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| Truth Table Function nA1 to nB1 nA1 to nB2 S0 L H 1 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C16225 3.3V, High Bandwidth, Low Capacitance 12-Bit to 24-Bit Mux/Demux Bus Switch (16292 Pinout) Product Features RON is 9 Ohm typical Pulldown on B ports Near-Zero Propagation Delay Industrial Operation Temperature 40C to +85C Switching speed: 4.5ns max (for 3.3V operation) Channel ON capacitance: 9pF typ. VCC Operating Range: +2V to +3.6V >100 MHz bandwidth Packages Available: 56-pin TSSOP (A) Product Description Pericom Semiconductors PI3C series of bus switch circuits are produced using the Companys advanced submicron CMOS technology, achieving industry performance. The PI3C16225 is a 12-bit to 24-bit, multiplexer/demultiplexer bus switch that provides industry leading advantages such as almost zero propagation delay of 500ps owing to 9ohm channel resistance and low I/O capacitance. A1 port demultiplexes to either B1 or B2 port and the switch is bidirectional. Applications Provides Memory Module Switching Logic Block Diagram ) * Product Pin Configuration S0 1 A1 ! " # $ % & ' ! " # $ % & ' ! " # $ % & NC 2 A1 * NC 3 A1 ) * * 5 NC GND 4 A1 NC 5 A1 NC 6A1 NC 7A1 NC VCC 8A1 GND NC 9A1 NC 10A1 NC 11A1 NC 12A1 NC 56-Pin A #$ ## #" #! # # # "' "& "% "$ "# "" "! " " " !' !& !% !$ !# !" !! ! ! ! ' NC NC 1B1 1B2 2B1 2B2 3 B1 GND 3B2 4B1 4B2 5B1 5B2 6B1 6B2 7B1 7B2 8B1 GND 8B2 9 B1 9B2 10B1 10B2 11B1 11B2 12B1 12B2 PS8458D 03/13/01 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C16225 3.3V, High Bandwidth, Low Capacitance 12-Bit to 24-Bit Mux/Demux Bus Switch (16292 Pinout) 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 I/O 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 the Operating Range, TA = 40C to +85C, VCC = 3.3V 10%) Parame te rs VIH VIL IIH IIL IO VIK De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current B- port Pulldown Current Clamp diode Voltage Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., VO = VCC SEL = High for B1 SEL = Low for B2 VCC = Min., IIN = 18mA VCC = Min.,VIN = 0.0V ION = 48mA or 64mA VCC = Min.,VIN = 2.4V ION = 15mA M in. 2.0 0.5 2.5 Typ.(2) 3.8 0.73 9 16 M ax. 0.8 1 1 1.2 12 23 Units V A mA V RON Switch On Resistance(4) Capacitance (TA = 25C f = 1 MHz) Parame te rs (5) CIN CON D e s cription Input Capacitance A/B Capacitance, Switch O n Te s t Conditions VIN = 0V Typ. 3.5 9.3 M ax. 11 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 pin 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. 2 PS8458D 03/13/01 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C16225 3.3V, High Bandwidth, Low Capacitance 12-Bit to 24-Bit Mux/Demux Bus Switch (16292 Pinout) Power Supply Characteristics Parame te rs ICC ICC D e s cription Q uiescent Power Supply Current Supply Current per Input @ TTL HIGH Te s t Conditions (1) VCC = Max., VIN = GND or VCC VCC = Max., VIN = M in. Typ.(2) 260 M ax. Units 850 750 A 3.0V(3) 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. 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. PI3C16225 Switching Characteristics Over Operating Range Com. Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Propogation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time S0 to Ax or Bx Bus Disable Time S0 to Ax or Bx Conditions (1) CL = 25pF RL = 500 CL = 25pF RL = 500 R = 500 M in. 1.3 1.5 M ax. 0.5 6.5 5.5 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 0.5ns for 25pF 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 PS8458D 03/13/01 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 PI3C16225 3.3V, High Bandwidth, Low Capacitance 12-Bit to 24-Bit Mux/Demux Bus Switch (16292 Pinout) 56-Pin TSSOP (A) Package 56 .236 6.0 .244 6.2 1 .547 13.9 .555 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 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .007 .011 0.17 0.27 .002 .006 0.05 0.15 Ordering Information Part PI3C16225A Pin - Package 56 - TSSOP (A) Width 240- mil Te mpe rature 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 PS8458D 03/13/01 |
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