74F673A

Serial-to-parallel converter
16-bit serial I/O shift register
16-bit parallel-out storage register
Recirculating serial shifting
Recirculating parallel transfer
Common serial data I/O pin
Slim 24 lead package

Storage Temperature                                                                        -65to +150
Ambient Temperature under Bias                                                      -55to +125
Junction Temperature under Bias                                                      -55to +150
VCC Pin Potential to Ground Pin                                                         -0.5V to +7.0V
Input Voltage (Note 2)                                                                       -0.5V to +7.0V
Input Current (Note 2)                                                                 -30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with VCC = 0V)
Standard Output                                                                                     -0.5V to VCC
3-STATE Output                                                                                    -0.5V to +5.5V
Current Applied to Output
in LOW State (Max)                                                               twice the rated IOL (mA)

The 74F673A contains a 16-bit serial-in, serial-out shift register and a 16-bit Parallel-Out storage register. A single pin serves either as an input for serial entry or as a 3- STATE serial output. In the Serial-Out mode, the data recirculates in the shift register. By means of a separate clock, the contents of the shift register are transferred to the storage register for parallel outputting. The contents of the storage register of the 74F673A can also be parallel loaded back into the shift register. A HIGH signal on the Chip Select input prevents both shifting and parallel transfer. The storage register may be cleared via STMR.