PI3B3861 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, 10-Bit, 2-Port, NanoSwitch™ Features Description • • • • Near-Zero propagation delay 5-ohm switches connect inputs to outputs Fast Switching Speed - 4.5ns (max.) Ultra Low Quiescent Power (0.1µA Typical) – Ideally suited for notebook applications • Packaging (Pb-free & Green available): – 24-pin 150-mil wide plastic QSOP (Q) – 24-pin 173-mil wide plastic TSSOP (L) Pericom’s Semiconductor’s PI3B3861 is a 10-bit, 3.3 volt, 2-port bus switch designed with a low On-Resistance (5-ohm) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. The switches are turned ON by the Bus Enable (BE) input signal. Block Diagram Pin Configuration A0 SW B0 A9 SW B9 NC A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 GND SW BE A B 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 24-Pin 19 Q 18 17 16 15 14 13 Vcc BE B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BE Truth Table(1) Function Disconnect Connect Product Pin Description BE H L A0–9 Hi-Z B0–9 Pin Name BE A0 – 9 B0–9 GND VCC Notes: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance 1 Description Bus Enable Input (Active LOW) Bus A Bus B Ground Power PS8148E 09/23/04 PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch 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 .......................................... –0.5V to +4.6V DC Input Voltage ....................................................................... –0.5V to +4.6V 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 = 3.3V ±10%) Parameters Description Test Conditions(1) Min. VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level –0.5 IIH Input HIGH Current IIL Input LOW Current IOZH High Impedance Output Current 0 ≤ A, B ≤ VCC VIK Clamp Diode Voltage VCC = Min., IIN = –18mA RON Switch On Resistance(3) VCC = Min., VIN = 0.0V, ION = 48mA or 64mA VCC = Min, VIN = 2.4V, ION = 15mA Typ.(2) Max. Units V 0.8 V VCC = Max., VIN = VCC ±1 µA VCC = Max., VIN = GND ±1 µA ±1 µA –1.2 V 8 17 Ω Ω 5 10 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 3.0 8.0 pF pF CON A/B Capacitance, Switch On VIN = 0V 16.0 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 = 3.3V, 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. 2 PS8148E 09/23/04 PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description Min. ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.0V(3) Typ(2) Max. Units 0.1 3.0 µA 750 µA Notes: 1. For Max. or Min.conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 3.3V, +25°C ambient. 3. Per TTL driven input (control input only); A and B pins do not contribute to ICC. Switching Characteristics over Operating Range PI3B3861 Parame te rs De s cription Conditions (2,3) Units Com. M in. M a x. tPLH tPHL Propagation Delay(2,3) Ax to Bx, Bx to Ax CL= 50pF, RL= 500Ω tPZH tPZL Bus Enable Time BE to Ax or Bx CL= 50pF, RL= 500Ω 1 4.5 tPHZ tPLZ Bus Disable Time BE to Ax or Bx CL= 50pF, RL= 500Ω 1 4.5 0.25 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. Applications Information Logic Inputs The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a + 3.3V supply, IN may be driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® minimizes power consumption. Power-Supply Sequencing and Hot-Plug Information Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to input/output or control pins. Rail-to-Rail is a registeredtrademark of Nippon Motorola, Ltd. 3 PS8148E 09/23/04 PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 24-pin QSOP (Q) 24 .008 0.20 MIN. .150 .157 .008 .013 0.20 0.33 3.81 3.99 Guage Plane .010 0.254 .016 .035 0.41 0.89 Detail A 1 .337 .344 0˚-6˚ .041 1.04 REF 8.56 8.74 .033 0.84 .053 .069 .015 x 45˚ 0.38 1.35 1.75 Detail A .007 .010 SEATING PLANE .025 typical 0.635 .016 .050 .004 0.101 .010 0.254 .008 0.203 .012 0.305 0.178 0.254 0.406 1.27 .228 .244 5.79 6.20 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Packaging Mechanical: 24-pin TSSOP (L) 24 .169 .177 4.3 4.5 .004 .008 1 .303 .311 7.7 7.9 .0256 BSC 0.65 0.45 0.75 .047 1.20 Max .007 .012 0.19 0.30 .002 .006 SEATING PLANE 0.09 0.20 .018 .030 .252 BSC 6.4 0.05 0.15 X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS 4 PS8148E 09/23/04 PI3B3861 3.3V, 10-Bit, 2-Port, NanoSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Ordering Information Ordering Code PI3B3861Q PI3B3861QE PI3B3861L PI3B3861LE Package Code Q Q L L Package Type 24-pin QSOP Pb-free & Green, 24-pin QSOP 24-pin TSSOP Pb-free & Green, 24-pin T SSOP 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 5 PS8148E 09/23/04