IDTQS3257 HIGH-SPEED CMOS QUICKSWITCH QUAD 2:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH PRODUCTS IDTQS3257 HIGH-SPEED CMOS QUICKSWITCH QUAD 2:1 MUX/DEMUX FEATURES: DESCRIPTION: Enhanced N channel FET with no inherent diode to Vcc The QS3257 is a high-speed CMOS LVTTL-compatible Quad 2:1 5 bidirectional switches connect inputs to outputs multiplexer/demultiplexer. The QS3257 is a function and pinout compatible Pin compatible with the 74F257, 74FCT257, and 74FCT257T QuickSwitch version of the 74F257, 74FCT257, and the 74ALS/AS/LS257 Zero propagation delay, zero ground bounce Quad 2:1 multiplexers. The low ON resistance of the QS3257 allows inputs Undershoot clamp diodes on all switch and control inputs to be connected to outputs without adding propagation delay and without TTL-compatible control inputs generating additional ground bounce noise. Available in QSOP and S1 packages Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS3257 is characterized for operation at -40C to +85C. APPLICATIONS: Logic replacement Video, audio, graphics switching, muxing Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Bus funneling FUNCTIONAL BLOCK DIAGRAM S E I0A YA I1A I0B YB I1B I0C YC I1C I0D YD I1D INDUSTRIAL TEMPERATURE RANGE FEBRUARY 2011 1 c 2011 Integrated Device Technology, Inc. DSC-5756/10IDTQS3257 HIGH-SPEED CMOS QUICKSWITCH QUAD 2:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE (1) ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION Symbol Description Max Unit (2) VTERM Supply Voltage to Ground 0.5 to +7 V (3) VTERM DC Switch Voltage Vs 0.5 to +7 V (3) 1 S 16 VCC VTERM DC Input Voltage VIN 0.5 to +7 V VAC AC Input Voltage (pulse width 20ns) 3 V I0A 2 15 E IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation (TA = 85C) 0.5 W I0D 3 I1A 14 TSTG Storage Temperature 65 to +150 C YA 4 13 I1D NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause YD permanent damage to the device. This is a stress rating only and functional operation I0B 5 12 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 6 I0C 11 I1B conditions for extended periods may affect reliability. 2. Vcc terminals. 3. All terminals except Vcc. YB 7 10 I1C GND 8 9 YC CAPACITANCE (TA = +25C, f = 1.0MHZ, VIN = 0V, VOUT = 0V) QSOP/ S1 TOP VIEW (1) Pins Typ. Max. Unit Control Pins 4 5 pF Quickswitch Channels Demux 5 7 pF (Switch OFF) Mux 8 9 NOTE: 1. This parameter is measured at characterization but not tested. PIN DESCRIPTION Pin Names I/O Description I x x I Data Inputs S I Select Input E I Enable Input YA - YD O Data Outputs (1) FUNCTION TABLE Enable Outputs E SYA YB YC YD Function H X Hi-Z Hi-Z Hi-Z Hi-Z Disconnected LL I0A I0B I0C I0D Select 0 LH I1A I1B I1C I1D Select 1 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don t Care Z = High-Impedance 2