PI5C32X384/32X384C 20-Bit, 2-Port Bus Switch Features Description • • • • Pericom Semiconductor’s PI5C32X384 and PI5C32X384C are 20-bit 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. The switches are turned ON by the Bus Enable (BE) input signal. Four bus enable signals are provided, one for each of the upper and lower five bits of the two 10-bit buses. Near-Zero propagation delay 5Ω switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power 32X384 (0.2µA typical) – Ideally suited for notebook applications • Packaging (Pb-free & Green Available): – 48-pin 150-mil wide plastic BQSOP (B) – 48-pin 240-mil wide plastic TSSOP (A) Pin Configuration Block Diagram A0 B0 A4 B4 A15 B15 A19 B19 A5 B5 A9 B9 A10 B10 A14 B14 BEA BEB BEC BED Pin Description Pin Name Description BEX Bus Enable Inputs (Active LOW) A19-A0 Bus A B19-B0 Bus B GND Ground VCC Power 1 BEA B0 A0 A1 B1 B2 A2 A3 B3 B4 A4 GND BEC B5 A5 A6 B6 B7 A7 A8 B8 B9 A9 GND 1 48 2 47 3 46 4 45 5 44 6 43 7 42 8 41 9 40 10 39 11 38 12 37 13 36 14 35 15 34 16 33 17 32 18 31 19 30 20 29 21 28 22 27 23 26 24 25 VCC B19 A19 A18 B18 B17 A17 A16 B16 B15 A15 BEB VCC B14 A14 A13 B13 B12 A12 A11 B11 B10 A10 BED PS7027F 09/09/04 PI5C32X384/PI5C32X384C 20-Bit, 2-Port Bus Switch Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature .............................................................–65°C to +150°C Ambient Temperature with Power Applied ............................–40°C to +85°C Supply Voltage to Ground Potential (Inputs & Vcc Only) ......–0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ...–0.5V to +7.0V DC Input Voltage .....................................................................–0.5V to +7.0V DC Output Current................................................................................ 120mA 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. Power Dissipation .................................................................................... 0.5W Truth Table(1) Function BEA BEB B4-B0 B19-B15 Disconnect H H Hi-Z Hi-Z Connect L H A4-A0 Hi-Z Connect H L Hi-Z A19-A15 Connect L L A4-A0 A19-A15 Function BEC BED B9-B5 B14-B10 Disconnect H H Hi-Z Hi-Z Connect L H A9-A5 Hi-Z Connect H L Hi-Z A14-A10 Connect L L A9-A5 A14-A10 Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±5%) Parameters Description Test Condidtions(1) Min. Typ.(2) Max. VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 - - VIL Input LOW Voltage Guaranteed Logic LOW Level - - 0.8 IIH Input HIGH Current VCC = Max., VIN = VCC - - ±1 IIL Input LOW Current VCC = Max., VIN = GND - - ±1 IOZH High Impedance Output Current 0 ≤ (A, B) (C, D) ≤ VCC - - ±1 IOS Short Circut A,B (C, D) = 0V, C, D (A, B) = VCC - 300 - VH Input Hysteresis at Control Pins VCC = Min., VIN = 0.0V, ION = 48mA - 5 7 RON Switch VCC = Min., VIN = 2.4V, ION = 15mA - 10 15 Current(3) On-Resistance(4) 2 PS7027F Units V mA mV Ω 09/09/04 PI5C32X384/PI5C32X384C 20-Bit, 2-Port Bus Switch Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Descritption Test Condidtions CIN Input Capacitance COFF CON Type Max. VIN = 0V - 6 A/B Capacitance, Switch OFF VIN = 0V - 6 A/B Capacitance, Switch On VIN = 0V - 8 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 = 5.0V, TA = 25°C 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 AB and CD pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A or B, C or D) pins. 5. This parameter is determined by device characterization but is not production tested. Power Supply Characteristics Parameters Description Test Condidtions(1) Typ.(2) Max. Units 60 0.1 200 3.0 µA ICC Quiescent Power Supply Current VCC = Max. ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. 2.5 mA Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open BE1 or BE2 = GND Control Input Toggling 50% Duty Cycle 0.25 mA/ MHz ICCD VIN = GND PI5C32X384C or VCC PI5C32X384 Min. Notes: 1. For Max. or Min. conditons, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 5.0V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V, 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. 3 PS7027F 09/09/04 PI5C32X384/PI5C32X384C 20-Bit, 2-Port Bus Switch Switching Characteristics over Operating Range Conditions(1) Parameters Description tPLH tPHL Propagation Delay(2,3) Ax to Bx, Bx to Ax tPZH tPZL Bus Enable Time BEx to Ax or Bx tPHZ tPLZ Bus Disable Time BEx to Ax or Bx CL = 50 pF, RL = 500Ω PI5C32X384/PI5C32X384C Min. Typ. Max. - 0.25 - 1.5 - 6.5 1.5 - 5.5 Units 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 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. Package Mechanical: 48-pin TSSOP (A) 48 .236 .244 1 6.0 6.2 .488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE .004 0.09 .008 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 .002 .006 0.05 0.15 .007 .010 0.17 0.27 4 0.45 .018 0.75 .030 .319 BSC 8.1 PS7027F 09/09/04 PI5C32X384/PI5C32X384C 20-Bit, 2-Port Bus Switch Package Mechanical: 48-pin BQSOP (B) 48 .150 .157 3.80 4.00 .228 .244 5.80 6.20 Gauge Plane .020 .029 0.50 0.75 .010 0.25 BSC 1 .014 0.356 REF .386 .394 9.80 10.00 .015 0.381 x 45˚ .008 0.20 Nom Nom .063 1.60 .0157 BSC 0.40 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .002 0.05 .009 0.25 5˚ .0051 .009 0.13 0.23 .079 2.0 Max Ordering Information Ordering Code Package Code Package Description PI5C32X384B B 48-pin 150-mil wide plastic BQSOP PI5C32X384BE B Pb-free & Green, 48-pin 150-mil wide plastic BQSOP PI5C32X384A A 48-pin 240-mil wide plastic TSSOP PI5C32X384AE A Pb-free & Green, 48-pin 240-mil wide plastic TSSOP PI5C32X384CA A 48-pin 240-mil wide plastic TSSOP PI5C32X384CAE A Pb-free & Green, 48-pin 240-mil wide plastic TSSOP PI5C32X384CB B 48-pin 150-mil wide plastic BQSOP PI5C32X384CBE B Pb-free & Green, 48-pin 150-mil wide plastic BQSOP 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 PS7027F 09/09/04