MC74VHCT240A Datasheet, PDF (4/6 Pages) ON Semiconductor – Octal Bus Buffer/Line Driver

MC74VHCT240A
A or B
tPHL
YA or YB
1.5V
1.5V
Figure 1.
SWITCHING WAVEFORMS
3V
GND
tPLH
VOH
VOL
OEA or OEB
YA or YB
YA or YB
1.5V
tPZL tPLZ
1.5V
tPZH tPHZ
1.5V
Figure 2.
3V
GND
HIGH
IMPEDANCE
VOL +0.3V
VOH –0.3V
HIGH
IMPEDANCE
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
CL*
TEST CIRCUITS
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 kΩ
CL*
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
* Includes all probe and jig capacitance
Figure 3. Test Circuit
* Includes all probe and jig capacitance
Figure 4. Test Circuit
INPUT
Figure 5. Input Equivalent Circuit
MOTOROLA
4
VHC Data – Advanced CMOS Logic
DL203 — Rev 1