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Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 5

Technical content

Features

  • Near-Zero propagation delay 5-ohm switches connect inputs to outputs
  • High Bandwidth (>400 MHz)
  • Permits Hot Insertion.
  • Rail-to-Rail, 3.3V or 2.5V Switching
  • 5V I/O T olerant
  • 2.5V Supply V oltage Operation
  • Packaging (Pb-free Green): 24-pin 150-mil wide plastic QSOP (Q)

Description

Pericom Semiconductor’s PI3C3384 is a 2.5V or 3.3V, high bandwidth 10-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. T wo bus enable signals are provided, one for each of the upper and lower five bits of the two 10-bit buses.

Applications

  • High Bandwidth Data switching Hot Docking Pin Configuration BEA BEB BEA GND VCC BEB Truth Table(1) Function BE A BEB B0-B4 B5-B9 Disconnect H H Hi-Z Hi-Z Connect L H A0-A4 Hi-Z Connect H L Hi-Z A5-A9 Connect L L A0-A4 A5-A9 Note: High V oltage Level, X Don't Care, L Low V oltage Level, Hi-Z High Impedance Pin Description Pin Name Description BEA, BEB Bus Enable Inputs (Active LOW) A9 Bus A B9 Bus B GND Ground VCC Power 11-0008

2.5V/3.3V , High Bandwidth, Hot Insertion 10-Bit, 2-Port, Bus Switch Ambient T emperature with Power Applied to +85°C Supply V oltage to Ground Potential (Input Supply V oltage to Ground Potential (Outputs D/O to +4.6V DC Input V to +5.5V DC Output Current Power Dissipation Note: Stresses greater than those listed under MAXIMUM RA TINGS m ay c ause pe rmanent da mage t o t he devi ce. 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 exten ded periods may af fect reliability. Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Parameters Description Test Conditions(1) Min Typ. (2) Max Units VIH Input HIGH V oltage Guaranteed Logic HIGH Level 2.0 V VIL Input LOW V oltage Guaranteed Logic Low Level –0.5 0.8 IIH Input HIGH Current VCC = Max, VIN = VCC ±1 µA IIL Input LOW Current VCC = Max, VIN = GND ±1 IOZH High-Impedance Output Current 0 ≤ A, B ≤ VCC ±1 VIK Clamp Diode V oltage VCC = Min, IIN = –18mA –0.73 –1.2 V RON Switch On Resistance(3) VCC = Min, VIN = 0.0V ION = 48mA or 64mA 5 7 Ω VCC = Min, VIN = 0.0V ION = 48mA or 64mA 8 15 Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) Description Test Conditions Typ. Units CIN Input Capacitance VIN = 0V 3.5 pFCOFF A/B Capacitance, Switch Off 5.0 CON A/B Capacitance, Switch On 10.0 Notes: For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. T ypical values are at VCC 3.3V, T A 25°C ambient and maximum loading. 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 volt- ages on the two (A,B) pins. This parameter is determined by device characterization but is not production tested. 11-0008

2.5V/3.3V , High Bandwidth, Hot Insertion 10-Bit, 2-Port, Bus Switch Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ. (2) Max. Units ICC Quiescent Power Supply Current VCC = Max, VIN = GND or VCC 260 500 µA DICC Supply Current per Input TTL HIGH VCC = Max, VIN = 3.0V(3) 750 Notes: For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. T ypical values are at VCC 3.3V, +25°C ambient. Per TTL driven input (control inputs only); A and B pins do not contribute to ICC. Switching Characteristics over 3.3V Operating Range Parameters Description Conditions(1) Com. Units Min Max tPLH tPHL Propogation Delay(2,3) Ax to Bx, Bx to Ax CL = 50pF RL = 500-ohm 0.25 nstPZH tPZL Bus Enable T ime BEx to Ax or Bx CL = 50pF RL = 500-ohm R 500-ohm 1.5 6.5 tPHZ tPLZ Bus Disable T ime BEx to Ax or Bx 1.5 5.5 Switching Characteristics over 2.5V Operating Range Parameters Description Conditions(1) Com. Units Min Max tPLH tPHL Propogation Delay(2,3) Ax to Bx, Bx to Ax CL = 50pF RL = 500-ohm 0.25 nstPZH tPZL Bus Enable T ime BEx to Ax or Bx CL = 50pF RL = 500-ohm R 500-ohm 1.5 9.8 tPHZ tPLZ Bus Disable T ime BEx to Ax or Bx 1.5 8.3 Notes: See test circuit and waveforms. This parameter is guaranteed but not tested on Propagation Delays. 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 driv- ing 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. 11-0008

2.5V/3.3V , High Bandwidth, Hot Insertion 10-Bit, 2-Port, Bus Switch 4.0 2.0 0.0 VOUT, (V) VIN, (V) VCC = 3.3V 3.1V 2.9V 2.7V 2.5V 2.3V 3.6V 3.8V 3.4V 3.2V 3.0V 2.8V Output Voltage vs. Input Voltage over Various Supply Voltages Test Circuit Pulse Generator D.U.T. VIN RT VOUT CL 500Ω 500Ω 50pF VCC Open Switch Position Test Disable LOW Enable LOW Disable HIGH Enable HIGH tPD Switch GND GND Open Definitions: CL = Load capacitance (includes jig and probe capacitance) R T = Termination resistance (should be equal to ZOUT of the pulse generator) Enable and Disable Timing Enable Disable 1.6VControl Input Output Normally Low Output Normally High tPZL tPZH Switch Switch GND 1.5V 1.5V tPLZ tPZH 0.3V 0.3V 1.5V VOL VOH 1. Input Control Enable = Low Input Control Device = High 2. Pulse Generator total pulses Rate ≤1.0 MHz; ZOUT≤50-Ohms; tRtF, ≤2.5ns Propagation Delay Same Phase Input Transisiton Opposite Phase Input Transisiton tPLH tPLH tPHL tPHL Output VOH VOL 1.5V 1.5V 1.5V 1.5V1.5V 11-0008

2.5V/3.3V , High Bandwidth, Hot Insertion 10-Bit, 2-Port, Bus Switch

Ordering Information

Ordering Code Package Code Package Description PI3C3384QE Q Pb-Free Green, 24-pin QSOP Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. E = Pb-free and Green Adding an X suffix = T ape/Reel Pericom Semiconductor Corporation • 1-800-435-2336 • www .pericom.com .337 .344 .053 .069.004 .010 SEATING PLANE .025 typical .007 .010 .228 .244 .150 .157 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS 0.635 8.56 8.74 1.35 1.75 5.79 6.20 0.101 0.254 .008 .012 0.203 0.305 3.81 3.99 0.178 0.254 .033 0.84 0.38 .015 x 45˚ Detail A Detail A .008 0.20 MIN. Guage Plane .010 0.254 .041 1.04 REF .016 .035 0.41 0.89 0˚-6˚ .008 .013 0.20 0.33 DESCRIPTION: 24-Pin, 150-Mil Wide, QSOP PACKAGE CODE: Q DOCUMENT CONTROL NO. PD - 1203 REVISION: H DATE: 10/22/07 Note: 1) Controlling dimensions in millimeters 2) Ref: JEDEC MO-137B/AE 3) Dimensions do not include mold flash, protrusions or gate burrs Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335

  • www.pericom.com 07-0475 11-0008