QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS
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QS316211, QS3162211 ADVANCE INFORMATION
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS 24-Bit Switch
DESCRIPTION
QS316211 QS3162211 ADVANCE INFORMATION
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 56-pin SSOP (PV) TSSOP (PA) QS3162211 version noise
QS316211and QS3162211 each provide twenty-four high-speed CMOS TTL-compatible switches. resistance QS316211 allows inputs connected outputs without adding propagation delay without generating additional ground bounce noise. QS3162211 adds internal series termination resistor each switch reduce reflection noise high speed applications. device operates 24-bit switch. When low, connected 1Bn. When low, connected 2Bn. QS316211 ideal switching wide digital buses, 3.3V translation, plug buffering.
APPLICATIONS
Hot-swapping, hot-docking (Application Note AN-13) Voltage translation 3.3V; Application Note AN-11) Logic replacement (data processing Power conservation Capacitance reduction isolation isolation Clock gating
Figure Functional Block Diagram
1A12
1B12
2A12
2B12
MDSL-00139-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316211, QS3162211 ADVANCE INFORMATION Table Description
Name iA1-iA12 iB1-iB12 1OE-2OE Function Data select SSOP (PV), TSSOP (PA)
1A10 1A11 1A12 2A10 2A11 2A12 1B10 1B11 1B12 2B10 2B11 2B12
Figure Configuration (All Pins View)
Table Function Table
Function 1Bn, 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 -3.0V Output Current Max. Sink Current/Pin 120mA Maximum Power Dissipation =85°C 0.93 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 Unit
Note: Capacitance characterized production tested. total capacitance while switch please Section under "Input Switch Capacitance."
Pins Control Inputs QuickSwitch Channels (Switch OFF)
QUALITY SEMICONDUCTOR, INC.
MDSL-00139-02 JULY 1997
QS316211, QS3162211 ADVANCE INFORMATION 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 316211 3162211 316211 3162211
Typ(1) 0.01 0.01
Unit
Switch Resistance(2) Min., 2.4V 15mA 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 5.0V (QS316211)
(ohms)
(Volts)
QS3162211, shown.
MDSL-00139-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316211, QS3162211 ADVANCE INFORMATION 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., VIN= 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, 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, Switch Turn-off Delay(2) iAn,
(2,3)
QS316211 0.25
Unit 1.25
QS3162211
Notes: Test Circuit Waveforms. Minimums guaranteed production tested. This parameter guaranteed production tested. time constant switch alone order 0.25ns QS316211 1.25ns QS3162211 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-00139-02 JULY 1997
QS316211, QS3162211 ADVANCE INFORMATION
MDSL-00139-02 JULY 1997
QUALITY SEMICONDUCTOR, INC.
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