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74ALS273D データシート(PDF) 2 Page - NXP Semiconductors |
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74ALS273D データシート(HTML) 2 Page - NXP Semiconductors |
2 / 9 page Philips Semiconductors Product specification 74ALS273 Octal D-type flip-flop 2 1991 Feb 08 853–1398 01670 FEATURES • Eight edge-triggered D-type flip-flops • Buffered common clock • Buffered asynchronous master reset • See 74ALS377 for clock enable version • See 74ALS373 for transparent latch version • See 74ALS374 for 3-State version DESCRIPTION The 74ALS273 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 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 CP and MR are common to all flip-flops. TYPE TYPICAL fMAX TYPICAL SUPPLY CURRENT (TOTAL) 74ALS273 95MHz 16mA PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 MR Q0 D0 D1 Q1 Q2 D2 D3 Q3 Q4 GND D4 D5 Q5 Q6 D6 D7 Q7 VCC CP SF00346 ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C DRAWING NUMBER 20-pin plastic DIP 74ALS273N SOT146-1 20-pin plastic SO 74ALS273D SOT163-1 20-pin plastic SSOP Type II 74ALS273DB SOT339-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION 74ALS (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW D0 – D7 Data inputs 1.0/2.0 20 µA/0.2mA CP Clock pulse input (active rising edge) 1.0/1.0 20 µA/0.1mA MR Master Reset input (active-Low) 1.0/1.0 20 µA/0.1mA Q0 – Q7 3-State outputs 130/240 2.6mA/24mA NOTE: One (1.0) ALS unit load is defined as: 20 µA in the High state and 0.1mA in the Low state. LOGIC SYMBOL 3 4 7 8 13 14 18 17 D0 D1 D2 D3 D4 D5 D6 D7 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 2 5 6 9 12 15 16 19 1 11 MR CP VCC = Pin 20 GND = Pin 10 SF00347 IEC/IEEE SYMBOL SF00348 1 32 4 5 7 6 8 9 R 11 C1 13 12 14 15 17 16 18 19 1D |
同様の部品番号 - 74ALS273D |
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同様の説明 - 74ALS273D |
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