PI5C33X257 24:12 MUX/DEMUX BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI5C33X257 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 24:12 MUX/DEMUX BusSwitch Product Features Product 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 • Packages available: –48-pin 150 mil wide plastic QSOP (B) Pericom Semiconductor’s PI5C series of logic circuits are produced in the Company’s advanced 0.8 micron CMOS technology, achieving industry leading performance. The PI5C33X257 is a 24:12 multiplexer/demultiplexer with threestate outputs. Inputs can be connected to outputs with low on resistance (5Ω) with no additional ground bounce noise or propagation delay. Truth Table(1) Logic Block Diagram En Sn YA2 YB2 YC2 YD2 Function H L L X L H Hi-Z IA0 IA1 Hi-Z IB0 IB1 Hi-Z IC0 IC1 Hi-Z ID0 ID1 Disable S=0 S=1 IB0 IB1 IC0 IC1 ID0 ID1 E0 Notes: 1. H = High Voltage Level L = Low Voltage Level 2. n = 0 YA, YB, YC, YD n = 1 YE, YF, YG, YH n = 2 YI, YJ, YK, YL S0 48-Pin Product Configuration YA S0 1 48 IA0 2 47 E0 3 46 ID0 YA 4 45 ID1 IB0 5 44 YD IB1 6 43 IC0 YB 7 42 IC1 GND 8 41 YC VCC S1 9 40 IE0 10 39 E1 IE1 11 38 IH0 YE 12 37 IH1 IF0 13 36 YH IF1 14 35 IG0 YF 15 34 IG1 GND 16 33 YG S2 17 32 VCC II0 18 31 E2 II1 19 30 IL0 YI 20 29 IL1 IJ0 21 28 YL IJ1 22 27 IK0 YJ 23 26 IK1 GND 24 25 YK YB IE1 IE0 VCC IA1 48-Pin B IA1 IA0 IF0 YC IF1 IG0 YD IG1 IH0 IH1 E1 S1 YE YF II1 II0 IJ0 YG IJ1 IK0 YH IK1 IL0 IL1 E2 S2 YI 188 YJ YK YL PS8114 04/24/97 PI5C33X257 24:12 MUX/DEMUX BusSwitch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pin Description Pin Name IAn-ILn S En YA-YL GND VCC NC Description Data Inputs Select Inputs Enable Data Outputs Ground Power No Connect 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 ............................................................................ 120 mA 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. Power Dissipation ................................................................................... 0.5W DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±5%) Test Conditions(1) Parameters Description 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 Typ(2) Max. Units V 0.8 V VCC = Max., VIN = VCC ±1 µA Input LOW Current VCC = Max., VIN = GND ±1 µA IOZH High Impedance Output Current 0 ≤ I, Y ≤ VCC ±1 µA VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA –1.2 V IOS Short Circuit Current(3) I (Y) = 0V, Y (I) = VCC VH Input Hysteresis at Control Pins RON (4) Switch On Resistance –0.7 100 mA 150 VCC = Min., VIN = 0.0V, ION = 48 mA VCC = Min., VIN = 2.4V, ION = 15 mA mV 5 10 Ω 7 15 Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions CIN COFF Input Capacitance In/Yn Capacitance, Switch Off CON In/Yn Capacitance, Switch On Typ Max. Units VIN = 0V VIN = 0V 6 6 pF pF VIN = 0V 14 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. 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. 189 PS8114 04/24/97 PI5C33X257 24:12 MUX/DEMUX BusSwitch 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 = 3.4V(3) ICCD Supply Current per Input per MHz(4) VCC = Max., I and Y Pins Open BE = GND Control Input Toggling 50% Duty Cycle 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 Description tIY tSY tPZH tPZL tPHZ tPLZ Propagation Delay(2,3) In to Yn Bus Select Time Sn to Yn Bus Disable Time E to Yn Bus Disable Time E to Yn Conditions(1) CL = 50 pF RL = 500Ω PI5C33X257 Com. Min. Max. Unit 0.25 ns 0.5 5.2 ns 0.5 4.8 ns 0.5 5.0 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 0.25 ns for 50 pF 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. Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 190 PS8114 04/24/97