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Details, datasheet, quote on part number: PI3VT3245L
 
 
Part numberPI3VT3245L
CategoryInterface and Interconnect => Mux/Demux/Switch Digital Bus
Description3.3V to 2.5V / 2.5V to 1.8V, 8-bit, 2-Port, Low Voltage Translator Bus Switch
CompanyPericom Semiconductor Corporation
DatasheetDownload PI3VT3245L datasheet
Request For QuoteFind where to buy PI3VT3245L
 


 
Specifications, Features, Applications

Near zero propagation delay Low ON resistance switches connect inputs to outputs 2.5V Supply Voltage Operation or 1.8V switching Packages available: 20-pin, 150 mil wide plastic QSOP (Q) 20-pin, 173 mil wide plastic TSSOP (L)

Pericom Semiconductors PI3VT series of logic circuits are produced using the Companys advanced submicron CMOS technology, achieving industry leading performance. The 8-bit, 2-port bus switch designed with a low ON resistance (5 ohms). The switches are turned ON or enabled by the Bus Enable (BE) input signal. Given a 3.3V supply and an input voltage of 3.3V, the switch translates to an output voltage of 2.5V. Similarly, when operated with a 2.5V supply and given 2.5V inputs, the device translates the outputs to 1.8V.

Applications
to 2.5V level shifting (voltage translation) to 1.8V level shifting (voltage translation)
Notes: H = High Voltage Level L = Low Voltage Level Hi-Z = High Impedance
Pin Name B0- B7 VCC GND e s cription Bus Enable Input (Active Low) Bus A Bus B Power Ground

(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature........................................................ to +150C Ambient Temperature with Power Applied......................... to +85C Supply Voltage to Ground Potential......................................... +4.6V DC Input Voltage.................................................................. +5.5V 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.

Parame te rs VIH VIL IIH IIL IOZH De s cription Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC = Max., VIN = GND A, B VCC = Min., VIN = 0.0V, ION = 8mA RON Switch On Resistance VCC = Min., VIN = 1.7V, ION = 8mA VCC = 2.3V, VIN = 0.0V, ION = 8mA VCC = 2.3V, VIN = 1.3V, ION 8mA VP Pass Voltage VIN = VCC = 3.3V, IOUT = 5A VIN = VCC = 2.5V, IOUT 5A M in. Typ.(2) M ax. VCC V A Units V

Parame rs (5) CIN O FF CON De s cription Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On VIN s t Conditions Typ. 10.0 pF Units

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 = 25C 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.

Parame te rs ICC De s cription Quiescent Power Supply Current Quiescent Current per Input HIGH s t Conditions (1) VIN = GND or VCC = Max. VIN

Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC 3.3V, +25C ambient. 3. Per driven input (control input only); A and B pins do not contribute to ICC.

Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Propagation to Bx Bus Enable Time or Bx Bus Disable Time = 500 ohms = 500 ohms = 500 ohms 1.5 Com M in. M ax. 8.3 ns Units

Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ De s cription Propagation to Bx Bus Enable Time or Bx Bus Disable Time = 500 ohms = 500 ohms = 500 ohms 1.5 Com M in. M ax. 8.3 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.




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