IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS 2.5V / 3.3V 20-BIT 2-PORT, HIGH BANDWIDTH BUS SWITCH FEATURES: IDTQS3VH16210 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 QS3VH16210 HotSwitch with 20-bit flow-though pin is a high bandwidth bus switch. The QS3VH16210 has very low ON resistance, resulting in under 250ps propagation delay through the switch. The switches are controlled by active low enable (xOE) controls. The QS3VH16210 is organized as a dual 10-bit, 2-port bus switch with separate, xOE control inputs. In the OFF and ON states, the switches are 5V-tolerant. In the OFF state, the switches offer very high impedance at the terminals. The combination of near-zero propagation delay, high OFF impedance, and over-voltage tolerance makes the QS3VH16210 ideal for high performance communications applications. The QS3VH16210 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 1A 1 1 A 10 1B 1 2A 1 1 B 10 2 A 10 1O E 2B 1 2 B 10 2O E 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-5881/4 IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, HIGH BANDWIDTH BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION NC 1 48 1OE 1A 1 2 47 2OE 1A 2 3 46 1A 3 4 45 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 1B 1 AC Input Voltage (pulse width ≤20ns) IOUT DC Output Current (max. current/pin) 1B 2 TSTG Storage Temperature 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. 1A 4 5 44 1B 3 1A 5 6 43 1B 4 1A 6 7 42 1B 5 GND 8 41 GND 1A 7 9 40 1B 6 1A 8 10 39 1B 7 1A 9 11 38 1B 8 1 A 10 12 37 1B 9 2A 1 13 36 1B 10 2A 2 14 35 2B 1 V CC 15 34 2B 2 2A 3 16 33 2B 3 GND 17 32 GND 2A 4 18 31 2B 4 2A 5 19 30 2B 5 Pin Names 2A 6 20 29 2B 6 xOE 2A 7 21 28 2B 7 1A1 - 1A10, 2A1 - 2A10 Bus A 1B1 - 1B10, 2B1 - 2B10 Bus B 2A 8 22 27 2B 8 2A 9 23 26 2B 9 2 A 10 24 25 2B 10 CAPACITANCE Symbol Parameter(1) o (TA = +25 C, f = 1MHz, VIN = 0V, VOUT = 0V) Typ. Max. Unit CIN Control Inputs 3 5 pF 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 Description Bus Enables (Active LOW) FUNCTION TABLE SSOP/ TSSOP TOP VIEW (EACH 10-BIT BUS SWITCH) (1) Control Input xOE Function L A port = B port H Disconnect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level 2 IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, 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 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 — V — 0.8 — — ±1 µA Off-State Current (Hi-Z) ≤ VCC 0V ≤ VOUT ≤ 5V, Switches OFF — — ±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 0V ≤ VIN VCC = 2.3V RON Min. Switch ON Resistance VIN = 0V Ω 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 14 (ohms) 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 2.5 V IN (Volts) 3 3.0 3.5 4.0 4.5 5.0 IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, 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 Min. Typ. Max. Unit — 1.5 3 mA — — 30 µA VCC = Max., VIN = 3V, f = 0 per Control Input 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 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 IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, 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) A to B or B to A ⎯ 0.2 ⎯ 0.2 ns tPZH tPZL Switch Turn-On Delay xBE to xA or xB 1.5 9 1.5 9 ns tPHZ tPLZ Switch Turn-Off Delay xBE to xA or xB 1.5 8.5 1.5 8.5 ns fxOE Operating Frequency - Enable(2,5) ⎯ 7.5 ⎯ 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 xOE control input (pass voltage > VCC, VIN = 5V, RLOAD > 1MΩ, no CLOAD). 5 IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, 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 SIDE 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 IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, 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 IDTQS3VH16210 2.5V / 3.3V 20-BIT 2 PORT, 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 3VH16210 2.5V / 3.3V 20-Bit 2-Port, 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