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| Preliminary FSLV34X245 32-Bit Bus Switch (Preliminary) October 2001 Revised October 2001 FSLV34X245 32-Bit Bus Switch (Preliminary) General Description The Fairchild Switch FSLV34X245 provides 32-bits of highspeed CMOS bus switching in a standard 245 pin-out. The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. The device is organized as an 32-bit switch. When OE is LOW, the switch is ON and Port A is connected to Port B. When OE is HIGH, the switch is OPEN and a High-Impedance state exists between the two ports. Features s 5 switch connection between two ports s Minimal propagation delay through the switch s Low lCC s Zero bounce in flow-through mode s Low Power-Off leakage currents s 32-bit version of FSLV3245 s Packaged in "slim line" 80-lead package Ordering Code: Order Number FSLV34X245QSP Package Number MQA80A Package Description 80-Lead, QVSOP, JEDEC MO-154, 0.150" Wide Connection Diagram Logic Diagram Pin Descriptions Pin Name OE A B NC Description Bus Switch Enable Bus A Bus B No Connect Truth Table Input OE L H Function Connect Disconnect (c) 2001 Fairchild Semiconductor Corporation DS500018 www.fairchildsemi.com Preliminary FSLV34X245 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC ) DC Switch Voltage (VS) DC Input Voltage (VIN) (Note 2) DC Input Diode Current (lIK) VIN < 0V DC Output (IOUT ) Sink Current DC VCC/GND Current (ICC/IGND) Storage Temperature Range (TSTG) -0.5V to +4.6V -0.5V to +4.6V -0.5V to +4.6V -50 mA 128 mA Recommended Operating Conditions (Note 3) Power Supply Operating (VCC) Control Input Voltage Switch Input Voltage Output Voltage (VOUT) Input Rise and Fall Time (tr, tf) Switch Control Input Switch I/O Free Air Operating Temperature (TA) 0 ns/V to 4 ns/V 0 ns/V to DC 3.0V to 3.6V 0V to 3.6V 0V to 3.6V 0V to 3.6V +/- 100 mA -65C to +150 C -40 C to +85 C Note 1: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum rating. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 2: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. Note 3: Unused control inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VIK VIH VIL II IOFF IOZ RON Parameter Clamp Diode Voltage HIGH Level Input Voltage LOW Level Input Voltage Input Leakage Current OFF-STATE Leakage Current OFF-STATE Leakage Switch On Resistance (Note 5) VCC (V) 3.0 2.7 - 3.6 2.3 - 2.7 2.7 - 3.6 2.3 - 2.7 3.6 0 0 3.6 3.0 3.0 3.0 3.0 2.3 2.3 2.3 2.3 ICC ICC Quiescent Supply Current Increase in ICC per Input 3.6 3.6 5 5 10 5 5 10 2.0 1.7 0.8 0.7 1.0 10 10.0 1 7 7 15 20 8 8 15 20 3 300 TA = -40 C to +85 C Min Typ (Note 4) Max -1.2 Units V V V A A A A A A 0 VIN 3.6V VIN = 3.6V 0 A, B VCC 0.0V A, B 3.6V VIN = 0V, IIN = 64 mA VIN = 0V, IIN = 30 mA VIN = 2.4V, IIN = 15 mA VIN = 3.0V, IIN = 15 mA VIN = 0.0V, IIN = 64 mA VIN = 0.0V, IIN = 30 mA VIN = 1.7V, IIN = 15 mA VIN = 2.3V, IIN = 15 mA VIN = VCC or GND, IOUT = 0 One Input at 3.0V Other Inputs at VCC or GND Note 4: Typical values are at VCC = 3.3V and T A = +25C Note 5: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the voltages on the two (A or B) pins. Conditions IIN = -18 mA www.fairchildsemi.com 2 Preliminary FSLV34X245 AC Electrical Characteristics TA = -40C to +85C RU = RD = 500 Symbol Parameter VCC = 3.3 3.0V CL = 50 pF Min tPHL, tPLH tPZH, tPZL Propagation Delay Bus to Bus (Note 6) Output Enable Time 1.0 Max 0.25 4.5 1.0 VCC = 2.5V 0.2V CL = 30 pF Min Max 0.15 4.8 ns ns VI = OPEN VCC = 3.3V, VI = 6V for tPZL VI = GND for tPZH VCC = 2.5V, VI = 2 x VCC for tPZL VI = GND for tPZH tPHZ, tPLZ Output Disable Time 1.0 4.5 1.0 4.8 ns VCC = 3.3V, VI = 6V for tPLZ VI = GND for tPHZ VCC = 2.5V, VI = 2 x VCC for tPLZ VI = GND for tPHZ Note 6: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On Resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage source (zero output impedance). Units Conditions Figure Number Figures 1, 2 Figures 1, 2 Figures 1, 2 Capacitance Symbol CIN CI/O OFF (Note 7) Parameter Typ 3 7 6 14 Max Units pF pF Conditions VCC = 3.3V VCC, OE = 3.3V Control Pin Input Capacitance Input/Output Capacitance "OFF - State" Note 7: TA = +25C, f = 1 Mhz, Capacitance is characterized but not tested. 3 www.fairchildsemi.com Preliminary FSLV34X245 AC Loading and Waveforms Note: CL includes load and stray capacitance Note: Input PRR = 1.0 MHz, tW = 500 ns Test tPD tPLZ/tPZL tPHZ/tPZH Switch Open VI GND FIGURE 1. AC Test Circuit VCC Symbol VMI VMO VMVO VI VCCV tr/tf 3.3V 0.3V 1.5V 1.5V 0.3V 6.0V 3.0 2 ns FIGURE 2. AC Waveforms 2.5V 0.2V VCC/2 VCC/2 0.15V 2 x VCC VCC 2.5 ns www.fairchildsemi.com 4 Preliminary FSLV34X245 32-Bit Bus Switch (Preliminary) Physical Dimensions inches (millimeters) unless otherwise noted 80-Lead, QVSOP, JEDEC MO-154, 0.150" Wide Package Number MQA80A Technology Description The Fairchild Switch family derives from and embodies Fairchild's proven switch technology used for several years in its 74LVX3L384 (FST3384) bus switch product. Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 5 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com www.fairchildsemi.com |
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