1
PS8192D 10/08/02
1
2
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3
A
1
8
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48
47
46
45
44
43
42
41
40
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38
37
36
35
34
33
1
A
1
1
A
2
S
0
GND
2
A
1
2
A
2
VCC
3
A
2
GND
4
A
1
4
A
2
5
A
1
5
A
2
6
A
2
GND
6
A
1
7
A
1
7
A
2
GND
8
A
1
8
A
2
9
A
1
9
A
2
3
B
1
1
B
1
1
B
2
S
1
2
B
1
2
B
2
GND
3
B
2
GND
4
B
1
4
B
2
5
B
1
5
B
2
GND
6
B
1
6
B
2
7
B
1
7
B
2
GND
8
B
1
8
B
2
9
B
1
9
B
2
S
2
32
31
30
29
28
27
26
25
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PI3B16209
Product Description
Pericom Semiconductor's PI3B series of logic circuits are produced
using the Company's advanced submicron CMOS technology.
The PI3B16209 is a 3.3 volt, 18-bit bus exchange switches designed
with a low On-resistance (5 ohms) allowing inputs to be connected
directly to outputs. The devices operate as either a 18-bit bus
switch or as a 9-bit exchanger, providing data exchange between
four signal ports via the data select pins (S0-S2).
Product Features
Near-zero propagation delay
5-ohm switches connect inputs to outputs
Fast Switching speed - 5ns (max.)
Operating Range: 3.0V to 3.6V
Industrial operating temperature: 40C to +85C
Packages available:
48-pin, 240-mil wide thin plastic TSSOP (A)
48-pin, 300-mil wide plastic SSOP (V)
Logic Block Diagram
Pin Configuration
Truth Table
Pin Description
Note:
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
48-Pin
A, V
3.3V, 18-Bit Bus Exchange NanoSwitchTM
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2
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1
S
0
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2
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L
L
L
Z
Z
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B
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B
Z
2
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1
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L
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B
x
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/
I
B
s
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B
1A1
1B1
1A2
1B2
FLOW CONTROL
ONE OF NINE CHANNELS
S0
S1
S2
SW
SW
SW
SW
A
B
Sx
SW
PI3B16209
3.3V, 18-Bit Bus-Exchange NanoSwitch
2
PS8192D 10/08/02
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Capacitance
(T
A
= 25C, f = 1 MHz)
Storage Temperature .................................................... 65C to +150C
Ambient Temperature with Power Applied ...................... 0C 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
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 3.0V to 3.6V)
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.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
Stresses greater than those listed under MAXIMUM RAT-
INGS 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 sec-
tions of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
reliability.
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3
PI3B16209
3.3V, 18-Bit Bus-Exchange NanoSwitch
3
PS8192D 10/08/02
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Power Supply Characteristics
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 input 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.
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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PI3B16209
3.3V, 18-Bit Bus-Exchange NanoSwitch
4
PS8192D 10/08/02
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Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
48-Pin TSSOP (A) Package
48-Pin 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
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8
4
Ordering Information
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 registeredtrademark of Nippon Motorola, Ltd.
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