IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS 2.5V/3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH FEATURES: IDTQS3VH257 DESCRIPTION: • N channel FET switches with no parasitic diode to VCC – Isolation under power-off conditions – No DC path to VCC or GND – 5V tolerant in OFF and ON state • 5V tolerant I/Os Ω typical • Low RON - 4Ω • Flat RON characteristics over operating range • Rail-to-rail switching 0 - 5V • Bidirectional dataflow with near-zero delay: no added ground bounce • Excellent RON matching between channels • VCC operation: 2.3V to 3.6V • High bandwidth - up to 500MHz • LVTTL-compatible control Inputs • Undershoot Clamp Diodes on all switch and control Inputs • Low I/O capacitance, 4pF typical • Available in QSOP, SOIC, and TSSOP packages The QS3VH257 HotSwitch Quad 2:1 multiplexer/demultiplexer is a high bandwidth bus switch. The QS3VH257 has very low ON resistance, resulting in under 250ps propagation delay through the switch. The Select (S) input controls the data flow. The multiplexers/demultiplexers are enabled when the Enable (E) input is low. In the ON state, the switches can pass signals up to 5V. In the OFF state, the switches offer very high impedence at the terminals. The combination of near-zero propagation delay, high OFF impedance, and over-voltage tolerance makes the QS3VH257 ideal for high performance communication applications. The QS3VH257 is characterized for operation from -40°C to +85°C. APPLICATIONS: • • • • • Hot-swapping Multiplexing/demultiplexing Low distortion analog switch Replaces mechanical relay ATM 25/155 switching FUNCTIONAL BLOCK DIAGRAM S E I0 A YA I1 A I0 B YB I1 B I0 C YC I1 C I0 D YD I1 D The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE FEBRUARY 2014 1 c 2014 Integrated Device Technology, Inc. DSC-5596/15 IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION S 1 16 VCC I0A 2 15 E I1A 3 14 I0D YA 4 13 I1D I0B 5 12 YD I1B 6 11 I0C YB GND 7 8 10 9 I1C YC Symbol Description VTERM(2) SupplyVoltage to Ground Max Unit –0.5 to +4.6 V VTERM(3) DC Switch Voltage VS –0.5 to +5.5 V VTERM(3) DC Input Voltage VIN –0.5 to +5.5 V VAC AC Input Voltage (pulse width ≤20ns) –3 V IOUT DC Output Current (max. sink current/pin) 120 mA 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 . CAPACITANCE 0V) Symbol (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = Parameter(1) Typ. CIN Control Inputs CI/O Quickswitch Channels (Switch OFF) QSOP/ SOIC/ TSSOP TOP VIEW CI/O Quickswitch Channels (Switch ON) Demux Max. 3 5 pF 4 6 pF Mux 7 9 Demux 10 15 Mux 10 15 NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names I/O Ixx I Data Inputs S I Select Input Description E I Enable Input YA - YD O Data Outputs FUNCTION TABLE(1) Inputs Outputs E S YA YB YC YD Function H X Z Z Z Z Disable L L I0A I0B I0C I0D Select 0 L H I1A I1B I1C I1D Select 1 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedence 2 Unit pF IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH 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 = 3.3V ±0.3V Symbol VIH VIL Parameter Test Conditions Input HIGH Voltage Input LOW Voltage Min. Typ.(1) Max. Guaranteed Logic HIGH VCC = 2.3V to 2.7V 1.7 — — for Control Inputs VCC = 2.7V to 3.6V 2 — — Guaranteed Logic LOW VCC = 2.3V to 2.7V — — 0.7 for Control Inputs VCC = 2.7V to 3.6V — — 0.8 IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC — — ±1 Unit V V μA IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ 5V, Switches OFF — — ±1 μA IOFF Data Input/Output Power Off Leakage VIN or VOUT 0V to 5V, VCC = 0V — — ±1 μA VCC = 2.3V VIN = 0V ION = 30mA — 6 8 RON Switch ON Resistance Typical at VCC = 2.5V VIN = 1.7V ION = 15mA — 7 9 VCC = 3V VIN = 0V ION = 30mA — 4 6 VIN = 2.4V ION = 15mA — 5 8 NOTE: 1. Typical values are at VCC = 3.3V and TA = 25°C. TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V 16 14 RON 12 (ohms) 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 2.5 VIN (Volts) 3 3.0 3.5 4.0 4.5 5.0 Ω IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol Test Conditions(1) Parameter Min. Typ. Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 — 2 4 mA ΔICC Power Supply Current (2,3) per Input HIGH VCC = Max., VIN = 3V, f = 0 per Control Input — — 30 μA ICCD Dynamic Power Supply Current VCC = 3.3V, A and B Pins Open, Control Inputs (4) See Typical ICCD vs Enable Frequency graph below Toggling @ 50% Duty Cycle NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per input driven at the specified level. Mux/demux pins do not contribute to ΔIcc. 3. This parameter is guaranteed but not tested. 4. This parameter represents the current required to switch internal capacitance at the specified frequency. The mux/demux inputs do not contribute to the Dynamic Power Supply Current. This parameter is guaranteed but not production tested. TYPICAL ICCD vs ENABLE FREQUENCY CURVE AT VCC = 3.3V 8 ICCD (mA) 6 4 2 0 0 2 4 6 8 10 12 ENABLE FREQUENCY (MHz) 4 14 16 18 20 IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40°C to +85°C VCC = 2.5 ± 0.2V (1) Symbol tPLH tPHL tSEL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Parameter Data Propagation Delay(2,3) Yx to Ixx or Ixx to Yx Select Time S to Yx Enable Time S to Ixx Disable Time S to Ixx Enable Time E to Yx or Ixx Disable Time E to Yx or Ixx fEorS Operating Frequency - Enable(2,5) Min. (4) VCC = 3.3 ± 0.3V (1) ⎯ Max. 0.2 Min. (4) ⎯ Max. 0.2 Unit ns 1.5 9 1.5 8 ns 1.5 9 1.5 9 ns 1.5 8 1.5 8 ns 1.5 9 1.5 8 ns 1.5 8 1.5 8 ns ⎯ 10 ⎯ 20 MHz NOTES: 1. See Test Conditions under TEST CIRCUITS AND WAVEFORMS. 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 0.2ns at 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. Minimums are guaranteed but not production tested. 5. Maximum toggle frequency for S or E control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD). 5 IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE SOME APPLICATIONS FOR HOTSWITCH PRODUCTS NFET 0 to +5V Vcc = 3.3V OE 0 to +5V +6.5V CHARGE PUM P DRIVER SINGLE HOT SW ITCH Rail-to-Rail Switching M ULTIPLEXING CONTROL CIRCUITRY M EM ORY CPU M EM ORY Multiplexing / Demultiplexing ZERO DOW N TIM E SYSTEM PLUG GABLE CAR D/ LIVE SYSTEM CARD I/O ON CARD LOGIC CONNECTOR QS3VH XXX CARD I/O ON CARD LOGIC CONNECTOR QS3VH XXX CPU RAM BUS Hot-Swapping 6 IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS Symbol VCC = 3.3V ± 0.3V VCC = 2.5V ± 0.2V Unit VLOAD 6 2 x Vcc V VIH 3 Vcc V (1) (2) VT 1.5 VCC/2 V VLZ 300 150 mV VHZ 300 150 mV CL 50 30 pF SAME PHASE INPUT TRANSITION tPLH tPHL t PLH t PHL OUTPUT V IH VT 0V V OH VT V OL V IH VT 0V OPPOSITE PHASE INPUT TRANSITION Propagation Delay V LOAD V CC 500 Ω (1, 2) Pulse Generator V IN CONTROL INPUT GND t PZL V OUT D.U.T. RT DISABLE ENABLE Open OUTPUT SW ITCH NORMALLY CLO SED LOW t PZH OUTPUT SW ITCH NORMALLY OPEN HIGH 500 Ω CL t PLZ V IH VT 0V V LOAD/2 V LO A D /2 VT VOL VOL tPHZ + VT VOH V O H -V H Z 0V 0V Test Circuits for All Outputs NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. Enable and Disable Times DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. NOTES: 1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns. 2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns. SWITCH POSITION Test Switch tPLZ/tPZL VLOAD tPHZ/tPZH GND tPD Open 7 V LZ IDTQS3VH257 2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION QS XXXXX XX Device Type Package X Blank 8 Tube or Tray Tape and Reel S1G QG PAG SOIC - Green QSOP - Green TSSOP - Green 3VH257 2.5V / 3.3V Quad 2:1 Mux/Demux High Bandwidth Bus Switch Datasheet Document History 09/01/08 Pg. 4, 8 02/24/14 Pg. 8 Revise ICCQ Typ. and Max. Remove non green package version and updated the ordering information by removing the “IDT” notation. Updated the Ordering Information by Adding Tape and Reel information. CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 8 for Tech Support: [email protected]