HD74HC164 Просмотр технического описания (PDF) - Renesas Electronics

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HD74HC164

8-bit Parallel-out Shift Register

Renesas Electronics 

HD74HC164

Test Circuit

Measurement point

CL*

Note: CL includes the probe and fig capacitance.

Waveforms

Clear

Clock

Serial A, B

Output QA

(Note 3)

tf

tr

90%

50%

10% 10%

tW (Clear)

90%

50%

trem

tf

tr

90%

10%

90%

50%

50%

10%

tW (Clock)

tr

th

10%

90%

50%

50%

tPHL

tsu tPLH

tW (Clock)

50%

50%

tsu

90%

50%

10%

tf

th

50%

tPHL

50%

tTHL

50%

tTLH

50%

VCC

0V

VCC

0V

VCC

0V

VOH

VOL

Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns

2. The output are measured one at a time with one transition per measurement.

3. See function table for QB to QH outputs.

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

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