74CBTLV16800PAG

IDT74CBTLV16800 LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS IDT74CBTLV16800 FEATURES: DESCRIPTION: • • • • • • The CBTLV16800 provides 20-bits of high-speed bus switching with low on-state resistance of the switch allowing connections to be made with minimal propagation delay. The device also precharges the B port to a user-selectable bias voltage (BIASV) to minimize live-insertion noise. The CBTLV16800 is organized as dual 10-bit bus switches with two different output-enable (OE) control inputs. When OE is low, the corresponding 10-bit bus switch is on and port A is connected to port B. When OE is high, the switch is open, and a high impedance state exists between the two ports, and port B is precharged to BIASV through the equivalent of a 10-kΩ resistor. 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. 5Ω Ω A/B bi-directional switch 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 TSSOP and TVSOP packages APPLICATIONS: • 3.3V High Speed Bus Switching and Bus Isolation FUNCTIONAL BLOCK DIAGRAM 1 1A1 1A10 1OE 2A1 2 12 SW SW 46 36 SIMPLIFIED SCHEMATIC, EACH SWITCH BIASV 1B1 1B10 A B 48 13 SW 35 2B1 OE 2A10 2OE 24 SW 25 2B10 1 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE JUNE 2006 1 c 2006 Integrated Device Technology, Inc. DSC-5886/9 IDT74CBTLV16800 LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS PIN CONFIGURATION INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) Symbol BIASV 1 48 V Bias Voltage Range, VI –0.5 to 4.6 V Input Voltage Range –0.5 to 4.6 V BIASV VI 47 2OE 1A 2 3 46 1B 1 4 45 1B 2 1A 4 5 44 1B3 1A 5 6 43 1B4 1A 6 7 42 1B5 GND 8 41 GND 1A 7 9 40 1B6 1A 8 10 39 1B7 1A 9 11 38 1B8 1A 10 12 37 1B9 2A 1 13 36 1B 10 14 35 2B1 VCC 15 34 2B 2 2A 3 16 33 2B3 GND 17 32 2A 4 18 31 GND 2B 4 2A 5 19 30 2B 5 2A 6 20 29 2B 6 2A 7 21 28 2B 7 2A 8 22 27 2B 8 2A 9 23 26 2B9 24 25 2B10 2A 10 Unit 1OE 2 2A 2 Max. –0.5 to 4.6 Supply Voltage Range 1A 1 1A 3 Description VCC IIK TSTG Continuous Channel Current 128 mA Input Clamp Current, VI/O < 0 –50 mA –65 to +150 °C Storage Temperature Range 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 (EACH 10-BIT BUS SWITCH)(1) Input OE Inputs/Outputs L A-Port = B-Port H A-Port = Z B-Port = BIASV NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance TSSOP/ TVSOP TOP VIEW OPERATING CHARACTERISTICS(1) Symbol VCC BIASV VIH VIL TA Parameter Test Conditions Supply Voltage Bias Voltage High-Level Control Input Voltage Low-Level Control Input Voltage Min. Max. Unit 2.3 3.6 V 1.3 VCC 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 — 0.8 –40 +85 Operating Free-Air Temperature NOTE: 1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. 2 V °C IDT74CBTLV16800 LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = –40°C to +85°C Symbol VIK Parameter Test Conditions Min. Typ. Max. Unit Control Inputs, Data I/O VCC = 3V, II = –18mA — — –1.2 V Control Inputs VCC = 3.6V, VI = VCC or GND — — ±1 µA IOZ Data I/O VCC = 3.6V, VO = 0V or 3.6V switch disabled — — 5 µA I OFF A Port — — 10 µA | 0.25 | — — mA II VCC = 0V, VI or VO = 0V or 3.6V VCC = 3V, BIASV = 2.4V, VO = 0, OE = VCC IO VCC = 3.6V, IO = 0, VI = VCC or GND — — 10 µA ΔICC(1) ICC Control Inputs VCC = 3.6V, one input at 3V, other inputs at VCC or GND — — 300 µA CI Control Inputs VI = 3V or 0 — 4 — pF VO = 3V or 0, switch off, BIASV = open, OE = VCC — 6.5 — pF VI = 0 II = 64mA — 5 9 CIO(OFF) VCC = 2.3V Typ. at VCC = 2.5V RON II = 24mA — 5 9 VI = 1.7V II = 15mA — 25 35 VI = 0 II = 64mA — 5 7 II = 24mA — 5 7 II = 15mA — 10 15 VCC = 3V VI = 2.4V Ω NOTES: 1. The increase in supply current is attributable to each input that is at the specified voltage level rather than VCC or GND. 2. 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 — 0.15 — 0.25 ns 2.9 7.7 2.2 5.5 ns 2.8 6.4 2.1 5.3 ns 1.4 6.8 2.6 7.6 ns 1.3 4.2 1.5 5.1 ns A to B or B to A tPZH BIASV = GND OE to A or B tPZL BIASV = 3V OE to A or B tPHZ BIASV = GND OE to A or B tPLZ BIASV = 3V 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 IDT74CBTLV16800 LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS 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 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 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 ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns. 2. Pulse Generator for All Pulses: Rate ≤ 10MHz; 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 4 IDT74CBTLV16800 LOW-VOLTAGE 20-BIT BUS SWITCH WITH PRECHARGED OUTPUTS INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION CBTLV XXX XX IDT XX Temp. Range Device Type Package PVG PA PAG PF SSOP - Green Thin Shrink Small Outline Package TSSOP - Green Thin Very Small Outline Package 16800 Low-Voltage 20-Bit Bus Switch with Precharged Outputs 74 CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 –40°C to +85°C for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 5 for Tech Support: logichelp@idt.com