IDTQS3LR384 HIGH-SPEED CMOS 10-BIT LOW POWER, LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS 10-BIT LOW POWER, LOW RESISTANCE BUS SWITCH DESCRIPTION: FEATURES: − − − − − − − Enhanced N channel FET with no inherent diode to Vcc 2.5Ω bidirectional switches connect inputs to outputs Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control pins Ultra low power with 0.2µA typical Icc Two enables control five bits each Available in SOIC and QSOP Packages The QS3LR384 provides a set of ten high-speed CMOS TTL-compatible bus switches. Two banks of 5 switches are controlled by independent Bus Enable (BE) signals. The very low RON resistance (2.5Ω) of the QS3LR384 allows inputs to be connected without adding propagation delay and without generating additional ground bounce noise. The low ON resistance of the QS3LR384 makes it ideal for PCI hotplugging or hot-swapping applications. APPLICATIONS − − − − − − IDTQS3LR384 The QS3LR384 is characterized for operation at -40°C to +85°C. Hot -swapping and hot-docking (low resistance for PCI and Compact PCI applications) Voltage translation (5V to 3.3V) Power conservation Capacitance reduction and isolation Bus isolation Clock gating FUNCTIONAL BLOCK DIAGRAM A0 B0 A4 B4 A5 B5 A9 B9 BEA BEB INDUSTRIAL TEMPERATURE RANGE NOVEMBER 1999 1 c 1999 Integrated Device Technology, Inc. DSC-5547/- IDTQS3LR384 HIGH-SPEED CMOS 10-BIT LOW POWER, LOW RESISTANCE BUS SWITCH PIN CONFIGURATION BE A B0 1 ABSOLUTE MAXIMUM RATINGS 24 2 23 Vcc B9 A0 3 22 A9 A1 4 21 A8 B1 5 20 B8 B2 6 19 B7 A2 7 18 A7 A3 8 17 A6 B3 9 16 B6 B4 10 15 B5 A4 11 14 A5 GND 12 13 BEB SO24-2 SO24-8 INDUSTRIAL TEMPERATURE RANGE (1) Symbol Description VTERM(2) Max. Supply Voltage to Ground – 0.5 to +7 V VTERM(3) DC Switch Voltage VS – 0.5 to +7 V VTERM(3) VAC DC Input Voltage VIN – 0.5 to +7 V -3 V IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation .5 W TSTG Storage Temperature – 65 to +150 °C AC Input Voltage (pulse width ≤20ns) Unit NOTES: 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 = +25OC, f = 1.0MHz, VIN = 0V, VOUT = 0V) SOIC/ QSOP TOP VIEW Pins Control Inputs Typ. 3 Max. (1) 5 Unit pF Quickswitch Channels (Switch OFF) 5 7 pF NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names A0 - A9 I/O I/O Bus A Description B0 - B9 I/O Bus B BEA, BEB I Bus Switch Enable FUNCTION TABLE(1) BEA BEB B0 - B4 B5 - B9 H H Hi-Z Hi-Z Disconnect L H A0 - A4 Hi-Z Connect H L Hi-Z A5 - A9 Connect L L A0 - A4 A5 - A9 Connect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedence 2 Function IDTQS3LR384 HIGH-SPEED CMOS 10-BIT LOW POWER, 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% Typ.(1) — Max. — — — 0.8 V — ±0.01 ±1 µA — ±0.01 ±1 µA Vcc = Min., VIN = 0V, ION = 30mA — 2.5 5 Ω Vcc = Min., VIN = 2.4V, ION = 15mA — 4 8.5 Ω VIN = Vcc = 5V, IOUT = -5µA 3.7 4 4.3 V Symbol VIH Parameter Input HIGH Voltage Test Conditions Guaranteed Logic HIGH for Control Pins VIL Input LOW Voltage Guaranteed Logic LOW for Control Pins IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ Vcc IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ Vcc, Switches OFF RON Switch ON Resistance RON Switch ON Resistance VP Pass Voltage (2) Min. 2 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 Unit V IDTQS3LR384 HIGH-SPEED CMOS 10-BIT LOW POWER, LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol ICCQ Parameter Quiescent Power Supply Current Test Conditions(1) VCC = Max., VIN = GND or Vcc, f = 0 ∆ICC Power Supply Current per Control Input HIGH (2) ICCD Dynamic Power Supply Current per MHz(3) Typ. 0.2 Max. 3 Unit µA VCC = Max., VIN = 3.4V, f = 0 — 2.5 mA VCC = Max., A and B pins open Control Input Toggling at 50% Duty Cycle — 0.25 mA/MHz 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 tPLH tPHL tPZL tPZH tPLZ tPHZ Parameter Data Propagation Delay (2,4) Ax to Bx, Bx to Ax Switch Turn-on Delay BEA, BEB to Ax, Bx Switch Turn-off Delay (2) BEA, BEB to Ax, Bx Min. (1) Typ. Max. Unit — — 0.12 (3) ns 1.5 — 6.5 ns 1.5 — 5.5 ns NOTES: 1. Minimums are guaranteed but not production tested. 2. This parameter is guaranteed but not production tested. 3. The time constant for the switch alone is of the order of 0.12ns for CL = 50pF. 4. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. 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 IDTQS3LR384 HIGH-SPEED CMOS 10-BIT LOW POWER, LOW RESISTANCE BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX XX Device Type Package X Process Blank Industrial (-40°C to +85°C ) SO Q Sm all Outline IC (SO 24-2) Quarter Size Outline Package (SO24-8) 3LR384 High Speed CM OS 10-Bit Low Power, Low Resistance 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* *To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. 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