PI5C16215C 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 20-Bit, Hot Insertion, BusSwitch with Precharged Outputs & Undershoot Protection Product Features Product Description Pericom Semiconductors PI5C series of logic circuits are produced using the companys advanced submicron CMOS technology. Undershoot protection up to 1.5V, 25ns width Near zero propagation delay 5 Ohm switches connect between two ports Fast switching speed: 4.5ns max. Permits hot insertion Isolation during power-off conditions B-Port outputs are precharged by bias voltage to minimize signal distortion during live insertion. Package options include: - 48-pin 150-mil wide plastic BQSOP (B) - 48-pin 240-mil wide plastic TSSOP (A) The PI5C16215C provides 20-bits of high-speed bus switching. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device also precharges the B-port to a user-selectable bias voltage (BIASV) to minimize liveinsertion noise. The device incorporates an internal charge pump to handle input undershoot of up to 1.5V and 25ns width. The device is organized as dual 10-bit bus switches with individual output-enable (OE) inputs. When OE is low, the corresponding 10-bit bus switch is on and port A is connected to port B. When OE is high, the switch is open, a high-impedance state exists between the two ports, and port B is precharged to BIASV through the equivalent of a 10-k ohm resistor. Logic Block Diagram 1 1A1 2 46 SW To ensure the high-impedance state on power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver connected to OE. BIASV 1B1 Product Pin Configuration 1A10 12 1OE 36 SW BIASV 1A1 1A2 1A3 1B10 48 1A 4 1A 5 1A 6 2A1 13 35 SW GND 1A7 2B1 1A8 1A 9 2A10 24 25 SW 1A10 2B10 2A1 2A 2 2OE VCC 47 2A 3 GND 2A 4 2A 5 2A 6 A B 2A 7 2A 8 2A 9 2A 10 OE 1 1 2 3 4 5 6 7 8 9 10 48 1OE 47 46 2O E 45 44 43 1B2 1B3 1 B4 42 41 1B5 40 39 38 1 B6 11 12 48-Pin 37 A,B 36 13 14 35 15 34 16 33 17 32 18 31 19 30 20 29 21 22 23 24 1 B1 GND 1B7 1B 8 1 B9 1 B10 2B1 2B2 2B 3 GND 2B4 2B 5 2B6 28 27 26 2B 7 25 2B10 2B 8 2B9 PS8369B 12/15/01 PI5C16215C 20-Bit, Hot Insertion, BusSwitch with Precharged Outputs & Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Absolute Maximum Ratings Over Free-Air Temperature Range (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. Supply Voltage Range ........................................ 0.5V to +7V DC Input Voltage(1) ...................................................... 0.5V to +7V Input Clamp Current, IIK (VI <0) ................................. 50mA DC Output Current ....................................................... 120mA Power Dissipation(2) .................................................................... 0.5W Notes: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The maximum package power dissipation is calculated using a junction temperatue of 150°C and a board trace length of 750 mils. Recommended Operating Conditions (Over Recommended Operating Free-air Temperature Range) Parame te r De s cription M in. M ax. VCC Supply voltage 4 5.5 BIASV Supply voltage 1.3 VCC VIH High- Level input voltage VIL Low- level input voltage TA Operating free- air temperature Units V 2 0.8 40 85 °C Electrical Characteristics (Over Recommended Operating Free-air Temperature Range) Parame te r Te s t Conditions VIK VCC = 4.5V II = 18mA II VCC = 5.5V VI = 5.5V or GND IO VCC = 4.5V BIASV = 2.4V ICC VCC = 5.5V ∆ICCE Control pins VCC = 5.5V Control pins VI =3V or 0 CI CO (OFF) VO =3V or 0 VCC = 4V rON* VCC = 4.5V VO = 0 IO = 0 M in. Typ= M ax. Units 1.8 V ±5 µA 0.25 mA VI = VCC or GND One input at 3.4V, Other at VCC or GND 100 µA 2.5 mA 3.5 Switch Off pF 4.5 VI = 2.4V II = 15mA 9 20 VI = 0, II = 64mA 5.5 8 VI = 0, II = 30mA 5 8 VI = 2.4V II = 15mA 9 15 ohm Notes: * Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by the lower of the voltages of the two (A or B) terminals. E This is the increase in supply current for each input that is at the specified TTL voltage level rather the VCC or GND. = All typical values are at VCC = 5V, TA = 25°C. 2 PS8369B 12/15/01 PI5C16215C 20-Bit, Hot Insertion, BusSwitch with Precharged Outputs & Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Truth Table OE Function L A port = B port H A port = Z, B Port = BIASV Switching Characteristics (Over Recommended Operating Free-air Temperature Range, CL = 50pF) Parame te r Te s t Conditions tPD tPZH BIASV = GND tPZL BIASV = 3V tPHZ BIASV = GND tPLZ BIASV = 3V From (Input) To (Output) A or B B or A ON A or B ON A or B VCC = 5V ± 0.5V M in. M ax. VCC = 4V M in. Units M ax. 0.25 0.25 3.1 5 6 3.0 5 6 2.0 5 5.5 3 5 5.5 ns Notes: 1. This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical on-state resistance of the switch and a load capacitance of 50pF, when driven by an ideal voltage source (zero output impedance). Parameter Measurements 7V S1 500ohm From Output Under Test CL = 50pF (See note 1) Open GND 500ohm Output Control (Low Level Enabling) LOAD CIRCUIT 3V Output Waveform 1 S1 at 6V (see Note 2) 1.5V 1.5V Input 0V tPLH tPHL Output Waveform 2 S1 at Open (see Note 2) VOH Output 1.5V 1.5V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES Te s t S1 tpd O pen tPLZ/tPZL 7V tPHZ/tPZH O pen 3V 1.5V 1.5V 0V tPZL tPLZ 3.5V 1.5V VOL +0.3V tPZH VOL tPHZ VOH 1.5V VOH -0.3V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES Notes: 1. CL includes probe and jig capacitance. 2. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control. 3. All input pulses are supplied by generators having the following characteristics: PRR<10MHz, ZO = 50Ω, tr ≤ 2.5ns, tf ≤ 2.5ns. 4. The outputs are measured one at a time with one transition per measurement. 5. tPLZ and tPHZ are the same as tdis. 6. tPZL and tPZH are the same as ten. 7. tPLH and tPHL are the same as tpd. 3 PS8369B 12/15/01 PI5C16215C 20-Bit, Hot Insertion, BusSwitch with Precharged Outputs & Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 48-pin 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 .0051 .009 0.13 0.23 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .079 2.0 Max 48-pin 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 .007 .010 0.17 0.27 .002 .006 0.05 0.15 4 0.45 .018 0.75 .030 .319 BSC 8.1 PS8369B 12/15/01 PI5C16215C 20-Bit, Hot Insertion, BusSwitch with Precharged Outputs & Undershoot Protection 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 48-pin 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 Part Pin - Package Width PI5C16215CB 48 - BQSOP (B48) 150- mil PI5C16215CA 48 - TSSOP (A48) 240- mil 0-8˚ .008 0.20 .016 0.40 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Ordering Information Applications Information Logic Inputs The logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a +5.0V supply, IN may be driven low to 0V and high to 5.5V. Driving IN Rail-to-Rail® minimizes power consumption. Power-Supply Sequencing Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying signals to the bias voltage pin and the input/output or control pins. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 5 PS8369B 12/15/01