QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS
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QS316209, QS3162209
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS 18-Bit Bus-Exchange Switch
DESCRIPTION
QS316209 QS3162209
Enhanced channel with inherent diode bidirectional switches connect inputs outputs Zero propagation delay, zero ground bounce TTL-compatible input output levels Undershoot clamp diodes switch control pins Available 48-pin SSOP TSSOP
APPLICATIONS
Resource sharing Hot-swapping, hot-docking (Application Note AN-13) Crossbar switching isolation Voltage translation 3.3V; Application Note AN-11)
QS316209 provides eighteen highspeed CMOS TTL-compatible bus-exchange switches. resistance QS316209 allows inputs connected outputs without adding propagation delay without generating additional ground bounce noise. device operates 18-bit switch 9-bit exchanger, which provides data exchanging between four signal ports data-select (S0-S2) terminals. QS3162209 adds internal series termination resistor reduce reflection noise high speed applications.
Nine Channels
Figure Functional Block Diagram
Flow Control
MDSL-00138-02 SEPTEMBER 1998
QUALITY SEMICONDUCTOR, INC.
QS316209, QS3162209 Table Description
Name 1An-9An 1Bn-9Bn Function Data select
Figure Configuration (All Pins View)
SSOP (PV), TSSOP (PA)
Table Function Table
Function Disconnect Disconnect iB1, iB2,
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 TA=85°C 0.85 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
SSOP/TSSOP Note: Capacitance guaranteed, production tested. total capacitance while switch please section under "Input Switch Capacitance."
Pins Control Inputs QuickSwitch Channels
Unit
QUALITY SEMICONDUCTOR, INC.
MDSL-00138-02 SEPTEMBER 1998
QS316209, QS3162209 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 Control Inputs VOUT VCC, Switches Min., 0.0V 30mA QS316209 Typ(1) Unit
Min., 2.4V 15mA QS3162209 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, porduction tested.
Figure Typical Resistance 5.0V (QS316209)
(ohms)
(Volts)
Note: QS3162209, shown.
MDSL-00138-02 SEPTEMBER 1998
QUALITY SEMICONDUCTOR, INC.
QS316209, QS3162209 Table Power Supply Characteristics Over Operating Range
-40°C 85°C, 5.0V Symbol ICCQ QCCD Parameter Quiescent Power Supply Current Power Supply Current Control Input HIGH(2) Dynamic Power Supply Current MHz(3) Test Conditions(1) Max., VCC, Max., 3.4V, Max., Pins Open, Control Input Toggling Duty Cycle 0.25 Unit
Notes: conditions shown Min. Max., appropriate values specified under specifications. driven input (VIN 3.4V). 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 iBn, Switch Turn-on Delay iAn,
(2,4)
QS316209 QS3162209 QS316209 QS3162209 QS316209 QS3162209
0.25 1.25
Unit
Notes: Test Circuit Waveforms. Minimums guaranteed, production tested. This parameter guaranteed, production tested. time constant switch alone order 0.25ns QS316209, 1.25ns QS3162209. 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.
Switch Turn-off Delay(2) iAn,
QUALITY SEMICONDUCTOR, INC.
MDSL-00138-02 SEPTEMBER 1998
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