MC74HC299 Datasheet, PDF (6/8 Pages) Motorola, Inc – 8-Bit Bidirectional Universal Shift Register with Parallel I/O

MC74HC299
SWITCHING WAVEFORMS
CLOCK
QA′, QH′,
QA–QH
tr
tf
90%
50%
10%
tw
1/fmax
tPLH
tPHL
90%
50%
10%
tTLH
tTHL
Figure 1.
tw
VCC
VCC
RESET
50%
GND
GND
tPHL
QA′, QH′,
QA–QH
CLOCK
50%
trec
VCC
50%
GND
Figure 2.
OE1 OR OE2
QA–QH
50%
tPZL tPLZ
50%
tPZH tPHZ
50%
Figure 3a.
VCC
GND
HIGH
IMPEDANCE
10% _VOL
90% ^VOH
HIGH
IMPEDANCE
S1 OR S2
S2 OR S1
QA–QH
50%
tPZL tPLZ
50%
tPZH tPHZ
50%
Figure 3b.
VCC
GND
VCC
GND
HIGH
IMPEDANCE
10% _VOL
90% ^VOH
HIGH
IMPEDANCE
MODE SELECT
OR DATA
CLOCK
VALID
50%
tsu
th
50%
Figure 4.
DEVICE
UNDER
TEST
VCC
GND
VCC
GND
TEST POINT
OUTPUT
1 kΩ
CL*
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
CL*
* Includes all probe and jig capacitance
Figure 5. Test Circuit
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
* Includes all probe and jig capacitance
Figure 6. Test Circuit
MOTOROLA
3–6
High–Speed CMOS Logic Data
DL129 — Rev 6