PI5C3305 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 2-Bit Bus Switch with Individual Enables Product Features Product Description • • • • Near zero propagation delay 5-Ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra Low Quiescent Power (0.2µA Typical) – Ideally suited for notebook applications • Packages available: – 8-pin 173 mil wide plastic TSSOP (L) – 8-pin 118 mil wide plastic MSOP (U) Pericom Semiconductor’s PI5C series of logic circuits are produced using the Company’s advanced submicron CMOS technology, achieving industry leading speed grades. The PI5C3305 is a 2-bit bus switch designed with two individual 5-ohm bus switches with fast indiviual 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. Logic Block Diagram Product Pin Configuration B1 A1 BE1 A1 B1 BE1 A2 B2 GND 1 2 3 4 8-Pin L, U 8 7 6 5 VCC BE2 B2 A2 BE2 Truth Table(1) Product Pin Description Pin Name BEn A2-A1 B2-B1 Vcc GND BEn X* L H Description Switch Enable Bus A Bus B Power Ground An Hi-Z Hi-Z Bn Bn Hi-Z Hi-Z An Vcc GND Vcc Vcc Function Disconnect Disconnect Connect 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 PS8331C 01/11/01 PI5C3305 2-Bit Bus Switch with Individual Enables 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) Parameters Description VIH Input HIGH Voltage VIL Input LOW Voltage IIH Input HIGH Current Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC Min. 2.0 –0.5 Typ(2) VCC = Max., VIN = GND Max. 0.8 ±1 Units V V µA ±1 µA IIL Input LOW Current IOZH High Impedance Output Current 0 ≤A, B ≤VCC ±1 µA ION Low Impedance Output Current 0 ≤A, B ≤VCC ±1 µA VH Input Hysteresis at Control Pins RON Switch On Resistance(3) 150 VCC = 4.5V, VIN = 0.0V, ION = 30mA or 64mA VCC = 4.5V, VIN = 2.4V, ION = 15mA 5 10 mV Ω 7 15 Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) Description Test Conditions Typ Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V 3 5 pF pF CON A/B Capacitance, Switch On VIN = 0V 10 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. 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. Power Supply Characteristics Test Conditions(1) Parameters Description ICC ∆ICC Quiescent Power Supply Current Supply Current per Input @ TTL HIGH VCC = Max. VCC = Max. VIN = GND or VCC (3) VIN = 3.4V Min. Typ(2) Max. Units 0.1 3.0 µA 2.5 mA 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. 2 PS8331C 01/11/01 PI5C3305 2-Bit Bus Switch with Individual Enables 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Switching Characteristics Over Operating Range PI5C3305 Parame te rs Conditions (1) De s cription tPLH tPHL Propogation Delay(2,3) A to B, B to A tPZH tPZL Bus Enable Time tPHZ tPLZ Bus Disable Time C L = 50pF RL = 500Ω VCC =5V ±10% Units VCC = 4V M in. M ax. M in. M ax. — 0.25 0.25 1. 0 4.9 5.5 1.0 4.2 4.5 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. Ordering Information Part Pin - Package PI5C3305L 8 - TSSOP (L) PI5C3305UX 8 - MSOP (U) Te mpe rature –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 3 PS8331C 01/11/01