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74LVC16245ADGVRE4 Fiches technique(PDF) 1 Page - Texas Instruments |
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74LVC16245ADGVRE4 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 19 page 1 FEATURES 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 1DIR 1B1 1B2 GND 1B3 1B4 VCC 1B5 1B6 GND 1B7 1B8 2B1 2B2 GND 2B3 2B4 VCC 2B5 2B6 GND 2B7 2B8 2DIR 1OE 1A1 1A2 GND 1A3 1A4 VCC 1A5 1A6 GND 1A7 1A8 2A1 2A2 GND 2A3 2A4 VCC 2A5 2A6 GND 2A7 2A8 2OE DESCRIPTION/ORDERING INFORMATION SN74LVC16245A 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS SCES062O – DECEMBER 1995 – REVISED JANUARY 2008 www.ti.com 2 • Member of the Texas Instruments Widebus™ Family • Operates From 1.65 V to 3.6 V • Inputs Accept Voltages to 5.5 V • Max t pd of 4 ns at 3.3 V • Typical V OLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C • Typical V OHV (Output VOH Undershoot) >2 V at VCC = 3.3 V, TA = 25°C • Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC) • I off Supports Partial-Power-Down Mode Operation • Latch-Up Performance Exceeds 250 mA Per JESD 17 • ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) This 16-bit (dual-octal) noninverting bus transceiver is designed for 1.65-V to 3.6-V VCC operation. The SN74LVC16245A is designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements. This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated. 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. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment. 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. 1 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. 2 Widebus is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 1995–2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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