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74CBTK16245DGVRE4 Arkusz danych(PDF) 1 Page - Texas Instruments |
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74CBTK16245DGVRE4 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 12 page SN74CBTK16245 16-BIT FET BUS SWITCH WITH ACTIVE-CLAMP UNDERSHOOT-PROTECTION CIRCUIT SCDS105D – APRIL 2000 – REVISED NOVEMBER 2001 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Member of the Texas Instruments Widebus Family D Standard ’16245-Type Pinout D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels D Ioff Supports Partial-Power-Down Mode Operation D Active-Clamp Undershoot-Protection Circuit on the I/Os Clamps Undershoots up to –2 V D Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II D ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) description The SN74CBTK16245 device provides 16 bits of high-speed TTL-compatible bus switching in a standard ’16245 device pinout. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The A and B ports have an active-clamp undershoot-protection circuit. When there is an undershoot, the active-clamp circuit is enabled, and current from VCC is supplied to clamp the output, preventing the pass transistor from turning on. The device is organized as two 8-bit low-impedance switches with separate output-enable (OE) inputs. When OE is low, the switch is on, and data can flow from the A port to the B port, or vice versa. When OE is high, the switch is open, and the high-impedance state exists between the two ports. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING SSOP DL Tube SN74CBTK16245DL CBTK16245 40 °Cto85°C SSOP – DL Tape and reel SN74CBTK16245DLR CBTK16245 –40 °C to 85°C TSSOP – DGG Tape and reel SN74CBTK16245DGGR CBTK16245 TVSOP – DGV Tape and reel SN74CBTK16245DGVR CP245 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2001, 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. DGG, DGV, OR DL PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 NC 1B1 1B2 GND 1B3 1B4 VCC 1B5 1B6 GND 1B7 1B8 2B1 2B2 GND 2B3 2B4 VCC 2B5 2B6 GND 2B7 2B8 NC 1OE 1A1 1A2 GND 1A3 1A4 VCC 1A5 1A6 GND 1A7 1A8 2A1 2A2 GND 2A3 2A4 VCC 2A5 2A6 GND 2A7 2A8 2OE NC – No internal connection 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. Widebus is a trademark of Texas Instruments. |
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