MC74HC165A Motorola, MC74HC165A Datasheet - Page 6

• Manufacturer Part Number: MC74HC165A
• Description: 8-Bit Serial or Parallel-Input/Serial-Output Shift Register
• Manufacturer: Motorola

MOTOROLA
MC54/74HC165A
OR CLOCK INHIBIT
CLOCK INHIBIT
OR CLOCK INHIBIT
Q H OR Q H
Q H OR Q H
INPUT H
CLOCK
INPUT S A
CLOCK
CLOCK
t PLH
t r
Figure 7. Serial–Shift, Clock–Inhibit Mode
10%
Figure 3. Parallel–Load Mode
50%
t TLH
90%
t su
50%
Figure 1. Serial–Shift Mode
10%
CLOCK 2 INHIBITED
50%
10%
90%
Figure 5. Serial–Shift Mode
50%
10%
90%
50%
50%
90%
t r
t w
50%
t PLH
t TLH
t su
1/f max
t rec
VALID
t PHL
50%
t f
t THL
t h
t f
t PHL
SWITCHING WAVEFORMS
t THL
V CC
GND
V CC
GND
V CC
GND
V CC
GND
V CC
GND
V CC
GND
6
PARALLEL LOAD
PARALLEL LOAD
SERIAL SHIFT/
SERIAL SHIFT/
OR CLOCK INHIBIT
PARALLEL LOAD
INPUTS A–H
SERIAL SHIFT/
Q H OR Q H
CLOCK
Figure 4. Parallel–Load Mode
Figure 2. Parallel–Load Mode
t PLH
* Includes all probe and jig capacitance
50%
t w
Figure 6. Serial–Shift Mode
50%
50%
DEVICE
Figure 8. Test Circuit
UNDER
TEST
t su
VALID
50%
t su
t h
50%
OUTPUT
High–Speed CMOS Logic Data
ASYNCHRONOUS PARALLEL
t PHL
t h
50%
(LEVEL SENSITIVE)
TEST POINT
LOAD
C L *
DL129 — Rev 6
V CC
GND
V CC
GND
V CC
GND
V CC
GND
V CC
GND