PI3C34X245 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 2.5V/3.3V, High Bandwidth, Hot Insertion 32-Bit, 2-Port, Bus Switch Product Features Product Description Near zero propagation delay Pericom Semiconductors PI3C series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance. 5Ω switches connect inputs to outputs 2.5V Supply Voltage Operation The PI3C34X245 is a 2.5V or 3.3V, 32-bit, 2-port bus switch designed with a low ON resistance (5Ω) 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. It is very useful in switching signals that have high bandwidth (>400 MHz). Permits Hot Insertion 5V I/O Tolerant High Bandwidth Operation (>400 MHz) Packages available: 80-pin 150 mil wide plastic BQSOP (B) Product Pin Configuration Logic Block Diagram A0 A7 B0 NC A0 A1 A2 A3 B7 A4 A5 A6 A7 GND BE1 NC A8 A9 A8 B8 A10 A11 A12 A15 A13 A14 A15 B15 GND NC A16 A17 A18 A19 BE2 A16 A20 B16 A21 A22 A23 A23 GND NC A24 B23 A25 A26 A27 A28 A29 BE3 A24 B24 A31 B31 A30 A31 GND 80 79 78 77 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 76 75 74 73 72 71 70 69 68 67 66 80-Pin 65 B 64 63 62 61 VCC BE1 B0 B1 B2 B3 B4 B5 B6 B7 VCC BE2 B8 B9 B10 B11 B12 B13 B14 B15 21 60 VCC 22 23 24 25 26 27 28 29 30 31 32 59 58 57 56 55 BE3 B16 B17 33 34 35 36 37 38 39 40 54 53 52 51 50 49 48 47 46 45 44 43 B18 B19 B20 B21 B22 B23 VCC BE4 B24 B25 B26 B27 B28 B29 42 B30 41 B31 Product Pin Description Pin Name BEn A0 A31 B0 B31 BE4 1 Description Bus Enable Input (Active LOW) Bus A Bus B PS8429B 12/10/99 PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-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%) Test Conditions(1) Parameters Description 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 V µA ±1 VCC = Min., IIN = –18mA (3) 0.8 Units 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(4) 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. 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 PS8429B 12/10/99 PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description Min. ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ∆ICC Supply Current per Input HIGH VCC = Max. VIN = 3.0V(3) Typ.(2) Max. 1.0 Units 2.0 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 driven input (control input only); A and B pins do not contribute to ∆ICC. Switching Characteristics over 3.3V Operating Range P13C34X245 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 ax. CL = 50pF RL = 500Ω CL = 50pF RL = 500Ω R = 500Ω Units Com. 0.25 1.5 6.5 1.5 5.5 ns Switching Characteristics over 2.5V Operating Range P13C34X245 Parame te rs De s cription Conditions M in. tPLH tPHL Propagation Delay Ax to Bx tPZH tPZL Bus Enable Time BE to Ax or Bx tPHZ tPLZ Bus Disable Time BE to Ax or Bx (2,3) M ax. CL = 50pF RL = 500Ω CL = 50pF RL = 500Ω R = 500Ω 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 timesof 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 PS8429B 12/10/99 PI3C34X245 2.5V/3.3V, High Bandwidth, Hot Insertion, 32-Bit, 2-Port, Bus Switch 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 D ime ns ions PI3C34X245B 80 - BQ SO P (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 PS8429B 12/10/99