MC74ACT640 Datasheet, PDF (4/6 Pages) ON Semiconductor – Octal 3−State Inverting Transciever

t_r t_f
INPUT
A or B
t_PHL
90%
50%
10%
OUTPUT
A or B t_THL
90%
50%
10%
Figure 2.
MC74ACT640
SWITCHING WAVEFORMS
3.0 V
GND
t_PLH
t_TLH
T/R
OE
A OR B
A OR B
3.0 V
GND
50%
t_PZL t_PLZ
50%
t_PZH t_PHZ
50%
10%
90%
Figure 3.
3.0 V
GND
HIGH
IMPEDANCE
V_OL
V_OH
HIGH
IMPEDANCE
INPUT
DEVICE
UNDER
TEST
OUTPUT
450 W
C_L*
*Includes all probe and jig capacitance
Figure 4. Test Circuit
50 W SCOPE
TEST POINT
PDIP−20
20
MC74ACT640N
AWLYYWWG
1
MARKING DIAGRAMS
SOIC−20W
20
ACT640
AWLYYWWG
1
A
WL
YY, Y
WW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
SOEIAJ−20
20
74ACT640
AWLYWWG
1
http://onsemi.com
4