PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion 16-Bit, 2-Port, Bus Switch Features Description ÎÎNear-Zero propagation delay Pericom Semiconductor’s PI3C32X245 is a 2.5V or 3.3V 16-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 (BEN) input signal. It is very useful in switching signals that have high bandwidth (>400 MHz). ÎÎ5-ohm switches connect inputs to outputs ÎÎPermits Hot Insertion ÎÎCapable of Hot-Swapping ÎÎ5V I/O Tolerant ÎÎ2.5V Supply Voltage Operation ÎÎRail-to-Rail 3.3V or 2.5V Switching ÎÎHigh Bandwidth Operation (>400 MHz) ÎÎPackaging (Pb-free & Green): àà 40-pin, 150-mil-wide plastic BQSOP (B) Block Diagram Pin Configuration A0 B0 A7 NC A0 A1 A2 A3 B7 A4 BE1 A5 A8 A6 A7 B8 A15 GND NC B15 A8 A9 A10 A11 BE2 A12 A13 A14 A15 Truth Table(1) Function BEN A0-15 Disconnect H Hi-Z Connect L B0-15 Note: H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance GND 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC BE1 B0 B1 B2 B3 B4 B5 B6 B7 VCC BE2 B8 B9 B10 B11 B12 B13 B14 B15 Pin Description Pin Name BEN All trademarks are property of their respective owners. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 11-0008 1 Description Bus Enable Input (Active LOW) A0-15 Bus A B0-15 Bus B www.pericom.com PS8401E 01/11/11 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch Absolute Maximum Ratings Parameter Min. Max. Units Storage Temperature -65 150 o C Ambient Temperature with Power Applied -40 85 o C Supply Voltage to Ground Potential (Inputs & VCC Only) -0.5 4.6 V Supply Voltage to Ground Potential (Outputs & D/O Only) -0.5 4.6 V DC Input Voltage -0.5 5.5 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. 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 VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level -0.5 IIH Input HIGH Current VCC = Max., VIN = VCC ±1 IIL Input LOW Current VCC = Max., VIN = GND ±1 IOZH High Impedance Output Current 0 ≤ A, B ≤ VCC VIK Clamp Diode Voltage RON Switch On Resistance(4) Units V 0.8 V μA ±1 -0.73 -1.2 VCC = Min., VIN = 0.0V, ION = 48mA 5 7 VCC = Min, VIN = 2.4V, ION = 15mA 8 15 VCC = Min., IIN = –18 mA V Ω Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ Units CIN Input Capacitance VIN = 0V 3.5 pF COFF A/B Capacitance, Switch Off VIN = 0V 5.0 pF CON A/B Capacitance, Switch On VIN = 0V 10.0 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. All trademarks are property of their respective owners. 11-0008 2 www.pericom.com PS8401E 01/11/11 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch Power Supply Characteristics Parameters Description Test Conditions(1) Min ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ΔICC Supply Current per Input HIGH VCC = Max. VIN = 3.0V(3) Typ (2) Max 0.5 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 input only); A and B pins do not contribute to ΔICC . Switching Characteristics over 3.3V Operating Range P13C32X245 Com. Parameters Description tPLH tPHL Propagation Delay(2,3) Ax to Bx tPZH tPZL Bus Enable Time BE to Ax or Bx tPHZ tPLZ Bus Disable Time BE to Ax or Bx Test Conditions Min CL = 50 pF R L = 500Ω Max Units 0.25 CL = 50 pF R L = 500Ω R = 500Ω 1.5 6.5 1.5 5.5 ns Switching Characteristics over 2.5V Operating Range P13C32X245 Com. Parameters Description tPLH tPHL Propagation Delay(2,3) Ax to Bx tPZH tPZL Bus Enable Time BE to Ax or Bx tPHZ tPLZ Bus Disable Time BE to Ax or Bx Test Conditions Min CL = 50 pF R L = 500Ω Max Units 0.25 CL = 50 pF R L = 500Ω R = 500Ω 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 0.25 ns for 50 pF 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. All trademarks are property of their respective owners. 11-0008 3 www.pericom.com PS8401E 01/11/11 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch 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 2.0 VIN, (V) 3.0 4.0 5.0 Output Voltage vs. Input Voltage over Various Supply Voltages Output Voltage vs. Input Voltage over Various Supply Voltages All trademarks are property of their respective owners. 11-0008 4 www.pericom.com PS8401E 01/11/11 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch Packaging Mechanical: 40-pin BQSOP (B) DOCUMENT CONTROL NO. PD - 1209 REVISION: F DATE: 03/09/05 1 X.XX DENOTES DIMENSION IN MILLIMETERS X.XX Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com Notes: 1. Controlling dimensions in millimeters 2. Ref.: JEDEC MO - 154C/BB 3. Package Outline Exclusive of Mold Flash and Metal Burr DESCRIPTION: 40-Pin, 150-Mil Wide BQSOP PACKAGE CODE: B Ordering Information Ordering Code Package Code Package Type PI3C32X245BE B Pb-free & Green, 40-pin BQSOP 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Pericom Semiconductor Corporation • 1-800-435-2336 All trademarks are property of their respective owners. 11-0008 5 www.pericom.com PS8401E 01/11/11