The TC40H194 is a 4-bit bidirectional bit
register, which permits right shift (in the direc-
tion from QA to Qp) and left shift (in the direc-
tion from QD to QA) operations.
When CLEAR terminal is set to "L" level, output
goes to "L" level regardless of other inputs. All
the other operations synchronize with the rising
edge of CLOCK.
The function and pin assignment of this
register are the same as those of the TTL74194 and
the LSTTL 74LS194.