PI5C34X484/P15C34X2484(25ohm) 40-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI5C34X484 PI5C34X2484 (25ohm) 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 40-Bit, 2-Port Bus Switch Product Features Product Description Near-zero propagation delay Low noise, 25Ω version (PI5C34X2484) 5ohm switches connect inputs to outputs (PI5C34X484) Direct bus connection when switches are ON Ultra-low quiescent power (0.2 µA typical) Ideally suited for notebook applications Packages available: 96-pin Low Profile Fine Pitch Ball Grid Array (N96) Pericom Semiconductors PI5C series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry performance. The PI5C34X484 and PI5C34X2484 are 40-bit, 2-port bus switches designed with a low ON resistance allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise. The switches are turned ON by the Bus Enable (BE) input signal. Eight bus enable signals are provided, one for each of the upper and lower five bits of the four 10-bit buses. The PI5C34X2484 is designed with an internal 25ohm resistor reducing noise reflection in high-speed applications. Logic Block Diagram Product Pin Description 1A0 1B0 2A0 2B0 1A4 1B4 2A4 2B4 1A5 1B5 2A5 2B5 1A9 1B9 2A9 2B9 Pin Name 2BEA 1BEA 1BEB 2BEB 3A0 3B0 4A0 4B0 3A4 3B4 4A4 4B4 3A5 3B5 4A5 4B5 3A9 3B9 4A9 4B9 De s cription NA0 - NA9 Bus A NB0 - NB9 Bus B NBEA, NBEB Bus Enable Pins (Active LOW) NGN D Ground NVCC Power Note N = 1 through 4 for each set of 10 bit buses 4BEA 3BEA 4BEB 3BEB Truth Table(1) Function Disconnect Connect Connect Connect NBEA NBEB H L H L H H L L B0-B4 Hi-Z A0-A4 Hi-Z A0-A4 B5-B9 Hi-Z Hi-Z A5-A9 A5-A9 Note: 1. H = High Voltage Level Hi-Z = High Impedance 1 PS8407A 01/19/01 PI5C34X484/P15C34X2484(25ohm) 40-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product ProductPinout Pinoutby byName Name Name 1A0 1B0 1A1 1B1 1A2 1B2 1A3 1B3 1A4 1B4 1A5 1B5 1A6 1B6 1A7 1B7 1A8 1B8 1A9 1B9 Ball Pad A2 A3 A1 B2 C2 B1 C1 D2 D3 D1 D4 D6 C6 D5 C5 B6 A6 B5 A5 A4 Name 2 A0 2 B0 2 A1 2 B1 2 A2 2 B2 2 A3 2 B3 2 A4 2 B4 2 A5 2 B5 2 A6 2 B6 2 A7 2 B7 2 A8 2 B8 2 A9 2 B9 Ball Pad E2 E3 E1 F2 G2 F1 G1 H2 H3 H1 H4 H6 G6 H5 G5 F6 E6 F5 E5 E4 Name 3A0 3B0 3A1 3B1 3A2 3B2 3A3 3B3 3A4 3B4 3A5 3B5 3A6 3B6 3A7 3B7 3A8 3B8 3A9 3B9 Ball Pad J2 J3 J1 K2 L2 K1 L1 M2 M3 M1 M4 M6 L6 M5 L5 K6 J6 K5 J5 J4 Name 4A0 4B0 4A1 4B1 4A2 4B2 4A3 4B3 4A4 4B4 4A5 4B5 4A6 4B6 4A7 4B7 4A8 4B8 4A9 4B9 Ball Pad N2 N3 N1 P2 R2 P1 R1 T2 T3 T1 T4 T6 R6 T5 R5 P6 N6 P5 N5 N4 1 BEA B3 2BE A F3 3 BEA K3 4BE A P3 1 BEB C4 B4 C3 2BE B G4 F4 G3 3 BEB L4 K4 L3 4BE B R4 P4 R3 1VCC 1 GND 2 VCC 2GND 3VCC 3 GND 4 VCC 4GND 2 PS8407A 01/19/01 PI5C34X484/P15C34X2484(25ohm) 40-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pinout[LFBGA [LFBGA (N96) Package] Product Pinout (N96) Package] 1 2 3 4 5 6 A 1A1 1A0 1B0 1B9 1A9 1A8 B 1B2 1B1 1BEA 1VCC 1B8 1B7 C 1A3 1A2 1GND 1BEB 1A7 1A6 D 1B4 1B3 1A4 1A5 1B6 1B5 E 2A1 2A0 2B0 2B9 2A9 2A8 F 2B2 2B1 2BEA 2VCC 2B8 2B7 G 2A3 2A2 2GND 2BEB 2A7 2A6 H 2B4 2B3 2A4 2A5 2B6 2B5 J 3A1 3A0 3B0 3B9 3A9 3A8 K 3B2 3B1 3BEA 3VCC 3B8 3B7 L 3A3 3A2 3GND 3BEB 3A7 3A6 M 3B4 3B3 3A4 3A5 3B6 3B5 N 4A1 4A0 4B0 4B9 4A9 4A8 P 4B2 4B1 4BEA 4VCC 4B8 4B7 R 4A3 4A2 4GND 4BEB 4A7 4A6 T 4B4 4B3 4A4 4A5 4B6 4B5 Product Pin Assignment (Top View) 3 PS8407A 01/19/01 PI5C34X484/P15C34X2484(25ohm) 40-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 Ambient Temperature with Power Applied ............................. 40°C to +85°C Supply Voltage to Ground Potential (Inputs & Vcc Only) ......... 0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ...... 0.5V to +7.0V DC Input Voltage ..................................................................... 0.5V to +7.0V DC Output Current .............................................................................. 120mA Power Dissipation .................................................................................. 0.5W 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. DC Electrical Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 5V ±5%) Parameters Description Test Conditions(1) Min. Typ(2) Max. Units VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 VIL Input LOW Voltage Guaranteed Logic LOW Level 0.5 0.8 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 0.7 1.2 V IOS VH RON Short Circuit Current Input Hysteresis at Control Pins Switch ON Resistance(4) A (B) = 0V, B (A) = VCC 150 5 7 mA mV (3) VCC = Min., VIN = 0.0V, PI5C34X484 100 ION = 48mA PI5C34X2484 20 28 40 VCC = Min., VIN = 2.4V, PI5C34X484 10 15 ION = 15mA PI5C34X2484 20 35 48 V µA ohm Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) Description Test Conditions Typ Max. Units CIN COFF Input Capacitance A/B Capacitance, Switch Off VIN = 0V VIN = 0V 6 6 pF CON A/B Capacitance, Switch On VIN = 0V 8 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 = 5.0V, 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. 4 PS8407A 01/19/01 PI5C34X484/P15C34X2484(25ohm) 40-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description PI5C34X484 PI5C34X2484 Min. Typ(2) Max. Units 0.1 3.0 µA ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC ∆ICC Supply Current per Input @ TTL HIGH VCC = Max., VIN = 3.4V(3) 2.5 mA ICCD Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open BE1 or BE2 = GND Control Input Toggling 50% Duty Cycle 0.25 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 = 5.0V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V, 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. PI5C34X484 Switching Characteristics over Operating Range PI5C34X484 Parameters t PLH t PHL tPZH tPZL tPHZ tPLZ Description Propagation Delay Ax to Bx, Bx to Ax Bus Enable Time BEX to Ax or Bx Bus Disable Time BEx to Ax or Bx (2,3) Conditions(1) Min. Typ Max. CL = 50pF RL = 500ohm 0.25 1.5 6.5 1.5 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 0.25ns 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. 5 PS8407A 01/19/01 PI5C34X484/P15C34X2484(25ohm) 40-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI5C34X2484 Switching Characteristics over Operating Range PI5C34X2484 Parameters t PLH t PHL tPZH tPZL tPHZ tPLZ Description Propagation Delay Ax to Bx, Bx to Ax Bus Enable Time BEX to Ax or Bx Bus Disable Time BEx to Ax or Bx (2,3) Conditions(1) Min. Typ Max. CL = 50pF RL = 500ohm 1.25 1.5 7.5 1.5 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 0.25ns 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. Ordering Information Part Pin - Package D ime ns ions PI5C34X484N 96 - LFBGA (N96) 5.5mm x 13.5mm PI5C34X2484N 96 - LFBGA (N96) 5.5mm x 13.5mm Pericom Semiconductor Corporation 2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com 6 PS8407A 01/19/01