PI3C16861 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port BusSwitch Product Features Product Description • • • • • • • • • Pericom Semiconductor’s PI3C series of Bus Switch circuits are produced using the Company’s advanced submicron CMOS technology, achieving industry leading speed. The PI3C16861 is configured as a 2.5V or 3.3 volt, hot insertion, 20bit, 2-port bus switch designed with a low ON resistance (5 Ohm) 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 (BE) input signal. The device is 5V I/O Tolerant. This device is very useful in switching signals that have high bandwidth (>400 MHz) requirements. Near-zero propagation delay 5-Ohm switches connect inputs to outputs High Bandwidth (>400 MHz) Rail-to-Rail 3.3V or 2.5V switching Permits Hot Insertion High Bandwidth data switching Hot Docking 2.5V Supply Voltage Operation Packages available: – 48-pin 240-mil wide plastic TSSOP (A) – 48-pin 150-mil wide plastic BQSOP (B) – 48-pin 300-mil wide plastic SSOP (V) Logic Block Diagram Product Pin Configuration 48 Pin A, B, V 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 Product Pin Description Pin Name BEx A19-A0 B19-B0 1 Description Bus Enable Inputs (Active LOW) Bus A Bus B PS8424C 01/09/01 PI3C16861 2.5V/3.3V, High Bandwidth, 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Hot Insertion, 20-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature......................................................... –65°C to +150°C 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. Ambient Temperature with Power Applied ........................... –40°C to +85°C Supply Voltage to Ground Potential (Inputs & Vcc Only) ........ –0.5V to +4.6V Supply Voltage to Ground Potential (Outputs & D/O Only) ..... –0.5V to +4.6V DC Input Voltage ................................................................... –0.5V to +5.5V DC Output Current ............................................................................. 120mA Power Dissipation ................................................................................. 0.5W DC Electrical Characteristics (Over Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%) Parameters Description Test Conditions(1) Min. Typ(2) Max. VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level –0.5 IIH Input HIGH Current VCC = Max., VIN = VCC ±1 IIL Input LOW Current VCC = Max., VIN = GND ±1 IOZH High Impedance Output Current 0 ≤A, B ≤VCC ±1 VIK Clamp Diode Voltage VCC = Min., IIN = –18mA RON Switch On Resistance (4) VCC = Min., VIN = 0.0V, ION = 48mA VCC = Min, VIN = 2.4V, ION = 15mA Units 0.8 V µA –0.73 – 1.2 V 5 8 7 15 Ω Capacitance (TA = 25°C, f = 1 MHz) Parame te rs (5) 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 3.5 VIN = 0V 5.0 pF 10.0 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. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. 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. 5. This parameter is determined by device characterization but is not production tested. 2 PS8424C 01/09/01 PI3C16861 2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parame te rs De s cription ICC Quiescent Power Supply Current ∆ICC Supply Current per Input @ TTL HIGH Te s t Conditions M in. VIN = GND or VCC VCC = Max. Typ. M ax. 260 850 Units µA (3) VIN = 3.0V 2.5 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 input only); A and B pins do not contribute to ICC. Switching Characteristics over 3.3V Operating Range PI3C16861 Com. Parame te rs De s cription Conditions M in. M a x. Units (2,3) TPLH TPHL Propagation Delay Ax to Bx, Bx to Ax TPZH TPZL Bus Enable Time BE to Ax or Bx TPHZ TPLZ Bus Disable Time BE to Ax or Bx 0.25 CL = 50pF, RL = 500Ω ns 6.5 1. 5 5.5 Switching Characteristics over 2.5V Operating Range PI3C16861 Com. Parame te rs De s cription TPLH TPHL Propagation Delay (2,3) Ax to Bx, Bx to Ax TPZH TPZL Bus Enable Time BE to Ax or Bx TPHZ TPLZ Bus Disable Time BE to Ax or Bx Conditions M in. M a x. Units 0.25 CL = 50pF, RL = 500Ω 9.8 ns 1.5 8.3 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. 3 PS8424C 01/09/01 PI3C16861 2.5V/3.3V, High Bandwidth, 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Hot Insertion, 20-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 4.0 VCC = 3.3V 3.8V 3.6V 3.1V 2.9V 3.4V 3.2V 2.7V 2.5V 3.0V 2.8V VOUT, (V) 2.3V 2.0 0.0 0.0 1.0 3.0 2.0 4.0 5.0 VIN, (V) Output Voltage vs. Input Voltage over Various Supply Voltages Output Voltage vs. Input Voltage over Various Supply Voltages 48-Pin TSSOP (A) Package 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 .002 .006 0.05 0.15 .007 .010 0.17 0.27 0.45 .018 0.75 .030 .319 BSC 8.1 Ordering Information Part Pin Package Te mpe rature PI3C16861A 48- TSSOP (A) - 40°C to +85°C PI3C16861B 48- BQSOP (B) - 40°C to +85°C PI3C16861V 48- SSOP (V) - 40°C to +85°C 4 PS8424C 01/09/01 PI3C16861 2.5V/3.3V, High Bandwidth, Hot Insertion, 20-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 48-Pin BQSOP (B) Package 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 48-Pin SSOP (V) Package 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 Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 5 PS8424C 01/09/01