IDTQS34XR245 HIGH SPEED CMOS QUICKSWITCH 32-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 32-BIT LOW RESISTANCE MULTIWIDTHTM BUS SWITCHES FEATURES: • • • • • • • • IDTQS34XR245 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 QS34XR245Q3 is a 32-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 80-pin Millipaq package The QS34XR245 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-through pin out. This device is available in the MillipaQ package, the worlds first small outline 32-bit solution. The low on-resistance of the QS34XR245 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. When Output Enable (OEx) is low, the switches are turned on, connecting bus A to bus B. When OEx is high, the switches are turned off. The QS34XR245 is ideally suited for 32/64 bit applications where board space is at a premium. The low resistance of QS34XR245 makes it ideal for PCI hot docking application. QuickSwitch devices provide an order of magnitude faster speed than conventional logic devices. APPLICATIONS: • Low resistance applications • Hot-swapping, hot-docking (low resistance for PCI and Compact PCI applications) • Bus switching, isolation • Logic replacement (data processing) • Capacitance reduction and isolation • Power conservation • Clock gating • Voltage translation (5V to 3.3V) FUNCTIONAL BLOCK DIAGRAM A0 A1 A2 A3 A4 A5 A6 A7 OE1 A 16 A 17 A 18 A 19 A 20 A 21 A 22 A 23 B 22 B 23 OE3 B0 A8 B1 A9 B2 B3 B4 B5 B6 B7 B 16 B 17 B 18 B 19 B 20 B 21 A 10 A 11 A 12 A 13 A 14 A 15 A 24 A 25 A 26 A 27 A 28 A 29 B 24 B 25 B 26 B 27 B 28 B 29 OE2 A 30 A 31 OE4 B8 B9 B 10 B 11 B 12 B 13 B 14 B 15 B 30 B 31 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-5544/1 IDTQS34XR245 HIGH SPEED CMOS QUICKSWITCH 32-BIT LOW RESISTANCE BUS SWITCH PIN CONFIGURATION NC 1 A0 2 A1 INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) 80 V CC 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 79 OE1 3 78 B0 4 VAC AC Input Voltage (pulse width ≤ 20ns) –3 V A2 77 B1 DC Output Current 120 mA A3 5 IOUT 76 B2 PMAX Maximum Power Dissipation (TA = 85°C) 1.4 W A4 6 75 B3 TSTG Storage Temperature –65 to +150 °C A5 7 74 B4 A6 8 73 B5 A7 9 72 B6 GND 10 71 B7 NC 11 70 V CC A8 12 69 OE2 A9 13 68 B8 A 10 14 67 B9 A 11 15 66 B 10 A 12 16 65 B 11 A 13 17 64 B 12 A 14 18 63 B 13 A 15 19 62 B 14 GND 20 61 B 15 Pins Typ. Max.(1) Unit Control Pins 3 4 pF 7 8 pF NC 21 60 V CC A 16 22 59 OE3 A 17 23 58 B 16 A 18 24 57 B 17 A 19 25 56 B 18 A 20 26 55 B 19 A 21 27 54 B 20 A 22 28 53 B 21 A 23 29 52 B 22 GND 30 51 B 23 NC 31 50 V CC A 24 32 49 OE4 A 25 33 48 B 24 A 26 34 47 B 25 A 27 35 46 B 26 A 28 36 45 B 27 A 29 37 44 B 28 A 30 38 43 B 29 A 31 39 42 B 30 GND 40 41 B 31 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 Description Output Enable OEx Ax, Bx Data I/Os FUNCTION TABLE(1) OE1x Function H Disconnect L Ax = Bx NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level MILLIPAQ (Q3) TOP VIEW 2 IDTQS34XR245 HIGH SPEED CMOS QUICKSWITCH 32-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 V 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 14 (ohms) 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 IDTQS34XR245 HIGH SPEED CMOS QUICKSWITCH 32-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 12 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 Ax to/from Bx tPZL Switch Turn-on Delay tPZH OE to Ax/Bx tPLZ Switch Turn-off Delay (2) tPHZ OE to Ax/Bx 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 = 30pF. 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 IDTQS34XR245 HIGH SPEED CMOS QUICKSWITCH 32-BIT LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX XX Device Type Package X Process CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 Blank Industrial (-40°C to +85°C) Q3 80-Pin M illipaQ 34XR245 High Speed CM OS 32-Bit Low Resitance MultiW idth Bus Switch 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