IDTQS3VH800QG8

IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS IDTQS3VH800 FEATURES: 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 • B port precharged to user-selectable VBIAS 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 and TSSOP packages The QS3VH800 HotSwitch is a high bandwidth, 10-bit bus switch. The QS3VH800 has very low ON resistance, resulting in under 250ps propagation delay through the switch. The QS3VH800 precharges the B port to a user selectable bias voltage (VBIAS) to minimize live insertion noise. The switches can be turned ON under the control of the LVTTL-compatible Output Enable (OE) signal for bidirectional data flow with no added delay or ground bounce. 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 QS3VH800 ideal for high performance communication applications. The QS3VH800 is characterized for operation from -40°C to +85°C. APPLICATIONS: • • • • • Hot-swapping 10/100 Base-T, Ethernet LAN switch Low distortion analog switch Replaces mechanical relay ATM 25/155 switching FUNCTIONAL BLOCK DIAGRAM VBIAS A0 B0 A9 B9 OE The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE SEPTEMBER 2008 1 c 2008 Integrated Device Technology, Inc. DSC-5880/16 IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION OE 1 24 VCC A0 2 23 B0 A1 3 22 B1 A2 4 21 B2 A3 5 20 B3 A4 6 19 B4 A5 7 18 B5 A6 8 17 B6 A7 9 16 B7 A8 10 15 B8 A9 11 14 B9 GND 12 INDUSTRIAL TEMPERATURE RANGE 13 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 VBIAS Parameter (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = (1) CIN Control Inputs CI/O Quickswitch Channels (Switch OFF) Typ. Max. Unit 3 5 pF 4 6 pF 8 12 pF VBIAS = OPEN Quickswitch Channels (Switch ON) CI/O QSOP/ TSSOP TOP VIEW NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION Pin Names I/O Description OE I Bus Switch Enable VBIAS I Bias Voltage A 0 - A9 I/O Bus A B 0 - B9 I/O Bus B FUNCTION TABLE(1) OE B0 - B9 Function L A0 - A9 Connect H VBIAS Disconnect A0 - A9 = Z NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedence 2 IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS 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 VBIAS Parameter Test Conditions Input HIGH Voltage Min. Typ.(1) Max. Unit V Guaranteed Logic HIGH VCC = 2.3V to 2.7V 1.7 — — for Control Inputs VCC = 2.7V to 3.6V 2 — — Input LOW Voltage Guaranteed Logic LOW VCC = 2.3V to 2.7V — — 0.7 for Control Inputs VCC = 2.7V to 3.6V — — 0.8 Bias Voltage VCC = 3V to 3.6V, IO = 0 0 — 5 VCC = 2.3V to 2.7V, IO = 0 V V 0 — 3.3 0.25 — — mA 0V ≤ VIN ≤ VCC — — ±1 µA IO Bias Current(2) VCC = 3V, VBIAS = 2.4V, VO = 0, OE = HIGH IIN Input Leakage Current (Control Inputs) 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 RON Switch ON Resistance VCC = 2.3V VIN = 0V ION = 30mA — 6 8 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 NOTES: 1. Typical values are at VCC = 3.3V and TA = 25°C. 2. Bias resistance is 5kΩ typical at VCC = 3.3V; VBIAS = 2.4V, 25°C. TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V 16 14 RON (ohms) 12 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 IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS 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 ∆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 (4) VCC = 3.3V, A and B Pins Open, Control Inputs 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 12 10 ICCD (mA) 8 6 4 2 0 0 2 4 6 8 10 12 ENABLE FREQUENCY (MHz) 4 14 16 18 20 IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40°C to +85°C VCC = 2.5 ± 0.2V (1) Symbol tPLH tPHL Parameter Data Propagation Delay(2,3) Ax to Bx or Bx to Ax Test Conditions tPZL Switch Turn-On Delay VBIAS = 3V tPZH OE to Ax to Bx VBIAS = GND tPLZ Switch Turn-Off Delay VBIAS = 3V tPHZ OE to Ax to Bx VBIAS = GND fOE Operating Frequency - Enable(2,5) VBIAS = OPEN VCC = 3.3 ± 0.3V (1) Min. (4) ⎯ Max. 0.2 Min. (4) ⎯ Max. 0.2 Unit ns 1.5 8 1.5 7.5 ns 1.5 7 1.5 7 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 OE control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD). 5 IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE SOME APPLICATIONS FOR HOTSWITCH PRODUCTS NFET 0 to +5V Vcc = 3.3V +6.5V CHARGE PUMP OE 0 to +5V DRIVER SINGLE HOT SWITCH Rail-to-Rail Switching PHY 3VH SWITCH 4.5VPP LOGIC SIDE 10Mbps to 100Mbps Z = 100 Ω Z = 100 Ω >100m 4.5VPP TWISTED PAIR LOGIC SIDE 2VPP Fast Ethernet Data Switching (LAN Switch) ZERO DOWN TIME SYSTEM PLUGGABLE CARD/ LIVE SYSTEM CARD I/O ON CARD LOGIC CONNECTOR QS3VHXXX CPU CARD I/O ON CARD LOGIC CONNECTOR QS3VHXXX RAM BUS Hot-Swapping 6 IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS (1) (2) Symbol VCC = 3.3V ± 0.3V VCC = 2.5V ± 0.2V Unit VLOAD 6 2 x Vcc V VIH 3 Vcc V VT 1.5 VCC/2 V VLZ 300 150 mV VHZ 300 150 mV CL 50 30 pF SAME PHASE INPUT TRANSITION tPLH tPHL tPLH tPHL OUTPUT VIH VT 0V VOH VT VOL VIH VT 0V OPPOSITE PHASE INPUT TRANSITION Propagation Delay VLOAD VCC 500Ω Pulse(1, 2) Generator VIN CONTROL INPUT GND tPZL VOUT D.U.T. RT DISABLE ENABLE Open OUTPUT SWITCH NORMALLY CLOSED LOW tPZH OUTPUT SWITCH NORMALLY OPEN HIGH 500Ω CL tPLZ VLOAD/2 VT tPHZ VT 0V VIH VT 0V VLOAD/2 VOL + VLZ VOL VOH VOH -VHZ 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 IDTQS3VH800 2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION Datasheet Document History 09/01/08 Pg. 4, 8 Revise ICCQ Typ. and Max. Remove non green package version and updated the ordering information by removing the “IDT” notation. 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