IDT74CBTLV32862 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE LOW-VOLTAGE 10-BIT BUS SWITCH WITH ACTIVE HIGH AND LOW ENABLES FEATURES: – – – – – – IDT74CBTLV32862 DESCRIPTION: 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, QSOP, and TSSOP packages The CBTLV32862 is a ten bit high-speed bus switch. It adds an internal series resistor with each switch to reduce reflection noise in high-speed applications. When closed, the switch acts as a source (series) termination for the driver connected to it. The device is organized as one 10-bit bus switch. The switches are controlled by independent active-low enable (OE) and active-high enable (OE) controls. 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, and OE should be tied to GND. APPLICATIONS: − 3.3V High Speed Bus Switching and Bus Isolation FUNCTIONAL BLOCK DIAGRAM A1 A10 OE OE 2 SIMPLIFIED SCHEMATIC, EACH SWITCH 22 SW 11 SW 13 B1 B10 A B 1 23 OE OE INDUSTRIAL TEMPERATURE RANGE JANUARY 2001 1 c 2001 Integrated Device Technology, Inc. DSC-5867/2 IDT74CBTLV38262 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION Symbol VCC Description Supply Voltage Range Max. –0.5 to 4.6 Unit V VI Input Voltage Range –0.5 to 4.6 V 128 mA –50 mA –65 to +150 °C OE 1 24 V CC A1 2 23 OE A2 3 22 B1 IIK Input Clamp Current, , VI/O < 0 TSTG Storage Temperature A3 4 21 B2 A4 5 20 B3 A5 6 19 B4 A6 7 18 B5 A7 8 17 B6 A8 9 16 B7 A9 10 15 B8 A 10 11 14 B9 GND 12 13 B 10 SO24-7 SO24-8 SO24-9 (1) Continuous Channel Current 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 (1) Inputs OE SSOP/ QSOP/ TSSOP TOP VIEW OE Function L L Disconnect L H Disconnect H L A Port = B Port H H Disconnect NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level OPERATING CHARACTERISTICS, TA = 25°C Symbol VCC Supply Voltage VIH High-Level Control Input Voltage VIL TA Parameter Low-Level Control Input Voltage Test Conditions Min. 2.3 Max. 3.6 VCC = 2.3V to 2.7V 1.7 — 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 Unit V V V °C IDT74CBTLV32862 LOW-VOLTAGE 10-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 Min. — Typ. (1) — Max. – 1.2 Unit V VCC = 3.6V, VI = VCC or GND — — ±1 µA VCC = 3.6V, VO = 0 or 3.6V, switch disabled — — 5 µA IOFF VCC = 0, VI or VO = 0 to 3.6V — — 50 µA ICC VCC = 3.6V, IO = 0, VI = VCC or GND — — 10 µA Symbol VIK Parameter Control Inputs, Data I/O Test Conditions VCC = 3V, II = −18mA II Control Inputs, Data I/O IOZ Data I/O ∆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, OE = VCC — 6 — pF VI = 0 IO = 64mA 20 28 40 CIO(OFF) VCC = 2.3V Typ at VCC = 2.5V RON (3) IO = 24mA 20 28 40 VI = 1.7V IO = 15mA 20 50 65 VI = 0 IO = 64mA 20 28 40 IO = 24mA 20 28 40 IO = 15mA 20 35 45 VCC = 3V VI = 2.4V Ω NOTES: 1. Typical values are at VCC = 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. 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) tEN tDIS Parameter 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 VCC = 3.3V ± 0.3V Min. — Max. 0.85 Min. — Max. 1.4 Unit ns 1 6 1 5.3 ns 1 5.5 1 5.5 ns 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 impedance). 3 IDT74CBTLV38262 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS Symbol VLOAD VCC(1)= 3.3V ± 0.3V 6 PROPAGATION DELAY VCC(2)= 2.5V ± 0.2V 2 x Vcc Unit 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 500 Ω DISABLE CONTROL INPUT GND tPZL D.U.T. OUTPUT SW ITCH NORMALLY CLOSED LOW tPZH OUTPUT SW ITCH NORMALLY OPEN HIGH NOTE: 500 Ω CL DEFINITIONS: 1. CL = Load capacitance: includes jig and load capacitance. RT = Termination resistance: should be equal to ZOUT of the pulse generator. NOTES: 1. 2. V IH VT 0V ENABLE V OUT RT tPHL Pulse Generator for all pulses: Rate ≤ 10MHz; tF ≤ 2.5ns, tR ≤ 2.5ns Pulse Generator for all pulses: Rate ≤ 10MHz; tF ≤ 2ns, tR ≤ 2ns SWITCH POSITION Test tPLZ/tPZL Switch VLOAD tPHZ/tPZH GND tPD Open V OH VT VOL ENABLE AND DISABLE TIMES Open Pulse Generator tPLH V LOAD V CC (1, 2) t PHL OPPOSITE PHASE INPUT TRANSITION TEST CIRCUITS FOR ALL OUTPUTS V IN tPLH OUTPUT V IH VT 0V 4 tPLZ V IH VT 0V V LOAD/2 V LOAD/2 VT V OL + V LZ V OL tPHZ VT V OH V OH -V HZ 0V 0V Diagram shown for Input Control Enable-LOW and Input Control Disable-HIGH. IDT74CBTLV32862 LOW-VOLTAGE 10-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDT XX Temp. Range CBTLV XXX XX Device Type Package CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 PY Q PG Shrink Sm all Outline Package (SO24-7) Quarter-size Sm all Outline Package (SO24-8) Thin Shrink Sm all Outline Package (SO24-9) 32862 Low-Voltage 10-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* *To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. The IDT logo is a registered trademark of Integrated Device Technology, Inc. 5