IDT74CBTLVR16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH WITH INTERNAL PULL DOWN RESISTORS IDT74CBTLVR16292 DESCRIPTION: FEATURES: The CBTLVR16292 is a single 12-bit multiplexing / demultiplexing bus switch, which provides high speed switching. Both A and B ports have 25Ω series dampening resistors to minimize undershoot, reflection noise, and charge sharing effects. The demultiplexer side has a 500Ω resistor termination to GND to eliminate floating nodes. When the select (S) input is low, the A port is connected to the B1 port, and the R pulldown is connected to the B2 port. Similarly, when the S input is high, A port is connected to B2 port and the R pulldown is connected to B1 port. • • • • • • • • Isolation Under Power-Off Conditions Make-before-break feature Over-voltage tolerant Ω pull-down resistor to GND Internal 500Ω Ω series dampening resistors Both A and B ports have 25Ω 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 APPLICATIONS: • 3.3V High Speed Bus Switching and Bus Isolation • Resource sharing FUNCTIONAL BLOCK DIAGRAM 54 2 1A SIMPLIFIED SCHEMATIC, EACH SWITCH 1B1 SW RPULLDOWN RPULLDOWN A 53 SW 12A 27 B 1B2 30 SW 12B1 RPULLDOWN SELECT CONTROL CIRCUITRY RPULLDOWN SW S 30 12B2 1 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-5891/4 IDT74CBTLVR16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol S 1 56 NC VCC 1A 2 55 NC VI NC 3 54 1B1 2A 4 53 1B2 NC 5 52 2B1 3A 6 51 2B2 NC 7 50 3B1 GND 8 49 GND 4A 9 48 3B2 NC 10 47 4B1 5A 11 46 4B2 NC 12 45 5B1 6A 13 44 5B2 NC 14 43 6B1 7A 15 42 6B2 NC 16 41 7B1 VCC 17 40 7B2 8A 18 39 8B1 GND 19 38 GND NC 20 37 8B2 9A 21 36 9B1 NC 22 35 9B2 10A 23 34 10B1 NC 24 33 10B2 11A 25 32 11B1 NC 26 31 11B2 12A 27 30 12B1 NC 28 29 12B2 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. PIN DESCRIPTION Pin Names Description S Select Input xAx Port A Inputs or Outputs xBx Port B Inputs or Outputs FUNCTION TABLE(1) Input S Operation L A Port = B1 Port RPULLDOWN = B2 Port H A Port = B2 Port RPULLDOWN = B1 Port SSOP/ TSSOP/ TVSOP TOP VIEW NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level 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 IDT74CBTLVR16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX 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 VIK II Parameter Test Conditions Control Inputs, Data I/O VCC = 3V, II = –18mA Control Inputs VCC = 3.6V, VI = VCC or GND VCC = 0V, VI or VO = 0V or 3.6V IOFF ICC Typ.(1) Max. — — –1.2 V — — ±1 µA — — 10 µA Min. Unit VCC = 3.6V, IO = 0, VI = VCC or GND — — 10 µA ∆ICC(2) Control Inputs VCC = 3.6V, one input at 3V, other inputs at VCC or GND — — 300 µA CI Control Inputs VI = 3.3V or 0 — 3.5 — pF CIO(OFF) A port or B port VO = 3.3V or 0 — 23 — pF Max. at VCC = 2.3V VI = 0 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 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 — 0.9 — 1.5 ns 3.2 8.5 3.2 8 ns 1 6.5 1 5.8 ns 1 5.3 1 4.6 ns 0 2 0 2 ns A to B or B to A tPD(2) Propagation Delay S to A tEN Output Enable Time S to B tDIS Output Disable Time S to B tMB/B(3,4) Make-Before-Break Time NOTES: 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 impedance). 2. The condition to measure this propagation delay is by observing the change of voltage on the A port introduced by static fields equal to 3V or 0V for 3.3V±0.3V or VCC or 0 for 2.5V±0.2V on B1 and B2 ports to get the required transition. 3. The make-before-break time is the duration between the make and break, during transition from one selected port to another. 4. This parameter is guaranteed by design but not production tested. 3 IDT74CBTLVR16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX 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 NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Disable Low waveform applies to outputs that are LOW, except when disabled by the output control S. 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 IDT74CBTLVR16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION CBTLV IDT XX Temp. Range X Family XXX Device Type XX 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 16292 Low-Voltage 12-Bit Mux / Demux Bus Switch with Internal Pull Down Resistors R 25Ω series dampening resistors on A and B ports 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