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

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

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QS3126
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS Quadruple Switches With Individual Active High Enables
DESCRIPTION
QS3126
Enhanced channel with inherent diode Bidirectional switches connect inputs outputs compatible with 74'126 function Available QSOP (Q), SOIC (S1) Undershoot clamp diodes switch control inputs Zero propagation delay, zero ground bounce
Active high enabling Hot-docking, hot-swapping (Application Note AN-13) Voltage translation 3.3V; Application Note AN-11) Logic replacement (data processing) Power conservation Capacitance reduction isolation (workstations, mass storage) isolation Clock gating
QS3126 provides four high-speed CMOS switches connecting inputs outputs. resistance QS3126 allows inputs connected outputs without propagation delay without generating additional ground bounce noise. Individual active high enables (OE) used turn switches QS3126 ideal signal control switching since device adds noise, ground bounce, propagation delay, significant power consumption system. QuickSwitch devices provide order magnitude faster speed than conventional logic devices.
Figure Functional Block Diagram
MDSL-00126-02 JULY 1997 QUALITY SEMICONDUCTOR, INC.
QS3126 Table Description
Name 1A-4A 1Y-4Y 1OE-4OE Description Switch Enable
Figure Configuration (All Pins View)
QSOP
SOIC (S1)
Table Function Table
Function Connect 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
Pins Control Inputs QuickSwitch Channels (Switch OFF) QSOP, SOIC Unit
Note: Capacitance guaranteed production tested typical values. total capacitance while switch please Section under "Input Switch Capacitance."
QUALITY SEMICONDUCTOR, INC.
MDSL-00126-02 JULY 1997
QS3126 Table Electrical Characteristics Over Operating Range
-40°C 85°C, 5.0V Symbol Parameter Input HIGH Voltage Input Voltage Input Leakage Current (Control Inputs) Off-State Current (Hi-Z) Test Conditions Guaranteed Logic HIGH Control Pins Guaranteed Logic Control Pins VOUT VCC, Switches Min., 2.4V, 15mA Pass Voltage(4) IOUT -5µA Typ(1) Unit
Switch Resistance(2,3) Min., 0.0V, 30mA
Notes: Typical values indicate 5.0V 25°C. diagram explaining procedure measurement, please Section under Electrical Characteristics". guaranteed, production tested. Pass Voltage guaranteed, production tested.
Figure Typical Resistance 5.0V
(ohms)
(Volts)
MDSL-00126-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS3126 Table Power Supply Characteristics
-40°C 85°C, 5.0V Symbol ICCQ QCCD Parameter Quiescent Power Supply Current Power Supply Current(2) Input HIGH Dynamic Power Supply Current MHz(3) Test Conditions(1) Max., VCC, Max., 3.4V, control input Max., Pins Open, Controls Inputs Toggling Duty Cycle 1.25 0.25 Unit
Notes: conditions shown Min. Max., appropriate values specified under specifications. 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 change states. This parameter guaranteed, production tested.
Table Switching Characteristics Over Operating Range
-40°C 85°C, 5.0V CLOAD 50pF, RLOAD unless otherwise noted.
0.25
QS3126 Symbol tPLH tPHL Description(1)
tPZH tPZL tPHZ tPLZ
Data Propagation Delay Switch Turn-on Delay nA/nY Switch Turn-off Delay(2) nA/nY
Unit
(2,3)
Notes: Test Circuit Waveforms. Minimums guaranteed production tested. This parameter guaranteed, production tested. switch contributes propagation delay other than delay resistance switch load capacitance. time constant switch alone order 0.25ns 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-00126-02 JULY 1997

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

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