PI3C16215 Datasheet, PDF (1/4 Pages) Pericom Semiconductor Corporation – 3.3V, 2-Port, 20-Bit Bus Switch with Precharged Outputs for Live Insertion

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3.3V, 2-Port, 20-Bit Bus Switch
with Precharged Outputs
for Live Insertion
Product Features
• Near zero propagation delay
• 5-ohm switch connection between two ports
• High Bandwidth (>200 MHz)
• Rail-to-Rail 3.3V Switching
• Outputs are precharged by bias voltage to
minimize signal distortion during live insertion
• 5V I/O Tolerant
• Package options:
– 48-pin 150 mil wide plastic BQSOP (B)
– 48-pin 240 mil wide plastic TSSOP (A)
Logic Diagram
Product Description
Pericom Semiconductor’s PI3C series of logic circuits are produced
using the Company’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.
Product Pin Configuration
1A1 ²
SW
1A10 ¹²
SW
1OE ⁴⁸
13
SW
24
SW
2OE ⁴⁷
1 _BIASV
46 _1B1
36 _1B10
35 _2B1
25 _2B10
Truth Table
OE
Function
L
A port = B port
H
A port = Z, A port = BIASV
Note:
1. H= High Voltage Level 2. L= Low Voltage Level
BIASV 1
1A1 2
1A2 3
1A3 4
1A4 5
1A5 6
1A6 7
GND 8
1A7 9
1A8 10
1A9 11
1A10 12
2A1 13
2A2 14
VCC 15
2A3 16
GND 17
2A4 18
2A5 19
2A6 20
2A7 21
2A8 22
2A9 23
2A10 24
48-Pin
A,B
48 1OE
47 2OE
46 1B1
45 1B2
44 1B3
43 1B4
42 1B5
41 GND
40 1B6
39 1B7
38 1B8
37 1B9
36 1B10
35 2B1
34 2B2
33 2B3
32 GND
31 2B4
30 2B5
29 ^2B6
28 ^2B7
27 ^2B8
26 ^2B9
25 2B10
1
PS8409D 03/19/01