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SN74AHCT86DGVR 데이터시트(PDF) 8 Page - Texas Instruments |
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SN74AHCT86DGVR 데이터시트(HTML) 8 Page - Texas Instruments |
8 / 30 page An exclusive-OR gate has many applications, some of which can be represented better by alternative logic symbols. = 1 EXCLUSIVE OR These are five equivalent exclusive-OR symbols valid for an SN74AHCT86 gate in positive logic; negation may be shown at any two ports. = 2k 2k + 1 LOGIC-IDENTITY ELEMENT EVEN-PARITY ELEMENT ODD-PARITY ELEMENT The output is active (low) if all inputs stand at the same logic level (that is, A = B). The output is active (low) if an even number of inputs (that is, 0 or 2) are active. The output is active (high) if an odd number of inputs (that is, only 1 of the 2) are active. SN54AHCT86, SN74AHCT86 SCLS250N – OCTOBER 1995 – REVISED AUGUST 2014 www.ti.com 9 Detailed Description 9.1 Overview The SNx4AHCT86 devices are quadruple 2-input exclusive-OR gates. These devices perform the Boolean function Y = A × B or Y = AB + AB in positive logic. The inputs are TTL compatible allowing 3.3 V to 5 V translation. 9.2 Functional Block Diagram Figure 3. Exclusive-OR Logic 9.3 Feature Description • TTL inputs – Lowered switching threshold allows up translation 3.3 V to 5 V • Slow edges reduce output ringing 9.4 Device Functional Modes Table 1. Function Table (Each Gate) INPUTS OUTPUT Y A B L L L L H H H L H H H L 8 Submit Documentation Feedback Copyright © 1995–2014, Texas Instruments Incorporated Product Folder Links: SN54AHCT86 SN74AHCT86 |
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