PI5C3861 10-Bit, 2-Port Bus Switch 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): – 24-pin, 150-mil wide plastic QSOP (Q) Pericom Semiconductor’s PI5C3861 is a 10-bit, 2-port bus switch designed with a low On-Resistance (5Ω) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagation delay or additional ground bounce noise. The switches are turned ON by the Bus Enable (BE) input signal. Block Diagram Pin Configuration A0 B0 A9 B9 NC A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC BE B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BE Pin Description Pin Name BE Truth Table(1) Description Bus Enable Input (Active LOW) A0–9 Bus A BE A0–9 B0–9 Bus B Disconnect H Hi-Z GND Ground Connect L B0–9 VCC Power NC No Connect Function Note: 1. H = High Voltage Level, L = Low Voltage Level, Hi-Z = High Impedance 07-0125 1 PS7021H 05/02/07 PI5C3861 10-Bit, 2-Port Bus Switch Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature .................................................................. –55°C to +125°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.....................................................................................120 mA 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 = 5V ±5%) 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 VIK Clamp Diode Voltage VCC = Min., IIN = –18mA IOS SHORT CIRCUIT CURRENT(3) A (B) = 0V, B (A) = VCC VH Input Hysteresis at Control Pins RON Switch On-Resistance(4) Units V 0.8 –0.7 μA –1.2 100 V MA 150 mV VCC = Min., VIN = 0.0V, ION = 48mA 5 7 VCC = Min., VIN = 2.4V, ION = 15mA 10 15 Ω Notes: 1. For conditions shown as Max. or Min., 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 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) CIN Description Test Conditions Input Capacitance COFF A/B Capacitance, Switch Off CON A/B Capacitance, Switch On Typ. Max. Units 6 VIN = 0V 6 pF 8 Notes: 1. This parameter is determined by device characterization but is not production tested. 07-0125 2 PS7021H 05/02/07 PI5C3861 10-Bit, 2-Port Bus Switch Power Supply Characteristics Parameters ICC ΔICC ICCD Test Conditions(1) Description Quiescent Power Supply Current VCC = Max. VIN = GND or VCC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open BE = Control Input Toggling 50% Duty Cycle Min. Typ(2) Max. Units 0.1 10 μA 2.5 mA 0.25 mA/ MHz Notes: 1. For conditions shown as Max. or Min., 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. Switching Characteristics over Operating Range Parameters Description Com. Conditions Min. tPLH tPHL Propagation Delay(1,2) Ax to Bx, Bx to Ax tPZH tPZL Bus Enable Time BE to Ax or Bx tPHZ tPLZ Bus Disable Time BE to Ax or Bx Unit Max. 0.25 CL = 50pF RL = 500Ω 1.5 6.5 1.5 5.5 ns Notes: 1. This parameter is guaranteed but not tested on Propagation Delays. 2. 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. 07-0125 3 PS7021H 05/02/07 PI5C3861 10-Bit, 2-Port Bus Switch 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 .041 1.04 REF 8.56 8.74 .033 0.84 0˚-6˚ .053 .069 .015 x 45˚ 0.38 1.35 1.75 Detail A .007 .010 SEATING PLANE .025 typical 0.635 0.406 1.27 .016 .050 .004 0.101 .010 0.254 .008 0.203 .012 0.305 0.178 0.254 .228 .244 5.79 6.20 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Ordering Information Ordering Code Package Code Package Description PI5C3861Q Q 24-pin 150-mil wide plastic QSOP PI5C3861QE Q Pb-free & Green, 24-pin 150-mil wide plastic QSOP 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 07-0125 4 PS7021H 05/02/07