PI3B34X245 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V Hot Insertion 32-Bit, 2-Port Bus Switch Product Features Product Description Pericom Semiconductors PI3B series of logic circuits are produced in the companys advanced submicron CMOS technology. The PI3B34X245 is a 3.3V, 32-bit, 2-port bus switch. Four enable signals (BEn) turn the switches on. The bus switch creates no additional propagational delay or additional ground bounce noise. Fast Switching Speed - 4.5ns max. Permits Hot Insertion Near-zero propagation delay 5 Ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (1.0µA typical) Ideally suited for notebook applications Industrial operating temperature: 40°C to +85°C Packages available: 80-pin, 150-mil wide plastic BQSOP (B) TTL - compatible control of input levels Product Pin Configuration NC A0 A1 A2 A3 A4 Logic Block Diagram A5 A6 A7 A0 B0 GND A7 B7 A9 NC A8 A10 A11 BE1 A8 A15 A12 A13 A14 A15 B8 GND B15 NC B16 A16 A17 A18 A19 A20 B23 A21 A22 A23 BE2 A16 A23 GND NC A24 BE3 A24 B24 A31 B31 A25 A26 A27 A28 A29 A30 A31 BE4 GND 1 1 2 3 4 5 6 80 VCC 79 78 77 76 BE1 B0 B1 B2 B3 7 8 9 10 75 74 73 72 71 11 12 13 14 70 69 68 67 15 80-PIN 66 B 65 16 64 17 63 18 62 19 61 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 B4 B5 B6 B7 VCC BE2 B8 B9 B10 B11 B12 B13 B14 B15 60 VCC 59 58 57 56 55 54 53 52 BE3 B16 B17 B18 B19 B20 51 50 49 48 47 46 45 44 43 42 41 B21 B22 B23 VCC BE4 B24 B25 B26 B27 B28 B29 B30 B31 PS8335A 10/05/00 PI3B34X245 3.3V Hot Insertion 32-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Truth Table(1) Function Disconnect Connect Product Pin Description BEn H L A031 Hi-Z B031 Pin Name BEn A0-A31 B0-B31 Notes: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance I/O I I/O I/O Description Bus Enable Input (Active LOW) Bus A Bus B 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 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%) Parame te rs De s cription Te s t Conditions M in. Typ. M ax. VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level −0.5 0.8 IIH Input HIGH Current VCC = Max., VIN = VCC IIL Input LOW Current VCC = Max., VIN = GND IOZH High Impedence Output Current 0 ≤ A, B ≤ VCC VIK Clamp Diode Voltage VCC = Min., INN = −18mA RON Switch On Resistance VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA Units V ±1 µΑ −0.8 V 5 8 10 17 Ω Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ. Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V 3.5 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. 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 PS8335A 10/05/00 PI3B34X245 3.3V Hot Insertion 32-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parame te rs De s cription ICC Quiescent Power Supply Current ∆ΙCC Supply Current per Input @ TTL HIGH Te s t Conditions (1) VCC = Max. VIN = GND or VCC M in. Typ.(2) M ax. 1.0 10 Units µA VCC = Max. VIN = 3.0V(3) 750 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. 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. Switching Characteristics over Operating Range PI3B34X245 Parame te rs D e s cription tPLH tPHL Propagation Delay (2,3) Ax to Bx, Bx to Ax tPZH tPZL Bus Enable Time BE to Ax or Bx tPHZ tPLZ Bus Disable Time BE to Ax or Bx Conditions (1) CL = 50pF RL = 500Ω CL = 50pF RL = 500Ω R = 500Ω Com. Units M in. M ax. 0.25 1.0 4.0 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. 3 PS8335A 10/05/00 PI3B34X245 3.3V Hot Insertion 32-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 80-pin BQSOP 80 41 .150 .157 3.80 4.00 .228 .244 5.80 6.20 .008 NOM 0.203 Gauge Plane 5˚ 1 .019 0.50 .029 0.75 40 0.50 .019 REF 0.803 0.811 20.40 20.60 .010 .016 .063 1.60 Nom .0197 BSC 0.50 X.XX X.XX .007 .010 0.17 0.27 .010 0.254 BSC 0.254 x 45˚ 0.406 .078 2.0 Max 5˚ .002 .009 0.05 0.25 DENOTES DIMENSIONS IN MILLIMETERS Ordering Information Orde ring Code Package Type PI3B34X245B 80- pin, 150- mil wide plastic BQSO P Pericom Semiconductor Corporation 2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com 4 PS8335A 10/05/00