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PI5L102
CompactPCI(R) Hot Swap Pull-up Switch
Product Features Supports CompactPCI precharge voltage selection 3.3V/2.7kohms, 5V/1ohm line termination selection Ultra-low quiescent current: 0.1A typical Low ON resistance: 7ohms maximum Single supply operation up to 6.2V 5% Wide bandwidth data rates: >200 Mbps Compact 20-pin TSSOP package Mechanical relay replacement
Product Description
The PI5L102L CompactPCI Hot Swap Pull-up switch is a Quad 1:2 multiplexer. It is designed to switch the 1V precharge bias voltage and 10-kohm pull-up resistor connected to the CompactPCI bus signals during Hot Swap. Each switch can connect eight inputs (IAn to IDn) to a given pull-up voltage level. In addition, the PI5L102 can be used to select 2.7 kohms/3.3V or 1.0 kohm/5V pull-ups for the system card PCI signal lines. ON resistance is a low 7 ohms maximum and all eight switches are selected or disabled with a single CMOS/TTL compatible signal. For general-purpose applications, the PI5L102 can replace mechanical relays. In network systems, physical layer signals can be switched. To reduce the insertion loss, the PI5L102 can be powered by a 6.2V Zener diode.
Logic Block Diagram
IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1
Pin Configuration
NC NC IA0
1 2 3 4 5 6 7 8 9 10
20-Pin L
20 19 18 17 16 15 14 13 12 11
NC VCC E ID0 ID1 YD IC0 IC1 YC NC
E
IA1 YA IB0 IB1 YB
YA
YB
YC
YD
GND NC
Truth Table(1)
E H L YA Hi- Z YB Hi- Z YC Hi- Z YD Hi- Z ID0, ID1 Function Disable Enable
Product Pin Description
Pin Name IAn-IDn E YA-YD GND VCC Description Data Inputs Enable Data Outputs Ground Power
IA0, IA1 IB0, IB1 IC0, IC1
Note: 1. H = High Voltage Level L = Low Voltage Level
CompactPCI is a registered trademark of the PCI Industrial Computer Manufacturers Group
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PI5L102 CompactPCI Hot Swap Pull-Up Switch
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 +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ... 0.5V to +7.0V DC Input Voltage .................................................................... 0.5V to +7.0V 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 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 = 6.2V, +5%, 2%)
Parameters Description VIH VIL IIH IIL IOZH VIK IOS VH RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Short Circuit Current(3) Input Hysteresis at Control Pins Switch On Resistance(4) VCC = Min.,VIN = 0.0V ION = 48mA VCC = Min.,VIN = 2.4V ION = 15mA Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 A, B VCC VCC = Min., IIN = 18mA A (B) = 0V, B (A) = VCC Min. 2.4 0.5 100 Typ(2) 0.7 150 5 10 Max. 0.8 1 1 1 1.2 7 15 Units V V A A A V mA m V ohm
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 6.2V, 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. Measured by voltage drop between I and Y pins at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (I,Y) pins.
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Switching Characteristics over Operating Range
PI5L102 Com. Min. Typ Max. 0.5 0.5 6.0 5.8
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PI5L102 CompactPCI Hot Swap Pull-Up Switch
Capacitance (TA = 25C, f = 1 MHz)
Parame te rs (1 ) CIN C O F F ( Y x) CO F F (I XN) C O N ( Y x) ( 1 , 2 ) D e s cription Input Capacitance YX Capacitance, Switch O FF IX N Capacitance, Switch O FF YX Capacitance, Switch O N VIN = 0V Te s t Conditions Typ. 4 6 6 24 M ax. 6 8 8 32 pF Units
Note: 1. This parameter is determined by device characterization, but not production tested. 2. Switch ON Capacitance accounts for capacitance of both switch channels (IX0 & IX1) ON at one time. 3. X = A, B, C, or D; N = 0 or 1
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 2.5 0.25 Units A mA 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 = 6.2V, TA = 25C ambient temperature. 3. Per TTL driven input (VIN = 3.4V, 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.
Parameters tPHZ tPLZ tPZH tPZL
Description Bus Disable Time E to Y Bus Enable Time E to Y
Conditions(1) CL = 50pF RL = 500ohm
Units ns ns
Notes: 1. See test circuit and waveforms (Figure 2).
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Logic Inputs
The logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a +5.0V supply, E may be driven low to 0V and high to 5.5V. Driving E Rail-to-Rail(R) minimizes power consumption.
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying signals to the input/ output or control pins.
5V VIO
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PI5L102 CompactPCI Hot Swap Pull-Up Switch
Applications
VCC Bias Voltage vs RON
To keep RON to a minimum, it is recommended that the VCC voltage be increased to a voltage between +6.0V and +6.5V (see Figure 5). The RON vs VIN curve shows the effect of ON-resistance and input voltage which is exponential. Ideally an input voltage between 0.2V and 3.6V will keep RON in the flat part of the curve (RON or flatness is ~2ohm).
VIO 3V
PI5AL102
Enable 5V
PI5AL102
Enable 3.3V From cPCI Connector
1 k
2.7 k
10
Pullup Required on Each cPCI Line
Pericom PCI Bridge PI7C7100
Figure 1. VIO Voltage Selection
1.0V Precharge
10
PI5L102
Backplane
HOT SWAP Connections
10k Resistors
10
E
Figure 2. Hot Swap Precharge Voltage Selection
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Test Circuits and Waveforms
6V
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PI5L102 CompactPCI Hot Swap Pull-Up Switch
Enable and Disable Timing
Enable Control Input tPZL Output Normally Low Output Normally High 3V Switch tPZH Switch GND 1.5V 0V 0V 1.5V 0.3V tPHZ 0.3V VOH VOL tPLZ 3V Disable 3V 1.5V 0V
Test Circuits
VCC open
500 Pulse Generator VIN D.U.T. 50pF RT CL 500 VOUT
Switch Position
Te s t
Disabled LO W Enabled LO W
Switch
Closed
1. Input Control Enable = Low and Input Control Disable = High 2. Pulse Generator for All Pulses: Rate - <1.0MHz; ZOUT <50 tF, tR <2.5 ns.
DEFINITIONS: C L = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator
Figure 3. Switching Time
+V 1mA R
120
100
VCC 6.2V ZENER PI5L102
Figure 4. Line Termination
Figure 5. VCC Bias Current
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PI5L102 CompactPCI Hot Swap Pull-Up Switch
RON 20.00 E+00
VIN = 4.5000V, RON = 14.3E+00, VON = 3.9569V
VON 6.000
2.000/Div. VON 75C
25C
0.6000/Div. 75C
25C
RON
0.000 0.000 VIN 0.600V/Div.
0.000 6.000
Figure 6. RON vs Input Voltage over Temperature (RON at Vcc = 6.1V @ 75C)
RON 20.00 E+00
VIN = 4.5000V, RON = 10.9E+00, VON = 4.0720V
VON 6.000
2.000/Div. VON
0.6000/Div.
RON
0.000 0.000 VIN 0.600V/Div.
0.000 6.000
Figure 7 RON vs Input Voltage (RON at VCC = 6.2V @ 25C)
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PI5L102 CompactPCI Hot Swap Pull-Up Switch
20-Pin TSSOP Package Drawing (L)
20
.169 .177
4.3 4.5
1 .252 .260 6.4 6.6 .004 0.09 .008 0.20 .047 1.20 Max 0.45 0.75 .018 .030
SEATING PLANE
.238 .269 6.1 6.7
.0256 BSC 0.65
.007 .012 0.19 0.30
.002 0.05 .006 0.15
X.XX X.XX
DENOTES CONTROLLING DIMENSIONS IN MILLIMETERS
Ordering Information
Part PI5L102L Pin-Package 20 - TSSO P(L) Te mpe rature 0C to +70C
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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