QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS

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QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS

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QS34XR800
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS 32-Bit Resistance QuickSwitch with Precharged Outputs
DESCRIPTION
QS34XR800
FEATURES/BENEFITS
bidirectional switches connect inputs outputs Zero propagation delay Undershoot clamp diodes switch control pins Outputs precharge voltage minimize signal distortion during live insertion TTL-compatible input output levels Zero ground bounce Flow-through pinout easy layout Available 80-pin Millipaq (Q3)
QS34XR800 32-bit high-speed CMOS switch controlled four enable (ONx) input flow-through pinout. When LOW, switch port connected port When HIGH, switch between port port open port precharged bias voltage. resistance (2.5) QS34XR800 allows inputs connected outputs without adding propagation delay without generating additional noise. QS34XR800 also precharges port user-selectable bias voltage minimize live-insertion noise which uselful applications.
Figure Functional Block Diagram
VBIAS1
VBIAS2
VBIAS3 VBIAS4
MDSL-00342-01 NOVEMBER 1998
QUALITY SEMICONDUCTOR, INC.
QS34XR800 Figure Configuration (All Pins View)
VBIAS1 VBIAS2 VBIAS3 VBIAS4
Table Description
Name A0-A31 B0-B31 VBIASX Function Switch Enable Bias Voltage
Table Function Table
Bm-Bn Am-An VBIASX Function Connect Precharge
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 70°C watts TSTG Storage Temperature -65°C 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.
QUALITY SEMICONDUCTOR, INC.
MDSL-00342-01 NOVEMBER 1998
QS34XR800 Table Electrical Characteristics Over Operating Range
Commercial: -40°C 85°C, 5.0V ±10% Symbol VBIAS Parameter Input HIGH Voltage Input Voltage Bias Voltage Bias Current Input Leakage Current (Control inputs) Off-State Current (Hi-Z) Switch Resistance(2) Switch Resistance(2) Test Conditions Guaranteed Logic HIGH Control Inputs Guaranteed Logic Control Inputs HIGH 4.5V, VBIAS 2.4V, VOUT HIGH VOUT Min., 0.0V 30mA Min., 2.4V 0.25 Typ(1) Unit
Notes: Typical values indicate 5.0V 25°C. During input/output leakage, testing pins HIGH state. diagram explaining procedure measurement, please Section1 under Electrical Characteristics." Max. value guaranteed characterization, production tested.
Figure Typical Resistance 5.0V
(Volts)
(ohms)
MDSL-00342-01 NOVEMBER 1998
QUALITY SEMICONDUCTOR, INC.
QS34XR800 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, Data Inputs GND, Control 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 design, tested. Values these conditions examples formula. These limits guaranteed tested.
Table Switching Characteristics Over Operating Range
Commercial: -40°C 85°C, 5.0V ±10% CLOAD 50pF, RLOAD unless otherwise noted.
0.12(3)
Symbol tPLH tPHL
Description(1)
tPZL tPZH tPLZ tPHZ
Data Propagation Delay(2,3) Switch Turn-on Delay Switch Turn-off Delay(2)
QS3R800
Unit
Notes: Test Circuit Waveforms. Minimums guaranteed tested. This parameter guaranteed design tested. switch contributes propagation delay other than delay resistance switch load capacitance. time constant switch alone order 0.12ns 50pF. 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-00342-01 NOVEMBER 1998

QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS

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