PI3B16861 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, 20-Bit, 2-Port NanoSwitch™ Features Description • • • • • Near-Zero propagation delay 5-ohms switches connect inputs to outputs Fast Switching Speed - 5ns (max.) Direct bus connection when switches are ON 32X384 function with flow through pinout make board layout easier • VCC Operating Range: 3.0V to 3.6V • Industrial operating temperature: –40°C to +85°C • Packaging (Pb-free & Green available): – 48-pin 240-mil wide plastic TSSOP (A) – 48-pin 300-mil wide plastic SSOP (V) – 48-pin 150-mil wide plastic BQSOP (B) Pericom Semiconductor’s PI3B16861 is configured as a 3.3 volt, hotinsertion, 20-bit, 2-port bus switch designed with a low On-Resistance (5-ohms) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. The switch is turned ON by the Bus Enable (BEx) input signal. Block Diagram Pin Configuration SW A0 B0 SW A9 B9 BE1 SW A SW A10 B10 SW A19 B BE B19 BE2 Truth Table(1) Function BEx A19-A0 Disconnect H Hi- Z Connect L B19- B0 Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance NC 1 48 VCC A0 2 47 BE1 A1 3 46 B0 A2 4 45 B1 A3 5 44 B2 A4 6 43 B3 A5 7 42 B4 A6 8 41 B5 A7 9 40 B6 A8 10 39 B7 A9 11 38 B8 GND 12 37 B9 NC 13 36 VCC A10 14 35 BE2 A11 15 34 B10 A12 16 33 B11 A13 17 32 B12 A14 18 31 B13 A15 19 30 B14 A16 20 29 B15 A17 21 28 B16 A18 22 27 B17 A19 23 26 B18 GND 24 25 B19 48-Pin A, B, V Pin Description Pin Name BEx 1 De s cription Bus Enable Inputs (Active LOW) A19- A0 Bus A B19- B0 Bus B PS8175E 09/23/04 PI3B16861 3.3V, 20-Bit, 2-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 ........................................................................ 120mA 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 –0.7 –1.2 VC C = Min., VIN = 0.0V, IO N = 48mA 5 8 VC C = Min., VIN = 2.4V, IO N = 15mA 10 RO N Switch ON Resistance(3) Units V 0.8 µA V Ω 15 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 PS8175E 09/23/04 PI3B16861 3.3V, 20-Bit, 2-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Switching Characteristics over Operating Range PI3B16861 Com. Parame te rs Conditions (1) De s cription Delay(2,3) tP LH tP HL Propagation Ax to Bx, Bx to Ax C L = 50pF RL = 500 ohms tP ZH tP ZL Bus Enable Time BEx to Ax or Bx tP HZ tP LZ Bus Disable Time BEx to Ax or Bx CL = 50pF, RL = 500 ohms, R = 500 ohms M in. M a x. Units 0.25 1 4.5 1 5 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. Power Supply Characteristics Parame te rs D e s cription Conditions (1) M in. Type (2) M ax. Q uiescent Power Supply Current VCC = Max. VIN = GN D 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 O pen BE = GN D Control Input Toggling 50% Duty Cycle — — 0.25 ICC 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. 3 PS8175E 09/23/04 PI3B16861 3.3V, 20-Bit, 2-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Applications Information Logic Inputs The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a +3.3V supply, IN may be driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® 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 input/ output or control pins. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd 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 PS8175E 09/23/04 PI3B16861 3.3V, 20-Bit, 2-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 48-pin 150 Mil-Wide Plastic BQSOP (B) 48 .150 .157 3.80 4.00 .228 .244 5.80 6.20 Gauge Plane .020 .029 0.50 0.75 .010 0.25 BSC 1 .014 0.356 REF .386 .394 9.80 10.00 .015 0.381 x 45˚ .008 0.20 Nom Nom .063 1.60 .002 0.05 .009 0.25 5˚ .0157 BSC 0.40 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .079 2.0 Max .0051 .009 0.13 0.23 Ordering Information Ordering Code PI3B16861A PI3B16861AE PI3B16861V PI3B16861VE PI3B16861B PI3B16861BE Package Code A A V V B B Package Type 48-pin TSSOP Pb-free & Green, 48-pin TSSOP 48-pin SSOP Pb-free & Green, 48-pin SSOP 48-pin BQSOP Pb-free & Green, 48-pin BQSOP 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 PS8175E 09/23/04