1
PS8200D 02/28/02
BE
2
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
GND
BE
4
A
10
A
11
A
12
A
13
A
14
A
15
A
16
A
17
A
18
A
19
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
V
CC
BE
1
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
B
9
V
CC
BE
3
B
10
B
11
B
12
B
13
B
14
B
15
B
16
B
17
B
18
B
19
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
Product Description
Pericom Semiconductors PI3B series of Bus Switch circuits are
produced using the Companys advanced submicron CMOS
technology, achieving industry leading speed.
PI3B16862 is configured as a 3.3 Volt, 20-bit, hot-insertion 2-port
bus switch designed with a low ON resistance (5 ohms) allowing
inputs to be connected directly to outputs. The bus switch creates
no additional propagational delay or additional ground bounce
noise. The switch is turned ON by the Bus Enable (BEx) input signal.
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Truth Table
(1)
Product Pin Configuration
PI3B16862
3.3V, 20-Bit, 2-Port NanoSwitch
Product Features
Near-zero propagation delay
5 ohms or 25 ohms switches connect inputs to outputs
Fast Switching Speed - 5ns (max.)
Direct bus connection when switches are ON
32X384 function with flow through pinout make board
layout easier
Vcc Operating Range: 3.0V to 3.6V
Industrial operating temperature: 40C to +85C
Packages available:
48-pin 150-mil wide plastic BQSOP (B)
48-pin 240-mil wide plastic TSSOP (A)
48-pin 300-mil wide plastic SSOP (V)
Logic Block Diagram
48-Pin
A, B, V
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Product Pin Description
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1
A
4
A
0
B
4
B
0
BE
4
A
19
A
15
B
19
B
15
B
A
BE
SW
SW
SW
SW
SW
2
PS8200D 02/28/02
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PI3B16862
3.3V, 20-Bit, 2-Port Nano Switch
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 3.0V to 3.6V)
Capacitance
(T
A
= 25C, f = 1 MHz)
Storage Temperature ...................................................... 65C to +150C
Ambient Temperature with Power Applied ...................... 40C to +85C
Supply Voltage Range ....................................................... 0.5V to +4.6V
DC Input Voltage ............................................................... 0.5V to +4.6V
DC Output Current ........................................................................ 120mA
Power Dissipation ............................................................................. 0.5W
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at these or any other conditions above those
indicated in the operational sections of this specifica-
tion is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 25C ambient and maximum loading.
3. Measured by the voltage drop between A and B pin at indicated current through the switch. ON resistance is determined by the
lower of the voltages on the two (A,B) pins.
4. This parameter is determined by device characterization but is not production tested.
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PS8200D 02/28/02
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PI3B16862
3.3V, 20-Bit, 2-Port Nano Switch
Switching Characteristics over Operating Range
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load
capacitance. The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much
smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational
delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its
interaction with the load on the driven side.
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Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V
CC
= 3.3V, +25C ambient.
3. Per TTL driven input (control inputs only); A and B pins do not contribute to I
CC.
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified
frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is
guaranteed by design.
Power Supply Characteristics
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PS8200D 02/28/02
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PI3B16862
3.3V, 20-Bit, 2-Port Nano Switch
48-pin 240 Mil-Wide Thin Plastic TSSOP (A) Package
48-pin 300 Mil-Wide Plastic SSOP (V) Package
.236
.244
.488
.496
.002
.006
SEATING PLANE
.007
.010
.0197
BSC
.004
.008
.319
1
48
12.4
12.6
6.0
6.2
0.50
0.17
0.27
8.1
0.05
0.15
0.09
0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.018
.030
0.45
0.75
.047
1.20 Max
BSC
0.20
0.51
1.01
0.25
0.381
0.635
.008
.008
.016
0-8
0.20
0.40
.110 2.79
.010
Gauge Plane
.02
.04
.015
.025
x 45
.025 BSC
0.635
.291
.299
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
7.39
7.59
.395
.420
10.03
10.67
.620
.630
15.75
16.00
.008
.0135
0.20
0.34
1
48
Nom.
Max
5
PS8200D 02/28/02
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PI3B16862
3.3V, 20-Bit, 2-Port Nano Switch
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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4
Ordering Information
.014
.0157 BSC
0.40
0.356
.008 0.20
.002
.009
5
0.05
0.25
.079
2.0
.010 0.25
Gauge Plane
.150
.157
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
3.80
4.00
.228
.244
5.80
6.20
.020
.029
0.50
0.75
.063
1.60
.015 0.381
.386
.394
9.80
10.00
.0051
.009
0.13
0.23
1
48
x 45
BSC
Nom
Max
Nom
REF
48-pin 150 Mil-Wide Plastic BQSOP (B) Package
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the
supply voltage. For example, given a +3.3V supply, IN may be driven
low to 0V and high to 3.6V. Driving IN Rail-to-Rail minimizes power
consumption.
Power-Supply Sequencing and Hot Plug Information
Proper power-supply sequencing is recommended for all CMOS
devices. Always apply V
CC
and GND
before applying signals to
input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
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