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SN74AHC273DBR 数据表(PDF) 11 Page - Texas Instruments |
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SN74AHC273DBR 数据表(HTML) 11 Page - Texas Instruments |
11 / 30 page µC or System Logic CLR V GND 1Q 8Q 1D 8D Regulated 3.3 V 5 V System Logic CC CLK SN54AHC273, SN74AHC273 www.ti.com SCLS376I – JUNE 1997 – REVISED MARCH 2015 10 Application and Implementation 10.1 Application Information The SNx4AHC273 is a low-drive CMOS device that can be used for a multitude of applications where output ringing is a concern. The low drive and slow edge rates will minimize overshoot and undershoot on the outputs. The inputs are tolerant to 5.5 V at any valid VCC. This feature makes the device ideal for translating down to the VCC level. Figure 5 shows the reduction in ringing compared to higher drive parts such as AC. 10.2 Typical Application Figure 4. Specific Application Schematic 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 1. Recommended input conditions – Rise time and fall time specs: See ( Δt/ΔV) 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 2. Recommend output conditions – Load currents should not exceed 25 mA per output and 75 mA total for the part – Outputs should not be pulled above VCC Copyright © 1997–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: SN54AHC273 SN74AHC273 |
类似零件编号 - SN74AHC273DBR |
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类似说明 - SN74AHC273DBR |
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