
13
11
19
3
5
7
9
2A0
2A1
2A2
2A3
2OE
2Yo
2Y1
2Y2
2Y3
SV00210
FUNCTIONAL DIAGRAM
2
4
6
8
1
18
16
14
12
1A0
1A1
1A2
1A3
1OE
1Y0
1Y1
1Y2
1Y3
17
15
13
11
19
3
5
7
9
2A0
2A1
2A2
2A3
2OE
2Yo
2Y1
2Y2
2Y3
SV00211



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