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SN74CBT3244CDW Datasheet(PDF) 1 Page - Texas Instruments |
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SN74CBT3244CDW Datasheet(HTML) 1 Page - Texas Instruments |
1 / 16 page SN74CBT3244C 8BIT FET BUS SWITCH 5V BUS SWITCH WITH 2V UNDERSHOOT PROTECTION SCDS130A − SEPTEMBER 2003 − REVISED OCTOBER 2003 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Undershoot Protection for Off-Isolation on A and B Ports Up To −2 V D Bidirectional Data Flow, With Near-Zero Propagation Delay D Low ON-State Resistance (ron) Characteristics (ron = 3 Ω Typical) D Low Input/Output Capacitance Minimizes Loading and Signal Distortion (Cio(OFF) = 5.5 pF Typical) D Data and Control Inputs Provide Undershoot Clamp Diodes D Low Power Consumption (ICC = 3 µA Max) D VCC Operating Range From 4 V to 5.5 V D Data I/Os Support 0 to 5-V Signaling Levels (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V) D Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs D Ioff Supports Partial-Power-Down Mode Operation D Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II D ESD Performance Tested Per JESD 22 − 2000-V Human-Body Model (A114-B, Class II) − 1000-V Charged-Device Model (C101) D Supports Both Digital and Analog Applications: USB Interface, Memory Interleaving, Bus Isolation, Low-Distortion Signal Gating 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1OE 1A1 2B4 1A2 2B3 1A3 2B2 1A4 2B1 GND VCC 2OE 1B1 2A4 1B2 2A3 1B3 2A2 1B4 2A1 DB, DBQ, DGV, DW, OR PW PACKAGE (TOP VIEW) RGY PACKAGE (TOP VIEW) 120 10 11 2 3 4 5 6 7 8 9 19 18 17 16 15 14 13 12 2OE 1B1 2A4 1B2 2A3 1B3 2A2 1B4 1A1 2B4 1A2 2B3 1A3 2B2 1A4 2B1 description/ordering information The SN74CBT3244C is a high-speed TTL-compatible FET bus switch with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT3244C provides protection for undershoot up to −2 V by sensing an undershoot event and ensuring that the switch remains in the proper OFF state. The SN74CBT3244C is organized as two 4-bit bus switches with separate output-enable (1OE, 2OE) inputs. It can be used as two 4-bit bus switches or as one 8-bit bus switch. When OE is low, the associated 4-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 4-bit bus switch is OFF, and the high-impedance state exists between the A and B ports. Copyright 2003, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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