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74LVT74 데이터시트(PDF) 2 Page - NXP Semiconductors |
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74LVT74 데이터시트(HTML) 2 Page - NXP Semiconductors |
2 / 10 page Philips Semiconductors Product specification 74LVT74 3.3V Dual D-type flip-flop 2 1996 Aug 28 853-1872 17244 QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS Tamb = 25°C; GND = 0V TYPICAL UNIT tPLH tPHL Propagation delay CPn to Qn CL = 50pF; VCC = 3.3V 3.1 3.6 ns CIN Input capacitance VI = 0V or 3.0V 3 pF ICC Total supply current VCC = 3.6V 0.5 mA PIN CONFIGURATION 14 13 12 11 10 9 8 7 6 5 4 3 2 1 GND VCC SD1 Q1 Q1 CP1 RD1 D1 RD0 D0 Q0 CP0 SD0 Q0 SF00045 LOGIC SYMBOL Q0 Q0Q1 Q1 56 98 VCC = Pin 14 GND = Pin 7 3 4 1 11 10 13 CP0 SD0 RD0 CP1 SD1 RD1 D0 D1 212 SA00359 DESCRIPTION The 74LVT74 is a dual positive edge-triggered D-type flip-flop featuring individual data, clock, set, and reset inputs; also true and complementary outputs. Set (SD) and reset (RD) are asynchronous active low inputs and operate independently of the clock input. When set and reset are inactive (high), data at the D input is transferred to the Q and Q outputs on the low-to-high transition of the clock. Data must be stable just one setup time prior to the low-to-high transition of the clock for predictable operation. Clock triggering occurs at a voltage level and is not directly related to the transition time of the positive-going pulse. Following the hold time interval, data at the D input may be changed without affecting the levels of the output. PIN DESCRIPTION PIN NUMBER SYMBOL NAME AND FUNCTION 2, 12 D0, D1 Data inputs 3, 11 CP0, CP1 Clock inputs (active rising edge) 4, 10 SD0, SD1 Set inputs (active LOW) 1, 13 RD0, RD1 Reset inputs (active LOW) 5, 6, 8, 9 Qn, Qn Data outputs LOGIC SYMBOL (IEEE/IEC) 4 3 2 1 10 11 12 13 5 6 9 8 & S S C1 C2 R 1D 2D R SF00047 ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER 14-Pin Plastic SO –40 °C to +85°C 74LVT74 D 74LVT74 D SOT108-1 14-Pin Plastic SSOP –40 °C to +85°C 74LVT74 DB 74LVT74 DB SOT337-1 14-Pin Plastic TSSOP –40 °C to +85°C 74LVT74 PW 74LVT74PW DH SOT402-1 |
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