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74LVC2G157DCURE4 Fiches technique(PDF) 8 Page - Texas Instruments |
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74LVC2G157DCURE4 Fiches technique(HTML) 8 Page - Texas Instruments |
8 / 22 page 1 2 7 6 G A/B B A 5 Y Y 3 SN74LVC2G157 SCES207M – APRIL 1999 – REVISED JUNE 2015 www.ti.com 8 Detailed Description 8.1 Overview This single 2-line to 1-line data selector multiplexer is designed for 1.65-V to 5.5-V VCC operation. The SN74LVC2G157 device features a common strobe (G) input. When the strobe is high, Y is low and Y is high. When the strobe is low, a single bit is selected from one of two sources and is routed to the outputs. The device provides true and complementary data. 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. 8.2 Functional Block Diagram 8.3 Feature Description The SN74LVC2G157 device has a wide operating VCC range of 1.65 V to 5.5 V, which allows it to be used in a broad range of systems. The 5.5 V I/Os allow down translation and also allow voltages at the inputs when VCC = 0. 8.4 Device Functional Modes Table 1 lists the functional modes for SN74LVC2G157. Table 1. Function Table INPUTS OUTPUTS G A/B A B Y Y H X X X L H L L L X L H L L H X H L L H X L L H L H X H H L 8 Submit Documentation Feedback Copyright © 1999–2015, Texas Instruments Incorporated Product Folder Links: SN74LVC2G157 |
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