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SN74AHCT245PWRG3 Arkusz danych(PDF) 9 Page - Texas Instruments |
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SN74AHCT245PWRG3 Arkusz danych(HTML) 9 Page - Texas Instruments |
9 / 32 page 5 V LEDs, Relays, or other system boards OE V GND A1 A8 B1 B8 Regulated 5 V 3.3 V µC CC DIR SN54AHCT245, SN74AHCT245 www.ti.com SCLS233P – OCTOBER 1995 – REVISED JULY 2014 10 Application and Implementation 10.1 Application Information The SN74AHCT245 is a low drive CMOS device that can be used for a multitude of bus interface type applications where output ringing is a concern. The low drive and slow edge rates will minimize overshoot and undershoot on the outputs. The input switching levels have been lowered to accommodate TTL inputs of 0.8 V VIL and 2 V VIH. This feature makes it ideal for translating up from 3.3 V to 5 V. The figure below shows this type of translation. 10.2 Typical Application Figure 4. Typical Application Diagram 10.2.1 Design Requirements This device uses CMOS technology and has balanced output drive. Care should be taken to avoid bus contention because it can drive currents that would exceed maximum limits. The high drive will also create fast edges into light loads so routing and load conditions should be considered to prevent ringing. 10.2.2 Detailed Design Procedure • Recommended input conditions – Specified high and low levels. See (VIH and VIL) in the Recommended Operating Conditions table. – Specified high and low levels. See (VIH and VIL) in the Recommended Operating Conditions table. – Inputs are overvoltage tolerant allowing them to go as high as 5.5 V at any valid VCC • Recommend output conditions – Load currents should not exceed 25 mA per output and 50 mA total for the part – Outputs should not be pulled above VCC Copyright © 1995–2014, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: SN54AHCT245 SN74AHCT245 |
Podobny numer części - SN74AHCT245PWRG3 |
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Podobny opis - SN74AHCT245PWRG3 |
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