IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH FEATURES: IDTQS3VH16212 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 500 MHz • LVTTL-compatible control Inputs • Undershoot Clamp Diodes on all switch and control Inputs • Low I/O capacitance, 4pF typical • Available in SSOP and TSSOP packages The QS3VH16212 Bus Exchange HotSwitch with 24-bits is a high bandwidth bus switch. The QS3VH16212 has very low ON resistance, resulting in under 250ps propagation delay through the switch. The device operates as a 24-bit bus switch or a 12-bit bus exchanger, which provides data exchanging between the four signal ports through the data-select (S0 - S2) terminals. In the OFF and ON states, the switches are 5V-tolerant. 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 QS3VH16212 ideal for high performance communications applications. The QS3VH16212 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 1 of 12 Channels 1A1 1B1 1A2 1B2 Flow Control S0 S1 S2 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE MARCH 2002 1 c 2002 Integrated Device Technology, Inc. DSC-5884/5 IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION S0 1 56 S1 1A1 2 55 S2 1A2 3 54 1B1 2A1 4 53 2A2 5 52 Symbol Description Max. Unit VTERM(2) Supply Voltage to Ground – 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 –3 V 120 mA -65 to +150 °C VAC AC Input Voltage (pulse width ≤20ns) 1B2 IOUT DC Output Current (max. current/pin) 2B1 TSTG Storage Temperature 3A1 6 51 2B2 3A2 7 50 3B1 GND 8 49 GND 4A1 9 48 3B2 4A2 10 47 4B1 5A1 11 46 4B2 5A2 12 45 5B1 6A1 13 44 5B2 6A2 14 43 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 o (TA = +25 C, f = 1MHz, VIN = 0V, VOUT = 0V) Symbol Parameter(1) 6B1 CIN Control Inputs 3 5 pF CI/O Quickswitch Channels (Switch OFF) 6 8 pF CI/O Quickswitch Channels (Switch ON) 12 16 pF Typ. 7A1 15 42 6B2 7A2 16 41 7B1 VCC 17 40 7B2 8A1 18 39 8B1 GND 19 38 GND 8A2 20 37 8B2 9A1 21 36 9B1 Pin Names I/O 9A2 22 35 9B2 1Ax - 12Ax I/O Bus A 10A1 23 34 10B1 1Bx - 12Bx I/O Bus B 10A2 24 33 10B2 11A1 25 32 11B1 11A2 26 31 11B2 12A1 27 30 12B1 12A2 28 29 12B2 Max. NOTE: 1. This parameter is guaranteed but not production tested. PIN DESCRIPTION S0 - S2 Description I Data Select FUNCTION TABLE(1) SSOP/ TSSOP TOP VIEW S2 S1 S0 xA1 xA2 Function L L L L L Z Z Disconnect H xB 1 Z xA1 to xB1 L H L xB 2 Z xA1 to xB2 L H H Z xB 1 xA2 to xB1 H L L Z xB 2 xA2 to xB2 H L H Z Z H H L xB 1 xB 2 xA1 to xB1, xA2 to xB2 H H H xB 2 xB 1 xA1 to xB2, xA2 to xB1 NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedence 2 Disconnect Unit IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE(1) Following Conditions Apply Unless Otherwise Specified: Industrial: TA = –40°C to +85°C, VCC = 3.3V ± 0.3V Symbol VIH Parameter Test Conditions Input HIGH Voltage VIL Input LOW Voltage IIN Input Leakage Current (Control Inputs) IOZ IOFF 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 — — Guaranteed Logic HIGH VCC = 2.3V to 2.7V — — 0.7 for Control Inputs VCC = 2.7V to 3.6V — — 0.8 — — ±1 µA Off-State Current (Hi-Z) — — ±1 µA Data Input/Output Power Off Leakage VIN or VOUT 0V to 5V, VCC = 0V — — ±1 µA ION = 30mA — 6 8 (Typ. 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 Switch ON Resistance VIN = 0V NOTE: 1. Typical values are at VCC = 3.3V and TA = 25°C, unless otherwise noted. TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V 16 R ON (ohms) V ≤ VCC 0V ≤ VOUT ≤ 5V, Switches OFF 0V ≤ VIN VCC = 2.3V RON Min. 14 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 IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Parameter Test Conditions(1) ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 ∆ICC Power Supply Current ICCD Dynamic Power Supply Current(4) Symbol (2,3) per Input HIGH VCC = Max., VIN = 3V, f = 0 per Control Input VCC = 3.3V, A and B Pins Open, Control Inputs Min. Typ. Max. Unit — 1.5 3 mA — — 30 µA 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 20 18 16 ICCD (mA) 14 12 10 8 6 4 2 0 0 2 4 6 8 10 12 ENABLE FREQUENCY (MHz) 4 14 16 18 20 IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40°C to +85°C VCC = 2.5 ± 0.2V (1) VCC = 3.3 ± 0.3V (1) Max. Min. (4) Max. Unit tPLH tPHL Data Propagation Delay(2,3) xAx to xBx or xBx to xAx ⎯ 0.2 ⎯ 0.2 ns tPZH tPZL Switch Turn-On Delay Sx to xAx, xBx 1.5 11.5 1.5 11 ns tPHZ tPLZ Switch Turn-Off Delay Sx to xAx, xBx 1.5 11 1.5 10.5 ns tPSX Propagation Delay Sx to xAx, xBx 1.5 11 1.5 9 ns fSx Operating Frequency - Enable (2,5) ⎯ 10 ⎯ 20 MHz Symbol Parameter Min. (4) 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 Sx control input (pass voltage > VCC, VIN = 5V, RLOAD > 1MΩ, no CLOAD). 5 IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH 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 4.5V PP LOGIC SIDE 10M bps to 100Mbps Z = 100 Ω Z = 100 Ω >100m 4.5V PP TWISTED PAIR LOGIC SID E 2V PP Fast Ethernet Data Switching (LAN Switch) ZERO DOWN TIME SYSTEM PLUGGABLE CARD/ LIVE SYSTEM CARD I/O ON CARD LOGIC CONN ECTOR QS3VH XXX CARD I/O ON CARD LOGIC C ON NEC TOR QS3VH XX X Hot Swapping 6 CPU RAM BUS IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS 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 SAME PHASE INPUT TRANSITION VIH 3 Vcc V OUTPUT VT 1.5 VCC/2 V VLZ 300 150 mV VHZ 300 150 mV CL 50 30 pF tPLH tPHL tPLH tPHL 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 Test Circuits for All Outputs SWITCH POSITION tPLZ/tPZL VLOAD tPHZ/tPZH GND tPD Open tPHZ VT 0V Enable and Disable Times NOTES: 1. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns. 2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2ns; tR ≤ 2ns. Switch VLOAD/2 VT VLOAD/2 VOL + VLZ VOL VOH VOH -VHZ 0V NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. Test tPLZ VIH VT 0V 7 IDTQS3VH16212 2.5V / 3.3V 24-BIT BUS EXCHANGE HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package PV PA PAG Shrink Small Outline Package Thin Shrink Small Outline Package TSSOP - Green 3VH16212 2.5V / 3.3V 24-Bit Bus Exchange High Bandwidth Bus Switch 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