PI5C32X384/PI5C32X384C 20-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI5C32X384/32X384C 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 20-Bit, 2-Port BusSwitch Product Features Product Description • • • • Pericom Semiconductor’s PI5C series of BusSwitch circuits are produced using the Company’s advanced submicron CMOS technology, achieving industry leading performance. The PI5C32X384 and PI5C32X384C are 20-bit 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. Near-zero propagation delay 5Ω switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power 32X384 (0.2 µA typical) – Ideally suited for notebook applications • Packages available: – 48-pin 150-mil wide plastic BQSOP (B) – 48-pin 240-mil wide plastic TSSOP (A) Product Pin Configuration Logic Block Diagram A0 B0 A5 B5 A4 B4 A9 B9 A15 B15 A10 B10 A19 B19 A14 B14 BEA BEB BEC B5 A5 A6 B6 B7 A7 A8 B8 B9 A9 GND BEC BED Truth Table(1) Function Disconnect Connect Connect Connect Function Disconnect Connect Connect Connect BEA H L H L BEC H L H L BEB H H L L BED H H L L B4–B0 Hi-Z A4-A0 Hi-Z A4-A0 B9–B5 Hi-Z A9-A5 Hi-Z A9-A5 BEA B0 A0 A1 B1 B2 A2 A3 B3 B4 A4 GND B19-B15 Hi-Z Hi-Z A19-A15 A19-A15 B14-B10 Hi-Z Hi-Z A14-A10 A14-A10 1 2 3 4 5 6 7 8 9 10 48-Pin 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 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 L = Low Voltage Level Hi-Z = High Impedance 1 Description Bus Enable Inputs (Active LOW) Bus A Bus B Ground Power PS7027D 05/10/99 PI5C32X384/PI5C32X384C 20-Bit, 2-Port BusSwitch 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 +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) . –0.5V to +7.0V DC Input Voltage ................................................................... –0.5V to +7.0V DC Output Current .............................................................................. 120mA 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. Power Dissipation ....................................................................................0.5W DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±5%) Test Conditions(1) Parameters Description Min. Typ(2) Max. Units VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 — — V VIL Input LOW Voltage Guaranteed Logic LOW Level — — 0.8 V IIH Input HIGH Current VCC = Max., VIN = VCC — — ±1 µA IIL Input LOW Current VCC = Max., VIN = GND — — ±1 µA IOZH High Impedance Output Current 0 ≤ (A,B)(C,D) ≤VCC — — ±1 µA A,B (C,D) = 0V, C,D (A,B) = VCC — 300 — mA — 150 — mV VCC = Min., VIN = 0.0V ION = 48mA — 5 7 Ω VCC = Min., VIN = 2.4V ION = 15mA — 10 15 Ω (3) IOS Short Circuit Current VH Input Hysteresis at Control Pins RON Switch ON Resistance(4) Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ Max. Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V — — 6 6 pF pF CON A/B Capacitance, Switch On VIN = 0V — 8 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 = 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 AB and CD pin at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (A or B, C or D) pins. 5. This parameter is determined by device characterization but is not production tested. 2 PS7027D 05/10/99 PI5C32X384/PI5C32X384C 20-Bit, 2-Port BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parameters Test Conditions(1) Description ICC Quiescent Power Supply Current VCC = Max. ∆I CC Supply Current per VCC = Max. Input @ TTL HIGH ICCD Supply Current per Input per MHz(4) Min. VIN = GND or VCC PI5C32X384C PI5C32X384 Typ(2) Max. Units 60 0.1 VIN = 3.4V(3) VCC = Max., A and B Pins Open BE1 or BE2 = GND Control Input Toggling 50% Duty Cycle 200 3.0 µA 2.5 mA 0.25 mA/ MHz Notes: 1. For Max. or Min. conditons, 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. PI5C32X384/PI5C32X384C Switching Characteristics over Operating Range Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BEX to Ax or Bx Bus Disable Time BEx to Ax or Bx Conditions(1) CL = 50pF RL = 500Ω PI5C32X384/32X384C Min. Typ. Max. 0.25 1.5 6.5 1.5 5.5 Units 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. Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 3 PS7027D 05/10/99