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74AVC16827DGGRE4 датащи(PDF) 1 Page - Texas Instruments |
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74AVC16827DGGRE4 датащи(HTML) 1 Page - Texas Instruments |
1 / 15 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 SN74AVC16827 20-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS SCES176I – DECEMBER 1998 – REVISED JUNE 2005 • Dynamic Drive Capability Is Equivalent to Standard Outputs With IOH and IOL of ±24 mA • Member of the Texas Instruments Widebus™ at 2.5-V VCC Family • Overvoltage-Tolerant Inputs/Outputs Allow • EPIC™ (Enhanced-Performance Implanted Mixed-Voltage-Mode Data Communications CMOS) Submicron Process • Ioff Supports Partial-Power-Down Mode • DOC™ (Dynamic Output Control) Circuit Operation Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed • Latch-Up Performance Exceeds 100 mA Per Degradation JESD 78, Class II • 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 Small-Outline (DGV) Packages 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 20-bit noninverting buffer/driver 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 SN74AVC16827 is composed of two 10-bit sections with separate output-enable signals. For either 10-bit buffer section, the two output-enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must both be low for the corresponding Y outputs to be active. If either output-enable input is high, the outputs of that 10-bit buffer section are in the high-impedance state. 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. 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. The SN74AVC16827 is characterized for operation from –40°C to 85°C. 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. |
Аналогичный номер детали - 74AVC16827DGGRE4 |
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Аналогичное описание - 74AVC16827DGGRE4 |
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