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74AHC244BQ 数据表(PDF) 3 Page - NXP Semiconductors

部件名 74AHC244BQ
功能描述  Octal buffer/line driver; 3-state
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

74AHC244BQ 数据表(HTML) 3 Page - NXP Semiconductors

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74AHC_AHCT244_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 20 December 2007
3 of 16
NXP Semiconductors
74AHC244; 74AHCT244
Octal buffer/line driver; 3-state
5.
Pinning information
5.1 Pinning
5.2 Pin description
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as
a supply pin or input.
Fig 4.
Pin configuration SO20, TSSOP20
Fig 5.
Pin configuration DHVQFN20
74AHC244
74AHCT244
1OE
VCC
1A0
2OE
2Y0
1Y0
1A1
2A0
2Y1
1Y1
1A2
2A1
2Y2
1Y2
1A3
2A2
2Y3
1Y3
GND
2A3
001aae258
1
2
3
4
5
6
7
8
9
10
12
11
14
13
16
15
18
17
20
19
001aah079
74AHC244
74AHCT244
Transparent top view
1Y3
GND(1)
1A3
2Y3
2A2
2Y2
1Y2
1A2
2A1
2Y1
1Y1
1A1
2A0
2Y0
1Y0
1A0
2OE
9
12
8
13
7
14
6
15
5
16
4
17
3
18
2
19
terminal 1
index area
Table 2.
Pin description
Symbol
Pin
Description
1OE
1
output enable input (active LOW)
1A[0:3]
2, 4, 6, 8
data input
2A[0:3]
17, 15, 13, 11 data input
1Y[0:3]
18, 16, 14, 12 data output
2Y[0:3]
3, 5, 7, 9
data output
GND
10
ground (0 V)
2OE
19
output enable input (active LOW)
VCC
20
supply voltage


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