QUICKSWITCH® PRODUCTS 2.5V/3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
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IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
QUICKSWITCH® PRODUCTS 2.5V/3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
IDTQS3VH257 PRELIMINARY
channel switches with parasitic diode Isolation under power-off conditions path tolerant state tolerant I/Os typical Flat characteristics over operating range Rail-to-rail switching Bidirectional dataflow with near-zero delay: added ground bounce Excellent matching between channels operation: 2.3V 3.6V High bandwidth 500MHz LVTTL-compatible control Inputs Undershoot Clamp Diodes switch control Inputs capacitance, typical Available QSOP, SOIC, TSSOP packages
QS3VH257 HotSwitch Quad multiplexer/demultiplexer high bandwidth switch. QS3VH257 very resistance, resulting under 250ps propagation delay through switch. Select input controls data flow. multiplexers/demultiplexers enabled when Enable input low. state, switches pass signals state, switches offer very high impedence terminals. combination near-zero propagation delay, high impedance, over-voltage tolerance makes QS3VH257 ideal high performance communication applications. QS3VH257 characterized operation from -40°C +85°C.
APPLICATIONS:
Hot-swapping Multiplexing/demultiplexing distortion analog switch Replaces mechanical relay A25/155 switching
FUNCTIONAL BLOCK DIAGRAM
logo registered trademark Integrated Device Technology, Inc.
2003 Integrated Device Technology, Inc.
MARCH 2003
DSC-5596/9
IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) VTERM(3) VTERM(3) IOUT TSTG Description SupplyVoltage Ground Switch Voltage Input Voltage Input Voltage (pulse width 20ns) Output Current (max. sink current/pin) Storage Temperature -0.5 +4.6 -0.5 +5.5 -0.5 +5.5 +150
Unit
QSOP/ SOIC/ TSSOP VIEW
NOTES: Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS cause permanent damage device. This stress rating only functional operation device these other conditions above those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect reliability. terminals. terminals except
CAPACITANCE +25°C, 1MHz, VOUT
Symbol CI/O CI/O Parameter(1) Control Inputs Quickswitch Channels (Switch OFF) Quickswitch Channels (Switch Demux Demux Typ. Max. Unit
NOTE: This parameter guaranteed production tested.
DESCRIPTION
Names Description Data Inputs Select Input Enable Input Data Outputs
FUNCTION TABLE(1)
Inputs Outputs Function Disable Select Select
NOTE: HIGH Voltage Level Voltage Level Don't Care High-Impedence
IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Industrial: -40°C +85°C, 3.3V ±0.3V
Symbol Parameter Input HIGH Voltage Input Voltage Input Leakage Current (Control Inputs) Off-State Current (Hi-Z) Data Input/Output Power Leakage Switch Resistance Control Inputs Guaranteed Logic Control Inputs VOUT Switches VOUT 2.3V Typical 2.5V
NOTE: Typical values 3.3V 25°C.
Test Conditions Guaranteed Logic HIGH 2.3V 2.7V 2.7V 3.6V 2.3V 2.7V 2.7V 3.6V
Min.
Typ.(1) Max.
Unit
1.7V 2.4V
30mA 15mA 30mA 15mA
TYPICAL RESISTANCE 3.3V
(ohms)
(Volts)
IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
POWER SUPPLY CHARACTERISTICS
Symbol ICCQ ICCD Parameter Quiescent Power Supply Current Power Supply Current (2,3) Input HIGH Dynamic Power Supply Current
Test Conditions(1) Max., VCC, Max., Control Input 3.3V, Pins Open, Control Inputs Toggling Duty Cycle
Min.
Typ.
Max.
Unit
Typical ICCD Enable Frequency graph below
NOTES: conditions shown Min. Max., appropriate values specified under Electrical Characteristics. input driven specified level. Mux/demux pins contribute Icc. This parameter guaranteed tested. This parameter represents current required switch internal capacitance specified frequency. mux/demux inputs contribute Dynamic Power Supply Current. This parameter guaranteed production tested.
TYPICAL ICCD ENABLE FREQUENCY CURVE 3.3V
ICCD (mA)
ENABLE FREQUENCY (MHz)
IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
-40°C +85°C
0.2V Symbol tPLH tPHL tSEL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ fEorS Parameter Data Propagation Delay(2,3) Select Time Enable Time Disable Time Enable Time Disable Time Operating Frequency Enable(2,5) Min. 0.3V Min. Max. Unit Max.
NOTES: Test Conditions under TEST CIRCUITS WAVEFORMS. This parameter guaranteed production tested. switch contributes propagation delay other than delay resistance switch load capacitance. time constant switch alone order 0.2ns 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. Minimums guaranteed production tested. Maximum toggle frequency control input (pass voltage VCC, RLOAD CLOAD).
IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
SOME APPLICATIONS HOTSWITCH PRODUCTS
NFET
3.3V
CHARGE PUMP
+6.5V
DRIVER SINGLE ITCH
Rail-to-Rail Switching
ULTIPLEXING CONTROL CIRCUITRY
Multiplexing Demultiplexing
PLUG GABLE LIVE SYSTEM CONNECTOR
ZERO SYSTEM QS3VH
CARD
CARD LOGIC
CONNECTOR
QS3VH
CARD
CARD LOGIC
Hot-Swapping
IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
TEST CIRCUITS WAVEFORMS TEST CONDITIONS
Symbol VLOAD 3.3V 0.3V
2.5V 0.2V
Unit
PHASE INPUT TRANSITION tPLH OUTPUT PPOSITE PHASE INPUT TRANSITION tPHL
VCC/2
Propagation Delay
Pulse Generator
LOAD ENABLE Open CONTRO INPUT OUTPUT ITCH NORMALLY OUTPUT ITCH NORMALLY OPEN HIGH LOAD/2
DISABLE
D.U.T.
tPLZ
Test Circuits Outputs
NOTE: Diagram shown input Control Enable-LOW input Control Disable-HIGH. DEFINITIONS: Load capacitance: includes probe capacitance. Termination resistance: should equal ZOUT Pulse Generator. NOTES: Pulse Generator Pulses: Rate 10MHz; 2.5ns; 2.5ns. Pulse Generator Pulses: Rate 10MHz; 2ns; 2ns.
Enable Disable Times
SWITCH POSITION
Test tPLZ/tPZL tPHZ/tPZH
Switch VLOAD Open
IDTQS3VH257 2.5V 3.3V QUAD MUX/DEMUX HIGH BANDWIDTH SWITCH
ORDERING INFORMATION
IDTQS XXXXX Device Type Package
3VH257
Small Outline Quarter Size Outline Package Thin Shrink Small Outline Package 2.5V 3.3V Quad Mux/Demux High Bandwidth Switch
DATA SHEET DOCUMENT HISTORY
8/6/2002 3/3/2003 Updated according Logic-0206-11 Changed limits
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