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74F74 Datasheet(PDF) 2 Page - NXP Semiconductors |
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74F74 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 8 page Philips Semiconductors Product specification 74F74 Dual D-type flip-flop 2 1996 Mar 12 853 0335 16554 FEATURE • Industrial temperature range available (–40°C to +85°C) DESCRIPTION The 74F74 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 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 TYPE TYPICAL fmax TYPICAL SUPPLY CURRENT (TOTAL) 74F74 125MHz 11.5mA ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C INDUSTRIAL RANGE VCC = 5V ±10%, Tamb = –40°C to +85°C PKG. DWG. # 14-pin plastic DIP N74F74N I74F74N SOT27-1 14-pin plastic SO N74F74D I74F74D SOT108-1 INPUT AND OUTPUT LOADING AND FAN OUT TABLE PINS DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW D0, D1 Data inputs 1.0/1.0 20 µA/0.6mA CP0, CP1 Clock inputs (active rising edge) 1.0/1.0 20 µA/0.6mA SD0, SD1 Set inputs (active low) 1.0/3.0 20 µA/1.8mA RD0, RD1 Reset inputs (active low) 1.0/3.0 20 µA/1.8mA Q0, Q1, Q0, Q1 Data outputs 50/33 1.0mA/20mA NOTE: One (1.0) FAST unit load is defined as: 20 µA in the high state and 0.6mA in the low state. LOGIC SYMBOL Q0 Q0 Q1 Q1 56 98 VCC = Pin 14 GND = Pin 7 3 4 1 11 10 13 CP0 SD0 RD0 CP1 SD1 RD1 D0 D1 212 SF00046 IEC/IEEE SYMBOL 4 3 2 1 10 11 12 13 5 6 9 8 & S S C1 C2 R 1D 2D R SF00047 |
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