IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH IDT74CBTLV16212 DESCRIPTION: FEATURES: 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 CBTLV16212 provides a set of 24 high-speed switches for bus exchanging and switching. The device has low ON resistance, resulting in under 250ps propagation delay through the switch. The CBTLV16212 operates as a single 24-bit bus switch or as a 12-bit bus exchanger, which provides data exchanging between the four signal ports through the data select (S0-S2) pins. The CBTLV16212 has the break-before-make feature, which allows zero current when switching between ports B1 and B2. • • • • • • APPLICATIONS: • 3.3V High Speed Bus Switching and Bus Isolation FUNCTIONAL BLOCK DIAGRAM 1A 1 2 SIMPLIFIED SCHEMATIC, EACH SWITCH 54 SW 1B 1 SW SW 1A 2 3 53 SW 1B 2 A 12 A 1 27 30 SW B 12 B 1 SW SW 12 A 2 28 29 SW 12 B 2 FLOW CONTROL CIRCUITRY S0 S1 S2 1 56 55 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-5889/5 IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol Description Max. Unit Supply Voltage Range –0.5 to 4.6 V Input Voltage Range 56 S1 VCC 2 55 S2 VI 1A2 3 54 1B1 2A1 4 53 1B2 2A2 5 52 2B1 3A1 6 51 2B2 3A2 7 50 3B1 GND 8 49 GND 4A1 9 48 3B2 4A2 10 47 4B1 5A1 11 46 4B2 5A2 12 45 5B1 6A1 13 44 5B2 6A2 14 43 6B1 Sx Data Select Port A Inputs or Outputs Port B Inputs or Outputs S0 1 1A1 IIK –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. PIN DESCRIPTION Pin Names Description 7A1 15 42 6B2 xAx 7A2 16 41 7B1 xBx VCC 17 40 7B2 8A1 18 39 8B1 GND 19 38 GND 8A2 20 37 8B2 S2 Inputs S1 9A1 21 36 9B1 L L 9A2 22 35 9B2 L L 10A1 23 34 10B1 L H L B2 Z A1 port = B2 port 10A2 24 33 10B2 L H H Z B1 A2 port = B1 port 11A1 25 32 11B1 H L L Z B2 A2 port = B2 port 11A2 26 31 11B2 H L H Z Z Disconnect 12A1 27 30 12B1 H H L B1 B2 A1 port = B1 port 12A2 28 29 12B2 FUNCTION TABLE(1) Inputs/Outputs A1 A2 Operation L Z Z Disconnect H B1 Z A1 port = B1 port S0 A2 port = B2 port H SSOP/ TSSOP/ TVSOP TOP VIEW H H B2 B1 A1 port = B2 port A2 port = B1 port NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level 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 IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE 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 — 5 — pF VO = 3V or 0 (switch off) — 13.5 — 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 3 11.1 3 8.8 ns 3 10.9 3 8.6 ns 1 8.7 2 8.8 ns A to B or B to A tPD Propagation Delay S to A or B tEN Output Enable Time S to A or B tDIS Output DisableTime S 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 IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE 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 IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION XXX XX CBTLV IDT XX Package Device Type Temp. Range CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 PV PA PAG PF Shrink Small Outline Package Thin Shrink Small Outline Package TSSOP - Green Thin Very Small Outline Package 16212 Low-Voltage 24-Bit Bus Exchange 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