|Category||Logic => Bus Interface => Bus Oriented Circuits|
|Title||Bus Oriented Circuits|
|Company||Pericom Semiconductor Corporation|
|Datasheet||Download PI5C16214 datasheet
Near-zero propagation delay 5 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: 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 0.8 micron CMOS technology, achieving industry leading speed. The PI5C16214 and PI5C162214 are 3-to-1 bus-select switches designed with a low ON resistance (5) 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.Note: H = High Voltage Level L = Low Voltage Level Z = High Impedance
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature............................................................ to +150°C Ambient Temperature with Power Applied........................... to +85°C Supply Voltage to Ground Potential (Inputs & Vcc Only)..... to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only).. +7.0V DC Input Voltage.................................................................... +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.
Parameters Description VIH VIL II Input HIGH Voltage Input LOW Voltage Input Current Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = 5.5V., VIN 5.5V OR GND VCC = 0V, VIN = VCC IOZH VIK IOS VH RON High Impedance Output Current Clamp Diode Voltage Short Circuit CurrentInput Hysteresis at Control Pins Switch On Resistance
Parameters(5) CIN COFF Description Input Capacitance A/B Capacitance, Switch Off Test Conditions VIN or 3V VIN or 3V Typ 4.5 5.5 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 = 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.
Parameters Description ICC ICCD Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) Test Conditions(1) VCC = Max. VCC = Max. VCC = Max., A and B Pins Open Control Input Toggling 50% Duty Cycle VIN = GND or VCC VIN = 3.4V(3) Min. Typ(2) 0.1 Max. 2.5 0.25 Units µA mA 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 or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
PI5C16214 Vcc 5V ±0.5V Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propagation Ax to Bx, to Ax Bus Enable Time XOE or Bx Bus Disable Time XOE 50pF RL Min. Max. 5.5 ns Units
PI5C162214 Vcc 5V ±0.5V Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propagation Ax to Bx, to Ax Bus Enable Time XOE or Bx Bus Disable Time XOE 50pF RL Min. Max. 5.5 ns Units
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, 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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