HD74HC166

Rev.3.00, Jan 31, 2006 page 5 of 6

Test Circuit

L

*

C includes the probe and fig capacitance.

Note:

Measurement point

C

L

Waveforms

Clear

Data

Clock

50%

50%

50%

50%

50%

50%

50%

50%

50%

50%

50%

50%

50%

0 V

0 V

0 V

1. Input wavwform : PRR

2. Propagation delay time (tPLH and tPHL)are measured at tn+1.

Proper shifting of data is verified at tn+8 with a functional test.

3. tn : bit time before clocking transition.

tn+1 : bit time after one clocking transition.

tn+8 : bit time after eight clocking transition.

Notes