PI3B3245 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, Hot Insertion 8-Bit, 2-Port, NanoSwitch™ Features Description • • • • Near-Zero propagation delay 5-ohm switches connect inputs to outputs Fast Switching Speed - 4.5ns max. Ultra Low Quiescent Power (0.2µA Typical) – Ideally suited for notebook applications • TTL-compatible control of inputs levels • Packaging (Pb-free & Green available): – 20-pin QSOP (Q) – 20-pin TSSOP (L) – 20-pin SOIC (S) Pericom Semiconductor’s PI3B3245 is a 3.3V 8-bit, 2-port bus switch designed with a low On-Resistance (5-ohm) 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. Block Diagram Pin Configuration A0 SW B0 A7 SW B7 SW BE A NC 1 20 VCC A0 A1 A2 2 3 4 19 18 17 BE B0 B1 A3 A4 A5 5 6 7 16 15 14 B2 B3 B4 8 9 10 13 12 11 B5 B6 B7 A6 A7 GND B BE Truth Table(1) Function Disconnect Connect Pin Description BE H L A0–7 Hi-Z B0–7 Pin Name BE A0–7 B0–7 GND VCC Notes: H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance 1 Description Bus Enable Input (Active LOW) Bus A Bus B Ground Power PS8162F 09/23/04 PI3B3245 3.3V, Hot Insertion 8-Bit, 2-Port, NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 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%) Test Conditions(1) Parameters Description Min. Typ(2) VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level –0.5 IIH Input HIGH Current IIL Input LOW Current IOZH High Impedance Output Current 0 ≤ IN, YN ≤ VCC VIK Clamp Diode Voltage VCC = Min., IIN = –18mA RON Switch On Resistance(3) VCC = Min., VIN = 0.0V, ION = 48mA or 64mA VCC = Min., VIN = 2.4V,ION = 15mA Max. Units V 0.8 V VCC = Max., VIN = VCC ±1 µA VCC = Max., VIN = GND ±1 µA ±1 µA –1.2 V 8 17 Ω 5 10 Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) Description Test Conditions Typ. Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V 3.0 8.0 pF pF CON A/B Capacitance, Switch On VIN = 0V 16.0 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 = 25°C ambient and maximum loading. 3. Measured by the voltage drop betweenAand 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 PS8162F 09/23/04 PI3B3245 3.3V, Hot Insertion 8-Bit, 2-Port, NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description Min. ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ∆ICC Supply Current per Input HIGH VCC = Max. VIN = 3.0V(3) Typ(2) Max. Units 0.1 3.0 µA 750 µA 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, +25°C ambient. 3. Per TTL driven input (control input only); A and B pins do not contribute to ICC. Switching Characteristics over Operating Range Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BE to Ax or Bx Bus Disable Time BE to Ax or Bx Conditions(1) CL = 50pF RL = 500Ω CL = 50pF, RL = 500Ω, RL = 500Ω PI3B3245 Com. Min. Max. Units 0.25 ns 1.0 4.0 ns 1.0 4.5 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. Applications Information Logic Inputs The logic control inputs can be driven up to +3.6 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 registeredtrademark of Nippon Motorola, Ltd 3 PS8162F 09/23/04 PI3B3245 3.3V, Hot Insertion 8-Bit, 2-Port, NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 20-Pin QSOP (Q) 20 .008 0.20 MIN. .150 .157 .008 .013 0.20 0.33 3.81 3.99 Guage Plane .010 0.254 1 Detail A .337 8.56 .344 8.74 0˚-6˚ .016 .035 0.41 0.89 .041 1.04 REF .058 REF 1.47 .015 x 45˚ 0.38 .053 1.35 .069 1.75 Detail A .007 .010 SEATING PLANE .016 .050 .004 0.101 .010 0.254 .025 BSC 0.635 0.178 0.254 0.41 1.27 .228 .244 5.79 6.19 .008 0.203 .012 0.305 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Packaging Mechanical: 20-Pin TSSOP (L) 20 .169 .177 4.3 4.5 1 .252 .260 6.4 6.6 .0256 BSC 0.65 .004 0.09 .008 0.20 .047 1.20 Max .007 .012 0.19 0.30 0.45 0.75 SEATING PLANE .018 .030 .238 .269 6.1 6.7 .002 0.05 .006 0.15 X.XX X.XX 4 DENOTES CONTROLLING DIMENSIONS IN MILLIMETERS PS8162F 09/23/04 PI3B3245 3.3V, Hot Insertion 8-Bit, 2-Port, NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 20-Pin SOIC(S) 20 .197 .220 5.00 5.60 1 .004 .009 .272 .295 6.90 7.50 0.55 .022 0.95 .037 .078 2.00 Max SEATING PLANE .0256 BSC 0.65 .0098 Max. 0.25 0.09 0.25 .291 .322 7.40 8.20 .002 Min 0.050 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Ordering Information Ordering Code PI3B3245Q PI3B3245QE PI3B3245L PI3B3245LE PI3B3245S PI3B3245SE Package Code Q Q L L S S Package Type 20-pin QSOP Pb-free & Green, 20-pin QSOP 20-pin TSSOP Pb-free & Green, 20-pin TSSOP 20-pin SOIC Pb-free & Green, 20-pin SOIC 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 PS8162F 09/23/04