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

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

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QS316245
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS QuickSwitch 16-Bit WidebusCompatible Switches
DESCRIPTION
QS316245
Enhanced channel with inherent diode bidirectional switches connect inputs outputs compatible with FCT16245 Flowthrough pinout easy layout Zero propagation delay, zero ground bounce Undershoot clamp diodes switch control inputs TTL-compatible control inputs Available 48-pin SSOP (PV)
QS316245 provides high-speed CMOS TTL-compatible switches (two banks switches each) flow-thru pinout. resistance QS316245 allows inputs connected outputs without adding propagation delay without generating additional ground bounce noise. Output Enable (OEn) signal turns switches similar signal 74'245. QS316245 ideally suited 3.3V translation, switching isolation, insertion. QuickSwitch devices provide order magnitude faster speed than conventional logic devices.
APPLICATIONS
Hot-docking, hot-swapping (Application Note AN-13) Voltage translation 3.3V; Application Note AN-11) switching, isolation Power conservation, clock gating Logic replacement
Figure Functional Block Diagram
MDSL-00129-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316245 Table Description
Name Function Enable
Figure Configuration (All Pins View)
SSOP(PV)
Table Function Table
Function Connect Disconnect
Table Absolute Maximum Rating
Supply Voltage Ground -0.5V +7.0V Switch Voltage Ground -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, VOUT Pins Control Inputs QuickSwitch Channels (Switch OFF) SSOP Unit
Note: Capacitance guaranteed tested. total capacitance while switch please Section under "Input Switch Capacitance."
QUALITY SEMICONDUCTOR, INC.
MDSL-00129-02 JULY 1997
QS316245 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) 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) 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.
(ohms)
Figure Typical Resistance 5.0V
(Volts)
MDSL-00129-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316245 Table Power Supply Characteristics Over Operating Range
-40°C 85°C, 5.0V Symbol ICCQ QCCD Parameter Quiescent Power Supply Current Power Supply Current Input HIGH(2) Dynamic Power Supply Current MHz(3) Test Conditions(1) Max., VCC, Max., 3.4V, Control Input Unit
Max., Pins Open, 0.25 Control Input Toggling Duty Cycle
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 transition. This parameter guaranteed, production tested.
Table Switching Characteristics Over Operating Range
-40°C 85°C, 5.0V CLOAD 50pF, RLOAD unless otherwise noted. Symbol tPLH tPHL Description(1)
Unit
tPZL tPZH tPLZ tPHZ
Data Propagation Delay(2,4) Switch Turn-on Delay An/Bn Switch Turn-off Delay(2) An/Bn
0.25(3)
Notes: Test Circuit Waveforms. This parameter guaranteed, tested. time constant switch alone order 0.25ns 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-00129-02 JULY 1997

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

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