PI5C16214 PI5C162214 (25ohm) 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12-Bit, 3-To-1 Bus-Select Switch Features Product Description Near-zero propagation delay 5ohm switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.2µA typical) ideally suited for notebook applications Industrial operating temperature: 40°C to +85°C Packages available: 56-pin 240-mil wide plastic TSSOP (A) 56-pin 300-mil wide plastic SSOP (V) Pericom Semiconductors PI5C series of BusSwitch circuits are produced in the Companys advanced submicron CMOS technology, achieving industry leading speed. The PI5C16214 and PI5C162214 are 3-to-1 bus-select switches designed with a low ON resistance (5ohm) allowing inputs to be connected directly to outputs. These devices operate as 12-bit bus switches via the data select pins (S0-S2). The PI5C162214 device has a built-in 25-ohm series resistor to reduce noise resulting from reflections, thus eliminating the need for an external terminating resistor. Logic Block Diagram Product Pin Configuration S0 ONE OF TWELVE CHANNELS 1A1 1A1 1B1 1B3 2A1 2B3 1B3 3A1 1B2 3B3 GND 4A1 FLOW CONTROL 4B3 5A1 5B3 6A1 6B3 7A1 7B3 VCC 8A1 GND 8B3 9A1 9B3 10A1 10B3 11A1 11B3 12A1 12B3 S0 S1 S2 Truth Table(1) Function Disconnect A1 to B1 A1 to B2 Disconnect Disconnect A1 to B3 A1 to B1 A1 to B2 S2 L L L L H H H H S1 L L H H L L H H S0 L H L H L H L H A1 Z B1 B2 Z Z B3 B1 B2 Note: 1. H = High Voltage Level L = Low Voltage Level Z = High Impedance 1 56 2 55 3 54 4 53 5 52 6 51 7 50 8 49 9 48 10 47 11 56-Pin 46 A, V 12 45 13 44 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 25 32 26 31 27 30 28 29 S1 S2 1B1 1B2 2B1 2B2 3B1 GND 3B2 4B1 4B2 5B1 5B2 6B1 6B2 7B1 7B2 8B1 GND 8B2 9B1 9B2 10B1 10B2 11B1 11B2 12B1 12B2 Product Pin Description Pin Name SO-S2 xAx xBx 1 I/O I I/O I/O Description Select Inputs Bus A Bus B PS7040A 04/23/99 PI5C16214/162214 3-to-1 Bus-Select 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 = 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 10 µA IOZH High Impedance Output Current 0 ≤A, B ≤VCC VIK Clamp Diode Voltage VCC = 4.5V, IIN = 18mA 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 16214 5 7 ohm 162214 20 28 40 16214 15 162214 20 35 48 16214 14 20 (3) (4) VCC = 4.5V, VIN = 0.0V, ION = 30mA, 64mA VCC = 4.5V, VIN = 2.4V, ION = 15mA VCC = 4 V, VIN = 2.4V, ION = 15mA 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 PS7040A 04/23/99 PI5C16214/162214 3-to-1 Bus-Select 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. PI5C16214 Switching Characteristics over Operating Range PI5C16214 Vcc = 5V ±0.5V Parameters tPLH tPHL 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 = 50pF RL = 500ohm Min. Max. Units 0.25 1.5 6.5 1.5 5.5 ns PI5C162214 Switching Characteristics over Operating Range PI5C162214 Vcc = 5V ±0.5V Parameters tPLH tPHL 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 = 50pF RL = 500ohm Min. Max. Units 1.25 1.5 6.5 1.5 5.5 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. Pericom Semiconductor Corporation 2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com 3 PS7040A 04/23/99