PI3B33X257 PERICOM | Alldatasheet
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Pericom Semiconductors PI3B series of logic circuits are produced using the Companys advanced sub micron CMOS technology, achieving industry leading performance. The PI3B33X257 is a 3.3V, 24:12 multiplexer/demultiplexer with three-state outputs. Inputs can be connected to outputs with low on resistance (5 Ohm) with no additional ground bounce noise or propagation delay. Logic Block Diagram En Sn YA (2) YB (2) YC (2) YD (2) Function H X Hi-Z Hi-Z Hi-Z Hi-Z Disable L L IA0 IB0 IC0 ID0 S = 0 L H IA1 IB1 IC1 ID1 S = 1 Truth Table(1) 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 IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1 YA YB YC YD IE0 IE1 IF0 IF1 IG0 IG1 IH0 IH1 YE YF YG YH II0 II1 IJ0 IJ1 IK0 IK1 IL0 IL1 YI YJ YK YL IA IA1 IB0 IB1 YA YB GND IE0 IE1 IF0 IF1 YE YF GND II0 II1 IJ0 IJ1 YI YJ GND YK IK1 IK0 YL IL1 IL0 VCC YG IG1 IG0 YH IH1 IH0 VCC YC IC1 IC0 YD ID1 ID0 VCC 48-Pin Product Configuration 48-Pin B Product Features Permits Hot Insertion Near zero propagation delay 5 Ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra Low Quiescent Power (0.2µA Typical) Ideally suited for notebook applications TTL - compatible control of input levels Fast switching speed - 4.5ns max. Packages available: 48-pin 150 mil wide plastic BQSOP (B) 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3B33X257 3.3V , 24:12 Mux/Demux BusSwitch
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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3B33X257 3.3V, 24:12 Mux/Demux BusSwitch Parameters Description Test Conditions (1) Min. Typ.(2) Max. Units V IH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V V IL Input LOW Voltage Guaranteed Logic LOW Level –0.5 0.8 V IIH Input HIGH Current V CC = Max., VIN = VCC ±50 µA IIL Input LOW Current V CC = Max., VIN = GND ±1 µA IOZH High Impedance Output Current 0 £££££ I, Y £££££ VCC ±50 µA V IK Clamp Diode Voltage V CC = Min., IIN = –18mA –1.2 V R ON Switch On Resistance(3) V CC = Min., VIN = 0.0V, ION = 48mA or 64mA 5 7 W V CC = Min., VIN = 2.4V, ION = 15mA 10 15 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. Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) Description Test Conditions Typ. Max. Units CIN Input Capacitance V IN = 0V 3.0 pF COFF In/Yn Capacitance, Switch Off V IN = 0V 17.0 pF CON In/Yn Capacitance, Switch On V IN = 0V 25.0 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 V CC = 3.3V, TA = 25°C ambient and maximum loading. 3. 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. 4. This parameter is determined by device characterization but is not production tested. Product Pin Description Pin Name Description IAn-ILn Data Inputs S Select Inputs En Enable YA-YL D ata Outputs GND Ground VCC Power NC No Connect Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.)
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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3B33X257 3.3V, 24:12 Mux/Demux BusSwitch PI3B33X257 Com. Parameters Description Conditions (1) Min. Max. Units tIY Propagation Delay(2,3) CL = 50pF 0.25 In to Yn R L = 500W tSY Bus Select Time 1 4.5 ns Sn to Yn t PZH Bus Disable Time 1 4.5 tPZL E to Yn tPHZ Bus Disable Time 1 4.8 tPLZ E to Yn Power Supply Characteristics Parameters Description Test Conditions (1) Min. Typ.(2) Max. Units ICC Quiescent Power V CC = Max. V IN = GND or VCC 0.1 3.0 µA Supply Current DICC Supply Current per V CC = Max. V IN = 3.0V(3) 750 µA Input @ TTL HIGH Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at V CC = 3.3V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V, control inputs only); I and Y pins do not contribute to ICC. Switching Characteristics over Operating Range 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 deter- mined 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 rebmuNtraPe gakcaP/niPe rutarepmeT B752X33IP) 84B(POSQB-84C °58+otC°04