PI3B16244 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, 16-Bit, 4-Port NanoSwitch™ Features Description • • • • • • • Pericom Semiconductor’s PI3B16244 is a 16-bit, 4-port bus switch that is pin compatible with the 74 series 16244 16-bit driver. Four enable signals (nBE) turn the switch on similar to the enable signals of the 16244. The bus switch creates no additional propagation delay or ground bounce noise. Near-Zero propagation delay 5-ohm switches connect inputs to outputs when enabled Fast Switching Speed - 4ns max. Pin compatible with 74 series 16244 Operating Vcc: 3.0V to 3.6V Industrial operating temperature: –40°C to +85°C Packaging (Pb-free & Green available): – 48-pin 240 mil wide thin plastic TSSOP (A) – 48-pin 300 mil wide plastic SSOP (V) Pin Configuration Block Diagram 1BE 1A0 1BE 3BE SW 1B0 3A0 1 2 48 47 2BE 3 4 46 45 1A1 GND 5 6 44 43 1A2 1B3 VCC 7 42 2B1 GND 8 9 10 41 40 39 2A1 GND 2B2 11 38 2A2 2B3 12 13 37 36 2A3 1B0 SW 3B0 1B1 GND 1A1 1A2 1A3 SW 1B1 3A1 SW 1B0 3A2 SW 1B1 3 A3 SW 3B1 SW 3B0 SW 3B1 1B2 SW 2B0 A 2BE B 4BE 2A0 SW 2B0 4A0 SW 4B0 2A1 SW 2B1 4 A1 SW 4B1 2A2 SW 2B2 4A2 SW 4B2 2A3 SW 2B3 4 A3 SW 4B3 3B0 BE nBE nA0-7 Disconnect H Hi- Z Connect L nB0- 7 2A0 3A0 3B1 14 35 3A1 15 34 GND 3B2 16 33 3A2 3B3 32 31 3A3 VCC 17 18 VCC 4B0 19 30 4A0 4B1 20 21 29 28 4A1 GND 27 26 4A2 4B3 22 23 4BE 24 25 3BE 4B2 Function 1A3 VCC GND GND Truth Table(1) 1A0 4A3 Pin Description Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance 1 Pin Name I/O De s cription nBE I nA0- nA7 I/O Bus A nB0- nB7 I/O Bus B Bus Output Enable (Active Low) PS8170D 10/01/04 PI3B16244 3.3V, 16-Bit, 4-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Above which useful life may be impaired. For user guidelines, not tested.) 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. Storage Temperature ...................................................... –65°C to +150°C Ambient Temperature with Power Applied ...................... –40°C to +85°C Supply Voltage Range ....................................................... –0.5V to +4.6V DC Input Voltage ............................................................... –0.5V to +4.6V DC Output Current ........................................................................120 mA Power Dissipation ............................................................................. 0.5W DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.0V to 3.6V) Parame te rs Te s t Conditions (1) De s cription M in. Typ.(2) M ax. VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level –0.5 IIH Input HIGH Current VC C = Max., VIN = VC C ±1 IIL Input LOW Current VC C = Max., VIN = GND ±1 IO ZH High Impedance Output Current 0 ≤ A, B ≤ VC C ±1 VIK Clamp Diode Voltage VC C = Min., IIN = –18mA RO N Switch ON Resistance(3) Units V 0.8 –0.7 –1.2 VC C = Min., VIN = 0.0V, ION = 48mA 5 8 VC C = Min., VIN = 2.4V, ION = 15mA 10 15 µA V Ω Capacitance (TA = 25°C, f = 1 MHz) Parame te rs (4) De s cription CIN Input Capacitance C O FF A/B Capacitance, Switch Off CON A/B Capacitance, Switch On Te s t Conditions Typ. Units 3.0 VIN = 0V 8.5 pF 17.0 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 = 3.3V, TA = 25°C ambient and maximum loading. 3. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A,B) pins. 4. This parameter is determined by device characterization but is not production tested. 2 PS8170D 10/01/04 PI3B16244 3.3V, 16-Bit, 4-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parame te rs Conditions (1) De s cription M in. Type (2) M ax. ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC — — 10 ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.0V(3) — — 750 ICCD Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open Control Input Toggling 50% Duty Cycle — — 0.25 Units µA 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 = 3.3V, +25°C ambient. 3. Per TTL driven input (control inputs only); A and B 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 and B 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 Conditions (1) Parame te rs Com. M in. De s cription tP LH tP HL Propagation Delay(2,3) Ax to Bx, Bx to Ax C L = 50pF RL = 500Ω tP ZH tP ZL Bus Enable Time BEx to Ax or Bx C L = 50pF RL = 500Ω R = 500Ω tP HZ tP LZ Bus Disable Time BEx to Ax or Bx M a x. Units 0.25 1 4.5 ns 1 5.0 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. Applications Information Logic Inputs 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 and Hot Plug Information Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to the input/output or control pins. 3 PS8170D 10/01/04 PI3B16244 3.3V, 16-Bit, 4-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 48-pin 240 Mil-Wide Thin Plastic TSSOP (A) 48 .236 .244 1 6.0 6.2 .488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE .004 0.09 .008 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 0.45 .018 0.75 .030 .002 .006 0.05 0.15 .007 .010 0.17 0.27 .319 BSC 8.1 Packaging Mechanical: 48-pin 300 Mil-Wide Plastic SSOP (V) 48 .291 .299 7.39 7.59 .395 .420 10.03 10.67 Gauge Plane .010 0.25 .02 0.51 .04 1.01 1 .620 .630 15.75 16.00 .015 0.381 x 45˚ .025 0.635 .008 0.20 Nom. .110 2.79 Max .025 BSC 0.635 .008 0.20 .0135 0.34 0-8˚ .008 0.20 .016 0.40 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS 4 PS8170D 10/01/04 PI3B16244 3.3V, 16-Bit, 4-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Ordering Information Ordering Code PI3B16244A PI3B16244AE PI3B16244V PI3B16244VE Package Code A A V V Package Type 48-pin TSSOP Pb-free & Green, 48-pin TSSOP 48-pin SSOP Pb-free & Green, 48-pin SSOP 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 PS8170D 10/01/04