MC10H141

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3

LOGIC DIAGRAM

PARALLEL ENTER

SHIFT RIGHT

SHIFT LEFT

HOLD

DQ

C

1 OF 4

DECODER

D3

DL

S1

DR

C

Q3

S2

D2

D1

D0

Q2

Q1

Q0

DQ

C

DQ

C

DQ

C

APPLICATION INFORMATION

The MC10H141 is a four-bit universal shift register which

performs shift left, or shift right, serial/parallel in, and

serial/parallel out operations with no external gating. Inputs

S1 and S2 control the four possible operations of the register

without external gating of the clock. The flip-flops shift

information on the positive edge of the clock. The four

operations are stop shift, shift left, shift right, and parallel

entry of data. The other six inputs are all data type inputs;

four for parallel entry data, and one for shifting in from the

left (DL) and one for shifting in from the right (DR).