74ABT245 Octal Bi-Directional Transceiver with 3-STATE Outputs
DC Electrical Characteristics
SOIC package.
Symbol
V
OLP
V
OLV
V
OHV
V
IHD
V
ILD
Parameter
Quiet Output Maximum Dynamic V
OL
Quiet Output Minimum Dynamic V
OL
Minimum HIGH Level Dynamic
Output Voltage
Minimum HIGH Level Dynamic Input
Voltage
Maximum LOW Level Dynamic Input
Voltage
V
CC
5.0
5.0
5.0
5.0
5.0
Conditions
C
L
=
50 pF,
R
L
=
500Ω
T
A
=
25°C
(3)
T
A
=
25°C
(3)
T
A
=
25°C
(5)
T
A
=
25°C
(4)
T
A
=
25°C
(4)
Min.
–1.3
2.7
2.0
Typ.
0.7
–1.0
3.1
1.7
0.9
Max.
1.0
Units
V
V
V
V
0.6
V
Notes:
3. Max number of outputs defined as (n). n-1 data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not
tested.
4. Max number of data inputs (n) switching. n-1 inputs switching 0V to 3V. Input-under-test switching: 3V to threshold
(V
ILD
), 0V to threshold (V
IHD
). Guaranteed, but not tested.
5. Max number of outputs defined as (n). n – 1 data inputs are driven 0V to 3V. One output HIGH. Guaranteed, but not
tested.
AC Electrical Characteristics
SOIC and SSOP package.
T
A
=
+25°C,
V
CC
=
+5V,
C
L
=
50pF
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Output Disable Time
T
A
=
–55°C to +125°C,
V
CC
=
4.5V to 5.5V,
C
L
=
50pF
Min.
1.0
1.0
1.0
2.0
1.7
1.7
T
A
=
–40°C to +85°C,
V
CC
=
4.5V to 5.5V,
C
L
=
50pF
Min.
1.0
1.0
1.5
1.5
1.0
1.0
Parameter
Propagation Delay,
Data to Outputs
Output Enable Time
Min.
1.0
1.0
1.5
1.5
1.0
1.0
Typ.
2.1
2.4
3.2
3.7
3.6
3.3
Max.
3.6
3.6
6.0
6.0
6.1
5.6
Max.
4.8
4.8
6.7
7.5
7.4
6.5
Max.
3.6
3.6
6.0
6.0
6.1
5.6
Units
ns
ns
ns
©1991 Fairchild Semiconductor Corporation
74ABT245 Rev. 1.4
www.fairchildsemi.com
5
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
