QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS
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QS32X861, QS32X2861
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS 20-Bit Switch With Flow-Thru Pinout
DESCRIPTION
QS32X861 QS32X2861
Enhanced channel with inherent diode bidirectional switches connect inputs outputs Zero propagation delay, zero ground bounce QS32X2861 version noise Undershoot clamp diodes switch control pins Available 48-pin QVSOP® (Q1)
APPLICATIONS:
Hot-swapping, hot-docking (Application Note AN-13) Voltage translation 3.3V; Application AN-11) Power conservation Capacitance reduction isolation isolation Clock gating
QS32X861 QS32X2861 provide sets high-speed CMOS, TTL-compatible, switches. resistance QS32X861 allows inputs connected outputs without adding propagation delay without generating additional ground bounce noise. QS32X2861 adds internal series termination resistor each switch reduce reflection noise high-speed applications. Enable (BEn) signal turns switches '861 family switches ideal switching digital buses, well plug buffering 3.3V conversion.
Figure Functional Block Diagram
MDSL-00143-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS32X861, QS32X2861 Table Description
Name A0-A19 B0-B19 Function Enable
Figure Confiruration (All Pins View)
QVSOP (Q1)
Table Function Table
A0-A9 B0-B9 B0-B9 A10-A19 B10-B19 B10-B19 Function Connect Connect Connect Disconnect
Table Absolute Maximum Ratings
Supply Voltage Ground -0.5V +7.0V Switch Voltage -0.5V +7.0V Input Voltage -0.5Vto+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: ABSOULUTE 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 QVSOP
Note: Capacitance characterized production tested. total capacitance while switch please Section under "Input Switch Capacitance."
Pins Control Inputs QuickSwitch Channels (Switch OFF)
Unit
QUALITY SEMICONDUCTOR, INC.
MDSL-00143-02 JULY 1997
QS32X861, QS32X2861 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
Test Conditions Guaranteed Logic HIGH Control Inputs Guaranteed Logic Control Inputs VOUT VCC, Switches Min., 0.0V 30mA Min., 2.4V 15mA 32X861 32X2861 32X861 32X2861
Typ(1) 0.01 0.01
Unit
Switch Resistance(2) Pass Voltage(3)
IOUT -5µA
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 5.00 (QS32X861)
(ohms)
(Volts)
Note: QS32X2861, shown
MDSL-00143-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS32X861, QS32X2861 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(3) Dynamic Power Supply Current MHz(4) Test Conditions(1) Max., VCC, Max., 3.4V, Control Input Max., Pins Open, 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 CLOAD 50pF, RLOAD unless otherwise noted. Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ Description(1) Data Propagation Delay(2,3) to/from Switch Turn-on Delay An/Bn Switch Turn-off Delay(2) An/Bn QS32X861 QS32X2861 QS32X861 QS32X2861 QS32X861 QS32X2861
0.25 1.25
Unit
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 QS32X861 1.25ns QS32X2861 50pF load. 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.
QuickSwitch, QVSOP registered trademarks Quality Semiconductor, Inc.
QUALITY SEMICONDUCTOR, INC.
MDSL-00143-02 JULY 1997
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