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74ABT623DB Datasheet PDF : 15 Pages
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NXP Semiconductors
74ABT623
Octal transceiver with dual enable; non-inverting; 3-state
5. Pinning information
5.1 Pinning
74ABT623
OEAB 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
20 VCC
19 OEBA
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
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Fig 4. Pin configuration SO20
74ABT623
OEAB 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
20 VCC
19 OEBA
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
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Fig 5. Pin configuration (T)SSOP20
5.2 Pin description
Table 2.
Symbol
OEAB
A0 to A7
B0 to B7
GND
OEBA
VCC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
18, 17, 16, 15, 14, 13, 12, 11
10
19
20
6. Functional description
Description
output enable input (active HIGH)
data input or output
data input or output
ground (0 V)
output enable input (active LOW)
supply voltage
Table 3.
Input
OEAB
L
H
L
H
H
Function table[1]
OEBA
L
H
H
L
L
Input or output
An
An = Bn
input
Z
An = Bn
input
[1] H = HIGH voltage level; L = LOW voltage level; Z = high-impedance OFF-state.
Bn
input
Bn = An
Z
input
Bn = An
74ABT623_3
Product data sheet
Rev. 03 — 22 October 2009
© NXP B.V. 2009. All rights reserved.
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