These devices are transistor-transistor logic edge-triggered dual D-type flip-flops, with direct, clear and preset inputs and complementary Q and Q outputs, in the FJ series of integrated circuits. The FJJ131 corresponds to ’74 Series’ type 7474N, the FJJ136 corresponds to ’64 Series’ type 6474N.
Manufactured: 1974 week 23
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- FJJ131AC (1), manufactured 1974 week 23
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- FJJ131A (2), manufactured 1974 week 3
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- FJJ131A (3), manufactured 1974 week 2
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- FJJ131A (4), manufactured 1974 week 17
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- FJJ131A (5), manufactured 1972 week 9
