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SN74HC14DBRG4 Arkusz danych(PDF) 9 Page - Texas Instruments |
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SN74HC14DBRG4 Arkusz danych(HTML) 9 Page - Texas Instruments |
9 / 30 page A Y 9 SN54HC14, SN74HC14 www.ti.com SCLS085I – DECEMBER 1982 – REVISED FEBRUARY 2016 Product Folder Links: SN54HC14 SN74HC14 Submit Documentation Feedback Copyright © 1982–2016, Texas Instruments Incorporated 9 Detailed Description 9.1 Overview These Schmitt-trigger devices contain six independent inverters. They perform the Boolean function Y = A in positive logic. Schmitt-trigger inputs are designed to provide a minimum separation between positive and negative switching thresholds. This allows for noisy or slow inputs that would cause problems such as oscillation or excessive current draw with normal CMOS inputs. 9.2 Functional Block Diagram Figure 4. Logic Diagram (Positive Logic) 9.3 Feature Description The wide operating range of the device allows it to be used in a variety of systems that use different logic levels. The outputs can drive up to 10 LSTTL loads each. The device has very low power consumption, with 20- μA Max ICC. Typical propagation delay is also low at 11 ns. The balanced drive outputs can source or sink 4 mA at 5-V VCC. The input leakage current is 1 μA Max. 9.4 Device Functional Modes Table 1 lists the functional modes of the SNx4HC14. Table 1. Function Table (Each Inverter) INPUTS A OUTPUT Y H L L H |
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