Datasheet

74AHC_AHCT245_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 28 April 2009 3 of 16
NXP Semiconductors
74AHC245; 74AHCT245
Octal bus transceiver; 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 3. Pin configuration SO20, TSSOP20 Fig 4. Pin configuration DHVQFN20
74AHC245
74AHCT245
DIR V
CC
A0 OE
A1 B0
A2 B1
A3 B2
A4 B3
A5 B4
A6 B5
A7 B6
GND B7
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1
2
3
4
5
6
7
8
9
10
12
11
14
13
16
15
18
17
20
19
001aak038
74AHC245
74AHCT245
Transparent top view
B6
A6
A7
B5
A5 B4
A4 B3
A3 B2
A2 B1
A1 B0
A0 OE
GND
B7
DIR V
CC
9
12
8 13
7 14
6 15
5 16
4 17
3 18
2 19
10 11
1
20
terminal 1
index area
GND
(1)
Table 2. Pin description
Symbol Pin Description
DIR 1 direction control input
A0 2 data input/output
A1 3 data input/output
A2 4 data input/output
A3 5 data input/output
A4 6 data input/output
A5 7 data input/output
A6 8 data input/output
A7 9 data input/output
GND 10 ground (0 V)
B7 11 data input/output
B6 12 data input/output
B5 13 data input/output
B4 14 data input/output
B3 15 data input/output
B2 16 data input/output