PI3B3251 3.3V, 8:1 Mux/DeMux NanoSwitch Features Description Near-Zero propagation delay Pericom Semiconductors PI3B3251 is a 3.3V Dual 8:1 Multiplexer/ Demultiplexer with three-state outputs that is pinout compatible 5 switches connect inputs to outputs with the PI74FCT251T, 74F251, and 74ALS/AS/LS 251. Inputs Ultra Low Quiescent Power (0.1A typical) can be connected to outputs with low On-Resistance (5) with no Ideally suited for notebook applications additional ground bounce noise or propagation delay. Pin compatible with 74 series 251 logic devices Packaging (Pb-free & Green available): 16-pin 150-mil wide plastic QSOP (Q) 16-pin 173-mil wide plastic TSSOP (L) Block Diagram Pin Con guration I0 I1 I2 I3 I4 I5 I6 I7 V 16 CC 1 I 3 SW I 2 15 4 I 2 E SW I 14 5 I 3 1 SW SW S0 I 13 6 4 I SW 0 S1 SW I 12 7 Y 5 IY SW S 11 0 S2 6 NC SW S 10 1 E 7 SW E S 9 2 GND 8 Y (1) Truth Table Pin Description Select Pin Name Description E Y Function S2 S1 S0 I Data Inputs 07 HXXX Hi-Z Disable S Select Inputs 02 LLLL I S2-0 = 0 E Enable 0 LLL H I S2-0 = 1 Y Data Outputs 1 LL H L I S2-0 = 2 GND Ground 2 LL H H I S2-0 = 3 V Power 3 CC LH L L I S2-0 = 4 NC No Connect 4 LH LH I S2-0 = 5 5 LH H L I S2-0 = 6 6 L HHH I S2-0 = 7 7 Note: 1. H = High Voltage Level, L = Low Voltage Level PS8150G 03/02/09 09-0037 1 PI3B3251 3.3V, 8:1 Mux/DeMux NanoSwitch Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Note: Storage Temperature .....................................................................65C to +150C Stresses greater than those listed under MAX I MUM RATINGS may cause per ma nent dam age to the Ambient Temperature with Power Applied ....................................40C to +85C device. This is a stress rating only and func tion al Supply Voltage to Ground Potential ................................................0.5V to +4.6V op er a tion of the device at these or any other condi- DC Input Voltage .............................................................................0.5V to +4.6V tions above those indicated in the operational sec- tions of this speci cation is not implied. Ex po sure DC Output Current ........................................................................................ 120mA to absolute maximum rating conditions for ex tend ed Power Dissipation ............................................................................................ 0.5W periods may affect reliability. DC Electrical Characteristics (Over the Operating Range, T = 40C to +85C, V =3.3V 10%) A CC (1) (2) Parameters De scrip tion Min. Max. Units Test Conditions Typ V Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 IH V V Input LOW Voltage Guaranteed Logic LOW Level 0.5 0.8 IL I Input HIGH Current V = Max., V = V 1 IH CC IN CC I Input LOW Current V = Max., V = GND 1 A IL CC IN I High Impedance Output Current 0 I , Y V 1 OZH N CC V Clamp Diode Voltage V = Min., I = 18mA 1.2 V IK CC IN V = Min., V = 0.0V, CC IN 58 I = 48mA or 64mA ON (3) R Switch On-Resistance ON V = Min., V = 2.4V, CC IN 10 17 I = 15mA ON Notes: 1. For Max. or Min. conditions, use appropriate value speci ed under Electrical Characteristics for the applicable device type. 2. Typical values are at V = 3.3V, T = 25C ambient and maximum loading. CC A 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. Capacitance (T = 25C, f = 1 MHz) A (1) De scrip tion Test Conditions Typ. Units Parameters C Input Capacitance 3.0 IN C I - I Capacitance, Switch Off 8.0 I(OFF) 0 7 V = 0V pF IN CY(OFF) Y Capacitance, Switch Off 64.0 C I - I Capacitance, Switch On 72.0 I(ON) 0 7 Note: 1. This parameter is determined by device characterization but is not production tested. PS8150G 03/02/09 09-0037 2