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| Product Features Near zero propagation delay 20 Ohm switches connect inputs to outputs Fast Switching Speed - 3.8ns (max.) Packages available: 24-pin 150 mil wide plastic QSOP (Q) 24-pin 173 mil wide plastic TSSOP (L) 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3863 3.3V, 10-Bit, 2-Port BusSwitch with SSTL-2 Enable Product Description Pericoms Semiconductors PI3B series of logic circuits are produced using the Companys advanced sub micron CMOS technology, achieving industry leading performance. The PI3B3863 is a 10-bit, 3.3 volt two-port bus switch 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. The switches are turned ON by the Bus Enable (BE) input signal, which is SSTL-2 compatible. Logic Block Diagram Product Pin Configuration 24-Pin Q, L Truth Table(1) Function Disconnect Connect Note: BE H L A0-9 Hi-Z B0-9 Product Pin Description Pin Name BE A09 B09 GND VCC VREF Description Bus Enable Input (Active LOW) Bus A Bus B Ground Power Input Reference 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance 1 PS8167D 01/05/00 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3863 3.3V, 10-Bit, 2-Port BusSwitch with SSTL-2 Enable 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) ........ 0.5V 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 ................................................................................. 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 = 3.3V 5%) Parameters Description VIH VIL VREF IIH IIL IOZH VIK RON Input HIGH Voltage (BE) Input LOW Voltage (BE) Input Reference Voltage Input HIGH Current Input LOW Current VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., IIN = -18mA VCC = Min., VIN = 0.8V, ION = 20mA & VIN = 1.6V, ION = 15mA 17 25 Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level Min. VREF+0.18 -0.3 1.15 1.25 Typ.(2) Max. 3 Units V VREF - 0.18 V 1.35 1 100 250 -1.2 36 V A A A V High Impedance Output Current 0 A, B VCC Clamp Diode Voltage Switch On Resistance(3) Capacitance (TA = 25C, f = 1 MHz) Parameters(4) CIN COFF CON (A/B) Description Input Capacitance A Capacitance, Switch Off A/B Capacitance, Switch On Test Conditions VIN = 0V VIN = 0V VIN = 0V Typ. 4.5 3.5 9.5 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 PS8167D 01/05/00 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3B3863 3.3V, 10-Bit, 2-Port BusSwitch with SSTL-2 Enable Power Supply Characteristics Parameters Description ICC ICC Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Test Conditions(1) VCC = Max. VCC = Max. VIN = GND or VCC VIN = 3.0V(3) Min. Typ.(2) 1.8 1.9 Max. 2.5 2.5 Units mA mA 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 input only); A and B pins do not contribute to ICC. Switching Characteristics over Operating Range PI3B3863 Parame te rs De s cription Conditions (2,3) Com. M in. tPLH tPHL tPZH tPZL Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BE to Ax or Bx CL = 50pF, RL = 500 CL = 20pF, RL = 500, R = 500, CL = 50pF, RL = 500, R = 500, CL = 20pF, RL = 500, R = 500, CL = 50pF, RL = 500, R = 500, M ax. 1 1 1 1 1 3 3.5 3.2 3.8 ns Units tPHZ tPLZ Bus Disable Time BE to Ax or Bx 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. Ordering Information Part PI3B3863Q PI3B3863L Pin-Package 24 - QSOP(Q ) 24 - TSSOP(L) Te mpe rature 40C to +85C 40C to +85C Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com 3 PS8167D 01/05/00 |
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