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| 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion 32-Bit, 2-Port, Bus Switch Product Features Near zero propagation delay 5 switches connect inputs to outputs 2.5V Supply Voltage Operation Permits Hot Insertion 5V I/O Tolerant High Bandwidth Operation (>400 MHz) Packages available: 80-pin 150 mil wide plastic BQSOP (B) Product Description Pericom Semiconductors PI3C series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance. The PI3C34X245 is a 2.5V or 3.3V, 32-bit, 2-port bus switch designed with a low ON resistance (5) 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. It is very useful in switching signals that have high bandwidth (>400 MHz). Logic Block Diagram ) * Product Pin Configuration NC A0 A1 A2 A3 A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 80-Pin 65 B 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 VCC BE1 B0 B1 B2 B3 B4 B5 B6 B7 VCC BE2 B8 B9 B10 B11 B12 B13 B14 B15 VCC BE3 B16 B17 B18 B19 B20 B21 B22 B23 VCC BE4 B24 B25 B26 B27 B28 B29 B30 B31 )% *% *- )& *& NC A8 A9 A10 A11 A12 A13 A14 A15 GND NC A16 A17 A18 A19 )# *# *)$ *$ A20 A21 A22 A23 )! *! GND NC A24 A25 A26 A27 *-! )" *" A28 A29 A30 A31 GND )! *! Product Pin Description Pin Name BEn A0 A31 B0 B31 1 *-" Description Bus Enable Input (Active LOW) Bus A Bus B PS8429B 12/10/99 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus 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 ......................... 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 +5.5V 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 Operating Range, TA = -40C to +85C, VCC = 3.3V 10%) 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 (3) 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) Max. 0.8 1 1 1 Units V A V High Impedance Output Current 0 A, B VCC -0.73 5 8 -1.2 7 15 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. 3.5 5.0 10.0 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. 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 PS8429B 12/10/99 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus Switch Power Supply Characteristics Parameters Description ICC ICC Quiescent Power Supply Current Supply Current per Input HIGH Test Conditions(1) VCC = Max. VCC = Max. VIN = GND or VCC VIN = 3.0V(3) Min. Typ.(2) Max. 1.0 2.0 mA 2.5 Units 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 driven input (control input only); A and B pins do not contribute to ICC. Switching Characteristics over 3.3V Operating Range P13C34X245 Parame te rs De s cription Conditions M in. tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay (2,3) Ax to Bx Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx CL = 50pF RL = 500 CL = 50pF RL = 500 R = 500 1.5 1.5 Com. M ax. 0.25 6.5 5.5 ns Units Switching Characteristics over 2.5V Operating Range P13C34X245 Parame te rs De s cription Conditions M in. tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay Ax to Bx Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx (2,3) Com. M ax. 0.25 1.5 1.5 9.8 8.3 Units CL = 50pF RL = 500 CL = 50pF RL = 500 R = 500 ns 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 timesof 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 PS8429B 12/10/99 VOUT, (V) 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus Switch 4.0 VCC = 3.3V 3.1V 2.9V 2.7V 2.5V 2.3V 3.8V 3.6V 3.4V 3.2V 3.0V 2.8V 2.0 0.0 0.0 1.0 2.0 VIN, (V) 3.0 4.0 5.0 Output Voltage vs. Input Voltage over Various Supply Voltages Ordering Information Part PI3C34X245B Pin - Package 80 - BQ SO P (B) D ime ns ions 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 4 PS8429B 12/10/99 |
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