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74AVC16245DGGRG4 데이터시트(PDF) 1 Page - Texas Instruments |
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74AVC16245DGGRG4 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 16 page www.ti.com FEATURES DESCRIPTION 136 -128 -144 -160 0.4 0.8 1.2 1.6 2.0 2.4 2.8 170 153 119 102 85 68 51 34 17 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 TA = 25°C Process = Nominal IOL - Output Current - mA VCC = 3.3 V VCC = 2.5 V VCC = 1.8 V TA = 25°C Process = Nominal IOH - Output Current - mA VCC = 3.3 V VCC = 2.5 V VCC = 1.8 V -80 -96 -112 -32 -48 -64 0 -16 SN74AVC16245 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS SCES142L – JULY 1998 – REVISED MAY 2005 • Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data Communications • Member of the Texas Instruments Widebus™ Family • Ioff Supports Partial-Power-Down Mode Operation • EPIC™ (Enhanced-Performance Implanted CMOS) Submicron Process • ESD Protection Exceeds JESD 22 • DOC™ (Dynamic Output Control) Circuit – 2000-V Human-Body Model (A114-A) Dynamically Changes Output Impedance, – 200-V Machine Model (A115-A) Resulting in Noise Reduction Without Speed • Latch-Up Performance Exceeds 250 mA Per Degradation JESD 78 • Less Than 2-ns Maximum Propagation Delay • Package Options Include Plastic Thin Shrink at 2.5-V and 3.3-V VCC Small-Outline (DGG) and Thin Very • Dynamic Drive Capability Is Equivalent to Small-Outline (DGV) Packages Standard Outputs With IOH and IOL of ±24 mA at 2.5-V VCC A Dynamic Output Control (DOC™) circuit is implemented, which, during the transition, initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows typical VOL vs IOL and VOH vs IOH curves to illustrate the output impedance and drive capability of the circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC™) Circuitry Technology and Applications, literature number SCEA009. Figure 1. Output Voltage vs Output Current This 16-bit (dual octal) noninverting bus transceiver is operational at 1.2-V to 3.6-V VCC, but is designed specifically for 1.65-V to 3.6-V VCC operation. The SN74AVC16245 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. 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. Widebus, EPIC, DOC are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 1998–2005, 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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