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description

The ‘73, and 'H73, contain two independent

JK flip-flops with individual J-K, clock, and

direct clear inputs. The ‘73, and ‘H73, are

positive pulse-triggered flip-flops. J-K input is

loaded into the master while the clock is high and

transferred to the slave on the high-to-low

transition. For these devices the J and K inputs

must be stable while the clock is high.

The 'LS73A contains two independent negative-

edge-triggered flip-flops. The J and K inputs

must be stable one setup time prior to the high-

to-low clock transition for predictable operation.

When the clear is low, it overrides the clock and

data inputs forcing the Q output low and the @

output high.

The SN5473, SN54H73, and the SN54LS73A

are characterized for operation over the full

military temperature range of —55°C to 125°C.

The SN7473, and the SN74LS73A are

characterized for operation from 0°C to 70°C.