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| Block Diagram A0 B0 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3384 PI3B32384 (25) 3.3V, 10-Bit, 2-Port, NanoSwitchTM Features * * * * * Near-Zero propagation delay Low noise, 25-ohm version (PI3B32384) 5-ohm switches connect inputs to outputs (PI3B3384) Fast Switching Speed - 4.5ns max. Ultra-low quiescent power (0.1A typical) - Ideally suited for notebook applications * Packaging (Pb-free & Green available): - 24-pin 150-mil wide plastic QSOP (Q) - 24-pin 173-mil wide plastic TSSOP (L) Description Pericom Semiconductor's PI3B3384 and PI3B32384 are 3.3 Volt, 10bit, 2-port bus switches designed with a low On-Resistance allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. Switches are turned ON by the Bus Enable (BE) input signal. Two bus enable signals are provided, one for each of the upper and lower five bits of the two 10-bit buses. The PI3B32384 is designed with an internal 25-ohm resistor reducing noise reflection in highspeed applications. Pin Configuration BEA B0 A0 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 Vcc B9 A9 A8 B8 B7 A7 A6 B6 B5 A5 BEB A4 B4 A1 B1 B2 A2 A3 B3 24-Pin Q, L 19 18 17 16 15 14 13 A5 B5 B4 A4 GND A9 B9 A B BEA BEB BE Truth Table(1) Function Disconnect Connect Connect Connect BEA H L H L BEB H H L L B0-B4 Hi-Z A0-A4 Hi-Z A0-A4 B5-B9 Hi-Z Hi-Z A5-A9 A5-A9 Pin Description Pin Name BEA, BEB A0-A9 B0-A9 GND VCC Description Bus Enable Inputs (Active LOW) Bus A Bus B Ground Power Notes: 1. H = High Voltage Level X = Don't Care L = Low Voltage Level Hi-Z =High Impedance 1 PS8161F 09/23/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3384, PI3B32384(25) 3.3V, 10-Bit, 2-Port NanoSwitch 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 .......................................... -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%) Parameters Description VIH VIL IIH IIL IOFF VIK RON Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Off Current Clamp Diode Voltage Switch On Resistance (3) Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = 0, VOUT = 3 TO 3.3V VCC = Min., IIN = -18mA VCC = Min., VIN = 0.0V, ION = 48mA or 64mA VCC = Min., VIN = 2.4V, ION = 15mA PI3B3384 PI3B32384 PI3B3384 PI3B32384 Min. 2.0 -0.5 -- -- -- -- 18 -- 18 Typ(2) -- -- -- -- -- -- 5 28 10 35 Max. -- 0.8 1 1 10 -1.2 8 40 17 50 Units V V A A A V Capacitance (TA = 25C, f = 1 MHz) Parameters(4) CIN COFF CON Description Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V VIN = 0V Typ. 3.0 8.0 16.0 Units pF pF 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. 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. 2 PS8161F 09/23/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3384, PI3B32384(25) 3.3V, 10-Bit, 2-Port NanoSwitch Power Supply Characteristics Parameters Description ICC ICC Quiescent Power Supply Current Supply Current per Input @ TTL HIGH 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 (control inputs only); A and B pins do not contribute to ICC. Test Conditions(1) VCC = Max., VIN = GND or VCC VCC = Max., VIN = 3.0V(3) PI3B3384 PI3B32384 Min. -- -- Typ(2) 0.1 -- Max. 3 750 Units A A PI3B3384 Switching Characteristics Over Operating Range PI3B3384 Parame te rs De s cription Conditions (3) M in. tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BEx to Ax or Bx Bus Disable Time BEx to Ax or Bx C L = 50pF RL = 500 C L = 50pF RL = 500 RL = 500 1.0 1.0 Com. M a x. 0.25 4.0 3.5 ns Units 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. PI3B32384 Switching Characteristics over Operating Range PI3B32384 Com. Min. Max. 0.25 1.0 1.0 4.0 4.5 ns Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BEX to Ax or Bx Bus Disable Time BEx to Ax or Bx Conditions(1) CL = 50pF RL = 500 CL = 50pF, RL = 500, RL = 500 Units 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. 3 PS8161F 09/23/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3384, PI3B32384(25) 3.3V, 10-Bit, 2-Port NanoSwitch Packaging Mechanical: 24-pin QSOP (Q) 24 .008 0.20 MIN. .008 .013 0.20 0.33 Guage Plane .150 .157 3.81 3.99 .010 0.254 1 .337 .344 8.56 8.74 Detail A .016 .035 0.41 0.89 .041 1.04 REF 0-6 .033 0.84 .053 .069 1.35 1.75 .015 x 45 0.38 Detail A .007 .010 SEATING PLANE .004 0.101 .010 0.254 .016 .050 0.406 1.27 .228 .244 5.79 6.20 0.178 0.254 .025 typical 0.635 .008 0.203 .012 0.305 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Packaging Mechanical: 24-pin TSSOP (L) 24 .169 .177 4.3 4.5 .004 .008 0.09 0.20 1 .303 .311 7.7 7.9 0.45 0.75 .047 1.20 Max .018 .030 SEATING PLANE .252 BSC 6.4 .0256 BSC 0.65 .007 .012 0.19 0.30 .002 .006 0.05 0.15 X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS 4 PS8161F 09/23/04 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3384, PI3B32384(25) 3.3V, 10-Bit, 2-Port NanoSwitch 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(R) minimizes power consumption. Power-Supply Sequencing and Hot-Plug Information Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to input/output or control pins. Rail-to-Rail is a registeredtrademark of Nippon Motorola, Ltd. Ordering Information Ordering Code PI3B3384Q PI3B3384QE PI3B3384L PI3B3384LE PI3B32384Q PI3B32384QE PI3B32384L PI3B32384LE Package Code Q Q L L Q Q L L Package Type 24-pin QSOP Pb-free & Green, 24-pin QSOP 24-pin TSSOP Pb-free & Green, 24-pin TSSOP 24-pin QSOP Pb-free & Green, 24-pin QSOP 24-pin TSSOP Pb-free & Green, 24-pin TSSOP Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com 5 PS8161F 09/23/04 |
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