PI3C16226 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, High-Bandwidth, 12-Bit to 24-Bit, Mux/Demux Bus Switch Product Features Product Description · · · · · · · · · Pericom Semiconductors PI3C series of bus switch circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance. RON is 9-Ohm typical Pulldown on B ports Industrial Operation Temperature: 40ºC to +85ºC Near Zero propagation delay Switching speed: 4.5ns max. Channel on capacitance: 9pF max. (3.3V operation) VCC Operating Range: +2V to +3.6V >100 MHz bandwidth Package available: 40-pin BQSOP (B) PI3C16226 is a 12-to 24-bit multiplexer/demultiplexer bus switch. Industry leading advantages include a zero propagation delay of 500ps, resulting from 9-ohm channel resistance and low I/O capacitance. A1 port demultiplexes to either 1B or 2B and the switch is bidirectional. Application Provides Memory Module switching. Logic Block Diagram Pin Description 1B1 1A1 1A1 2B1 2B2 3A1 GND 4B1 4B2 5A1 6B1 6B2 7A1 V CC 8B1 8B2 9A1 10 B 1 10 B 2 11 A 1 12 B 1 12 B 2 1B2 12B1 12A1 12B2 SEL Function SEL nA1 to nB1 L nA1 to nB2 H 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40-Pin B 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 SEL 1B 1 1B 2 2A 1 3B 1 3B 2 4A 1 5B 1 5B 2 6A 1 7B 1 7B 2 8A 1 GND 9B 1 9B 2 10A 1 11B 1 11B 2 12A 1 PS8457D 03/13/01 PI3C16226 3.3V, High Bandwidth, 12-Bit to 24-Bit, Mux/Demux Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Above which the 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 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 I/O Voltage ........................................................................ 0.5V to +5.5V DC Output Current .............................................................................. 120mA Power Dissipation ................................................................................... 0.5W DC Electrical Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 3.3V ±10%) Parame te rs Te s t Conditions (1) D e s cription M in. Typ.(2) M ax. Units VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LO W Voltage Guaranteed Logic LO W Level 0.5 0.8 IIH Input HIGH Current VC C = Max., VIN = VC C ±1 IIL Input LO W Current VC C = Max., VIN GND ±1 VIK Clamp Diode Voltage VC C = Min., IIN = 18mA 0.73 1.2 V B port pulldown Current VC C = Min., VO = VC C SEL = High for B1 SEL = Low for B2 2.5 3.8 mA VC C = Min., VIN = 0.0V IO N = 48mA or 64mA 9 12 VC C = Min., VIN = 2.4V IO N = 15mA IO RO N Switch O n Resistance(4) = V µA Ω 16 23 Capacitance (TA = 25°C f = 1 MHz) Parame te rs (5) D e s cription CIN Input Capacitance CON A/B Capacitance, Switch O n Te s t Conditions VIN = 0V Typ. M ax. 3.5 9.3 11 Units pF 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 PS8457D 03/13/01 PI3C16226 3.3V, High Bandwidth, 12-Bit to 24-Bit, Mux/Demux Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parame te rs De s cription Te s t Conditions (1) M in. Typ.(2) M ax. Units µA ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC 260 850 ∆ICC Supply Current per Input @ TTL HIGH VCC = Max., VIN = 3.0V(3) 750 Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for 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. PI3C16226 Switching Characteristics Over Operating Range Parame te rs De s cription Conditions (1) tPLH tPHL Propogation Delay(2,3) Ax to Bx, Bx to Ax CL = 25pF RL = 500Ω tPZH tPZL Bus Enable Time SEL to Ax or Bx tPHZ tPLZ Bus Disable Time SEL to Ax or Bx CL = 25pF RL = 500Ω R = 500Ω Com. M in. M ax. 0.5 1.3 6.5 1.3 5.5 Units 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 0.5ns for 25pF 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 PS8457D 03/13/01 PI3C16226 3.3V, High Bandwidth, 12-Bit to 24-Bit, Mux/Demux Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 40-Pin BQSOP (B) Package X.XX X.XX DENOTES DIMENSION IN MILLIMETERS Notes: 1. Controlling dimensions in millimeters 2. Ref.: JEDEC MO - 154 BB Ordering Information Part Pin - Pack age PI3C16226B 40 - BQ SO P (B) Te mpe rature 40°C to + 85°C Pericom Semiconductor Corporation 2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com 4 PS8457D 03/13/01