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PI3L100
3.3V, Wide Bandwidth Quad 2:1
Mux/Demux LanSwitch
Features
• Replaces mechanical relays
• High-performance, low-cost solution for switching
between different LAN signals
• Ultra-low quiescent power (0.1µA typical)
• Low crosstalk: –90dB @ 30 MHz
• Low insertion loss or on-resistance: 3Ω typical
• Single supply operation: 3.3V
• Off isolation: –45dB @ 30 MHz
• Wide bandwidth data rates > 200 MHz
• Packages available:
– 16-pin 150 mil wide plastic QSOP (Q)
– 16-pin 173 mil wide plastic TSSOP (L)
Logic Block Diagram
IA
1
IB
0
IA
0
E
IB
Description
Pericom Semiconductor’s PI3L series of logic circuits are produced
using the Company’s advanced submicron CMOS technology.
The PI3L100 is a Quad 2:1 multiplexer/demultiplexer LanSwitch
with three-state outputs. This device can be used for switching
between various standards, such as 10 Base-T and 100 Base-T.
Generally, this part can be used to replace mechanical relays in low
voltage LAN applications that have physical layer, unshielded
twisted pair media (UTP) with either CAT 3 or CAT 5 grade cable.
16-Pin Product Configuration
1
1
IC
0
IC
1
ID
0
ID
1
IA0
IA1
YA
IB0
IB1
YB
GND
S
2
3
4
5
6
7
8
16-Pin
W,L
16
V
CC
15
E
14
ID0
13
ID1
12
YD
11
IC0
10
IC1
9
YC
Product Pin Description
S
YA YB YC YD
Truth Table
(1)
E S Y A YB Y C Y D Function
H X Hi-Z Hi-Z Hi-Z Hi-Z Disable
L L IA0 IB0 IC0 ID0 S = 0
L H IA1 IB1 IC1 ID1 S = 1
Note:
1. H = High Voltage Level
L = Low Voltage Level
1
Pin Name Description
IAn-IDn Data Inputs
S Select Inputs
E Enable
YA-YD Data Outputs
GND Ground
VCC Power
PS8504 11/13/00
Page 2
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ............................................................. –65°C to +150°C
Ambient Temperature with Power Applied................................. 0°C to +70°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) ...... –0.5V to +4.6V
Supply Voltage to Ground Potential (Outputs & D/O Only) ... –0.5V to +4.6V
DC Input Voltage ..................................................................... –0.5V to +4.6V
DC Output Current ............................................................................... 120 mA
Power Dissipation......................................................................................0.5W
PI3L100
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 specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect reliability.
DC Electrical Characteristics (Over the Operating Range, T
sretemaraPnoitpircseD)1(snoitidnoCtseT.niMpyT
R
∆R
V
HI
V
LI
I
HI
I
LI
I
HZO
V
KI
I
SO
V
H
)6(ecnatsiseRnOhctiwS
NO
NO
egatloVHGIHtupnIleveLHGIHcigoLdeetnarauG0.2——
egatloVWOLtupnIleveLWOLcigoLdeetnarauG5.0–—8.0
tnerruCHGIHtupnIV
tnerruCWOLtupnIV
CC
CC
tnerruCtuptuOecnadepmIhgiH0≤ B,A ≤ V
egatloVedoiDpmalCV
)3(
tnerruCtiucriCtrohS
CC
sniPlortnoCtasiseretsyHtupnI—051—Vm
V
CC
V
CC
hctaMecnatsiseRnOV
NI
= 0°C to +70°C, VCC = 3.3V ±5%)
A
)2(
.xaMstinU
V
V,.xaM=
V=
NI
V,.xaM=
NI
CC
I,.niM=
NI
V,.niM=
NI
V,.niM=
NI
CC
DNG=——1±
Am81–=—2.1–V
V=)A(B,V0=)B(A
CC
I,V0=
NO
I,V4.2=
Am84=—57
NO
—— 1±
—— 1±
001——Am
Am51=—0151
µA
Ω
WOL=E,V0.3=———
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for applicable device type.
2. Typical values are at VCC = 3.3V, TA = 25°C ambient temperature.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. VON (min) value is at VCC = 3.3V, TA = 70°C.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters
C
IN
C
OFF
C
ON
C
OFF
Note:
1. This parameter is determined by device characterization but is not production tested.
(1)
Description Test Conditions Typ Max. Units
Input Capacitance VIN = 0V 3 pF
Capacitance, Switch Off (Y) VIN = 0V 17 pF
Capacitance, Switch On VIN = 0V 25 pF
Capacitance, Switch Off (A/B) VIN = 0V 8 pF
2
PS8504 11/13/00
Page 3
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
Power Supply Characteristics
Parameters Description Test Conditions
PI3L100
(1)
Min. Typ
(2)
Max. Units
I
CC
Quiescent Power VCC = Max. VIN = GND or V
CC
— 0.1 3.0 µA
Supply Current
∆I
CC
Supply Current per VCC = Max. VIN = 3.4V
(3)
— — 750 µA
Input @ TTL HIGH
I
CCD
Supply Current per VCC = Max., — — 0.25 mA/
Input per MHz
(4)
Input Pins Open MHz
E = GND
Control Input Toggling
50% Duty Cycle
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input (VIN = 3.0V, control inputs only); A and B pins do not contribute to ICC.
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
PI3L100
Com.
Parameters Description Conditions
t
PLH
Propagation Delay
(2,3)
In to Y
t
SY
Bus Enable Time CL = 50pF 1 — 4.5 ns
S to Y RL = 500Ω
X
t
PHZ
t
PLZ
TALK
Bus Disable Time 1 — 4.5 ns
E to Y
Crosstalk RL = 100Ω — –90 — dB
f = 30 MHz
See Figure 2
O
IRR
Off Isolation RL = 100Ω — –45 — dB
f = 30 MHz
B
W
–3dB Bandwidth RL = 100Ω — 213 — MHz
See Figure 2
t
t
OFF
ON
Turn On Time RL = 100Ω ———ns
Turn Off Time CL = 35pF — — — ns
See Figure 1
(1)
Min Typ Max Unit
— — 0.25 ns
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested.
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.
3
PS8504 11/13/00
Page 4
Applications
PI3L100
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
LAN Switch
The PI3L100 was designed to switch between various
standards such as 10Base-T, 100Base-T, 100VGAnyLAN, and Token Ring. Also general purpose applications such as loopback, line termination, and line
clamps that might normally use mechanical relays are
also ideal uses for this LAN Switch (see Figure 1).
Generally speaking, this LAN Switch can be used
for data rates to 200 Mbps and data signal levels from 0V
to 3.6V.
LAN Standards Data Rate per twisted pair (UTP)
10Base-T 10 Mbps
100Base-T 100 Mbps
100VG-AnyLAN 25 Mbps
Test Circuits
3.3V
VCC Bias Voltage vs. RON
To keep RON to a minimum, it is recommended that the
voltage be increased to a voltage between 3.3V and
V
CC
3.6V. Ideally an input voltage between 0.2V and 3.6V will
keep R
ON
flat.
Signal Distortion
Distortion of the input signal is equated to 20LOG
∆R
. So keeping RON flat as the data signal level
ON/RL
varies is critical to low distortion. It should also be noted
that increasing the data rate increases harmonic distortion which also effects the signal amplitude.
Vcc
3V
SD
I
N
PI3L100
GND
Ordering Information
traPegakcaPniPerutarepmeT
Q001L3IP)Q(POSQ61C°58+otC°04–
L001L3IP)L(POSST61C°58+otC°04–
EN
75Ω
DIGITAL
INPUT
V
OUT
35 pF
ANALOG
OUTPUT
Figure 1. Switching Time
50%
90%
t
ON
50%
90%
t
OFF
4
PS8504 11/13/00
Page 5
DSO
PI3L100
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
HP4195A
S1 R1 T1
HP11667A
PI3L100
100Ω
Figure 2. Gain/Phase Crosstalk, Off Isolation
VCC = 3.3V
0.1µF
S
1
IA0
2
IA1
3
YA
100Ω
V
o
100Ω
IB0
IB1
YB
GND
4
5
6
7
8
PI3L100
16
15
14
13
12
11
10
V
CC
Z
ID0
ID1
YD
IC0
IC1
YC
9
100Ω
100Ω
PULSE
GENERATOR
Figure 3. Differential Crosstalk Measurement
TRANSMIT 2
TX1
PI3L100
RX1
RECEIVE 2 OFFSET ADJUST
Figure 4a. Full Duplex Transceiver
5
PS8504 11/13/00
Page 6
TX1
RX1
PI3L100
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
100Ω120Ω
Figure 4c. Line Termination
Figure 4b. Loop Back
Figure 4d. Line Clamp
LIFE SUPPORT POLICY
Pericom Semiconductor Corporation’s products are not authorized for use as critical components in life support devices or
systems unless a specific written agreement pertaining to such intended use is executed between the manufacturer and an officer
of PSC.
1. Life support devices or systems are devices or systems which:
(a ) are intended for surgical implant into the body, or
(b) support or sustain life and whose failure to perform, when properly used in accordance with instructions for
use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
2 . A critical component is any component of a life support device or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Pericom Semiconductor Corporation reserves the right to make changes to its products or specifications at any time, without
notice, in order to improve design or performance and to supply the best possible product. Pericom Semiconductor does not
assume any responsibility for use of any circuitry described other than the circuitry embodied in a Pericom Semiconductor
product. The Company makes no representations that circuitry described herein is free from patent infringement or other rights
of third parties which may result from its use. No license is granted by implication or otherwise under any patent, patent rights,
or other rights, of Pericom Semiconductor Corporation.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
6
PS8504 11/13/00
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