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74ABT74 bảng dữ liệu(PDF) 1 Page - NXP Semiconductors |
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1 / 5 page Philips Semiconductors Product specification 74ABT74 Dual D-type flip-flop 1 853-1813 15793 1995 Sep 22 QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS Tamb = 25°C; GND = 0V TYPICAL UNIT tPLH tPHL Propagation delay CPn to Qn, Qn CL = 50pF; VCC = 5V 3.0 2.5 ns tOSLH tOSHL Output to Output skew CC 0.5 ns CIN Input capacitance VI = 0V or VCC 3 pF ICC Total supply current Outputs disabled; VCC = 5.5V 50 µA PIN CONFIGURATION 14 13 12 11 10 9 8 7 6 5 4 3 2 1 GND VCC SD1 Q1 Q1 CP1 RD1 D1 RD1 D0 Q0 CP0 SD1 Q0 SF00045 PIN DESCRIPTION PIN NUMBER SYMBOL NAME AND FUNCTION 1, 2, 3, 4, 10, 11, 12, 13 RDn, Dn, CPn, SDn Data inputs 5, 6, 8, 9 Qn, Qn Data outputs 7 GND Ground (0V) 14 VCC Positive supply voltage 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 74ABT74 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. 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 LOGIC DIAGRAM VCC = Pin 14 GND = Pin 7 5, 9 6, 8 Q Q 4, 10 1, 13 3, 11 2, 12 SD RD CP D SF00048 ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER 14-Pin Plastic DIP –40 °C to +85°C 74ABT74 N 74ABT74 N SOT27-1 14-Pin plastic SO –40 °C to +85°C 74ABT74 D 74ABT74 D SOT108-1 14-Pin Plastic SSOP Type II –40 °C to +85°C 74ABT74 DB 74ABT74 DB SOT337-1 14-Pin Plastic TSSOP Type I –40 °C to +85°C 74ABT74 PW 74ABT74PW DH SOT402-1 |
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