MC74VHCT374A Datasheet, PDF (4/6 Pages) ON Semiconductor – Octal D-Type Flip-Flop with 3-State Output

MC74VHCT374A
SWITCHING WAVEFORMS
CP
1.5V
tW
1/fmax
tPLH
tPHL
Q
1.5V
Figure 1.
D
CP
3V
OE
1.5V
GND
Q
VOH
Q
VOL
VALID
1.5V
tsu
th
1.5V
Figure 3.
tPZL tPLZ
1.5V
tPZH tPHZ
1.5V
Figure 2.
3V
GND
3V
GND
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 4.
* Includes all probe and jig capacitance
Figure 5.
EXPANDED LOGIC DIAGRAM
D0
3
DQ
D1
4
DQ
D2
7
DQ
D3
8
DQ
D4
13
DQ
D5
14
DQ
D6
17
DQ
D7
18
DQ
11
CP
1
OE
C
C
C
C
C
C
C
C
2
5
6
9
12
15
16
19
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
MOTOROLA
4
VHC Data – Advanced CMOS Logic
DL203 — Rev 1