IDTQS3257 QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH QUAD 2:1 MUX/DEMUX DESCRIPTION: FUNCTIONAL BLOCK DIAGRAM FEATURES: APPLICATIONS:

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1 HIGH-SPEED CMOS QUICKSWITCH QUAD :1 MUX/DEMUX FEATURES: Enhanced N channel FET with no inherent diode to Vcc 5Ω bidirectional switches connect inputs to outputs Pin compatible with the 7F57, 7FCT57, and 7FCT57T Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs TTL-compatible control inputs Available in QSOP, SOIC, and S1 Packages APPLICATIONS: Logic replacement Video, audio, graphics switching, muxing Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Bus funneling QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH QUAD :1 MUX/DEMUX DESCRIPTION: IDTQS357 The QS357 is a high-speed CMOS LVTTL-compatible Quad :1 multiplexer/demultiplexer. The QS357 is a function and pinout compatible QuickSwitch version of the 7F57, 7FCT57, and the 7ALS/AS/LS57 Quad :1 multiplexers. The low ON resistance of the QS357 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS357 is characterized for operation at -0 C to +85 C. FUNCTIONAL BLOCK DIAGRAM S E YA I0A I1A YB I0B I1B YC I0C I1C YD I0D I1D The IDT logo is a registered trademark of Integrated Device Technology, Inc. NOVEMBER c 001 Integrated Device Technology, Inc. DSC-5756/3

2 HIGH-SPEED CMOS QUICKSWITCH QUAD :1 MUX/DEMUX PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS (1) Symbol Description Max. Unit VTERM () Supply Voltage to Ground 0.5 to +7 V S I0A VCC E VTERM (3) DC Switch Voltage VS 0.5 to +7 V VTERM (3) DC Input Voltage VIN 0.5 to +7 V VAC AC Input Voltage (pulse width 0ns) -3 V IOUT DC Output Current 10 ma I1A YA I0B I1B YB GND SO16-1 SO16-7 SO I0D I1D YD I0C I1C YC PMAX Maximum Power Dissipation (TA = 85 C) 0.5 W TSTG Storage Temperature 65 to +150 C 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.. Vcc Terminals. 3. All terminals except Vcc. CAPACITANCE (TA = +5 O C, f = 1.0MHz, VIN = 0V, VOUT = 0V) SOIC/ QSOP/ S1 TOP VIEW Pins Typ. Max. (1) Unit Control Pins 5 pf Quickswitch Channels Demux 5 7 pf (Switch OFF) Mux 8 9 pf NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names I/O Description Ixx I Data Inputs S I Select Input E I Enable Input YA - YD O Data Outputs FUNCTION TABLE (1) Inputs Outputs E S YA YB YC YD Function H X Z Z Z Z Disconnected L L I0A I0B I0C I0D Select 0 L H I1A I1B I1C I1D Select 1 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don t Care Z = High-Impedence

3 HIGH-SPEED CMOS QUICKSWITCH QUAD :1 MUX/DEMUX DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -0 C to +85 C, VCC = 5.0V ± 5% Symbol Parameter Test Conditions Min. Typ. (1) Max. Unit VIH Input HIGH Voltage Guaranteed Logic HIGH for Control Pins V VIL Input LOW Voltage Guaranteed Logic LOW for Control Pins 0.8 V IIN Input Leakage Current (Control Inputs) 0V VIN Vcc ±1 µa IOZ Off-State Current (Hi-Z) 0V VOUT Vcc ±1 µa RON Switch ON Resistance Vcc = Min., VIN = 0V, ION = 30mA 5 7 Ω RON Switch ON Resistance Vcc = Min., VIN =.V, ION = 15mA Ω VP Pass Voltage () VIN = Vcc = 5V, IOUT = -5µA 3.7. V 1. Typical values are at VCC = 5.0V, TA = 5 C.. Pass voltage is guaranteed but not production tested. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V RON (ohms) VIN (Volts) 3

4 HIGH-SPEED CMOS QUICKSWITCH QUAD :1 MUX/DEMUX POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions (1) Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or Vcc, f = 0 3 µa ICC Power Supply Current per Control Input HIGH () VCC = Max., VIN = 3.V, f = ma ICCD Dynamic Power Supply Current per MHz (3) VCC = Max., I and Y pins open Control Inputs Toggling at 50% Duty Cycle 0.5 ma/mhz 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.. Per TLL driven input (VIN = 3.V, control inputs only). I and Y pins do not contribute to Icc. 3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The I and Y inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested. SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -0 C to +85 C, VCC = 5.0V ± 5% CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol Parameter Min. (1) Typ. Max. Unit tplh Data Propagation Delay (,3) tphl In to Y 0.5 ns tpzh Switch Turn-on Delay tpzl Sn to Y ns tpzh Switch Turn-on Delay tpzl EN to Y ns tphz Switch Turn-off Delay () tplz EN to Y, Sn to Y ns 1. Minimums are guaranteed but not production tested.. This parameter is guaranteed but not production tested. 3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.5ns for CL = 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the system. Propagation delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.

5 HIGH-SPEED CMOS QUICKSWITCH QUAD :1 MUX/DEMUX ORDERING INFORMATION IDTQS XXXXX XX Device Type Package SO Q S1 Small Outline IC (SO16-1) Quarter Size Outline Package (SO16-7) Quarter Size Outline Package (SO16-8) 357 High Speed CMOS Quickswitch Quad :1 Mux/Demux CORPORATE HEADQUARTERS for SALES: for Tech Support: 975 Stender Way or logichelp@idt.com Santa Clara, CA 9505 fax: (08)