IDTQS32253 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: − − − − − − − − Enhanced N channel FET with no inherent diode to Vcc 5Ω bidirectional switches connect inputs to outputs 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 25Ω resistors for low noise Available in QSOP and SOIC Packages The QS32253 is a high-speed CMOS TTL-compatible dual 4:1 multiplexer/demultiplexer with 3-state outputs. The QS32253 is function and pinout compatible version of the 74F253, 74FCT253, and the 74ALS/AS/ LS253 dual 4:1 multiplexers. The QS32253 has 25Ω resistors to reduce ground bounce noise. Mux/Demux devices provide an order of magnitude faster speed than equivalent logic devices. The QS32253 is characterized for operation at -40°C to +85°C. APPLICATIONS − − − − − − IDTQS32253 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 INDUSTRIAL TEMPERATURE RANGE APRIL 2000 1 c 1999 Integrated Device Technology, Inc. DSC-5749/- IDTQS32253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION Symbol EA 1 16 VCC S1 2 15 EB I3A 3 14 S0 I2A 4 I3B I1A 5 SO 16-1 13 SO 16-7 12 I0A 6 11 I1B YA 7 10 I0B G ND 8 9 YB (1) VTERM(2) Description Supply Voltage to Ground Max. – 0.5 to +7 Unit 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 120 mA PMAX Maximum Power Dissipation (TA = 85°C) 0.5 W TSTG Storage Temperature – 65 to +150 °C 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. I2B CAPACITANCE (TA = +25OC, f = 1.0MHz, VIN = 0V, VOUT = 0V) Pins Control Pins SOIC/ QSOP TOP VIEW Typ. 4 Max. (1) 5 Unit pF Quickswitch Channels Demux 5 7 pF (Switch OFF) Mux 14 16 pF NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names Ixx I/O I Description Data Inputs S0, S1 I Select Inputs EA, EB I Enable Inputs YA, YB O Data Outputs FUNCTION TABLE(1) Enable EA Select 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 IDTQS32253 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 VIH Parameter Input HIGH Voltage VIL Input LOW Voltage Inputs) (2) Test Conditions Guaranteed Logic HIGH for Control Pins Min. 2 Typ.(1) — Max. — Unit V Guaranteed Logic LOW for Control Pins — — 0.8 V 0V ≤ VIN ≤ Vcc — — ±1 µA IIN Input Leakage Current (Control IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ Vcc — — ±1 µA RON Switch ON Resistance Vcc = Min., VIN = 0V, ION = 30mA 20 28 40 Ω RON Switch ON Resistance Vcc = Min., VIN = 2.4V, ION = 15mA 20 35 48 Ω VP Pass Voltage (2) VIN = Vcc = 5V, IOUT = -5µA 3.7 4 4.2 V 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 80 R ON (ohms) 70 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5 V IN (Volts) 3 2.0 2.5 3.0 3.5 IDTQS32253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX 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) Max. 3 Unit µA VCC = Max., VIN = 3.4V, f = 0 1.5 mA VCC = Max., I and Y pins open Control Inputs 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). 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 tPLH tPHL tPZL tPZH tPZL tPZH tPLZ tPHZ Parameter Data Propagation Delay (2,3) In to Y Switch Turn-on Delay Sn to Y Switch Turn-on Delay EN to Y Switch Turn-off Delay (2) EN to Y, Sn to Y Min. (1) Typ. — — 0.5 — 7 ns 0.5 — 7 ns 0.5 — 6 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 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 1.25ns 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 IDTQS32253 HIGH-SPEED CMOS QUICKSWITCH DUAL 4:1 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX XX Device Type Package X Process Blank Industrial (-40°C to +85°C) Q SO Quarter Size Outline Package (SO16-7) Small Outline IC (SO16-1) 32253 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* *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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