IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX DESCRIPTION: FEATURES: • • • • • • • IDTQS3253 The QS3253 is a high-speed CMOS TTL-compatible dual 4:1 multiplexer/demultiplexer with 3-state outputs. The QS3253 is function and pinout compatible version of the 74F253, 74FCT253, and the 74ALS/AS/ LS253 dual 4:1 multiplexers. The low ON resistance of the QS3253 allows inputs to be connected to outputs without adding propagation delay and without generating additional ground bounce noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS3253 is characterized for operation at -40°C to +85°C. Enhanced N channel FET with no inherent diode to Vcc Ω bidirectional switches connect inputs to outputs 5Ω Pin compatible with the 74F253, 74FCT253, and 74FCT253T Zero propagation delay, zero ground bounce Undershoot clamp diodes on all switch and control inputs TTL-compatible control inputs Available in SOIC, QSOP, and S1 packages APPLICATIONS: • • • • • • Logic replacement Video, audio, graphics switching, muxing Hot-swapping, hot-docking Voltage translation (5V to 3.3V) Power conservation Bus funneling FUNCTIONAL BLOCK DIAGRAM S0 S1 EA EB I 0A I 1A YA I 2A I 3A I 0B I 1B YB I 2B I 3B The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE AUGUST 2001 1 c 2001 Integrated Device Technology, Inc. DSC-5755/3 IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION EA S1 1 ABSOLUTE MAXIMUM RATINGS(1) 16 2 15 VCC I3A 3 14 EB S0 I2A 4 13 I3B I1A 5 12 I2B I0A 6 11 I1B YA 7 10 I0B GND 8 9 YB Symbol Description VTERM(2) Max Unit VTERM(3) Supply Voltage to Ground –0.5 to +7 V 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 120 mA PMAX Maximum Power Dissipation (TA = 85°C) 0.5 W TSTG Storage Temperature –65 to +150 °C 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 = 1MHz, VIN = 0V, VOUT = 0V) SOIC/ QSOP/ S1 TOP VIEW Pins Typ. Max. (1) Unit Control Inputs 4 5 pF 5 14 7 16 pF Quickswitch Channels (Switch OFF) Demux Mux NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names I/O Description Ixx I Data Inputs S0 - S2 I Select Inputs EA, EB I Enable Input YA, YB O Data Output FUNCTION TABLE(1) Enable Select EA EB S1 S0 YA YB Function H X X X Hi-Z X Disconnected X H X X X Hi-Z Disconnected L L L L I0A I0B S1 - 0 = 0 L L L H I1A I1B S1 - 0 = 1 L L H L I2A I2B S1 - 0 = 2 L L H H I3A I3B S1 - 0 = 3 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care Z = High-Impedence 2 Outputs IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 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 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 IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 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 3 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 tPZL Switch Turn-on Delay tPZH 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 — 6.6 ns 0.5 — 6 ns 0.5 — 6 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 IDTQS3253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package SO Q QG S1 S1G Small Outline IC Quarter Size Outline Package QSOP - Green Quarter Size Outline Package S1 QSOP - Green 3253 High Speed CMOS Quickswitch Dual 4:1 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