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

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

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QS316212, QS3162212
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS 24-Bit Bus-Exchange Switch
DESCRIPTION
QS316212 QS3162212
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 inputs Available 56-pin SSOP TSSOP QS3162212 version noise
QS316212 QS3162212 provide twenty-four high-speed CMOS, TTL-compatible busexchange switches. resistance QS316212 allows inputs connected outputs without adding propagation delay without generating additional ground bounce noise. device operates 24-bit switch 12-bit exchanger, which provides data exchanging between four signal ports data-select (S0S2) terminals. QS3162212 adds internal resistor reduce reflection noise high-speed applications. When switch closed, acts source termination driver connected
APPLICATIONS
Resource sharing Crossbar switching Hot-docking (Application Note AN-13) Voltage translation 3.3V; Application Note AN-11)
Figure Functional Block Diagram
Channels
Flow Control
MDSL-00140-01 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316212, QS3162212 Table Description
Name 1An-12An 1Bn-12Bn Function Data select
10A1 10A2 11A1 11A2 12A1 12A2 10B1 10B2 11B1 11B2 12B1 12B2
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 =85°C, SSOP 0.93 watts TSSOP 0.77 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, TSSOP Unit
Note: Capacitance guaranteed, production tested. total capacitance while switch please Section under "Input Switch Capacitance."
QUALITY SEMICONDUCTOR, INC.
MDSL-00140-01 JULY 1997
QS316212, QS3162212 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 QS316212 QS3162212 QS316212 QS3162212 Typ(1) Unit
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 (QS316212)
(ohms)
(Volts)
Note: QS3162212, shown.
MDSL-00140-01 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS316212, QS3162212 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)
QS316212 QS3162212 QS316212 QS3162212 QS316212 QS3162212
Unit 0.25 1.25
Notes: Test Circuit Waveforms. Minimums guaranteed production tested. This parameter guaranteed, production tested. time constant switch alone order 0.25ns QS316212 1.25 QS3162212 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.
Switch Turn-off Delay(2) iAn,
QUALITY SEMICONDUCTOR, INC.
MDSL-00140-01 JULY 1997

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

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