PI3B32X384 3.3V, 20-Bit, 2-Port NanoSwitch™ Features Description • • • • Pericom Semiconductor’s PI3B32X384 is a 3.3V, 20-bit 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. 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 5-ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.1µA typical) – Ideally suited for notebook applications • Fast Switching Speed: 4.5ns max. • TTL-compatible control of input levels • Packaging (pb-free & Green available): – 48-pin 150-mil wide plastic BQSOP (B) Block Diagram A0 Pin Configuration B0 SW A4 SW A5 B5 SW B4 A9 A10 SW B10 A14 SW B14 A15 SW B15 A19 SW B19 B9 SW SW A B OE BEA BEB BEC BED Truth Table(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 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 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 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 Pin Name Description Function BEC BED B9-B5 B14-B10 BEx Bus Enable Inputs (Active LOW) Disconnect H H Hi-Z Hi-Z A19-A0 Bus A Connect L H A9-A5 Hi-Z B19-B0 Bus B Connect H L Hi-Z A14-A10 GND Ground Connect L L A9-A5 A14-A10 Vcc Power Note: 1. H = High Voltage Level Hi-Z = High Impedance 06-0312 Pin Description L = Low Voltage level 1 PS8336F 12/04/06 PI3B32X384 3.3V, 20-Bit, 2-Port NanoSwitch™ 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........................................–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 = –40°C to +85°C, VCC = 3.3V ±10%) Parameters Description Test Conditions(1) Min. Typ(2) Max. Units VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 — — V VIL Input LOW Voltage Guaranteed Logic LOW Level -0.5 — 0.8 V IIH Input HIGH Current VCC = Max. VIN = VCC — — ±1 µA IIL Input LOW Current VCC = Max. VIN = GND — — ±1 µA 0 ≤ A, B ≤ VCC — — ±1 µA VCC = Min. IIN = -18mA — — -1.2 V VCC = Min. VIN = 0.0V ION = 15mA — 5 8 IOZH High-Impedance Output Current VIK Clamp Diode Voltage RON Ω Switch ON Resistance(4) VCC = Min. VIN = 2.4V ION = 15mA — 10 17 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 = 25°C 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. Capacitance (TA = 25°C, f = 1 MHz) Parameters Description INput Capacitance CIN A/B Capacitance, Switch Off COFF A/B Capacitance, Switch On CON Test Conditions VIN = 0V VIN = 0V VIN = 0V Typ — — — Max. 3.0 8.0 16.0 Units pF pF pF Notes: 1. This parameter is determined by device characterization but is not production tested. 2. Typical values are at VCC = 3.3V, TA =25°C ambient and maximum loading. 3. Not more than one output should be sorted 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. 06-0312 2 PS8336F 12/04/06 PI3B32X384 3.3V, 20-Bit, 2-Port NanoSwitch™ Power Supply Characteristics Parameters ICC ΔICC Description Test Conditions(1) Quiescent Power VCC = Max, VIN= GND or VCC Supply Current per VCC = Max, VIN = 3.0V(3) Min. — Typ(2) 1.0 — — Max. 5.0 750 Units µA µA Notes: 1. For Max. or Min. conditons, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 3.3V, +25°C 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 represents 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. PI3B32X384 Switching Characteristics over Operating Range Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propogation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BE to Ax or Bx Bus Enable Time BE to Ax or Bx Conditions(2,3) CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω R = 500Ω PI3B32x384 Com. Min. Max. 0.25 1.0 4.0 1.0 3.5 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 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® 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 registered trademark of Nippon Motorola, Ltd. 06-0312 3 PS836FF 12/04/06 PI3B32X384 3.3V, 20-Bit, 2-Port NanoSwitch™ PackagingMechanical: 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 .002 0.05 .009 0.25 5˚ .0157 BSC 0.40 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .079 2.0 Max .0051 .009 0.13 0.23 Ordering Information Ordering Code PI3B32X384B PI3B32X384BE Package Code B B Package Type 48-pin BQSOP Pb-free & Green, 48-pin BQSOP Notes: • Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ • E = Pb-free & Green • Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 06-0312 4 PS8336F 12/04/06