IDTQS32X2245 HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH FEATURES: • • • • • • • IDTQS32X2245 DESCRIPTION: Enhanced N channel FET with no inherent diode to Vcc Dual '245 function Ω resistor for low noise 25Ω Low propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs TTL-compatible control inputs Available in 40-pin QVSOP package The QS32X2245 provides a set of 16 high-speed CMOS TTL-compatible bus switches in a flow-through pinout. The QS32X2245 includes internal 25Ω resistors to reduce reflection noise in high speed applications. The Output Enable (OEn) signals turn the switches on similar to the OEn signal of the 74'245. QuickSwitch devices provide an order of magnitude faster speed than conventional logic devices. The QS32X2245 is characterized for operation at -40°C to +85°C. APPLICATIONS: • • • • • • Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Bus switching and isolation Power conservation Clock gating Logic replacement FUNCTIONAL BLOCK DIAGRAM A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 A8 A9 A10 A11 A12 A13 A14 A15 B8 B9 B10 B11 B12 B13 B14 B15 OE1 OE2 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE c 2011 Integrated Device Technology, Inc. FEBRUARY 2011 1 DSC-5724/5 IDTQS32X2245 HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol Description Max Unit Supply Voltage to Ground –0.5 to +7 V NC 1 40 VCC VTERM(2) A0 2 39 OE1 VTERM(3) DC Switch Voltage Vs –0.5 to +7 V VTERM(3) DC Input Voltage VIN –0.5 to +7 V A1 3 38 B0 VAC AC Input Voltage (pulse width ≤ 20ns) –3 V A2 4 37 B1 IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation (TA = 85°C) 0.92 W A3 5 36 B2 TSTG Storage Temperature –65 to +150 °C A4 6 35 B3 A5 7 34 B4 A6 8 33 B5 A7 9 32 B6 GND 10 31 B7 NC 11 30 Vcc A8 12 29 OE2 A9 13 28 B8 A10 14 27 B9 15 26 B10 A12 16 25 B11 A13 17 24 B12 A14 18 23 B13 A15 19 22 B14 GND 20 21 B15 A11 NOTE: 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. 2. Vcc terminals. 3. All terminals except Vcc. CAPACITANCE (TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V) Pins Typ. Max.(1) Unit Control Pins 3 5 pF 5 7 pF Quickswitch Channels (Switch OFF) NOTE: 1. This parameter is measured at characterization but not tested. PIN DESCRIPTION Pin Names QVSOP TOP VIEW Description I/O OE1, OE2 I An I/O Bus Enable Bus A Bn I/O Bus B FUNCTION TABLE(1) OE1 OE2 A8 - A15 Function H H Z Z Disconnect L H B0 - B7 Z Connect H L Z B8 - B15 Connect L L B0 - B7 B8 - B15 Connect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance 2 A0 - A7 IDTQS32X2245 HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5% Symbol Parameter Test Conditions VIH Input HIGH Level Guaranteed Logic HIGH for Control Pins VIL Input LOW Level Guaranteed Logic LOW for Control Pins IIN Input LeakageCurrent (Control Inputs)(2) 0V ≤ VIN ≤ VCC IOZ Off-State Output Current (Hi-Z) Switch ON Resistance RON(3) VP Pass Voltage(2) Min. Typ.(1) Max. Unit 2 — — V — — 0.8 V — ±0.01 ±1 μA 0V ≤ VOUT ≤ VCC, Switches OFF — ±0.01 ±1 μA VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION =15mA VIN = VCC = 5V, IOUT = -5μA 18 18 3.7 23 25 4 35 40 4.2 Ω NOTES: 1. Typical values are at VCC = 5.0V, TA = 25°C. 2. Pass Voltage is guaranteed but not production tested. 3. ROUT changed on March 8, 2002. See rear page for more information. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 80 R ON (ohms) 70 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5 2.0 V IN (Volts) 3 2.5 3.0 3.5 V IDTQS32X2245 HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol Test Conditions(1) Parameter Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or Vcc, f = 0 6 μA ΔICC Power Supply Current per Control Input HIGH (2) VCC = Max., VIN = 3.4V, f = 0 1.5 mA ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., A and B pins open 0.25 mA/MHz Control Inputs Toggling at 50% Duty Cycle NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TLL driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to ΔIcc. 3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B 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 = -40°C to +85°C, VCC = 5.0V ± 5%; CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol Parameter tPLH Data Propagation Delay (2,3) tPHL An to/from Bn tPZL Switch Turn-on Delay tPZH OE to An/Bn tPLZ Switch Turn-off Delay (2) tPHZ OE to An/Bn Min. (1) Typ. Max. Unit — — 1.25 ns 0.5 — 6.6 ns 0.5 — 4.5 ns NOTES: 1. Minimums are guaranteed but not production tested. 2. 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 1.25ns 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. 4 IDTQS32X2245 HIGH-SPEED CMOS QUICKSWITCH DOUBLE-WIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION QS XXXXX Device Type XX Package X Process X Blank 8 Tube or Tray Tape and Reel Blank Industrial (-40°C to +85°C) Q2G 40-Pin QVSOP - Green 32X2245 High Speed CMOS QuickSwitch Double Width Bus Switch As per PCN L0201-02, the Output Resistance (RON) specifications have changed as of March 8, 2002. The original specifications were: Parameter RON Description Min. Typ. Max. Unit VCC = Min, VIN = 0V, ION = 30mA 20 28 40 Ω VCC = Min, VIN = 2.4V, ION = 15mA 20 35 48 Datasheet Document History 02/16/2011 Pg. 5 Updated the ordering information by removing the "IDT" notation, non RoHS part and by adding Tape and Reel information. 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