PI5C3306CD 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 2-Bit Bus Switch with Dual Side Undershoot Protection Product Features Product Description • • • • • Pericom Semiconductor’s PI5C series of logic circuits are produced using the Company’s advanced submicron CMOS technology, achieving industry leading performance. The PI5C3306CD is a 5V, 2-bit Dual Side bus switch. It is intended for PCI Hot-Plug applications. Industry leading advantages include a propagation delay of 250ps that result from its 5-ohm channel resistance and low I/O capacitance. The A-ports switch data to B outputs and are bidirectional. The PI5C3306CD device has active LOW enables. When the switch is disabled, the A&B ports can handle up to –2V undershoot. RON is 5-ohms typical Undershoot protection up to –2V (data inputs only) Industrial Operation Temperature: –40°C to +85°C Near zero propagation delay Packages available: – 8-pin 173 mil wide plastic TSSOP (L) – 8-pin 118 mil wide plastic MSOP (U) Applications • PCI Hot Plugging for live insertion • Memory bank sharing Product Pin Configuration Logic Block Diagram A1 B1 BE1 A2 BE1 A1 B1 GND B2 BE2 1 2 3 4 8-Pin L, U 8 7 6 5 Vcc BE2 B2 A2 Truth Table(1) Product Pin Description BEn An Bn Vcc Function Switch Enable X* Hi- Z Hi- Z GND Disconnect A2- A1 Bus A H Hi- Z Hi- Z VCC Disconnect B2- B1 Bus B L Bn An VCC Connect VCC Power GND Ground Pin Name BEn De s cription Notes: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance X = Don’t Care *A pull-up resistor should be provided for power-up protection. 1 PS8523A 08/27/02 PI5C3306CD 2-Bit Bus Switch with Dual Side Undershoot Protection 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 +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 = 4V to 5.5V) Parame te rs Te s t Conditions (1) De s cription M in. Typ(2) M ax. 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 ±10 IIL Input LOW Current VCC = Max., VIN = GND ± 10 IOZH High Impedance Output Current 0 ≤ A, B ≤ VCC ±10 VIK Clamp Diode Voltage VCC = Min., IIN = –2mA –1.8 VUP Undershoot Protection Voltage(4,5) Max Inputs, Undershoot Pulse Duration <50ns –2.0 RON Switch On Resistance(3) VCC = Min., VIN = 0.0V, ION = 48mA VCC = 4.5V, VIN = 2.4V, ION = 15mA VCC = Min., VIN = 2.4V, ION = 15mA Units V 0.8 5 10 16 µA V 7 15 20 ohm Capacitance (TA = 25°C, f = 1 MHz) Parame te rs (4) De s cription CIN Input Capacitance C O FF A/B Capacitance, Switch Off CON A/B Capacitance, Switch On Te s t Conditions Typ. Units 1.7 VIN = 0V 2.5 pF 7.7 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. 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. 5. See Parameter Measurements for description of characterization method. 2 PS8523A 08/27/02 PI5C3306CD 2-Bit Bus Switch with Dual Side Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description ICC Quiescent Power Supply Current ∆ICC VCC = Max. Supply Current per Input @ TTL HIGH VCC = Max. Min. Typ(2) Max. Units 75 µA 2.5 mA VIN = GND or VCC (3) VIN = 3.4V 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. PI5C3306CD Switching Characteristics Over Operating Range Com Parame te rs tP LH / tP HL De s cription (2 , 3 ) Propagation Delay M in. Conditions A to B, B to A CL = 50pF, RL = 500ohm M a x. Units 0.25 tP ZH / tP ZL Bus Enable Time 0.5 6.6 tP HZ / tP LZ Bus Disable Time 0.5 6.0 ns Parameter Measurements 2xVDD VIN R1 VIN VOUT D.U.T. VIN VOUT 0V 20pF R2 >2.4V –2V 25ns R1 = R2 = 10kΩ Undershoot Test Circuit Undershoot Test Waveforms Notes: 1. See test circuit and waveforms. 2. This parameter is guaranteed but not tested on Propagation Delays. 3. The bus switch contributes no propagation 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 propagation 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. 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, BE, maybe driven LOW to 0V and HIGH to 5.5V. Driving BE 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 input/ output or control pins. Hot Insertion For Datacom and Telecom applications that have ten or more volts passing through the backplane, a high voltage from the power supply may be seen at the device input pins during hot insertion. The PI5Cxxxx devices have maximum limits of 7V and 120mA for 20ns. If the power is higher or applied for a longer time or repeatedly reaches the maximum limits, the device can be damaged. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. 3 PS8523A 08/27/02 PI5C3306CD 2-Bit Bus Switch with Dual Side Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 8-Pin TSSOP (L) Packaging Mechanical: 8-Pin MSOP (U) .003 .012 0.07 0.30 15˚ Max. .003 .012 0.07 0.30 Gauge Plane .010 0.25 .016 .028 0.40 0.70 15˚ Max. .037 0.95 REF 0˚- 6˚ Detail A .112 2.85 .120 3.05 Detail A 15˚ MAX .114 2.90 .122 3.10 15˚ MAX .114 2.90 .122 3.10 Thermal Characteristics can be found on the web: http://www.pericom.com/packaging/mechanicals.php Ordering Information Part Pin - Package Te mpe rature PI5C3306CDL 8 - TSSOP (L) –40°C to +85°C PI5C3306CDU 8 - MSOP (U) –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 PS8523A 08/27/02