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| IDT74CBTLV16245 LOW-VOLTAGE 16-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE 16-BIT BUS SWITCH IDT74CBTLV16245 PRELIMINARY FEATURES: * * * * * * 5 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 SSOP, TSSOP, and TVSOP packages DESCRIPTION: The CBTLV16245 is a set of 16-bit bus switches. It has standard 16245 pinouts. The device is organized as dual 8-bit low resistance switches with independent Output Enable (xOE) control inputs. The switches can be turned on under the control of the LVTTL-compatible Output Enable signals (xOE) for bidirectional data flow between port A and port B. When xOE is high, the switch is off and a high impedance exists between Port A and Port B. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor. APPLICATIONS: * 3.3V High Speed Bus Switching and Bus Isolation FUNCTIONAL BLOCK DIAGRAM SIMPLIFIED SCHEMATIC, EACH SWITCH 47 1A1 SW 2 1B1 A 1A8 37 SW 12 1B8 B 48 1OE OE 36 2A1 SW 13 2B1 2A8 26 SW 23 2B8 25 2OE INDUSTRIAL TEMPERATURE RANGE 1 c 2003 Integrated Device Technology, Inc. The IDT logo is a registered trademark of Integrated Device Technology, Inc. FEBRUARY 2003 DSC-5885/5 IDT74CBTLV16245 LOW-VOLTAGE 16-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION NC 1B1 1B2 ABSOLUTE MAXIMUM RATINGS(1) Symbol VCC Description Supply Voltage Range Input Voltage Range Continuous Channel Current IIK TSTG Input Clamp Current, VI/O < 0 Storage Temperature Range Max. -0.5 to 4.6 -0.5 to 4.6 128 -50 -65 to +150 Unit V V mA mA C 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 1OE 1A1 1A2 VI NC 1B3 1B4 NC 1A3 1A4 NC 1B5 1B6 NC 1A5 1A6 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. GND 1B7 1B8 2B1 2B2 GND 1A7 1A8 2A1 2A2 PIN DESCRIPTION Pin Names xOE xAx xBx Description Output Enable (Active LOW) Port A Inputs or Outputs Port B Inputs or Outputs GND 2B3 2B4 GND 2A3 2A4 VCC 2B5 2B6 VCC 2A5 2A6 GND 2B7 2B8 GND 2A7 2A8 FUNCTION TABLE (EACH 8-BIT BUS SWITCH)(1) Input OE L H NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level NC 2OE Operation A-Port = B-Port Disconnect SSOP/ TSSOP/ TVSOP TOP VIEW OPERATING CHARACTERISTICS(1) Symbol VCC VIH VIL TA Parameter Supply Voltage High-Level Control Input Voltage Low-Level Control Input Voltage Operating Free-Air Temperature VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 2.3V to 2.7V 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. Test Conditions Min. 2.3 1.7 2 -- -- -40 Max. 3.6 -- -- 0.7 0.8 +85 Unit V V V C 2 IDT74CBTLV16245 LOW-VOLTAGE 16-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 II IOZ IOFF ICC ICC(2) CI CIO(OFF) Max. at VCC = 2.3V 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. Parameter Control Inputs, Data I/O Control Inputs Data I/O Test Conditions VCC = 3V, II = -18mA VCC = 3.6V, VI = VCC or GND VCC = 3.6V, VO = 0V or 3.6V switch disabled VCC = 0V, VI or VO = 0V or 3.6V VCC = 3.6V, IO = 0, VI = VCC or GND Min. -- -- -- -- -- -- -- -- IO = 64mA IO = 24mA IO = 15mA IO = 64mA IO = 24mA IO = 15mA -- -- -- -- -- -- Typ.(1) -- -- -- -- -- -- 4 9 5 5 27 5 5 10 Max. -1.2 1 5 10 10 300 -- -- 8 8 40 7 7 15 Unit V A A A A A pF pF Control Inputs Control Inputs VCC = 3.6V, one input at 3V, other inputs at VCC or GND VI = 3V or 0 VO = 3V or 0, OE = VCC VI = 0 VI = 1.7V VI = 0 SWITCHING CHARACTERISTICS VCC = 2.5V 0.2V Symbol tPD(1) tEN tDIS Propagation Delay A to B or B to A Output Enable Time OE to A or B Output Disable time 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). VCC = 3.3V 0.3V Min. -- 1 1 Max. 0.25 4.5 5 Unit ns ns ns Parameter Min. -- 1 1 Max. 0.15 5 5.5 3 IDT74CBTLV16245 LOW-VOLTAGE 16-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS Symbol VLOAD VIH VT VLZ VHZ CL VCC(1)= 3.3V0.3V 6 3 1.5 300 300 50 VCC(2)= 2.5V0.2V 2 x Vcc Vcc Vcc / 2 150 150 30 Unit V V V mV mV pF SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL VIH VT 0V VOH VT VOL VIH VT 0V Propagation Delay VCC 500 Pulse(1, 2) Generator VIN D.U.T. RT 500 CL VOUT VLOAD Open GND CONTROL INPUT ENABLE DISABLE tPZL OUTPUT SWITCH NORMALLY CLOSED LOW tPZH OUTPUT SWITCH NORMALLY OPEN HIGH VLOAD/2 VT tPHZ VT 0V tPLZ VIH VT 0V VLOAD/2 VOL + VLZ VOL VOH VOH -VHZ 0V Test Circuits for All Outputs 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. NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. Enable and Disable Times SWITCH POSITION Test tPLZ/tPZL tPHZ/tPZH tPD Switch VLOAD GND Open 4 IDT74CBTLV16245 LOW-VOLTAGE 16-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION XXX XX CBTLV IDT XX Temp. Range Device Type Package PV PA PF Shrink Small Outline Package Thin Shrink Small Outline Package Thin Very Small Outline Package 16245 Low-Voltage 16-Bit Bus Switch 74 -40C to +85C 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 for Tech Support: logichelp@idt.com (408) 654-6459 5 |
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