PI5C3383 5-Bit, 4-Port Bus Exchange 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 173-mil wide plastic TSSOP (L) – 24-pin 150-mil wide plastic QSOP (Q) – 24-pin 300-mil wide plastic SOIC (S) The PI5C3383 is a 5-bit, 4-port bus switch with exchange designed with a low On-Resistance allowing inputs to be connected directly to outputs. The switch creates no additional propagational delay or additional ground bounce noise. The switch is turned ON by the Bus Enable (BE) input signal, and the Bus Exchange (BX) input signal offers nibble swapping of the AB and CD pairs of signals. This exchange configuration allows byte swapping of buses in systems. It can also be used as a quad 2-to-1 multiplexer and to create low delay barrel shifters, etc. Block Diagram Pin Configuration A0 C0 B0 D0 A4 C4 B4 D4 BE C0 A0 B0 D0 C1 A1 B1 D1 C2 A2 GND 24 23 22 21 20 19 18 17 16 15 14 13 Vcc D4 B4 A4 C4 D3 B3 A3 C3 D2 B2 BX Pin Description BX Pin Name BE Truth Table(1) Function 1 2 3 4 5 6 7 8 9 10 11 12 BE BX A0-A4 B0-B4 Disconnect H X Hi-Z Hi-Z Connect L L C0-C4 D0-D4 Exchange L H D0-D4 C0-C4 Note: 1. H =High Voltage Level, X = Don’t Care L = Low Voltage Level, Hi-Z = High Impedance 1 Description BE Bus Enable Input (Active LOW) BX Bus Exchange Input AX Bus A BX Bus B CX Bus C DX Bus D GND Ground VCC Power PS7028G 12/10/04 PI5C3383 5-Bit, 4-Port Bus Exchange Switch Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ..........................................................–65°C to +150°C 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. 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............................................................................120 mA Power Dissipation .................................................................................0.5W DC Electrical Characteristics (Over the Operating Range, TA= –40°C to +85°C, VCC = 5V ±5%) Parameters Test Condidtions(1) Description Min. Typ.(2) Max Units VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 - - VIL Input LOW Voltage Guaranteed Logic LOW Level -0.5 - 0.8 IIH Input HIGH Current VCC = Max., VIN = VCC - - ±1 IIL Input LOW Current VCC = Max., VIN = GND - - ±1 IOZH High Impedance Output Current 0 ≤ A B, CD ≤ VCC - - ±1 VIK V Clamp Diode Voltage VCC =Min., IIN = -18mA - -0.7 -1.2 IOS Short Circut Current(3) AB (CD) = 0V, CD (AB) = VCC 100 - - mA VH Input Hysteresis at Control Pins - 150 - mV - 5 7 - 10 15 RON Switch On-Resistance(4) VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min., VIN = 2.4V, ION = 15mA V µA Ω Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) CIN Description Test Conditions Input Capacitance COFF AB/CD Capacitance, Switch OFF CON AB/CD Capacitance, Switch ON Typ. Units 6 VIN = 0V 8 pF 14 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. 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 AB and CD pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A or B, C or D) pins. 5. This parameter is determined by device characterization but is not production tested. 2 PS7028G 12/10/04 PI5C3383 5-Bit, 4-Port Bus Exchange Switch Power Supply Characteristics Parameters ICC ∆ICC ICCD Test Conditions(1) Description Min. Typ. Max. Units Quiescent Power Supply Current VCC = Max. VIN = GND or VCC - 0.1 3.0 µA Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) - - 2.5 mA Supply Current per Input per MHz(4) VCC = Max., AB and CD pins Open BE = GND Control Input Toggling 50% Duty Cycle - - 0.25 mA/ MHz 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, B, C, and D 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, B, C, and D 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 Condidtions(1) Description tPLH tPHL Propagation Delay(2, 3) Ax to Cx, Bx to Dx tPZH tPZL Bus Enable Time BE to Cx or Dx tPHZ tPLZ Bus Disable Time BE to Cx or Dx tBX Bus Exchange Time BX to Cx or Dx CL = 50pF RL = 500Ω Com Min. Typ. Max - 0.25 - 1.5 - 6.5 1.5 - 5.5 1.5 - 6.5 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 0.25\ns 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 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, the control or select pins may be driven low to 0V and high to 5.5V. Driving the control or select pins Rail-toRail 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. 3 PS7028G 12/10/04 PI5C3383 5-Bit, 4-Port Bus Exchange Switch Packaging Mechanical: 24-Pin TSSOP (L) 24 .169 .177 4.3 4.5 .004 .008 1 .303 .311 7.7 7.9 0.45 .018 0.75 .030 .047 1.20 Max .007 .012 0.19 0.30 .0256 BSC 0.65 0.09 0.20 .252 BSC 6.4 SEATING PLANE .002 0.05 .006 0.15 Packaging Mechanical: 24-Pin QSOP (Q) 24 .008 0.20 MIN. .150 .157 3.81 3.99 Guage Plane .010 0.254 .016 .035 0.41 0.89 Detail A 1 .337 .344 .053 .069 .015 x 45˚ 0.38 1.35 1.75 Detail A SEATING PLANE .025 typical 0.635 0˚-6˚ .041 1.04 REF 8.56 8.74 .033 0.84 .008 .013 0.20 0.33 .008 0.203 .012 0.305 .004 0.101 .010 0.254 .007 .010 .016 .050 0.178 0.254 0.406 1.27 .228 .244 5.79 6.20 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS 4 PS7028G 12/10/04 PI5C3383 5-Bit, 4-Port Bus Exchange Switch Packaging Mechanical: 24-Pin SOIC (S) 24 .2914 .2992 7.40 7.60 .010 .029 0.254 x 45˚ 0.737 1 .0091 .0125 0-8˚ .5985 15.20 .6141 15.60 0.23 0.32 0.41 .016 1.27 .050 .021 0.533 .031 0.787 .0926 2.35 .1043 2.65 SEATING PLANE .050 BSC .013 .020 0.33 0.51 1.27 .0040 .0118 .394 .419 10.00 10.65 0.10 0.30 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Ordering Information Ordering Code Packaging Code Package Type PI5C3383L L 24-pin 173-mil wide plastic TSSOP PI5C3383LE L Pb-free & Green, 24-pin 173-mil wide plastic TSSOP PI5C3383Q Q 24-pin 150-mil wide plastic QSOP PI5C3383QE Q Pb-free & Green, 24-pin 150-mil wide plastic QSOP PI5C3383S S 24-pin 300-mil wide plastic SOIC PI5C3383SE S Pb-free & Green, 24-pin 300-mil wide plastic SOIC 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 PS7028G 12/10/04