PI5C32160C 16-Bit to 32-Bit, DeMux PCI Hot-Plug Bus Switch with –1.5V Undershoot Protection Features Description • • • • • • • • • • • • Pericom Semiconductor’s PI5C32160C is a 16 to 32-bit demultiplexer bus switch. Industry leading advantages include a propagation delay of 250ps, resulting from 5Ω channel resistance, and low I/O capacitance. A port demultiplexes to either 1B and 2B or to both. The switch is bidirectional. RON is 5Ω typical Pull-up on B1 and B2 ports Undershoot protection on A-port only: –1.5V Low Power: 70µA typical Industrial Operation Temperature: –40ºC to +85ºC Near-Zero propagation delay Switching speed: 5ns max. Channel on capacitance: 15pF max. VCC Operating Range: +4.5V to +5.5V ESD>2000V . . . Human Body Model >100 MHz bandwidth (or clock rate) at 20pF load capacitance Packaging (Pb-free & Green available) - 56-pin TSSOP (A) Application Provides PCI Hot-Plugging Block Diagram Pin Description ��� VBIAS1 VBIAS2 � ��� �� ��� Pullup 1B2 VBIAS1 Pullup VBIAS2 Pullup SEL1 SEL2 � � �� �� ���� �� ��� ���� ���� ��� ������ ���� 1 �� � � �� ��� ���� �� � �� ���� �� � �� ��� ��� ���� �� �� �� ��� ���� 16B2 � �� �� ��� 16B1 16A �� ��� �� ��� 1B1 1A ��� � ��� Pullup � �� �� �� ��� ��� �� ��� ��� �� �� �� ��� �� �� �� ��� �� ��� �� ��� �� �� ��� � ��� �� �� �� �� ��� �� �� �� �� �� ��� ���� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� ���� ���� ��� ���� ���� ��� ���� ���� ������ ���� PS8362E 03/10/05 PI5C32160C 16-Bit to 32-Bit, DeMux PCI Hot-Plug Bus Switch with –1.5V Undershoot Protection 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 ±10%, VBIAS = 1.3V to VCC) Parameters Test Conditions(1) 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 A= 0V or VCC Max., VBIAS1 = VBIAS2 = VCC Max. ±1 IOZL Low Impedence Output Current B = 0V, VBIAS1 = VBIAS2 = VCC Max. 0.25 B = VCC max., VBIAS1 = VBIAS2 = VCC Max. –1.0 VIK Clamp Diode Voltage VCC = Min., IIN = –18mA RON Switch On-Resistance(4) Units V 0.8 5 µA mA µA –0.7 –1.8 V VCC = Min., VIN = 0.0V, ION = 48mA 5 8 Ω VCC = Min., VIN = 2.4V, ION = 15mA 10 15 Truth Table Function SEL1 SEL2 NA to NB1 L H NA to NB2 H L and NB2 L L to VBIAS H H NA to NB1 NB1, NB2 2 PS8362E 03/10/05 PI5C32160C 16-Bit to 32-Bit, DeMux PCI Hot-Plug Bus Switch with –1.5V Undershoot Protection Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description CIN Input Capacitance COFF A/B Capacitance, Switch Off CON A/B Capacitance, Switch On Test Conditions Typ. Max. Units 3.5 VIN = 0V 6.5 pF 13.5 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 Description Test Conditions(1) ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ΔICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) other pin=VCC or GND ICCD Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open Control Input Toggling 50% Duty Cycle Parameters Min. Typ(2) Max. Units 70 200 µA 2.5 mA 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 PI5C32160C Parameters Description Test Conditions(1) Com. Min. tPLH tPHL Propagation Delay(2,3) A to B tPZH tPZL Bus Enable Time SEL TO A,B tPHZ tPLZ Bus Disable Time SEL to A,B Typ. Units Max. 0.25 CL = 50pF RL = 500Ω 1.3 5.0 0.5 5.0 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 PS8362E 03/10/05 PI5C32160C 16-Bit to 32-Bit, DeMux PCI Hot-Plug Bus Switch with –1.5V Undershoot Protection 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. Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying Vbias and signals to the input/output pins. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd Packaging Mechanical: 56-pin TSSOP (A) 56 .236 6.0 .244 6.2 1 .547 13.9 .555 14.1 1.20 .047 Max. SEATING PLANE .004 0.09 .008 0.20 .0197 BSC 0.50 .007 .011 0.17 0.27 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS 0.45 .018 0.75 .030 .002 .006 0.05 0.15 .319 BSC 8.1 Ordering Information Ordering Code Package Code Package Description PI5C32160CA A 56-pin 240-mil wide, TSSOP PI5C32160CAE A Pb-free & Green, 56-pin 240-mil wide, TSSOP 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 4 PS8362E 03/10/05