Switching Characteristics

Symbol

Parameter

Units

Min

Max

Maximum Shift Frequency

30

MHz

Propagation Delay

35

ns

25

Propagation Delay

35

ns

Output Enable Time

20

ns

20

Output Disable Time

17

ns

23

Functional Description

The ‘LS395 contains four D-type edge-triggered flip-flops

and auxiliary gating to select a D input either from a Parallel

the S input enables the serial inputs for shift-right opera-

tions as indicated in the Truth Table

State changes are initiated by HIGH-to-LOW transitions on

inputs can change when the Clock is in either state provid-

ed that the recommended setup and hold times are ob-

served When the S input is LOW a CP HIGH-LOW tran-

sition transfers data in O0 to O1 O1 to O2 and O2 to O3 A

left-shift is accomplished by connecting the outputs back to

O2 to P1 and O1 to P0 with P3 acting as the linking input

from another package

When the OE input is HIGH the output buffers are disabled

and the O0 – O3 outputs are in a high impedance condition

The shifting parallel loading or resetting operations can still

be accomplished however

Logic Diagram

TLF9833 – 3

3