PI5C32161C 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 16-Bit to 32-Bit, Demux PCI Hot-Plug Bus Switch with 2V Undershoot Protection Product Features Product Description RON is 5 Ohm typical Precharge on B1 and B2 ports minimizes line insertion noise Undershoot protection on A port only: 2V Low Power: 70µA typical Industrial Operation Temperature: 40ºC to +85ºC Near Zero propagation delay Channel ON Capacitance: 15pF max. VCC Operating Range: +3.0V to +3.6V ESD>2000V....Human Body Model >100 MHz switching (enable clock rate) at 20pF load capacitance Packages available: 56-pin plastic TSSOP (A) Pericom Semiconductors PI5C series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance. Logic Block Diagram Pin Description The PI5C32161C is a 16- to 32-bit demultiplexer bus switch. It is intended for PCI Hot-Plug applications. Industry leading advantages include a propagation delay of 250ps, resulting from 5-Ohm channel resistance, and low I/O Capacitance. A port demultiplexes to either 1B and 2B or to both. The switch is bidirectional. Precharge bias voltage is provided on B ports to minimize live insertion noise. The A port can handle up to 2V undershoot during switch disable. Application Provides PCI Hot Plugging VBIAS1 Pullup 1B1 1A VBIAS2 1B1 1 56 2B1 2 55 2A 3B1 3 4 2B2 4B1 5 54 53 52 4A 5B1 6 7 8 51 4B2 5A 6B1 6A 7B1 Pullup 8B1 1B2 8A GND VBIAS1 VCC Pullup 16A 16B2 14 15 16 56-Pin A 8B2 44 GND Vcc 11A 11B2 12B2 12B1 19 20 38 SEL1 14A 15B1 SEL2 16B1 16A VBIAS1 SEL1 6B2 45 39 21 5B2 7A 7B2 18 14B1 1 13 3A 3B2 46 17 12A 13B1 Pullup 10 11 12 10A 11B1 10B1 VBIAS2 49 48 47 9 43 42 41 40 9B1 16B1 50 1A 1B2 37 36 9A 9B2 10B2 22 23 35 13A 13B2 34 14B2 24 25 33 15A 32 31 15B2 30 29 VBIAS2 26 27 28 16B2 SEL2 PS8421B 05/01/00 PI5C32161C 16-Bit to 32-Bit, Demux PCI Hot-Plug Bus Switch with 2V Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Function SEL1 SEL2 nA to nB1 L H nA to nB2 H L nA to nB1 and nB2 L L nB1, nB2 = VBIAS H H 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 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 the Operating Range, TA = –40°C to +85°C, VCC = 5V ±10%, VBIAS = 1.3V to VCC) 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 –0.5 — 0.8 V IIH Input HIGH Current VCC = Max., VIN = VCC — — ±1 µA IIL Input LOW Current VCC = Max., VIN = GND — — ±1 µA IOZA High Impedance Output Current A= 0V or VCC max., VBIAS1 = VBIAS2=VCC max. — — ±1 µA IOZB High Impedence Output Current B= 0V or VCC max., VBIAS1 = VBIAS2=VCC max. –0.2 — –2 mA VIK Clamp Diode Voltage –0.7 –1.8 V rON VCC = Min., IIN = –18mA (4) Switch On Resistance VCC = Min., VIN = 0.0V, ION = 48mA — 5 8 Ω VCC = Min., VIN = 2.4V, ION = 15mA — 10 15 Ω 2 PS8421B 07/07/00 PI5C32161C 16-Bit to 32-Bit, Demux PCI Hot-Plug Bus Switch with 2V Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ. CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V CON A/B Capacitance, Switch On VIN = 0V Max. Units 3.5 4.5 — — pF pF 13.5 — 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 A and B pins 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 Test Conditions(1) Parameters Description Min. Typ(2) Max. Units ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC — — 200 µA ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) other pin=VCC or GND — — 2.5 mA ICCD Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open Control Input Toggling 50% Duty Cycle — — 0.25 mA/ MHz 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. 5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested. Switching Characteristics over Operating Range Parameters t PLH t PHL t PZH t PZL t PHZ t PLZ Description Propagation Delay(2,3) A to B Bus Enable Time SEL TO A,B Bus Disable Time SEL to A,B PI5C32161C Com. Typ. Max. Conditions(1) Min. CL = 50pF RL = 500Ω 0.25 10 35 1 6 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. 3 PS8421B 07/07/00 PI5C32161C 16-Bit to 32-Bit, Demux PCI Hot-Plug Bus Switch with 2V Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 56-pin TSSOP (A) 56 .236 .244 1 .547 .555 6.0 6.2 13.9 14.1 1.20 .047 Max. SEATING PLANE .004 0.09 .008 0.20 .0197 BSC 0.50 .007 .011 0.17 0.27 .002 .006 0.05 0.15 0.45 .018 0.75 .030 .319 BSC 8.1 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Ordering Information Part Pin - Package Width PI5C32161CA 56- TSSOP (A) 240- mil Applications Information Logic Inputs The logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a +5.0V supply, IN may be driven low to 0V and high to 5.5V. Driving IN Rail-to-Rail® minimizes power consumption. Power-Supply Sequencing Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying signals to the bias voltage pin and the input/output or control pins. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 4 PS8421B 07/07/00