IDT74CBTLVR3384 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE 10-BIT BUS SWITCH IDT74CBTLVR3384 FEATURES: DESCRIPTION: * * * * * The CBTLVR3384 is a ten bit high-speed bus switch. It adds an internal series resistor with each switch to reduce reflection noise in high speed applications. When closed, the switch acts as a source (series) termination for the driver connected to it. The device is organized as dual 5-bit bus switches with separate outputenable (OE) inputs, to allow use as two 5-bit bus switches or one 10-bit bus switch. When OE is low, the associated 5-bit bus switch is on and A port is connected to B port. When OE is high, the switch is open, and a high-impedance state exists between the two ports. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. Isolation Under Power-Off Conditions Over-voltage tolerant Latch-up performance exceeds 100mA VCC = 2.3V - 3.6V, normal range ESD >2000V per MIL-STD-883, Method 3015; >200V using machine model (C = 200pF, R = 0) * Available in SSOP, QSOP, and TSSOP packages APPLICATIONS: * 3.3V High Speed Bus Switching and Bus Isolation FUNCTIONAL BLOCK DIAGRAM 3 1A1 11 1A5 SW SW 2 10 SIMPLIFIED SCHEMATIC, EACH SWITCH 1B1 1B5 1 1OE B A 2A1 2A5 2OE 14 22 SW SW 15 10 2B1 OE 2B5 13 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-5395/9 IDT74CBTLVR3384 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol Description VCC 24 1OE 1 1B1 2 23 2B5 1A1 3 22 2A5 VI VCC 1A2 4 21 2A4 1B2 5 20 2B4 1B3 6 19 2B3 1A3 7 18 2A3 1A4 8 17 2A2 1B4 9 16 2B2 1B5 10 15 2B1 1A5 11 14 2A1 GND 12 13 2OE IIK Max. Unit Supply Voltage Range -0.5 to 4.6 V Input Voltage Range -0.5 to 4.6 V Continuous Channel Current 128 mA Input Clamp Current, VI/O < 0 -50 mA -65 to +150 C Storage Temperature Range TSTG NOTE: 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. FUNCTION TABLE(1) Inputs SSOP/ QSOP/ TSSOP TOP VIEW 1OE 2OE 1B1-1B5 Inputs/Outputs 2B1-2B5 L L 1A1-1A5 2A1-2A5 L H 1A1-1A5 Z H L Z 2A1-2A5 H H Z Z NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High Impedance OPERATING CHARACTERISTICS(1) Symbol Parameter VCC Supply Voltage VIH High-Level Control Input Voltage VIL Low-Level Control Input Voltage TA Operating Free-Air Temperature Test Conditions Min. Max. Unit 2.3 3.6 V VCC = 2.3V to 2.7V 1.7 -- V VCC = 2.7V to 3.6V 2 -- VCC = 2.3V to 2.7V -- 0.7 VCC = 2.7V to 3.6V NOTE: 1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. 2 -- 0.8 -40 +85 V C IDT74CBTLVR3384 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C Symbol VIK Parameter Test Conditions Min. Typ.(1) Max. Unit Control Inputs, Data I/O VCC = 3V, II = -18mA -- -- -1.2 V Control Inputs VCC = 3.6V, VI = VCC or GND -- -- 1 A Data I/O VCC = 3.6V, VO = 0V or 3.6V switch disabled -- -- 5 A IOFF VCC = 0V, VI or VO = 0V to 3.6V -- -- 10 A ICC VCC = 3.6V, IO = 0, VI = VCC or GND -- -- 10 A II I OZ ICC(2) Control Inputs VCC = 3.6V, one input at 3V, other inputs at VCC or GND -- -- 300 A CI Control Inputs VI = 3V or 0 -- 4 -- pF VO = 3V or 0, OE = VCC -- 7 -- pF IO = 64mA -- 30 47 IO = 24mA -- 30 47 VI = 1.7V IO = 15mA -- 36 80 VI = 0 IO = 64mA -- 30 42 IO = 24mA -- 30 42 IO = 15mA -- 32 47 CIO(OFF) Max. at VCC = 2.3V VI = 0 Typ. at VCC = 2.5V RON(3) VCC = 3V VI = 2.4V NOTES: 1. Typical values are at 3.3V, +25C ambient. 2. The increase in supply current is attributable to each input that is at the specified voltage level rather than VCC or GND. 3. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by the lower of the voltages of the two (A or B) terminals. SWITCHING CHARACTERISTICS VCC = 2.5V 0.2V Symbol tPD(1) Parameter Propagation Delay VCC = 3.3V 0.3V Min. Max. Min. Max. Unit -- 0.9 -- 1.5 ns 1 6 1 5.3 ns 1 5.5 1 5.5 ns A to B or B to A tEN Output Enable Time OE to A or B tDIS Output DisableTime OE to A or B NOTE: 1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance when driven by an ideal voltage source (zero output impededance). 3 IDT74CBTLVR3384 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS (1) (2) Symbol VCC = 3.3V0.3V VCC = 2.5V0.2V 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 500 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 500 CL Test Circuits for All Outputs SWITCH POSITION Switch VLOAD tPHZ/tPZH GND tPD Open tPHZ VT 0V Enable and Disable Times 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. Test 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. tPLZ/tPZL tPLZ VIH VT 0V 4 IDT74CBTLVR3384 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION CBTLV X IDT XX Temp. Range Family XXX Device Type XX Package CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 PY Q PG Shrink Small Outline Package Quarter-size Small Outline Package Thin Shrink Small Outline Package 3384 Low-Voltage 10-Bit Bus Switch R 25 series dampening resistors on A and B ports 74 -40C to +85C for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 5 for Tech Support: logichelp@idt.com