IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS 2.5V / 3.3V 10-BIT FLOW-THROUGH PIN OUT, HIGH BANDWIDTH SWITCH FEATURES: IDTQS3VH2861 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 • 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 • LVTTL-compatible control Inputs • Undershoot Clamp Diodes on all switch and control Inputs • Low I/O capacitance, 4pF typical Ω resistors for low noise and line matching • 25Ω • Available in QSOP and TSSOP packages The QS3VH2861 HotSwitch is a high bandwidth bus switch with 10-bit flow-though pin out. The QS3VH2861, with 25Ω ON resistance and 1.35ns propagation delay, is ideal for line matching and low noise environments. The switches are controlled by active low enable (BE) control. 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 small propagation delay, high OFF impedance, and over-voltage tolerance makes the QS3VH2861 ideal for high performance communications applications. The QS3VH2861 is characterized for operation from -40°C to +85°C. APPLICATIONS: • • • • Hot-swapping Low distortion analog switch Replaces mechanical relay ATM 25/155 switching FUNCTIONAL BLOCK DIAGRAM A0 B0 A9 B9 BE The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE AUGUST 2002 1 c 2002 Integrated Device Technology, Inc. DSC-5897/8 IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION Symbol Max Unit SupplyVoltage to Ground –0.5 to +4.6 V DC Switch Voltage VS –0.5 to +5.5 V VTERM(3) DC Input Voltage VIN –0.5 to +5.5 V VTERM(2) VTERM(3) Description NC 1 24 VCC A0 2 23 BE VAC AC Input Voltage (pulse width ≤20ns) –3 V A1 3 22 B0 IOUT DC Output Current (max. sink current/pin) 120 mA A2 4 21 B1 TSTG Storage Temperature –65 to +150 °C A3 5 20 B2 A4 6 19 B3 A5 7 18 B4 A6 8 17 B5 A7 9 16 B6 A8 10 15 B7 A9 11 14 B8 GND 12 13 B9 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 (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V) Parameter(1) Symbol QSOP/ TSSOP TOP VIEW Typ. Max. Unit 3 5 pF CIN Control Inputs CI/O Quickswitch Channels (Switch OFF) 4 6 pF CI/O Quickswitch Channels (Switch ON) 8 12 pF NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names BE Description Active LOW Bus Enable A0 - A9 Bus A B0 - B9 Bus B FUNCTION TABLE(1) BE A0 - A9 Function H Z Disconnect L B0 - B9 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedence 2 Connect IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH 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 IIN Input Leakage Current (Control Inputs) Min. Typ.(1) Max. Unit Guaranteed Logic HIGH VCC = 2.3V to 2.7V 1.7 — — for Control Inputs VCC = 2.7V to 3.6V 2 — — V Guaranteed Logic LOW VCC = 2.3V to 2.7V — — 0.7 for Control Inputs VCC = 2.7V to 3.6V — — 0.8 0V ≤ VIN ≤ VCC — — ±1 µA V IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ 5V, Switches OFF — — ±1 µA I OFF Data Input/Output Power Off Leakage VIN or VOUT 0V to 5V, VCC = 0V — — ±1 µA VCC = 2.3V VIN = 0V ION = 30mA 18 27 39 RON Switch ON Resistance Typical at VCC = 2.5V VIN = 1.7V ION = 15mA 18 28 41 VCC = 3V VIN = 0V ION = 30mA 18 25 38 VIN = 2.4V ION = 15mA 18 26 40 Ω NOTE: 1. Typical values are at VCC = 3.3V and TA = 25°C. TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V 40 35 30 R ON (ohms) 25 20 15 10 5 0 0 0.5 1 1.5 2 V IN (Volts) 3 2.5 3 3.5 4 4.5 5 IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH 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 — 1 4 mA ∆ICC 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. A and B pins do not contribute to ∆Icc. 3. This parameter is guaranteed but not tested. 4. This parameter represents the current required to switch internal capacitance at the specified frequency. The A and B 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 14 12 ICCD (mA) 10 8 6 4 2 0 0 2 4 6 8 10 12 ENABLE FREQUENCY (MHz) 4 14 16 18 20 IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40°C to +85°C VCC = 2.5 ± 0.2V (1) Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ fBE Parameter Data Propagation Delay(2,3) Ax to Bx or Bx to Ax Switch Turn-On Delay BE to Ax or Bx Switch Turn-Off Delay BE to Ax or Bx Operating Frequency -Enable(2,5) Min. (4) VCC = 3.3 ± 0.3V (1) Max. 0.9 Min. (4) Max. 1.35 Unit ns 1.5 9 1.5 8 ns 1.5 7.5 1.5 7.5 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 1.35ns 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 BE control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD). 5 IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH INDUSTRIAL TEMPERATURE RANGE SOME APPLICATIONS FOR HOTSWITCH PRODUCTS NFET 0 to +5V Vcc = 3.3V OE 0 to +5V +6.5V CHARGE PUMP DRIVER SINGLE HOT SW ITCH Rail-to-Rail Switching ZERO DOW N TIME SYSTEM PLUG GABLE CARD/ LIVE SYSTEM CARD I/O ON CARD LOGIC CON NEC TOR QS3VH XXX CARD I/O ON CARD LOGIC CON NECTO R QS3VH XXX CPU RAM BUS Hot-Swapping 6 IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS Symbol VCC(1)= 3.3V ± 0.3V VCC(2)= 2.5V ± 0.2V Unit VLOAD 6 2 x Vcc V VIH 3 Vcc SAM E PHASE INPUT TRANSITION V VT 1.5 VCC/2 V VLZ 300 150 mV VHZ 300 150 mV CL 50 30 pF tPLH t PHL t PLH tPHL OUTPUT V IH VT 0V V OH VT V OL V IH VT 0V O PPOSITE PHASE INPUT TRANSITION Propagation Delay V LOAD V CC 500 Ω (1, 2) Pulse Generator V IN CONTRO L INPUT G ND t PZL V OUT D.U.T. RT DISABLE ENABLE Open OUTPUT SW ITCH NORMALLY CLO SED LOW tPZ H OUTPUT SW ITCH NORMALLY OPEN HIGH 500 Ω CL Test Circuits for All Outputs tPLZ V IH VT 0V V LOAD/2 V LO A D /2 VT VOL VOL t PHZ + VT VOH V O H -V H Z 0V 0V 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 IDTQS3VH2861 2.5V / 3.3V 10-BIT ACTIVE HIGH AND LOW ENABLE, HIGH BANDWIDTH SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package Q PA Quarter Size Outline Package Thin Shrink Small Outline Package 3VH2861 2.5V / 3.3V 10-Bit Flow Though Pin Out, High Bandwidth Switch DATA SHEET DOCUMENT HISTORY 8/6/2002 Updated according to PCN Logic-0206-11 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 8 for Tech Support: [email protected] (408) 654-6459