74AHCT244BQ データシートの表示（PDF） - NXP Semiconductors.
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74AHCT244BQ Datasheet PDF : 16 Pages
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NXP Semiconductors
74AHC244; 74AHCT244
Octal buffer/line driver; 3-state
5. Pinning information
5.1 Pinning
1OE 1
1A0 2
2Y0 3
1A1 4
2Y1 5
1A2 6
2Y2 7
1A3 8
2Y3 9
GND 10
74AHC244
74AHCT244
20 VCC
19 2OE
18 1Y0
17 2A0
16 1Y1
15 2A1
14 1Y2
13 2A2
12 1Y3
11 2A3
001aae258
Fig 4. Pin configuration SO20, TSSOP20
terminal 1
index area
74AHC244
74AHCT244
1A0 2
2Y0 3
1A1 4
2Y1 5
1A2 6
2Y2 7
1A3 8
2Y3 9
GND(1)
19 2OE
18 1Y0
17 2A0
16 1Y1
15 2A1
14 1Y2
13 2A2
12 1Y3
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Transparent top view
(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 5. Pin configuration DHVQFN20
5.2 Pin description
Table 2.
Symbol
1OE
1A[0:3]
2A[0:3]
1Y[0:3]
2Y[0:3]
GND
2OE
VCC
Pin description
Pin
Description
1
output enable input (active LOW)
2, 4, 6, 8
data input
17, 15, 13, 11 data input
18, 16, 14, 12 data output
3, 5, 7, 9
data output
10
ground (0 V)
19
output enable input (active LOW)
20
supply voltage
74AHC_AHCT244_5
Product data sheet
Rev. 05 — 20 December 2007
© NXP B.V. 2007. All rights reserved.
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