PI5C34X245 32-Bit, 2-Port Bus Switch Features Description • • • • Near-Zero propagation delay 5Ω switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.2µA typical) – Ideally suited for notebook applications • Pin compatible with QS32X245 • Industrial operating temperature: –40°C to +85°C • Packaging (Pb-free & Green available): – 80-pin BQSOP (B) – 80-pin DFN (ZA) Pericom Semiconductor’s PI5C series of logic circuits are produced in the Company’s advanced submicron CMOS technology. The PI5C34X245 is a 32-bit, 2-port bus switch. Two enable signals (BEn) turn the switches on. The bus switch creates no additional propagational delay or additional ground bounce noise. Pin Configuration Block Diagram A0 B0 A7 B7 NC A0 A1 A2 A3 A4 A5 A6 A7 GND NC A8 A9 A10 A11 A12 A13 A14 A15 GND NC A16 A17 A18 A19 A20 A21 A22 A23 GND NC A24 A25 A26 A27 A28 A29 A30 A31 GND BE1 A8 B8 A15 B15 BE2 A16 B16 A23 B23 BE3 A24 B24 A31 B31 BE4 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 VC C BE1 B0 B1 B2 B3 B4 B5 B6 B7 VC C BE2 B8 B9 B10 B11 B12 B13 B14 B15 VC C BE3 B16 B17 B18 B19 B20 B21 B22 B23 VC C BE4 B24 B25 B26 B27 B28 B29 B30 B31 PS7058F 08/2/04 PI5C34X245 32-Bit, 2-Port BusSwitch 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 .....................................–0.5V to +7.0V DC Input Voltage ..................................................................–0.5V to +7.0V DC Output Current............................................................................120 mA Power Dissipation .................................................................................0.5W Truth Table(1) Function 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. Pin Description Pin Name I/O Description BEn A0-A31 Disconnect H Hi-Z BEX Connect L B0-31 A0-A31 I/O Bus A B0-B31 I/O Bus B Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance I Bus Enable Input (Active LOW) DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±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 — 0.8 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 — — ±1 VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — –0.7 –1.2 V IOS Short Circuit A (B) = 0V, B (A) = VCC 100 — — mA VH Input Hystersis at Control Pins RON Switch On-Resistance(4) VCC = Min., VIN = 0V, ION = 48mA — 5 7 VCC = Min., VIN = 2.4V, ION = 15mA — 10 15 Current(3) 2 PS7058F Units V µA Ω 08/2/04 PI5C34X245 32-Bit, 2-Port BusSwitch Capacitance (TA = 25°C, f = 1 MHz) Paramaters(5) Description CIN Input Capacitance COFF A/B Capacitance, Switch OFF CON A/B Capacitance, Switch ON Test Conditions Max. Units 6 VIN = 0V 6 pF 12 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 = 5.0V, 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. Power Supply Characteristics Parameters Test Conditions(1) Description Min. Typ(2) Max. Units ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC –– 0.1 3.0 µA ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) –– –– 2.5 mA Supply Current per Input per MHz(4) VCC = Max., A & B Pins Open BEn = GND, Control Input Toggling 50% Duty Cycle –– –– 0.25 mA/ MHz ICCD Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 5.0V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V, control inputs 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 PI5C34X245 Parameter Description Conditions(1) Com. Min. tPLH tPHL Propagation 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 Units Max. 0.25 CL = 50pF RL = 500Ω 1.5 5.6 1.5 5.2 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 PS7058F 08/2/04 PI5C34X245 32-Bit, 2-Port BusSwitch Packaging Mechanical: 80-Pin, 150 Mil Wide Plastic BQSOP (B) 80 41 .228 .244 5.80 6.20 .150 .157 3.80 4.00 .008 NOM 0.203 Gauge Plane 5˚ 0.50 .019 REF 0.803 0.811 20.40 20.60 .010 .016 .063 1.60 Nom 0.254 x 45˚ 0.406 .078 2.0 Max 5˚ .007 .010 0.17 0.27 .0197 BSC 0.50 .010 0.254 BSC .019 0.50 .029 0.75 40 1 .002 .009 0.05 0.25 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS Packaging Mechanical: 80-Pin, Plastic Very Fine Pitch Dual Flat No-lead DFN (ZA) .020 0.50 BSC .033 0.84 MAX LEAD THICKNESS .232 .240 5.90 6.10 .008 0.20 NOM 0.10 M C A B .007 .011 0.17 0.27 .00 .0016 0.00 STANDOFF 0.04 .803 .811 20.40 20.60 .115 2.925 NOM 2 PLACES .014 .016 0.35 4 PLACES .040 .033 0.85 NOM 2 PLACES .035 0.90 NOM 4 PS7058F 08/2/04 PI5C34X245 32-Bit, 2-Port BusSwitch Ordering Information Ordering Code Packaging Code Package Type PI5C34X245B B 80-Pin 150 Mil Wide Plastic BQSOP PI5C34X245BE B Pb-free & Green, 80-Pin 150 Mil Wide Plastic BQSOP PI5C34X245ZA ZA 80-Pin Plastic Very Fine Pitch Dual Flat No lead (DFN) PI5C34X245ZAE ZA Pb-free & Green, 80-Pin Plastic Very Fine Pitch Dual Flat No lead (DFN) Notes: 1. This product has always shipped as only a lead free product, but since it was introduced prior to Pericom’s strategy of adding an E to all Green/ Lead free parts many customers order it without the E suffix. Please migrate new designs and qualification to include the E suffix. Pericom at this point in time will continue to offer devices marked both ways, but may at a later date eliminate the non-E part number. 2. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 3. Number of transistors = TBD Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 5 PS7058F 08/2/04