PI3B16245 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, 16-Bit, 2-Port NanoSwitch™ Features Description • • • • • • • Pericom Semiconductor’s PI3B16245 is a 3.3 volt, hot-insertion, 16bit, 2-port bus switch that is pin compatible with the 74 series 16245 16-bit transceiver. Two enable signals (nBE) turn the switches on similar to the enable signals of the 16245. The bus switch creates no additional propagation delay or additional ground bounce noise. Near-Zero propagation delay 5-ohm switches connect inputs to outputs Fast Switching Speed - 4ns max. Pin compatible with 74 series 16245 Operating VCC Range: 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 NC 1A0 1A7 1B0 SW 1B7 SW SW A 1BE B BE 2A0 2A7 SW 48 47 1B1 GND 3 4 46 45 1A1 1B2 5 44 1A2 1B3 VCC 1B4 1B5 GND 1B6 6 7 43 42 1A3 8 9 10 11 41 40 39 38 12 13 37 36 1A7 2B0 2B1 GND 2B2 14 15 16 35 34 33 2A1 2B3 17 18 32 31 2A3 19 20 21 30 29 28 VCC 2A4 2A5 GND 2B6 22 27 2A6 2B7 23 2A7 NC 24 26 25 1B7 2B0 SW 1 2 1BE 1B0 2B7 VCC 2B4 2B5 GND 2BE Truth Table(1) Function nBE nA0-7 Disconnect H Hi- Z Connect L nB0- 7 1A0 GND VCC 1A4 1A5 GND 1A6 2A0 GND 2A2 2BE 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) PS8189E 10/01/04 PI3B16245 3.3V, 16-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 ........................................................................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 De s cription Te s t Conditions (1) 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 RO N Switch ON Resistance(3) VC C = Min., VIN = 0.0V, IO N = 48mA 5 8 VC C = Min., VIN = 2.4V, IO N = 15mA 10 15 Units V 0.8 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 PS8189E 10/01/04 PI3B16245 3.3V, 16-Bit, 2-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 M in. D e s cription Delay(2,3) Com. M a x. tP LH tP HL Propagation 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 1 4.5 tP HZ tP LZ Bus Disable Time BEx to Ax or Bx C L = 50pF ; RL = 500Ω 1 5.0 Units 0.25 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. 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 PS8189E 10/01/04 PI3B16245 3.3V, 16-Bit, 2-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 PS8189E 10/01/04 PI3B16245 3.3V, 16-Bit, 2-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Ordering Information Ordering Code PI3B16245A PI3B16245AE PI3B16245V PI3B16245VE 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/ 2. X = Tape and reel Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 5 PS8189E 10/01/04