7476 IC Dual Master-Slave J-K Flip-Flops DIP-16

Description

74 76 IC Dual Master-Slave J-K Flip-Flops The 7476 is a dual master-slave J-K flip-flop integrated circuit in a 16-pin DIP package. Each of the two flip-flops features separate J and K inputs, a clock input, and asynchronous preset and clear inputs, allowing independent control and initialization. On the rising (or falling, depending on the variant) edge of the clock, the master captures the J/K inputs, while the slave outputs are then updated, preventing race conditions. The outputs include both Q and Q̅ (not-Q), providing complementary signals. Thanks to its master-slave architecture, the 7476 avoids the unstable “race” behavior seen in simpler J-K circuits. This makes it suitable for use in counters, registers, sequential logic circuits, and digital control systems where edge-triggered, bistable storage is needed. Features Contains two independent J-K master-slave flip-flops in a single 16-pin package. Provides both Q and Q̅ (complementary outputs) for each flip-flop. Equipped with asynchronous preset and clear inputs for direct setting or resetting. Operates with edge-triggered clocking to prevent race conditions. Compatible with standard TTL logic levels. High noise immunity and reliable switching performance. Designed with master-slave architecture for stable operation. Standard DIP-16 package, easy for prototyping and PCB integration. Widely used in counters, registers, shift storage, and sequential logic systems. Pin Layout Pin Configuration Pin Number Pin Name Description 5 Vcc Powers the IC typically with 5V 13 Ground Connected to the ground of the system JK Flip Flop – 1 / JK Flip Flop – 2 1,6 Clock-1/ Clock-2 These pins must be provided with a clock pulse for the flip-flop 2,7 Preset-1 / Preset-2 When the Preset is high the flip flop will set Q=1 and not Q=0 3, 8 Clear-1/Clear-2 When Clear is high the flip flop will set Q=0 and not Q=1 12,16 K-1/ K-2 Input pin of the Flip Flop 4,9 J-1 / J-2 Another Input pin of the Flip Flop 10,14 Q-1(bar) / Q-2 (bar) The inverted output pin of Flip Flop 11,15 Q-1 / Q-2 Output Pin of the Flip Flop Specifications Parameter Typical Value Conditions / Notes V_CC (supply voltage) 5.0 V Nominal operating voltage V_IH (min input HIGH voltage) 2.0 V For J, K, Clock, Preset, Clear V_IL (max input LOW voltage) 0.8 V Input low level threshold V_OH (min output HIGH voltage) ~ 2.7–3.5 V Depends on loading (pull-up, fan-out) V_OL (max output LOW voltage) ~ 0.2 V With standard load conditions Propagation delay, t_PLH / t_PHL ~ 20–50 ns From Clock to outputs, depending on load Input leakage current (I_I) ±20 µA Typical input leakage for J, K, Preset, Clear Operating temperature range 0 to 70 °C (commercial) Standard ambient range Applications Frequency division. Binary counters. Shift registers. Toggle flip-flop applications. Digital memory elements. State machines. Pulse synchronization. Debouncing circuits. Control circuits. Package Contents 1 x 7476 IC Dual Master-Slave J-K Flip-Flops DIP-16 Datasheet 7476

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