QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS
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QS3R862
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS 10-Bit Resistance Switch with Active High Enables
DESCRIPTION
QS3R862
FEATURES/BENEFITS
Enhanced channel with inherent diode bidirectional switches connect inputs outputs Zero propagation delay, zero ground bounce Undershoot clamp diodes switch control pins Available QSOP SOIC (SO) packages Active High enable controls Bidirectional signal flow
QS3R862 provides high speed CMOS, TTL-compatible switches. very resistance (2.5) QS3R862 allows inputs connected outputs without adding propagation delay without generating additional ground bounce noise. switches controlled active enable (BE) active High enable (BE) controls. QS3R862 with resistance ideal switching digital buses well hot-plugging, hot-swapping, hot-docking applications. resistance QS3R862 makes ideal PCI, Compact PCI, hot-plugging applications.
APPLICATIONS
Hot-swapping hot-docking applications (Application Note AN-13) resistance Compact Applications Voltage translation 3.3V; Application Note AN-11) Power conservation Capacitance reduction isolation Applications requiring resistance active high enabling isolation Clock gating
Figure Functional Block Diagram
MDSL-00246-02 NOVEMBER 1998
QUALITY SEMICONDUCTOR, INC.
QS3R862 Table Description
Name A0-A9 B0-B9 Function Active Enable Active High Enable QSOP, SOIC (SO)
Figure Configuration (All Pins View)
Table Function Table
A0-A9 Hi-Z Hi-Z B0-B9 Hi-Z Function Disconnect Disconnect Connect Disconnect
Table Absolute Maximum Ratings
Supply Voltage Ground -0.5V 7.0V Switch Voltage -0.5V 7.0V Input Voltage -0.5V 7.0V Input Voltage (for pulse width 20ns) -3.0V Output Current Max. Sink Current/Pin 120mA Maximum Power Dissipation watts TSTG Storage Temperature -65° 150°C
Note: ABSOLUTE MAXIMUM CONTINUOUS RATINGS those values beyond which damage device occur. Exposure these conditions conditions beyond those indicated adversely affect device reliability. Functional operation under absolute-maximum conditions implied.
Table Capacitance
25°C, 1MHz, Pins Control Inputs QuickSwitch Channels (Switch OFF) QSOP, SOIC Unit
Note: Capacitance characterized production tested. total capacitance while switch please Section under "Input Switch Capacitance."
QUALITY SEMICONDUCTOR, INC.
MDSL-00246-02 NOVEMBER 1998
QS3R862 Table Electrical Characteristics Over Operating Range
-40°C 85°C, 5.0V ±10% Symbol Parameter Input HIGH Voltage Input Voltage Input Leakage Current (Control Inputs) Off-State Current (Hi-Z) Switch Resistance(2) Switch Resistance(2) Pass Voltage(3) Test Conditions Guaranteed Logic HIGH Control Inputs Guaranteed Logic Control Inputs VOUT VCC, Switches Min., 0.0V, 30mA Min. 2.4V, 15mA IOUT -5µA Typ(1) 0.01 0.01 Unit
Notes: Typical values indicate 5.0V 25°C. diagram explaining procedure measurement, please Section under Electrical Characteristics." Max. value guaranteed, production tested. Pass Voltage guaranteed production tested.
Figure Typical Resistance 5.0V
(ohms)
(Volts)
MDSL-00246-02 NOVEMBER 1998
QUALITY SEMICONDUCTOR, INC.
QS3R862 Table Power Supply Characteristics Over Operating Range
-40°C 85°C, 5.0V ±10% Symbol ICCQ QCCD Parameter Quiescent Power Supply Current Power Supply Current Input HIGH Dynamic Power Supply Current MHz(4) Test Conditions(1) Max., VCC, Max., 3.4V(3), Control Input Max., Pins Open, Inputs Toggling Duty Cycle Typ(2) 0.25 Unit
Notes: conditions shown Min. Max., appropriate values specified under specifications. Typical Values 5.0V, 25°C Ambient. driven input (VIN 3.4V, control inputs only). pins contribute ICC. This current applies control inputs only represents current required switch internal capacitance specified frequency. inputs generate significant currents they transition. This parameter guaranteed, production tested.
Table Switching Characteristics Over Operating Range
-40°C 85°C, 5.0V ±10% CLOAD 50pF, RLOAD unless otherwise noted. Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ Description(1) Data Propagation Delay(2,4) Switch Turn-on Delay Switch Turn-off Delay(2)
Unit
0.12(3)
Notes: Test Circuit Waveforms. Minimums guaranteed production tested. This parameter guaranteed, production tested. time constant switch alone order 0.12ns QS3R862 50pF. switch contributes propagation delay other than delay resistance switch load capacitance. Since this time constant much smaller than rise/fall times typical driving signals, adds very little propagation delay system. Propagation delay switch when used system determined driving circuit driving side switch interaction with load driven side.
QUALITY SEMICONDUCTOR, INC.
MDSL-00246-02 NOVEMBER 1998
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