PI3C32X384 PI3C32X2384 (25ohm) 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 2.5V/3.3V, High Bandwidth, Hot Insertion 20-Bit, 2-Port, Bus Switch Product Features Product Description Near-zero propagation delay Low noise, 25ohm version (PI3C32X2384) 5ohm switches connect inputs to outputs (PI3C32X384) High Bandwidth (>400 MHz) Permits Hot Insertion. 5V I/O Tolerant 2.5V Supply Voltage Operation Packages available: 48-pin 150-mil wide plastic BQSOP (B) 48-pin 240-mil wide plastic TSSOP (A) Pericom Semiconductors PI3C series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry performance. The PI3C32X384, and PI3C32X2384 are 2.5V or 3.3Volt, highbandwidth 20-bit, 2-port 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. The PI3C32X2384 is designed with an internal 25ohm resistor reducing noise reflection in high-speed applications. Applications High Bandwidth Data switching Hot Docking Product Pin Configuration Logic Block Diagram A0 B0 A5 B5 BEA B0 A0 A4 B4 A9 B9 A15 B15 A10 B10 A1 B1 B2 A2 A3 A19 B19 A14 B3 B4 B14 A4 GND BEC BEA BEB B5 A5 A6 BEC B6 B7 BED Truth Table (1) Function Disconnect Connect Connect Connect Function Disconnect Connect Connect Connect BEA H L H L BEC H L H L BE B H H L L BED H H L L B0-B4 Hi-Z A4-A0 Hi-Z A4-A0 B9-B5 Hi-Z A9-A5 Hi-Z A9-A5 B5-B9 Hi-Z Hi-Z A19-A15 A19-A15 B14-B10 Hi-Z Hi-Z A14-A10 A14-A10 48 47 46 45 44 43 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A7 A8 B8 19 20 B9 22 23 24 A9 GND 21 48-Pin A,B 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 Product Pin Description Pin Name BEX A19 - A0 B19 - B0 GND VCC Note: 1. H = High Voltage Level, X = Dont Care, L = Low Voltage Level, Hi-Z = High Impedance 1 Description Bus Enable Inputs (Active LOW) Bus A Bus B Ground Power PS8430A 12/10/99 PI3C32X384/PI3C32X2384 (25ohm) 2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port BusSwitch 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 (Inputs & VCC Only) ... 0.5V to +4.6V Supply Voltage to Ground Potential (Outputs & D/O Only) . 0.5V to +4.6V DC Input Voltage ................................................................. 0.5V to +5.5V 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 Operating Range, TA = 40°C to +85°C, VCC = 3.3V ±10%) Parame te rs Te s t Conditions (1) De s cription M in. Typ.(2) 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 ±1 IIL Input LOW Current VCC = Max., VIN = GND ±1 IOZH High- Impedence Output Current 0 ≤ A, B ≤ VCC ±1 VIK Clamp diode Voltage 0.73 1.2 PI3C32X384 5 7 PI3C32X2384 18 28 40 PI3C32X384 8 15 PI3C32X2384 18 35 48 RON Switch On Resistance(3) VCC = Min., IIN = 18mA VCC = Min.,VIN = 0.0V ION = 48mA or 64mA VCC = Min.,VIN = 2.4V ION = 15mA Units V µA V Ω Capacitance (TA = 25°C f = 1 MHz) Parame te rs (4) De s cription CIN Input Capacitance COFF A/B Capacitance, Switch Off CON A/B Capacitance, Switch On Te s t Conditions Typ. Units 3.5 VIN = 0V 5.0 pF 10.0 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. 4. This parameter is determined by device characterization but is not production tested. 2 PS8430A 12/10/99 PI3C32X384/PI3C32X2384 (25ohm) 2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Te s t Conditions (1) Parame te rs De s cription ICC Quiescent Power Supply Current ∆ICC Supply Current per Input @ TTL HIGH VCC = Max., VIN = GND or VCC PI3C32X384 PI3C32X2384 VCC = Max., VIN = 3.0V(3) M in. Typ.(2) M ax. 0.50 1.0 Units mA 2.5 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 inputs only); A and B pins do not contribute to ICC. PI3C3384/PI3C32384 Switching Characteristics over 3.3V Operating Range PI3C32X384 Parame te rs D e s cription tPLH tPHL Propogation 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 Conditions (1) CL = 50pF RL = 500ohm CL = 50pF RL = 500ohm Units Com. M in. M ax. 0.25 1.5 6.5 1.5 5.5 ns PI3C3384/PI3C32384 Switching Characteristics over 2.5V Operating Range PI3C32X2384 Parame te rs D e s cription tPLH tPHL Propogation Delay(2,3) tPZH tPZL Bus Enable Time BEx to Ax or Bx tPHZ tPLZ Bus Disable Time BEx to Ax or Bx Ax to Bx, Bx to Ax Conditions (1) CL = 50pF RL = 500ohm CL = 50pF RL = 500ohm Units Com. M in. M ax. 1.25 1.5 9.8 1.5 8.3 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 PS8430A 12/10/99 PI3C32X384/PI3C32X2384 (25ohm) 2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 4.0 VCC = 3.3V 3.1V 2.9V 2.7V 2.5V VOUT, (V) 2.3V 3.8V 3.6V 3.4V 3.2V 3.0V 2.8V 2.0 0.0 0.0 1.0 3.0 2.0 4.0 5.0 VIN, (V) Output Voltage vs. Input Voltage over Various Supply Voltages Ordering Information Part Pin - Package Dime ns ions PI3C32X384A 48 - TSSOP (A) 40°C to +85°C PI3C32X384B 48 - TSSOP (B) 40°C to +85°C Pericom Semiconductor Corporation 2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com 4 PS8430A 12/10/99