Dual JK Flip Flop 7470

The Dual JK Flip Flop 7470 listing is for the 7470 TTL IC. Please note that the 7470 contains one J-K flip-flop, not two: it is an AND-gated, edge-triggered J-K flip-flop with direct preset and clear inputs and complementary Q and Q-bar outputs. It suits repairs of older TTL equipment, counters and digital logic lab work; when two flip-flops in one package are needed, dual J-K types such as the 7473 or 7476 are used instead.

Dual JK Flip Flop 7470 Specifications

• Function: single J-K flip-flop with AND-gated inputs
• Gated inputs: J1, J2 and an inverted J input; K1, K2 and an inverted K input
• Preset and clear: direct (asynchronous), active low
• Outputs: Q and Q-bar
• Clocking: edge-triggered
• Logic family: standard TTL, 5 V supply
• Pins: 14

Dual JK Flip Flop 7470 Applications

• Toggle (divide-by-2) stages and simple counters
• Storing one bit in sequential logic circuits
• Replacing a faulty 7470 in older TTL equipment
• Digital logic labs on J-K flip-flop truth tables

What's in the Box

• 1 × 7470 J-K flip-flop IC

Tip: Hold the preset and clear inputs high for normal clocked operation. Tie unused J1, J2, K1 and K2 inputs high and the inverted J and K inputs low, so that the AND gates pass the inputs you are using.

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