PI5C34X2245 Datasheet, PDF (1/3 Pages) Pericom Semiconductor Corporation – 32-Bit, 2-Port BusSwitch with 25ohm Series Resistor

PI5C34X2245
32-BIT, 2-PORT BusSwitch
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PI5C34X2245
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Product Features:
32-Bit, 2-Port BusSwitch
with 25Ω Series Resistor
• Near-zero propagation delay
• 25Ω series resistor termination
• 5Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• Ultra-low quiescent power (0.2 µA typical)
– Ideally suited for notebook applications
• Pin compatible with QS34X245
• Industrial operating temperature: –40°C to +85°C
• Packages available:
Product Description:
Pericom Semiconductor’s PI5C series of logic circuits are produced
in the Company’s advanced 0.6 micron CMOS technology.
The PI5C34X2245 is a 32-bit, 2-port bus switch. Four enable
signals (BEn) turn the switches on. The bus switch creates no additional
propagational delay or additional ground bounce noise. The device
has a built-in 25Ω resistor to reduce noise resulting from reflection,
thus eliminating the need for an external terminating resistor.
– 80-pin 150 mil wide plastic BQSOP (B)
Product Pin Configuration
Logic Block Diagram
A0
B0
A7
B7
BE1
NC 1
A0 2
A1 3
A2 4
A3 ₅
A4 ₆
A5 7
A6 8
A7 ₉
80 VCC
79 BE1
78 B0
77 B1
76 B2
75 B3
74 B4
73 B5
72 B6
A8
B8
A15
B15
BE2
A16
B16
A23
B23
BE3
A24
B24
A31
B31
BE4
Truth Table⁽¹⁾
Function
BEn A0–31
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
10
71
11
70
12
69
13
68
14
67
15
66
16
65
17
64
18
63
19 _80-Pin 62
20 _B80 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
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
Disconnect
H
Connect
L
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Hi-Z
B0–31
Product Pin Description
Pin Name I/O
BEn
I
A0-A31
I/O
B0-B31
I/O
Description
Bus Enable Input (Active LOW)
Bus A
Bus B
200
PS8196 05/05/98