74ABT245 Octal Bi-Directional Transceiver with 3-STATE Outputs
DC Electrical Characteristics
Symbol
V
IH
V
IL
V
CD
V
OH
V
OL
I
IH
I
BVI
I
BVIT
I
IL
V
ID
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
Output LOW Voltage
Input HIGH Current
Input HIGH Current Breakdown
Test
Input HIGH Current Breakdown
Test (I/O)
Input LOW Current
Input Leakage Test
V
CC
Conditions
Recognized HIGH Signal
Recognized LOW Signal
Min.
2.0
Typ.
Max.
0.8
–1.2
Units
V
V
V
V
Min.
Min.
Min.
Min.
Max.
Max.
Max.
Max.
0.0
0–5.5V
0–5.5V
Max.
Max.
0.0
Max.
Max.
Max.
Max.
I
IN
=
–18 mA (OE, T/R)
I
OH
=
–3 mA (A
n
, B
n
)
I
OH
=
–32 mA (A
n
, B
n
)
I
OL
=
64 mA (A
n
, B
n
)
V
IN
=
2.7V (OE, T/R)
V
IN
=
V
CC
(OE, T/R)
V
IN
=
7.0V (OE, T/R)
V
IN
=
5.5V (A
n
, B
n
)
V
IN
=
0.5V (OE, T/R)
V
IN
=
0.0V (OE, T/R)
I
ID
=
1.9 µA (OE, T/R),
All Other Pins Grounded
V
OUT
=
2.7V (A
n
, B
n
),
OE
=
2.0V
V
OUT
=
0.5V (A
n
, B
n
),
OE
=
2.0V
V
OUT
=
0.0V (A
n
, B
n
)
V
OUT
=
V
CC
(A
n
, B
n
)
V
OUT
=
5.5V (A
n
, B
n
),
All Others GND
All Outputs HIGH
All Outputs LOW
OE
=
V
CC
, T/R
=
GND or
V
CC
, All Other GND or V
CC
V
I
=
V
CC
– 2.1V
OE, T/R V
I
=
V
CC
– 2.1V
Data Input V
I
=
V
CC
– 2.1V,
All Others at V
CC
or GND.
–100
4.75
2.5
2.0
0.55
1
1
7
100
–1
–1
V
µA
µA
µA
µA
V
I
IH
+ I
OZH
Output Leakage Current
I
IL
+ I
OZL
Output Leakage Current
I
OS
I
CEX
I
ZZ
I
CCH
I
CCL
I
CCZ
I
CCT
Output Short-Circuit Current
Output HIGH Leakage Current
Bus Drainage Test
Power Supply Current
Power Supply Current
Power Supply Current
Additional
I
CC
/Input
Outputs Enabled
Outputs 3-STATE
Outputs 3-STATE
I
CCD
Dynamic I
CC
No Load
10
–10
–275
50
100
50
30
50
2.5
2.5
50
0.1
µA
µA
mA
µA
µA
µA
mA
µA
mA
mA
µA
mA/
MHz
Max.
Outputs Open, OE
=
GND,
T/R
=
GND or V
CC
,
One Bit Toggling,
50% Duty Cycle
©1991 Fairchild Semiconductor Corporation
74ABT245 Rev. 1.4
www.fairchildsemi.com
4
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
