PHILIPS 74F651A/74F652A Transceivers/registers handbook

74F651A/74F652A are bus transceiver circuits with 3-State outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or the internal registers. The devices combine 74F245 and two 74F374 type functions in one chip, and have high impedance base inputs for reduced loading (70µA in high and low states). They also feature independent registers for A and B buses, multiplexed real-time and stored data, and choice of non-inverting and inverting data paths.

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