SN74AVCH16T245_15 Datasheet, PDF (20/30 Pages) Texas Instruments – 16-Bit Dual-Supply Bus Transceiver

SN74AVCH16T245
SCES587D – AUGUST 2004 – REVISED NOVEMBER 2015
12.2 Layout Example
LEGEND
VIA to Power Plane
VIA to GND Plane (Inner Layer)
Polygonal Copper Pour
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To
System
To
System
VCCB
To
System
To
System
To
System
To
System
To
System
To
System
To
System
To
System
To
System
VCCB
To
System
To
System
To
System
To
System
To
System
1 1DIR
1OE 48
2 1B1
1A1 47
3 1B2
1A2 46
4 GND
GND 45
5 1B3
1A3 44
6 1B4
1A4 43
7
VCCB
VCCA 42
8 1B5
1A5 41
9 1B6
1A6 40
10 _GND
11 1B7
GND 39
1A7 38
12 1B8
1A8 37
SN74AVCH16T245
13 _2B1
2A1 ³⁶
14 _2B2
2A2 35
Keep OE high until VCCA and
VCCB are powered up
From
Controller
From
Controller
From
Controller
From
Controller
VCCA
From
Controller
From
Controller
Bypass Capacitor
From
Controller
From
Controller
From
Controller
From
Controller
15 _GND
GND ³⁴
16 _2B3
17 _2B4
18 VCCB
19 _2B5
20 _2B6
2A3 ³³
2A4 ³²
VCCA 31
31
2A5
2A6 ²⁹
From
Controller
From
Controller
VCCA
From
Controller
From
Controller
Bypass Capacitor
21 _GND
22 _2B7
23 _2B8
GND ²⁸
2A7 ²⁷
2A8 ²⁶
From
Controller
From
Controller
24 2DIR
2OE ₂₅
Keep OE high until VCCA and
VCCB are powered up
Figure 14. Recommended Layout Example
20
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