MC74AC74DR2G

MC74AC74DR2G is a dual D-type, positive-edge-triggered flip-flop in the AC CMOS family. Each half provides D, CLK, asynchronous active-low PRE and CLR, and Q and Q̄ outputs. It latches D on the rising edge of CLK when PRE and CLR are deasserted; PRE forces Q high, CLR forces Q low. Operates from 2 to 6 V with low-power CMOS logic. DR2G denotes a RoHS-compliant packaging variant (often small-outline). Typical applications include storage elements, registers, counters, and timing circuits. Pinout (14-pin package): D1, CLK1, PRE1, CLR1, Q1, Q̄1, D2, CLK2, PRE2, CLR2, Q2, Q̄2, Vcc, GND.

Equivalent parts for MC74AC74DR2G (dual D-type edge-triggered flip-flops with async PRE/CLR) include:
- TI SN74AC74, SN74ACT74
- NXP/Nexperia 74HC74, 74HCT74
- ON Semiconductor MC74HC74, MC74HCT74
These are drop-in functionally similar devices from major vendors.

Concise features of MC74AC74DR2G:
- Dual D-type, positive-edge-triggered flip-flops (two independent FFs)
- Asynchronous direct-set (PRE) and direct-reset (CLR) inputs (active-low)
- Q and Q̄ outputs for each flip-flop
- Data (D) is sampled on the rising edge of the clock (CLK)
- CMOS 74AC family: low power consumption
- Wide supply range: typically 2 V to 6 V
- High-speed CMOS performance with fast propagation
- Compatible input/output levels for standard CMOS logic
Note: The device includes two sets of D, CLK, PRE, CLR, and Q/Q̄ per package; exact temperature/GRADE specs depend on the specific lot/variant.

Pin count: 14 pins (14-pin package).
Function: Dual D-type positive-edge-triggered flip-flops with asynchronous preset and clear. Each flip-flop captures D on the rising edge of its clock input (CP1, CP2) and provides Q and Q̅ outputs, with independent PRE and CLR inputs for each stage.

- Manufacturer: ON Semiconductor (ON Semiconductor Corporation). The MC74AC74DR2G is part of ON Semi’s logic IC lineup; the “MC” prefix reflects Motorola heritage.
- What kind of company: A global American semiconductor manufacturer that designs, manufactures, and markets analog, digital, and mixed-signal ICs and sensors for automotive, industrial, communications, consumer, and computing markets.

MC74AC74DR2G is a dual D-type positive-edge-triggered flip-flop with asynchronous preset and clear. Common applications include:
- Edge-triggered data storage and transfer in digital circuits
- State machines, sequential logic, counters, and register pipelines
- Clock-domain crossing and signal synchronization
- Simple frequency division and pulse generation using Q or Q̄
- Buffering/registers in microprocessors, DSPs, and communication interfaces
- Resettable storage for control/status flags in timing and sequencing circuits
Note: Each flip-flop has D, CP, Q, Q̄, PRE, and CLR inputs/outputs.

It comes in a 14-pin surface-mount SOIC (small-outline) package, RoHS-compliant (green).