PI5C3253 Dual 4:1 Mux/DeMux 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 • Pin compatible with 74 series 253 logic devices • Packaging (Pb-free & Green available): – 16-pin 150-mil wide plastic QSOP (Q) – 16-pin 300-mil wide plastic SOIC (S) – 16-pin 150-mil wide plastic SOIC (W) – 16-pin 173-mil wide plastic TSSOP (L) Pericom Semiconductor’s PI5C3253 is a Dual 4:1 Multiplexer/ demultiplexer with three-state outputs that is pinout compatible with the PI74FCT253T, 74F253, and 74ALS/AS/LS 253. Inputs can be connected to outputs with low on resistance (5Ω) with no additional ground bounce noise or propagation delay. Block Diagram IA0 Pin Configuration IA1 IA2 IA3 IB0 IB1 IB2 IB3 EA EB EA 1 16 VCC S1 2 15 EB IA3 3 14 S0 IA2 4 13 IB3 S0 IA1 5 12 IB2 S1 IA0 6 11 IB1 YA 7 10 IB0 GND 8 9 YB YA YB Truth Table(1) Enable EA EB H X X H L L L L L L L L Select S1 S0 X X X X L L L H H L H H Pin Description YA Hi-Z X IA0 IA1 IA2 IA3 YB X Hi-Z IB0 IB1 IB2 IB3 Pin Name IAn, IBn S0–1 EA, EB YA, YB GND VCC Function Disable A Disable B S1-0 = 0 S1-0 = 1 S1-0 = 2 S1-0 = 3 Description Data Inputs Select Inputs Enable Data Outputs Ground Power Note: 1. H = High Voltage Level, L = Low Voltage Level 1 PS7017C 09/14/04 PI5C3253 Dual 4:1 Mux/DeMux Bus 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............................................................................ 120mA Power Dissipation ................................................................................ 0.5W DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±5%) Parameters Description Test Conditions(1) 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 IOZH High Impedance Output Current 0 ≤ IN, YN ≤ VCC ±1 VIK Clamp Diode Voltage VCC = Min., IIN = –18mA IOS Short Circuit VH Input Hysteresis at Control Pins RON Switch On-Resistance(4) Current(3) Min. I (Y) = 0V, Y (I) = VCC Typ.(2) Max. 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 Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description CIN Input Capacitance COFF IA/IB Capacitance, Switch Off CON IA/IB Capacitance, Switch On Test Conditions Typ. Max. Units 6 VIN = 0V 6 pF 24 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 I and Y pin at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (I,Y) pins. 5. This parameter is determined by device characterization but is not production tested. 2 PS7017C 09/14/04 PI5C3253 Dual 4:1 Mux/DeMux Bus Switch Power Supply Characteristics Parameters Test Conditions(1) Description ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) Supply Current per Input per MHz(4) VCC = Max., I and Y Pins Open BE = GND Control Input Toggling 50% Duty Cycle ICCD Min. Typ.(2) Max. Units 0.1 3.0 µA 2.5 mA 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); I and Y 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 I and Y 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 Conditions(1) Description tIY Propagation Delay(2,3) In to Yn tSY Bus Select Time, Sn to Yn tPZH tPZL Bus Enable Time, En to Yn tPHZ tPLZ Bus Disable Time, En to Yn Com. Min. Max. Units 0.25 CL = 50pF RL = 500Ω 0.5 6.6 0.5 6.0 0.5 6.0 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. 3 PS7017C 09/14/04 PI5C3253 Dual 4:1 Mux/DeMux Bus Switch Packaging Mechanical: 16-pin QSOP (Q) 16 .008 0.20 MIN. .150 .157 3.81 3.99 Guage Plane .010 0.254 1 0˚-6˚ .016 .035 0.41 0.89 Detail A .189 .197 4.80 5.00 .041 1.04 REF .015 x 45° 0.38 .008 0.203 REF .053 1.35 .069 1.75 Detail A .008 .012 0.203 0.305 .007 .010 0.178 0.254 0.41 .016 1.27 .050 SEATING PLANE .025 BSC 0.635 .008 .013 0.20 0.33 .228 .244 5.79 6.19 .004 0.101 .010 0.254 X.XX DENOTES DIMENSIONS IN MILLIMETERS X.XX Packaging Mechanical: 16-pin SOIC (S) 16 .2914 .2992 7.40 7.60 .010 0.254 x 45˚ .029 0.737 1 .398 10.10 .413 10.50 .020 0.508 .030 0.762 0.41 .016 1.27 .050 .0926 2.35 .1043 2.64 .394 .419 10.00 10.65 SEATING PLANE .050 BSC 1.27 .0091 0.23 .0125 0.32 0-8˚ .013 .020 0.33 0.51 .0040 .0118 0.10 0.30 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS 4 PS7017C 09/14/04 PI5C3253 Dual 4:1 Mux/DeMux Bus Switch Packaging Mechanical: 16-pin SOIC (W) 16 3.78 3.99 .149 .157 .0099 .0196 0.25 x 45˚ 0.50 1 .0075 .0098 0-8˚ .386 .393 9.80 10.00 0.41 1.27 .053 .068 .0155 .0260 0.393 0.660 REF 1.35 1.75 .016 .050 .2284 .2440 5.80 6.20 SEATING PLANE .050 BSC 1.27 0.19 0.25 .0040 0.10 .0098 0.25 .013 .020 0.330 0.508 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Packaging Mechanical: 16-pin TSSOP (L) 16 .169 .177 1 .193 .201 4.9 5.1 4.3 4.5 .004 .008 .047 max. 1.20 0.45 .018 0.75 .030 SEATING PLANE .0256 BSC 0.65 .007 .012 .002 .006 0.09 0.20 .252 BSC 6.4 0.05 0.15 X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS 0.19 0.30 5 PS7017C 09/14/04 PI5C3253 Dual 4:1 Mux/DeMux Bus Switch Ordering Information Ordering Code Package Code Package Description PI5C3253Q Q 16-pin 150-mil wide QSOP PI5C3253QE Q Pb-free & Green, 16-pin 150-mil wide QSOP PI5C3253S S 16-pin 300-mil wide SOIC PI5C3253SE S Pb-free & Green, 16-pin 300-mil wide SOIC PI5C3253W W 16-pin 150-mil wide SOIC PI5C3253WE W Pb-free & Green, 16-pin 150-mil wide SOIC PI5C3253L L 16-pin 173-mil wide TSSOP PI5C3253LE L Pb-free & Green, 16-pin 173-mil wide TSSOP 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 6 PS7017C 09/14/04