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PI3B32160
3.3V, Low Capacitance 16-Bit to 32-Bit, Demux PCI Hot Plug Bus Switch with Precharged Outputs for Live Insertion
Product Features
RON is 5 typical Pullup on B1 and B2 ports Low Power: 50W typical Industrial Operation Temperature: 40C to +85C Near Zero propagation delay Switching speed: 4.5ns max. Channel on capacitance: 14pF max. VCC Operating Range: 3V to +3.6V Package available: 56-pin TSSOP (A)
Product Description
Pericom Semiconductors PI3B series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance. The PI3B32160 is a 16-bit to 32-bit demultiplexer bus switch. Industry leading advantages include a propagation delay of 250ps, resulting from 5 channel resistance and low I/O capacitance. A port demultiplexes to either 1B and 2B or to both. The switch is bidirectional.
Application
Provides PCI Hot Plugging
Logic Inputs
The logic cotrol 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.
1B1
Logic Block Diagram
VBIAS1 1A VBIAS2 1B2
Power-Supply Sequencing and OvervoltageProtection Caution: Do not exceed the absolute maximum ratings because
stresses beyond the listed ratings may cause permanent damage to the device. Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying VBIAS and signals to the input/output pins.
VBIAS1 16A VBIAS2
Pin Description
16B1
1B1 1 2B1 2 2A 3 3B1 4 4B1 5 4A 6 5B1 7 6B1 8 6A 9 7B1 10 8B1 11 8A 12 GND 13 VCC 14 9B1 15 10B1 16 10A 17 11B1 18 12B1 19 12A 20 13B1 21 14B1 22 14A 23 15B1 24 16B1 25 16A 26 VBIAS1 27 SEL1 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 1A 1B2 2B2 3A 3B2 4B2 5A 5B2 6B2 7A 7B2 8B2 GND VCC 9A 9B2 10B2 11A 11B2 12B2 13A 13B2 14B2 15A 15B2 16B2 VBIAS2 SEL2
16B2 SEL1 SEL2
56-Pin A
Function nA to nB1 nA to nB2 nA to nB1 and nB2 nB1, nB2 = VBIAS
SEL1 L H L H
SEL2 H L L H
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PS8420C
05/04/00
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B32160 3.3V, Low Capacitance 16-Bit to 32-Bit, Demux PCI Hot Plug Bus Switch with Precharged Outputs for Live Insertion
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 ........................... 40C to +85C Supply Voltage to Ground Potential (Inputs & VCC Only) ... 0.3V 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 .............................................................................. 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 = 40C to +85C, VCC = 3.3V 10%, VBIAS = 1.3V to VCC)
Parameters Description VIH VIL IIH IIL IOZH VIK RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Clamp Diode Voltage Switch On Resistance(4) Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., IIN = 18mA VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA Min. 2.0 0.5 Typ.(2) 0.9 5 9 Max. 0.8 1 1 +1 1.8 7 15 V A Units V
High Impedance Output Current A = 0V or VCC max., VBIAS1 = VBIAS2 = VCC max.
Capacitance (TA = 25C, f = 1 MHz)
Parameters(5) CIN COFF COFF CON Description Input Capacitance A Capacitance, Switch Off B Capacitance, Switch Off A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V VIN = 0V VIN = 0V Typ. 2.6 8.0 4.2 11 Max. 3.2 9.5 4.7 14 Units pF
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 = 3.3V, TA= 25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. Measured by the voltage drop between A and B pins at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (A & B) pins. 5. This parameter is determined by device characterization but is not production tested.
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PS8420C
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B32160 3.3V, Low Capacitance 16-Bit to 32-Bit, Demux PCI Hot Plug Bus Switch with Precharged Outputs for Live Insertion
Power Supply Characteristics
Parame te rs ICC ICC De s cription Quiescent Power Supply Current Supply Current per Input @TTL HIGH Supply Current per Input per MHz VCC = Max. VCC = Max. VCC = Max., A and B Pins Open Control Input Toggling 50% Duty Cycle Te s t Conditions (1) VIN = GND or VCC VIN = 3.0V(3) other pin = VCC or GND M in. Typ.(2) M ax. 20 2.5 Units A mA
ICCD
0.25
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. 5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.
Switching Characteristics over Operating Range
Parameters Description Delay(2,3) Conditions(1) Min. PI3B32160 Com. Typ. Max. Units
t PLH Propagation CL= 50pF 0.25 tPHL A to B RL= 500 t PZH Bus Enable Time 1.3 4.5 ns t PZL SEL to A,B t PHZ Bus Disable Time 1.3 4.5 tPLZ SEL to A,B 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.
Pericom Semiconductor Corporation PS8420C 3 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
05/04/00
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B32160 3.3V, Low Capacitance 16-Bit to 32-Bit, Demux PCI Hot Plug Bus Switch with Precharged Outputs for Live Insertion
56-Pin TSSOP (A) Package
56
.236 .244
6.0 6.2
1
.547 .555
13.9 14.1 1.20 .047 Max. SEATING PLANE
.004 0.09 .008 0.20 0.45 .018 0.75 .030 .319 BSC 8.1
.0197 BSC 0.50
.007 .011 0.17 0.27
.002 .006 0.05 0.15
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Ordering Information
Part PI3B32160A Pin - Package 56- TSSOP (A56) Width 240- mil Te mpe rature 40C to +85C
Logic Inputs
Applications Information
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(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 BIAS voltage pin and the input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
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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PS8420C 05/04/00

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