PI3VT34X245 Datasheet, PDF (1/4 Pages) Pericom Semiconductor Corporation – 32-Bit, 2-Port, Low Voltage Translator Bus Switch

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32-Bit, 2-Port, Low Voltage
Translator Bus Switch
Product Features
• Near zero propagation delay
• Low ON resistance switches connect inputs to outputs
• 2.5V Supply Voltage Operation
• 2.5V or 1.8V switching
• Packages available:
– 80-pin, 150 mil wide plastic BQSOP (B)
Applications
• 3.3V to 2.5V level shifting (voltage translation)
• 2.5V to 1.8V level shifting (voltage translation)
Product Description
Pericom Semiconductor’s PI3VT series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
The PI3VT34X245, is a 2.5V or 3.3V 8-bit, 2-port bus switch, is
designed with a low ON resistance (5 ohms). The switches are turned
ON or enabled by the Bus Enable (BEn) input signal.
Given a 3.3V supply and an input voltage of 3.3V, the switch
translates to an output voltage of 2.5V. Similarly, when operated with
a 2.5V supply and given 2.5V inputs, the device translates the
outputs to 1.8V.
Logic Block Diagram
A0
A7
BE1
A8
A15
BE2
A16
A23
BE3
A24
A31
BE4
B0
B7
B8
B15
B16
B23
B24
B31
Product Pin Configuration
NC
A0
A1
A2
A3
A4
A5
A6
A7
GND
NC
A8
A9
A10
A11
A12
A13
A14
A15
GND
NC
A16
A17
A18
A19
A20
A21
A22
A23
GND
NC
A24
A25
A26
A27
A28
A29
A30
A31
GND
1
80
2
79
3
78
4
77
5
76
6
75
7
74
8
73
9
72
10
71
11
70
12
69
13
68
14
67
15
66
16 80-Pin 65
17
B
64
18
63
19
62
20
61
21
60
22
59
23
58
24
57
25
56
26
55
27
54
28
53
29
52
30
51
31
50
32
49
33
48
34
47
35
46
36
45
37
44
38
43
39
42
40
41
VCC
BE1
B0
B1
B2
B3
B4
B5
B6
B7
VCC
BE2
B8
B9
B10
B11
B12
B13
B14
B15
VCC
BE3
B16
B17
B18
B19
B20
B21
B22
B23
VCC
BE4
B24
B25
B26
B27
B28
B29
B30
B31
1
PS8531 03/19/01