54F648

Obsolete 54F 74F646  74F646B  54F 74F648 Octal Transceiver Register with TRI-STATE Outputs December 1994 54F 74F646  74F646B  54F 74F648 Octal Transceiver Register with TRI-STATE Outputs General Description These devices consist of bus transceiver circuits with TRISTATE D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes to a high logic level Control G and direction pins are provided to control the transceiver function In the transceiver mode data present at the high impedance port may be stored in either the A or the B register or in both The select controls can multiplex stored and real-time (transparent mode) data The direction control determines which bus will receive data when the enable control G is Active LOW In the isolation mode (control G HIGH) A data may be stored in the B register and or B data may be stored in the A register Features Y Independent registers for A and B buses Y Multiplexed real-time and stored data Y ’F648 has inverting data paths Y ’F646 ’F646B have non-inverting data paths Y ’F646B is a faster version of the ’F646 Y TRI-STATE outputs Y 300 mil slim DIP Y Guaranteed 4000V minimum ESD protection Commercial 74F646SPC 74F646SC (Note 1) 74F646MSA (Note 1) 74F646BSPC 74F646BSC (Note 1) 74F648SPC 74F648SC (Note 1) Military 54F646DM (Note 2) 54F646FM (Note 2) 5...