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

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

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

Datasheet Thumbnail

Top Searches for this datasheet

QS35245 ADVANCE INFORMATION
QUALITY SEMICONDUCTOR, INC.
QuickSwitch® Products High-Speed CMOS QuickSwitch 8-Bit Switches With Resistor
DESCRIPTION
QS35245
Enhanced channel with inherent diode Bidirectional switches connect inputs outputs compatible with 74F245, 74FCT245, 74FCT245T Near zero propagation delay Undershoot clamp diodes switch control inputs TTL-compatible control inputs Zero ground bounce flow-through mode Available 20-pin SOIC (SO), QSOP
QS35245 provides eight high-speed CMOS TTL-compatible switches pinout compatible with 74FCT245, 74F245, 74ALS/AS/ LS245 8-bit transceivers. Output Enable (OE) signal turns switches similar signal 74'245. QS35245 series resistors reduce ground bounce noise. series resistor minimizes charge sharing effect ideal series termination unterminated PCBl transmission lines. QuickSwitch devices provide order magnitude faster speed than conventional logic devices.
Noise, charge-sharing, ground bounce reduction Series termination applications Logic replacement (data processing) switching isolation Voltage translation 3.3V; Application Note AN-11) Hot-docking, hot-swapping (Application Note AN-13)
Figure Functional Block Diagram
MDSL-00249-00 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS35245 ADVANCE INFORMATION Table Description
Name Description Output Enable Data I/Os Data I/OS
Figure Configuration (All Pins View)
SOIC (SO), QSOP
Table Function Table
Outputs Disconnected
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 watts TSTG Storage Temperature -65° +150°C
Pins
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 QSOP, SOIC Unit
Note: Capacitance guaranteed production tested. total capacitance while switch please Section under "Input Switch Capacitance".
Control Inputs QuickSwitch Channels (Switch OFF)
QUALITY SEMICONDUCTOR, INC.
MDSL-00249-00 JULY 1997
QS35245 ADVANCE INFORMATION Table Electrical Characteristics Over Operating Range
Commercial: -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 15mA Min., 2.4V IOUT -5µA Typ(1) 0.001 Unit
Notes: Typical values indicate 5.0V 25°C. diagram explaining procedure measurement, please Section under Electrical Characteristics." value guaranteed, production tested. Pass voltage guaranteed, production tested.
Figure Typical Resistance 5.0V
(ohms)
(Volts)
MDSL-00249-00 JULY 1997
QUALITY SEMICONDUCTOR, INC.
QS35245 ADVANCE INFORMATION Table Power Supply Characteristics
Commercial: -40°C 85°C, 5.0V Symbol ICCQ QCCD Parameter Quiescent Power Supply Current Power Supply Current(2) Input HIGH Dynamic Power Supply Current MHz(3) Test Conditions(1) Max., VCC, Max., 3.4V, Control Input Max., Pins Open, Controls Inputs Toggling Duty Cycle 0.25 Unit
Notes: conditions shown Min. Max., appropriate values specified under specifications. 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
Commercial: -40°C 85°C, 5.0V CLOAD 50pF, RLOAD unless otherwise noted. Symbol tPLH tPHL tPZL tPZH tPLZ tPHZ Description Data Propagation Delay(2,3) to/from
QS35245 2.5(3)
Unit
Switch Turn-on Delay An/Bn
Switch Turn-off Delay(2) An/Bn
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 2.5ns QS35245 50pF. 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-00249-00 JULY 1997

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

Top Searches for this datasheet

Other recent searches