IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX DESCRIPTION: FEATURES: • • • • • • • • The QS33X257 is a high-speed CMOS TTL-compatible 24:12 multiplexer/demultiplexer. The QS33X257 is functionally compatible to three of the QuickSwitch version of the 74F257, 74FCT257, and the 74ALS/AS/ LS257 Quad 2:1 multiplexers. The low ON resistance of the QS33X257 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. This part will be used in wide bus multiplexing where board space is at a premium. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS33X257 is characterized for operation at -40°C to +85°C. Enhanced N channel FET with no inherent diode to Vcc Bidirectional signal flow 24:12 Mux/Demux switches connect inputs to outputs Individual controls for each bank Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs TTL-compatible control inputs Available in 48-pin QVSOP package APPLICATIONS: • • • • • IDTQS33X257 Logic replacement Video, audio, graphics switching, muxing Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Bus funneling FUNCTIONAL BLOCK DIAGRAM S0 S2 E0 E2 I0 A I0 I YA YI I1 A I1 I I0 B I0 J YB YJ I1 B I1 J I0 C I0 K YC YK I1 C I1K I0 D I0 L YD YL I1 D I1 L S1 E1 I0E YE I1E I0 F YF I1F I0 G YG I1G I0 H YH I1H The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE MARCH 2000 1 c 2000 Integrated Device Technology, Inc. DSC-5763/1 IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) S0 1 48 VCC I0 A 2 47 E0 I1 A 3 46 I0 D 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 Max. Sink Current/Pin 120 mA PMAX Maximum Power Dissipation 0.5 W TSTG Storage Temperature –65 to +150 °C YA 4 45 I1 D I0 B 5 44 YD I1 B 6 43 I0 C YB 7 42 I1 C G ND 8 41 YC S1 9 40 VCC I0 E 10 39 E1 I1 E 11 38 I0 H YE 12 37 I1 H I0 F 13 36 YH I1 F 14 35 I0 G YF 15 34 I1 G G ND 16 33 YG S2 17 32 VCC I0 I 18 31 E2 I1 I 19 30 I0 L YI 20 29 I1 L Pin Names I/O I0 J 21 28 YL Ixx I/O I1 J 22 27 I0 K Sx I Select Input Ex I/O Enable Input Yx I/O Data Outputs YJ 23 26 I1 K G ND 24 25 YK QVSOP TOP VIEW 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) Pins Typ. Max.(1) Control Pins 4 5 pF pF Quickswitch Channels (Switch OFF) Demux 5 7 Mux 9 10 Unit NOTE: 1. This parameter is measured at characterization but not tested. PIN DESCRIPTION Description Data Inputs FUNCTION TABLE(1) Enable Outputs Ex Sx YA H X Z Z Z Z Disable L L I0A I0B I0C I0X Select 0 L H I1A I1B I1C I1X Select 1 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance 2 YB YC YD Function IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX 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 Output Current (Hi-Z) 0V ≤ VOUT ≤ VCC — — ±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 R ON (ohms) 16 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 IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX 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 9 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., I and Y 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). I and Y 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 I and Y 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 (2,3) tPHL Ix to Y tPZL Switch Turn-on Delay tPZH Sx to Y tPLZ Switch Turn-off Delay tPHZ Ex to Y tPLZ Switch Turn-off Delay (2) tPHZ Ex to Y, Sx to Y Min. (1) Typ. Max. Unit — 0.25 — ns 0.5 — 5.2 ns 0.5 — 4.8 ns 0.5 — 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 0.25ns 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 IDTQS33X257 HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX XX Device Type Package X Process Blank Industrial (-40°C to +85°C) Q1 QVSOP 33X257 High Speed CMOS Quickswitch 24:12 Mux/Demux 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