IDTQS32XR245 HIGH-SPEED CMOS QUICKSWITCH 16-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 16-BIT LOW RESISTANCE MULTIWIDTHTM BUS SWITCH FEATURES: • • • • • • • • IDTQS32XR245 DESCRIPTION: Enhanced N channel FET with no inherent diode to Vcc Ω bidirectional switches connect inputs to outputs 2.5Ω Zero propagation delay, zero ground bounce QS32XR245 is a 16-bit version of QS3R245 Flow-through pinout for easy layout Undershoot clamp diodes on all switch and control inputs TTL-compatible control inputs Available in 40-pin QVSOP package The QS32XR245 is a member of the MultiWidthTM family of QuickSwitch devices and provides a set of 32 high-speed low resistance CMOS compatible bus switches in a flow-thru pinout. This device is available in the MillipaQ package, the world's first small outline 16-bit solution. The low onresistance of the QS32XR245 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. When Output Enable (OEn) is low, the switches are turned on, connecting bus A to bus B. When OEn is high, the switches are turned off. This device is ideally suited for 16/32 bit applications where board space is at a premium.The low resistance of QS32XR245 makes it ideal for PCI hot docking application. QuickSwitch devices provide an order of magnitude faster speed than conventional logic devices. The QS32XR245 is characterized for operation at -40°C to +85°C. APPLICATIONS: • Low resistance applications • Hot-swapping, hot-docking (low resistance for PCI and Compact PCI applications) • Voltage translation (5V to 3.3V) • Capacitance reduction and isolation • Power conservation • Logic replacement (data processing) • Clock gating FUNCTIONAL BLOCK DIAGRAM A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 A8 A9 A 10 A 11 A 12 A 13 A 14 A 15 B8 B9 B 10 B 11 B 12 B 13 B 14 B 15 OE 1 OE 2 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE NOVEMBER 1999 1 c 1999 Integrated Device Technology, Inc. DSC-5545/2 IDTQS32XR245 HIGH-SPEED CMOS QUICKSWITCH 16-BIT LOW RESISTANCE BUS SWITCH PIN CONFIGURATION INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) NC 1 40 VCC A0 2 39 OE1 Symbol Description Max Unit VTERM(2) Supply Voltage to Ground –0.5 to +7 V 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 ≤ 20ns) –3 V IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation (TA = 85°C) 0.92 W TSTG Storage Temperature –65 to +150 °C A1 3 38 B0 A2 4 37 B1 A3 5 36 B2 A4 6 35 B3 A5 7 34 B4 A6 8 33 B5 A7 9 32 B6 G ND 10 31 B7 NC 11 30 VCC A8 12 29 OE2 A9 13 28 B8 A 10 14 27 B9 A 11 15 26 B 10 Pins Typ. Max.(1) Unit A 12 16 25 B 11 Control Pins 3 4 pF A 13 17 24 B 12 5 6 pF A 14 18 23 B 13 A 15 19 22 B 14 G ND 20 21 B 15 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) Quickswitch Channels (Switch OFF) NOTE: 1. This parameter is measured at characterization but not tested. PIN DESCRIPTION Pin Names QVSOP TOP VIEW I/O Description OE1, OE2 I An I/O Output 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 IDTQS32XR245 HIGH-SPEED CMOS QUICKSWITCH 16-BIT LOW RESISTANCE 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 ±10% Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit 2 — — V VIH Input HIGH Level Guaranteed Logic HIGH for Control Pins VIL Input LOW Level Guaranteed Logic LOW for Control Pins — — 0.8 V IIN Input LeakageCurrent (Control Inputs) 0V ≤ VIN ≤ VCC — — ±1 µA IOZ Off-State Output Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — — ±1 µA RON Switch ON Resistance(2) Pass Voltage(3) — — 3.7 2.5 4 4 5 8.5 4.3 Ω VP VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION =15mA VIN = VCC = 5V, IOUT = -5µA NOTES: 1. Typical values are at VCC = 5.0V, TA = 25°C. 2. Max value of RON is guaranteed but not production tested. 3. Pass Voltage is guaranteed but not production tested. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 16 R ON (ohms) 14 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 V IN (Volts) 3 2.5 3.0 3.5 V IDTQS32XR245 HIGH-SPEED CMOS QUICKSWITCH 16-BIT LOW RESISTANCE 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 ∆ICC Power Supply Current per Control Input HIGH (2) VCC = Max., VIN = 3.4V, f = 0 2.5 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 ∆Icc. 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 ± 10%; 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 OEn to An/Bn tPLZ Switch Turn-off Delay (2) tPHZ OEn to An/Bn Min. (1) Typ. Max. Unit — — 0.12 ns 0.5 — 5.6 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 0.12ns 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 IDTQS32XR245 HIGH-SPEED CMOS QUICKSWITCH 16-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process Blank Industrial (-40°C to +85°C) Q2 Q2G 40-Pin QVSOP QVSOP - Green 32XR245 High Speed CMOS Quickswitch 16-Bit Low Resistance MultiWidth Bus Switch CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 5 for Tech Support: [email protected] (408) 654-6459