IDTQS34X245 HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH™ BUS SWITCHES DESCRIPTION: FEATURES: • • • • • • • • The QS34X245 is a member of the MultiWidthTM family of QuickSwitch devices and provides a set of 32 high-speed CMOS compatible bus switches in a flow-through pinout. This device is available in the MilliPaQ package, the world's first small outline 32-bit solution. The low ON-resistance of the QS34X245 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 32/64 bit applications where board space is at a premium. QuickSwitch devices provide speeds an order of magnitude faster than conventional logic devices. The QS34X245 is characterized for operation at -40°C to +85°C. Enhanced N channel FET with no inherent diode to Vcc Bidirectional switches connect inputs to outputs Zero propagation delay, zero ground bounce QS34X245 is 32-bit version of QS3245 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 APPLICATIONS: • • • • • • • IDTQS34X245 Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Bus switching and isolation Power conservation Logic replacement (data processing) Capacitance isolation Clock gating FUNCTIONAL BLOCK DIAGRAM A0 A1 A2 A3 A4 A5 A6 A7 A 16 A 17 A 18 A 19 A 20 A 21 A 22 A 23 B7 B 16 B 17 B 18 B 19 B 20 B 21 B 22 B 23 A 13 A 14 A 15 A 24 A 25 A 26 A 27 A 28 A 29 A 30 A 31 B 24 B 25 B 26 B 27 B 28 B 29 B 30 B 31 OE3 OE1 B0 B1 A8 A9 B2 B3 B4 A 10 A 11 A 12 B5 B6 OE4 OE2 B8 B9 B 10 B 11 B 12 B 13 B 14 B 15 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE APRIL 2000 1 c 2000 Integrated Device Technology, Inc. DSC-5481/3 IDTQS34X245 HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES PIN CONFIGURATION INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) Symbol Description Max Unit NC 1 80 VCC VTERM(2) Supply Voltage to Ground –0.5 to +7 V A0 2 79 OE1 VTERM(3) DC Switch Voltage Vs –0.5 to +7 V A1 3 78 B0 VTERM(3) DC Input Voltage VIN –0.5 to +7 V A2 4 77 B1 VAC AC Input Voltage (pulse width ≤ 20ns) –3 V A3 5 76 B2 IOUT DC Output Current 120 mA A4 6 75 B3 PMAX Maximum Power Dissipation (TA =70°C) 1.4 W A5 7 74 B4 TSTG Storage Temperature –65 to +150 °C A6 8 73 B5 A7 9 72 B6 GND 10 71 B7 NC 11 70 VCC A8 12 69 OE2 A9 13 68 B8 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. A10 14 67 B9 A11 15 66 B10 A12 16 65 B11 A13 17 64 B12 A14 18 63 B13 A15 19 62 B14 GND 20 61 B15 Pins Typ. Max.(1) Unit NC 21 60 VCC Control Pins 3 4 pF A16 22 59 OE3 7 8 pF A17 23 58 B16 A18 24 57 B17 A19 25 56 B18 A20 26 55 B19 A21 27 54 B20 A22 28 53 B21 A23 29 52 B22 GND 30 51 B23 Pin Names NC 31 50 VCC OEn A24 32 49 OE4 An Data I/Os A25 33 48 B24 Bn Data I/Os A26 34 47 B25 A27 35 46 B26 A28 36 45 B27 A29 37 44 B28 OEn Function A30 38 43 B29 H Disconnected A31 39 42 B30 L An = Bn GND 40 41 B31 MILLIPAQ TOP VIEW 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 Description Output Enable FUNCTION TABLE(1) NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level 2 IDTQS34X245 HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES 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 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 Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — — ±1 µA RON Switch ON Resistance Pass Voltage(2) — — 3.7 5 10 4 7 15 4.2 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. 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 IDTQS34X245 HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES 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 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 ∆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 ± 5%; CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol Parameter tPLH Data Propagation Delay (1,2) tPHL An to/from Bn tPZL Switch Turn-on Delay tPZH OE to An/Bn tPLZ Switch Turn-off Delay (1) tPHZ OE to An/Bn Min. (1) Typ. Max. Unit — — 0.25 ns 0.5 — 5.6 ns 0.5 — 5.2 ns NOTES: 1. Minimums are guaranteed but not production tested. 2. 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 0.25ns 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 IDTQS34X245 HIGH-SPEED CMOS QUICKSWITCH 32-BIT MULTIWIDTH BUS SWITCHES INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXXX Device Type XX Package X Process Blank Industrial (-40°C to +85°C) Q3 Q3G 80-pin Millipaq 80-pin Millipaq - Green 34X245 High-Speed CMOS Quickswitch 32-Bit Multiwidth Bus Switches 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