74ABT657 查看數據表（PDF） - NXP Semiconductors.
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74ABT657 Datasheet PDF : 17 Pages
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NXP Semiconductors
74ABT657
Octal transceiver with parity generator/checker; 3-state
5. Pinning information
5.1 Pinning
Fig 4. Pin configuration
T/R 1
A0 2
A1 3
A2 4
A3 5
A4 6
VCC 7
A5 8
A6 9
A7 10
ODD/EVEN 11
ERROR 12
74ABT657
24 OE
23 B0
22 B1
21 B2
20 B3
19 GND
18 GND
17 B4
16 B5
15 B6
14 B7
13 PARITY
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5.2 Pin description
Table 2. Pin description
Symbol
T/R
A0 to A7
VCC
ODD/EVEN
ERROR
PARITY
Pin
1
2, 3, 4, 5, 6, 8, 9, 10
7
11
12
13
B0 to B7
GND
OE
23, 22, 21, 20, 17, 16, 15, 14
18, 19
24
Description
transmit/receive input
A port input/3-state output
positive supply voltage
parity select input
error output in receive mode
parity output in transmit mode/input in
receive mode
B port input/3-state output
ground (0 V)
output enable input (active LOW)
74ABT657_3
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 03 — 15 March 2010
© NXP B.V. 2010. All rights reserved.
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