PI5C3305 2-Bit Bus Switch with Individual Enables 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 • Packaging (Pb-free & Green available): – 8-pin 173-mil wide plastic TSSOP (L) – 8-pin 118-mil wide plastic MSOP (U) Pericom Semiconductor’s PI5C3305 is a 2-bit bus switch designed with two individual 5Ω switches with fast individual enables. When enabled via the associated Bus Enable (BE) pin, the “A” pin is directly connected to the “B” pin for that particular gate. The bus switch introduces no additional propagation delay or additional ground bounce noise. The PI5C3305 device has active HIGH enables. Block Diagram Pin Configuration B1 A1 BE1 A1 B1 GND BE1 A2 B2 8 7 6 5 1 2 3 4 VCC BE2 B2 A2 BE2 Truth Table(1) Pin Description Pin Name BEn Description Switch Enable BEn An Bn VCC Function X(2) Hi-Z Hi-Z GND Disconnect A2-A1 Bus A L Hi-Z Hi-Z VCC Disconnect B2-B1 Bus B H Bn An VCC Connect VCC Power GND Ground 09-0007 Notes: 1. H = High Voltage Level, L = Low Voltage Level Hi-Z = High Impedance, X = Don’t Care 2. A pull-up resistor should be provided for power-up protection. 1 PS8331I 12/02/09 PI5C3305 2-Bit Bus Switch with Individual Enables 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.............................................................................120mA Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent dam age 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 = 4V to 5.5V) 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 IOZ High Impedance Output Current 0 ≤ A, B ≤ VCC ±1 ION Low Impedance Output Current 0 ≤ A, B ≤ VCC ±1 VH Input Hysteresis at Control Pins RON Switch On-Resistance(3) V 0.8 250 VCC = 4.5V, VIN = 0.0V, ION = 30mA or 64mA 4 VCC = 4.5V, VIN = 2.4V, ION = –15mA 8 Units μA mV 7 Ω 15 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. Capacitance (TA = 25°C, f = 1 MHz) Parameters(1) Description CIN Input Capacitance COFF A/B Capacitance, Switch Off CON A/B Capacitance, Switch On Test Conditions Typ.(4) Units 3 VIN = 0V 5 pF 10 Notes: 1. This parameter is determined by device characterization but is not production tested. 09-0007 2 PS8331I 12/02/09 PI5C3305 2-Bit Bus Switch with Individual Enables Power Supply Characteristics Parameters ICC ICC Test Conditions(1) Description Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Min. Typ.(2) Max. Units 0.1 3.0 μA 2.5 mA VIN = GND or VCC VCC = Max. VIN = 3.4V(3) 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. Switching Characteristics Over Operating Range Parameters Description tPLH tPHL Propagation Delay(2, 3) A to B, B to A tPZH tPZL Bus Enable Time tPHZ tPLZ Bus Disable Time Test Conditions(1) CL = 50pF RL = 500Ω VCC = 5V ± 10% Min. Max. VCC = 4V Min. Max. 0.25 0.25 1.0 4.9 5.5 1.0 4.2 4.5 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. 09-0007 3 PS8331I 12/02/09 PI5C3305 2-Bit Bus Switch with Individual Enables Test Circuit VCC 7.0V 500Ω VIN VOUT Pulse Generator D.U.T 50pF RT CL 500Ω Switch Positions(1) Test Switch Open Drain Disable LOW Enable LOW 7V All Other Inputs Open Notes: 1. CL = Load Capacitance: inlcudes jig and proble capacitance. RT = Termination Resistance: should be equal to the ZOUT of the Pulse Generator. Enable and Disable Timing Enable Disable Control Input Output 3V 1.5V 0V tPZL Switch tPLZ 3V 1.5V 0.3V VOL tPHZ tPZH Output Normally High 3V VOH 0.3V 1.5V 0V 0V Notes: • Input Control Enable = Low; Input Control Disable = High • Pulse Generator for All Pulses: Rate ≤ 1.0 MHz; ZOUT ≤ 50Ω; tF, tR, ≤ 2.5ns 09-0007 4 PS8331I 12/02/09 PI5C3305 2-Bit Bus Switch with Individual Enables DOCUMENT CONTROL NO. PD - 1308 REVISION: E DATE: 11/15/05 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com Note: 1. Package Outline Exclusive of Mold Flash and Metal Burr 2. Controlling dimentions in millimeters 3. Ref: JEDEC MO-153F/AA DESCRIPTION: 8-Pin, 173-Mil Wide, TSSOP PACKAGE CODE: L 09-0007 5 PS8331I 12/02/09 PI5C3305 2-Bit Bus Switch with Individual Enables -AX 0$ 2%6)3)/.% $!4% 'AUGE 0LANE $/#5-%.4#/.42/,./ -AX 2%& $ETAIL! $ETAIL! -!8 -!8 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com .OTES #ONTROLLING$IMENSIONSIN-ILLIMETERS 2EF*%$%#-/%!! $%3#2)04)/.0IN-INI3MALL/UTLINE0ACKAGE-3/0 0!#+!'%#/$%5 Note: • For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php Ordering Information Ordering Code Package Code Package Description PI5C3305LEX L Pb-free & Green, 8-Pin TSSOP PI5C3305UEX U Pb-free & Green, 8-Pin MSOP Notes: • Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ • E = Pb-free & Green • Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 09-0007 6 PS8331I 12/02/09