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MC74ACT273N 数据表(PDF) 1 Page - ON Semiconductor |
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MC74ACT273N 数据表(HTML) 1 Page - ON Semiconductor |
1 / 7 page © Semiconductor Components Industries, LLC, 2001 May, 2001 – Rev. 5 1 Publication Order Number: MC74AC273/D MC74AC273, MC74ACT273 Octal D Flip-Flop The MC74AC273/74ACT273 has eight edge-triggered D–type flip–flops with individual D inputs and Q outputs. The common buffered Clock (CP) and Master Reset (MR) inputs load and reset (clear) all flip–flops simultaneously. The register is fully edge-triggered. The state of each D input, one setup time before the LOW–to–HIGH clock transition, is transferred to the corresponding flip–flop’s Q output. All outputs will be forced LOW independently of Clock or Data inputs by a LOW voltage level on the MR input. The device is useful for applications where the true output only is required and the Clock and Master Reset are common to all storage elements. • Ideal Buffer for MOS Microprocessor or Memory • Eight Edge-Triggered D Flip–Flops • Buffered Common Clock • Buffered, Asynchronous Master Reset • See MC74AC377 for Clock Enable Version • See MC74AC373 for Transparent Latch Version • See MC74AC374 for 3-State Version • Outputs Source/Sink 24 mA • ′ACT273 Has TTL Compatible Inputs Figure 1. Pinout: 20–Lead Packages Conductors (Top View) 19 20 18 17 16 15 14 2 1 34567 VCC 13 8 12 9 11 10 Q7 D7 D6 Q6 Q5 D5 D4 Q4 CP MR Q0 D0 D1 Q1 Q2 D2 D3 Q3 GND PIN ASSIGNMENT PIN FUNCTION D0–D7 Data Inputs MR Master Reset CP Clock Pulse Input Q0–Q7 Data Outputs http://onsemi.com 1 20 PDIP–20 N SUFFIX CASE 738 1 20 1 20 1 20 SO–20 DW SUFFIX CASE 751 TSSOP–20 DT SUFFIX CASE 948E EIAJ–20 M SUFFIX CASE 967 Device Package Shipping ORDERING INFORMATION MC74AC273N PDIP–20 18 Units/Rail MC74ACT273N PDIP–20 18 Units/Rail MC74AC273DW SOIC–20 38 Units/Rail MC74AC273DWR2 SOIC–20 1000 Tape & Reel MC74ACT273DW SOIC–20 38 Units/Rail MC74ACT273DWR2 SOIC–20 1000 Tape & Reel MC74AC273DT TSSOP–20 75 Units/Rail MC74AC273DTR2 TSSOP–20 2500 Tape & Reel MC74ACT273DT TSSOP–20 75 Units/Rail MC74ACT273DTR2 TSSOP–20 2500 Tape & Reel MC74AC273M EIAJ–20 40 Units/Rail MC74AC273MEL EIAJ–20 2000 Tape & Reel MC74ACT273M EIAJ–20 40 Units/Rail MC74ACT273MEL EIAJ–20 2000 Tape & Reel See general marking information in the device marking section on page 7 of this data sheet. DEVICE MARKING INFORMATION |
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