WS74HC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
PIN DESCRIPTION
PIN NO.
SYMBOL
1
2, 3, 4, 5, 6, 7, 8, 9
10
18, 17, 16, 15, 14, 13, 12, 11
19
20
PAD DIAGRAM
DIR
A1 – A8
V
SS
B1 – B8
OE
V
DD
Direction control
Data inputs / Outputs
Ground (0V)
Data inputs / Outputs
Output enable input (active Low)
Positive power supply
B7
B8
VSS
A8
A7
B6
A6
B5
WS74
HC245
Die Size = 69 mil x 72 mil
Pad size = 90 um x 90 um
B4
A4
A5
B3
A3
B2
B1
OE
V
DD
DIR
A1
A2
The Coordinate of Low Left Corner for Each Pad
B2 (-741.9, -722.4)
A3 ( 651.8, -503.2)
B8 (-267.8, 657.6)
B1 (-558.3, -747.1)
A4 ( 651.8, -124.2)
B7 (-466.6, 657.6)
OE (-288.0, -747.1)
A5 ( 651.8, 74.6)
B6 (-741.9, 506.6)
VDD(-111.4, -742.5)
A6 ( 651.8, 454.0)
B5 (-741.9, 236.8)
DIR ( 85.8, -747.1)
A7 ( 559.5, 657.6)
B4 (-741.9, -143.4)
A1 ( 262.6, -747.1)
A8 ( 179.3, 657.6)
B3 (-741.9, -342.2)
A2 ( 642.8, -747.1)
VSS ( 2.7, 658.6)
6
WINGS [ WING SHING COMPUTER COMPONENTS ]
