QUALITY SEMICONDUCTOR, INC. QuickSwitch® Products High-Speed CMOS
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QS316214, QS3162214 ADVANCE INFORMATION
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS 12-Bit 3-to-1 Bus-Select Switch
DESCRIPTION
QS316214 QS3162214 ADVANCE INFORMATION
Enhanced channel with inherent diode bidirectional switches connect inputs outputs Zero propagation delay, zero ground bounce TTL-compatible input output levels Operating temperature range: -40°C 85°C Undershoot clamp diodes switch control pins Available 56-pin SSOP QS3162214 version noise
QS316214 provides twelve high-speed CMOS TTL-compatible buses switching between three separate ports. resistance QS316214 allows inputs connected outputs without adding propagation delay without generating additional ground bounce noise. device operates 12-bit bus-select switch dataselect (S0-S2) terminals. QS3162214 adds internal series termination resistor reduce reflection noise high speed applications. When closed, switch acts source (series) termination driver connected Mux/Demux devices provide order magnitude faster speed than equivalent logic devices.
APPLICATIONS
Video, audio, graphics switching, muxing Hot-swapping, hot-docking (Application Note AN-13) Voltage translation 3.3V; Application Note AN-11)
Figure Functional Block Diagram
Channels
Flow Control
MDSL-00142-01 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316214, QS3162214 ADVANCE INFORMATION Table Description
Name 1A-12A 1Bn-12Bn Function Data select
10B3 11B3 12B3 10B1 10B2 11B1 11B2 12B1 12B2
Figure Configuration (All Pins View)
SSOP (PV)
Table Function Table
Function Disconnect Disconnect 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 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 Pins Control Inputs QuickSwitch Channels (Switch OFF) Demux SSOP Unit
Note: Capacitance guaranteed, production tested. total capacitance while switch please Section under "Input Switch Capacitance."
QUALITY SEMICONDUCTOR, INC.
MDSL-00142-01 JULY 1997
QS316214, QS3162214 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 Min., 0.0V 30mA QS316214 QS3162214 QS316214 QS3162214
Typ(1)
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
(ohms)
(Volts)
MDSL-00142-01 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316214, QS3162214 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., 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
QS316214
Unit 1.25(3)
QS3162214
Data Propagation Delay(2,4) iBn, Switch Turn-on Delay Switch Turn-off Delay(2)
0.25(3)
Notes: Test Circuit Waveforms. Minimums guaranteed, production tested. This parameter guaranteed, production tested. time constant switch alone order 0.25ns QS316214 1.25ns QS3162214 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-00142-01 JULY 1997
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