IDTQS3L2384 HIGH-SPEED LOW POWER CMOS 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH(R) PRODUCTS HIGH-SPEED LOW POWER CMOS 10-BIT BUS EXCHANGE SWITCH DESCRIPTION: FEATURES: - - - - - - Enhanced N channel FET with no inherent diode to Vcc Low propagation delay, zero ground bounce Ultra low power with 0.2A typical ICC Undershoot clamp diodes on all switch and control pins Two enables control five bits each Available in SOIC and QSOP Packages The QS3L2384 provides a set of ten high-speed CMOS TTL-compatible bus switches. The Bus Enable (BE) signals turn the switches on. Two bus enable signals are provided, one for each of the upper and lower five bits of the two 10-bit buses. The QS3L2384 adds an internal series resistor with each switch to reduce reflection noise in high speed applications. When closed, the switch acts as the source (series) termination for the driver connected to it. APPLICATIONS - - - - - - IDTQS3L2384 The QS3L2384 is characterized for operation at -40C to +85C. Hot-swapping, hot-docking 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 B5 BE A BE B INDUSTRIAL TEMPERATURE RANGE FEBRUARY 2000 1 c 1999 Integrated Device Technology, Inc. DSC-5771/- IDTQS3L2384 HIGH-SPEED LOW POWER CMOS 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS Symbol (1) VTERM(2) Description Supply Voltage to Ground Max. - 0.5 to +7 Unit V BEA 1 24 VCC VTERM(3) DC Switch Voltage VS - 0.5 to +7 V B0 2 23 B9 DC Input Voltage VIN - 0.5 to +7 V A0 3 22 A9 VTERM(3) VAC -3 V IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation (TA = 85C) 0.5 W TSTG Storage Temperature - 65 to +150 C A1 4 21 A8 B1 5 20 B8 B2 6 A2 7 SO24-2 19 SO24-8 18 A3 8 17 A6 B3 9 16 B6 B4 10 15 B5 A4 11 14 A5 GND 12 13 BEB B7 AC Input Voltage (pulse width 20ns) 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. A7 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 - B6 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 IDTQS3L2384 HIGH-SPEED LOW POWER CMOS 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 5% Typ.(1) -- Max. -- -- -- 0.8 V -- -- 1 A -- 0.01 1 A Vcc = Min., VIN = 0V, ION = 30mA 20 28 40 Vcc = Min., VIN = 2.4V, ION = 15mA 20 35 48 VIN = VCC = 5V, IOUT = -5A 3.7 4 4.2 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 RON Switch ON Resistance RON Switch ON Resistance VP Pass Voltage (2) Min. 2 NOTES: 1. Typical values are at VCC = 5.0V, TA = 25C. 2. Pass voltage is guaranteed but not production tested. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 80 R ON 70 (ohms) 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 Unit V IDTQS3L2384 HIGH-SPEED LOW POWER CMOS 10-BIT 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 A 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. Typical values are at VCC = 5.0V, TA = 25C 3. Per TLL driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to Icc. 4. 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 Industrial: TA = -40C to +85C, VCC = 5.0V 5% CLOAD = 50pF, RLOAD = 500 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. -- -- 1.5 -- 7.5 ns 1.5 -- 5.5 ns Max. 1.25 (3) Unit 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 1.25ns 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 IDTQS3L2384 HIGH-SPEED LOW POWER CMOS 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION ID TQS XXXXX XX Device Type Package X Process Blank Industrial (-40C to +85C) SO Q Small Outline IC (SO24-2) Quarter S ize Outline Package (SO24-8) 3L2384 High Speed Low Power C MOS 10-Bit 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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