PI3C32X245 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 2.5V/3.3V, High Bandwidth, Hot Insertion 16-Bit, 2-Port, Bus Switch Features Description • Near-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). • 5-ohm switches connect inputs to outputs • Permits Hot Insertion • 5V I/O Tolerant • 2.5V Supply Voltage Operation • Rail-to-Rail 3.3Vor 2.5V Switching • High Bandwidth Operation (>400 MHz) • Packaging (Pb-free & Green available) – 40-pin, 150-mil-wide plastic BQSOP (B) Pin Configuration Block Diagram A0 B0 A7 NC A0 A1 A2 A3 A4 B7 BE1 A8 A5 A6 A7 B8 A15 GND NC A8 B15 A9 BE2 A10 A11 A12 Truth Table(1) Function Disconnect Connect A13 A14 A15 BEN A0–15 H Hi-Z L B0–15 GND Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance 1 40 2 39 3 38 4 37 5 36 6 35 34 7 33 8 32 9 10 40-Pin 31 B 30 11 29 12 28 13 27 14 26 15 25 16 17 18 19 20 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 A0–A15 B0–B15 1 I/O I I/O I/O Description Bus Enable Input (Active LOW) Bus A Bus A PS8401C 09/24/04 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch 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%) 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) 0.8 Units V µA ±1 VCC = Min., IIN = –18mA VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA –0.73 –1.2 V 5 8 7 15 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 5.0 pF CON A/B Capacitance, Switch On VIN = 0V 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. 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 PS8401C 09/24/04 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description ICC ∆ICC Quiescent Power Supply Current Supply Current per Input HIGH Min. VCC = Max. VIN = GND or VCC VCC = Max. = 3.0V(3) Typ.(2) Max. 0.5 1.0 Units mA VIN 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 driven input (control input only); A and B pins do not contribute to ∆ICC. Switching Characteristics over 3.3V Operating Range PI3C32X245 P13C32X245 Parame te rs De s cription Conditions M in. 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 M a x. C L = 50pF RL = 500ohm C L = 50pF RL = 500ohm R = 500ohm Units Com. 0.25 1.5 9.8 6.5 1.5 8.3 5.5 ns Switching Characteristics over 2.5V Operating Range PI3C32X245 P13C32X245 Parame te rs De s cription Conditions M in. 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 M a x. C L = 50pF RL = 500ohm C L = 50pF RL = 500ohm R = 500ohm Units Com. 0.25 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 PS8401C 09/24/04 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 VOUT, (V) 4.0 VCC = 3.3V 3.1V 2.9V 2.7V 2.5V 3.8V 3.6V 3.4V 3.2V 3.0V 2.3V 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 Output Voltage vs. Input Voltage over Various Supply Voltages Packaging Mechanical: 40-pin BQSOP (B) X.XX DENOTES DIMENSION IN MILLIMETERS X.XX 4 PS8401C 09/24/04 PI3C32X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 16-Bit, 2-Port, Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Ordering Information Ordering Code PI3C32X245B PI3C32X245BE Package Code B B Package Type 40-pin BQSOP Pb-free & Green, 40-pin BQSOP 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 PS8401C 09/24/04