PI5C16210 PI5C162210 (25ohm) 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 20-Bit, 2-Port Bus Switch Product Description: Product Features: Near-zero propagation delay 5ohm or 25ohm switches connect inputs to outputs Direct bus connection when switches are ON 32X384 function with flow through pinout make board layout easier Ultra-low quiescent power (0.2µA typical) ideally suited for notebook applications Industrial operating temperature: 40°C to +85°C Packages available: 48-pin 150-mil wide plastic BQSOP (B) 48-pin 173-mil wide plastic TVSOP (K) 48-pin 240-mil wide plastic TSSOP (A) 48-pin 300-mil wide plastic SSOP (V) Pericom Semiconductors PI5C series of BusSwitch circuits are produced in the Companys advanced sub-micron CMOS technology, achieving industry leading speed. The PI5C16210 is configured as 20-bit, 2-port bus switches designed with a low ON resistance (5ohm) 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 (xOE) input signal. The PI5C162210 device has a built-in 25-ohm series resistor to reduce noise resulting from reflections, thus eliminating the need for an external terminating resistor. Product Pin Configuration Logic Block Diagram 1A1 1B1 1A10 1B10 NC 1A1 1A2 1A3 1A4 1A5 1A6 GND 1A7 1A8 1A9 1A10 2A1 2A2 VCC 2A3 GND 2A4 2A5 2A6 2A7 2A8 2A9 2A10 1OE 2A1 2B1 2A10 2B10 2OE Truth Table(1) Inputs Inputs /Outputs 1O E 2O E 1A,1B 2A,2B L L 1A = 1B 2A = 2B L H 1A = 1B Z H L Z 2A = 2B H H Z Z 1 48 2 47 3 46 4 45 5 44 6 43 7 42 8 41 9 40 10 39 11 38 48-Pin 12 A48 37 13 B48 36 K48 14 V48 35 15 34 16 33 17 18 19 20 21 22 23 24 32 31 30 29 28 27 26 25 1OE 2OE 1B1 1B2 1B3 1B4 1B5 GND 1B6 1B7 1B8 1B9 1B10 2B1 2B2 2B3 GND 2B4 2B5 2B6 2B7 2B8 2B9 2B10 Product Pin Description Pin Name 1OE, 2OE 1A1-1A10, 2A1-2A10 1B1 - 1B10, 2B1 - 2B10 Note: 1. H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance 1 Description Bus Enable Inputs (Active LOW) Bus A Bus B PS8140 09/30/97 PI5C16210/162210 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 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 ................................................................................... 120 mA 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 = 4 to 5V) Parameters Description Test Conditions(1) Min. Typ(2) Max. Units VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V VIL Input LOW Voltage Guaranteed Logic LOW Level 0.5 0.8 V II Input Current VCC = 5.5V., VIN = 5.5V OR GND ±1 µA VCC = 0V, VIN = VCC ±1 µA IOZH High Impedance Output Current 0 ≤ A, B ≤ VCC 10 µA VIK Clamp Diode Voltage VCC = 4.5V, IIN = 18 mA 0.7 1.2 V IOS Short Circuit Current A (B) = 0V, B (A) = VCC 100 mA VH Input Hysteresis at Control Pins 150 mV RON Switch On Resistance 16210 5 7 ohm 162210 20 28 40 16210 15 162210 20 35 48 16210 14 20 (3) (4) VCC = 4.5V, VIN = 0.0V, ION = 30 mA, 64 mA VCC = 4.5V, VIN = 2.4V, ION = 15 mA VCC = 4 V, VIN = 2.4V, ION = 15 mA ohm ohm Capacitance (TA = 25°C, f = 1 MHz) Parameters(5) CIN COFF Description Test Conditions Typ Units Input Capacitance A/B Capacitance, Switch Off VIN = 0V or 3V VIN = 0V or 3V 4.5 5.5 pF 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 = 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. 2 PS8140 09/30/97 PI5C16210/162210 20-Bit, 2-Port Bus Switch 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description Min. ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) ICCD Supply Current per Input per MHz(4) VCC = Max., A and B Pins Open Control Input Toggling 50% Duty Cycle Typ(2) Max. Units 0.1 10 µA 2.5 mA 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. PI5C16210 Switching Characteristics over Operating Range PI5C16210 VCC = 4V Vcc = 5V ±0.5V Parameters t PLH t PHL tPZH tPZL tPHZ tPLZ Description Conditions(1) Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time XOE to Ax or Bx Bus Disable Time XOE to Ax or Bx CL = 50 pF RL = 500ohm Min Max Min Max Unit 0.25 0.25 ns 1.5 6.5 6.3 ns 1.5 5.5 5.5 ns Max Unit 1.25 1.25 ns 1.5 6.5 6.3 ns 1.5 5.5 5.5 ns PI5C162210 Switching Characteristics over Operating Range PI5C162210 Vcc = 5V ±0.5V Parameters t PLH t PHL tPZH tPZL tPHZ tPLZ Description Conditions(1) Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time XOE to Ax or Bx Bus Disable Time XOE to Ax or Bx CL = 50 pF RL = 500ohm Min Max VCC = 4V Min Notes: 1. See test circuit and wave forms. 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 0.25 ns for 50 pF 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. Pericom Semiconductor Corporation 2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com 3 PS8140 09/30/97