IDT74CBTLV16245 LOW-VOLTAGE 16-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE 16-BIT BUS SWITCH FEATURES: IDT74CBTLV16245 DESCRIPTION: 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 SSOP, TSSOP, and TVSOP packages • • • • • • 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 47 1A1 SW SIMPLIFIED SCHEMATIC, EACH SWITCH 2 1B1 B A 1A8 37 SW 12 1B8 48 1OE OE 36 2A1 2A8 26 SW SW 13 2B1 23 2B8 25 2OE The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE FEBRUARY 2003 1 c 2003 Integrated Device Technology, Inc. DSC-5885/6 IDT74CBTLV16245 LOW-VOLTAGE 16-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol VCC NC 1 48 1OE 1B1 2 47 1A1 1B2 3 46 1A2 NC 4 45 NC VI IIK TSTG Description 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 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. 1B3 5 44 1A3 1B4 6 43 1A4 NC 1B5 7 42 8 41 NC 1A5 1B6 9 40 1A6 GND 1B7 10 39 11 38 GND 1A7 1B8 12 37 1A8 2B1 13 36 2A1 2B2 14 35 2A2 GND 15 34 GND xOE Output Enable (Active LOW) xAx Port A Inputs or Outputs xBx Port B Inputs or Outputs 2B3 16 33 2A3 2B4 17 32 2A4 VCC 2B5 18 31 19 30 VCC 2A5 2B6 20 29 2A6 GND 2B7 21 28 22 27 GND 2A7 2B8 23 26 2A8 NC 24 25 2OE PIN DESCRIPTION Pin Names Description FUNCTION TABLE (EACH 8-BIT BUS SWITCH)(1) Input OE Operation L A-Port = B-Port H Disconnect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level SSOP/ TSSOP/ TVSOP TOP VIEW 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 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 = –40°C to +85°C Symbol Typ.(1) Max. — — –1.2 V — — ±1 µA — — 5 µA VCC = 0V, VI or VO = 0V or 3.6V — — 10 µA VCC = 3.6V, IO = 0, VI = VCC or GND — — 10 µA Parameter Test Conditions Control Inputs, Data I/O VCC = 3V, II = –18mA Control Inputs VCC = 3.6V, VI = VCC or GND Data I/O VCC = 3.6V, VO = 0V or 3.6V switch disabled IOFF ICC VIK II I OZ Min. Unit ∆ICC(2) 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, OE = VCC — 9 — pF IO = 64mA — 5 8 IO = 24mA — 5 8 VI = 1.7V IO = 15mA — 27 40 VI = 0 IO = 64mA — 5 7 IO = 24mA — 5 7 IO = 15mA — 10 15 CIO(OFF) Max. at VCC = 2.3V VI = 0 Typ. at VCC = 2.5V RON(3) VCC = 3V VI = 2.4V Ω NOTES: 1. Typical values are at 3.3V, +25°C 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. 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 1 5 1 4.5 ns 1 5.5 1 5 ns A to B or B to A tEN Output Enable Time OE to A or B tDIS 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). 3 IDT74CBTLV16245 LOW-VOLTAGE 16-BIT 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 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 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 IDT74CBTLV16245 LOW-VOLTAGE 16-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION XXX XX CBTLV IDT XX Temp. Range Device Type Package CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 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 –40°C to +85°C for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 5 for Tech Support: [email protected] (408) 654-6459