PI5C34X245 32-Bit, 2-Port Bus Switch Features Description Near-Zero propagation delay e Th PI5C34X245 is a 32-bit, 2-port bus switch. Four enable sig- nals (BEn) turn the switches on. e Th bus switch creates no ad- 5 switches connect inputs to outputs ditional propagational delay or additional ground bounce noise. Direct bus connection when switches are ON Ultra-low quiescent power (0.2A typical) Ideally suited for notebook applications Industrial operating temperature: 40C to +85C Packaging (Pb-free & Green available): 80-pin 150 mil wide BQSOP (B) Block Diagram Pin Configuration 1 80 NC VCC 2 79 A0 BE1 A0 B0 A1 3 78 B0 A2 4 77 B1 A3 5 76 B2 A4 6 75 B3 A7 B7 A5 7 74 B4 A6 8 73 B5 A7 9 72 B6 BE1 GND 10 71 B7 11 70 VCC NC A8 12 69 BE2 A8 B8 A9 13 68 B8 A10 14 67 B9 A11 15 66 B10 A12 16 65 B11 A15 B15 17 64 A13 B12 18 63 B13 A14 A15 19 62 B14 BE2 GND 20 61 B15 NC 21 60 VCC 22 59 BE3 A16 A16 B16 23 58 B16 A17 A18 24 57 B17 A19 25 56 B18 A20 26 55 B19 A23 B23 A21 27 54 B20 A22 28 53 B21 BE3 A23 29 52 B22 30 51 GND B23 NC 31 50 VCC A24 A24 B24 32 49 BE4 A25 33 48 B24 A26 34 47 B25 A27 35 46 B26 A31 B31 A28 36 45 B27 A29 37 44 B28 A30 38 43 B29 BE4 A31 39 42 B30 GND 40 41 B31 All trademarks are property of their respective owners. www.pericom.com 05/26/11 11-0009 1PI5C34X245 32-Bit, 2-Port Bus Switch Absolute Maximum Ratings Parameter Min. Max. Units o Storage Temperature -65 150 C o Ambient Temperature with Power Applied -40 85 C Supply Voltage to Ground Potential -0.5 7.0 V DC Input Voltage -0.5 7.0 V DC Output Current - 120 mA Power Dissipation - 0.5 W Stress beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. (1) Pin Description Truth Table Pin Name I/O Description Function BEn A0 - 31 I Bus Enable Input (Active LOW) Disconnect H Hi-Z BE X A0 A31 I/O Bus A Connect L B0 31 B0 B31 I/O Bus B Notes: 1. H = High Voltage Level, L = Low Voltage Level, Hi-Z = High Impedance DC Electrical Characteristics (Over the Operating Range, T = 40C to +85C, V = 5V 10%) A CC (1) (2) Parameters Description Test Conditions Min Typ Max Units V Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V IH V Input LOW Voltage Guaranteed Logic LOW Level -0.5 0.8 V IL I Input HIGH Current V = Max., V = V 1 IH CC IN CC I Input LOW Current V = Max., V = GND 1 A IL CC IN I High Impedance Output Current 0 - A, B - V 1 OZH CC Clamp Diode Voltage -0.7 -1.2 V V V = Min., I = 18 mA IK CC IN (3) Short Circuit Current 100 mA I A (B) = 0V, B (A) = V OS CC Input Hystersis at Control Pins V V H 5 7 V = Min., V = 0.0V, I = 48mA CC IN ON (4) Switch On Resistance R ON 10 15 V = Min, V = 2.4V, I = 15mA CC IN ON Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at V = 5.0V, T = 25C ambient and maximum loading. CC A 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. All trademarks are property of their respective owners. www.pericom.com 05/26/11 11-0009 2