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PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch
with Precharged Outputs
for Live Insertion
Product Features
聲 Near zero propagation delay
聲 5-ohm switch connection between two ports
聲 High Bandwidth (>200 MHz)
聲 Rail-to-Rail 3.3V Switching
聲 Outputs are precharged by bias voltage to
minimize signal distortion during live insertion
聲 5V I/O Tolerant
聲 Package options:
聳 48-pin 150 mil wide plastic BQSOP (B)
聳 48-pin 240 mil wide plastic TSSOP (A)
Product Description
Pericom Semiconductor聮s PI3C series of logic circuits are produced
using the Company聮s advanced submicron CMOS technology,
achieving industry leading performance.
The PI3C16215 is a 20-bit bus switch with low ON-State resistance.
The bus switch creates no additional propagation delay. To minimize
live-insertion noise, the device also precharges the B port to a user-
selectable bias voltage (BIASV).
The switch is turned on by a single enable (OE) input. When OE is
LOW, the switch is on and port A is connnected to port B. When
OE is HIGH, the switch between port A and port B is open and
the B port is precharged to BIASV through the equivalent of a
10k-ohm resistor.
Logic Diagram
1
BIASV
1
A
1
2
SW
46
1
B
1
Product Pin Configuration
BIASV
1A1
1A2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
1OE
2OE
1B1
1B2
1B3
1B4
1B5
GND
1B6
1B7
1B8
1B9
1B10
2B1
2B2
2B3
GND
2B4
2B5
2B6
2B7
2B8
2B9
2B10
1
A
10 12
SW
36
1
B
10
1A3
1A4
1A5
1
OE
48
1A6
GND
1A7
2
B
1
13
SW
35
1A8
1A9
1A10
48-Pin
A,B
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
SW
25
2
B
10
2A1
2A2
VCC
2A3
GND
2A4
2
OE
47
Truth Table
OE
L
H
A port = B port
A port = Z, A port = BIASV
Function
2A5
2A6
2A7
2A8
2A9
2A10
Note:
1. H= High Voltage Level 2. L= Low Voltage Level
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PS8409D
03/19/01
PERICOM
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