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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 (0.1A typical) * Low crosstalk: -90dB @ 30 MHz * Low insertion loss or on-resistance: 3 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)
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.
Logic Block Diagram
IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1
16-Pin Product Configuration
S IA0 IA1 YA IB0 IB1 YB GND
1 2 3 4 5 6 7 8 16 15 14
16-Pin W,L
13 12 11 10 9
VCC E ID0 ID1 YD IC0 IC1 YC
E
Product Pin Description
S
YA
YB
YC
YD
Pin Name IAn-IDn S E YA-YD GND VCC
Description Data Inputs Select Inputs Enable Data Outputs Ground Power
Truth Table(1)
E H L L S X L H YA Hi-Z IA0 IA1 YB Hi-Z IB0 IB1 YC Hi-Z IC0 IC1 YD Hi-Z ID0 ID1 Function Disable S=0 S=1
Note: 1. H = High Voltage Level L = Low Voltage Level
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PI3L100 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 ............................................................. -65C to +150C Ambient Temperature with Power Applied ................................. 0C to +70C 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 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, TA = 0C to +70C, VCC = 3.3V 5%)
Parame te rs VIH VIL IIH IIL IOZH VIK IOS VH RON(6) RON De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND M in. 2.0 -0 . 5 -- -- -- Typ(2) M ax. Units -- -- -- -- -- -- 10 0 -- VCC = Min., VIN = 0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA On Resistance Match VIN = 3.0V, E = LOW -- -- -- -- 15 0 5 10 -- -- 0.8 1 1 1 -1.2 -- -- 7 15 -- V mA mV A V
High Impedance Output Current 0 A, B VCC Clamp Diode Voltage Short Circuit Current(3) Input Hysteresis at Control Pins Switch On Resistance VCC = Min., IIN = -18mA A (B) = 0V, B (A) = VCC
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 = 25C 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 = 70C.
Capacitance (TA = 25C, f = 1 MHz)
Parameters(1) CIN COFF CON COFF Description Input Capacitance Capacitance, Switch Off (Y) Capacitance, Switch On Capacitance, Switch Off (A/B) Test Conditions VIN = 0V VIN = 0V VIN = 0V VIN = 0V Typ Max. 3 17 25 8 Units pF pF pF pF
Note: 1. This parameter is determined by device characterization but is not production tested.
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PI3L100 3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
Power Supply Characteristics
Parameters Description ICC ICC ICCD Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) VCC = Max. VCC = Max. VCC = Max., Input Pins Open E = GND Control Input Toggling 50% Duty Cycle Test Conditions(1) VIN = GND or VCC VIN = 3.4V(3) Min. -- -- -- Typ(2) 0.1 -- -- Max. 3.0 750 0.25 Units A A mA/ MHz
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, +25C 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. Min Typ Max -- CL = 50pF RL = 500 1 1 RL = 100 f = 30 MHz See Figure 2 RL = 100 f = 30 MHz RL = 100 See Figure 2 RL = 100 CL = 35pF See Figure 1 -- -- -- -- -90 0.25 4.5 4.5 --
Parameters tPLH tSY tPHZ tPLZ XTALK
Description Propagation Delay(2,3) In to Y Bus Enable Time S to Y Bus Disable Time E to Y Crosstalk
Conditions(1)
Unit ns ns ns dB
OIRR BW
Off Isolation -3dB Bandwidth Turn On Time Turn Off Time
-- -- -- --
-45 213 -- --
-- -- -- --
dB MHz ns ns
tON tOFF
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.
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PI3L100 3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
Applications
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 10Base-T 100Base-T 100VG-AnyLAN Data Rate per twisted pair (UTP) 10 Mbps 100 Mbps 25 Mbps VCC Bias Voltage vs. RON To keep RON to a minimum, it is recommended that the VCC voltage be increased to a voltage between 3.3V and 3.6V. Ideally an input voltage between 0.2V and 3.6V will keep RON flat. Signal Distortion Distortion of the input signal is equated to 20LOG RON/RL. So keeping RON flat as the data signal level 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.
Test Circuits
3.3V
Vcc 3V IN PI3L100 GND EN S D 75 35 pF VOUT
DIGITAL INPUT ANALOG OUTPUT
tON
50%
50%
90%
90%
tOFF
Figure 1. Switching Time Ordering Information
Part
PI3L100Q PI3L100L
Pin
16 16
Package
QSOP (Q) TSSOP (L)
Te mpe rature
-40C to +85C -40C to +85C
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HP4195A S1 R1 T1 HP11667A
PI3L100 3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
PI3L100 100
Figure 2. Gain/Phase Crosstalk, Off Isolation
VCC = 3.3V 0.1F S
DSO
IA0 IA1 YA
1 2 3 4 5 6 7 8
16 VCC 15 Z 14 ID0
Vo
100 100
IB0 IB1 YB GND
PI3L100
13 ID1 12 YD 11 IC0 10 IC1 9 YC
100 100
PULSE GENERATOR
Figure 3. Differential Crosstalk Measurement
TRANSMIT 2
TX1
PI3L100
RX1
RECEIVE 2
OFFSET ADJUST
Figure 4a. Full Duplex Transceiver
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PI3L100 3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch
120
TX1
100
Figure 4c. Line Termination
RX1
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
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