
Philips Semiconductors
Product specification
74ABT244
Octal buffer/line driver (3-State)
1998 Jan 16
4
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
Min
Max
V
CC
DC supply voltage
4.5
5.5
V
V
I
Input voltage
0
V
CC
V
V
IH
High-level input voltage
2.0
V
V
IL
Low-level Input voltage
0.8
V
I
OH
High-level output current
–32
mA
I
OL
Low-level output current
64
mA
t/
v
Input transition rise or fall rate
0
5
ns/V
T
amb
Operating free-air temperature range
–40
+85
°
C
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
= +25
°
C
T
amb
= –40
°
C
°
C
UNIT
Min
Typ
Max
Min
Max
V
IK
Input clamp voltage
V
CC
= 4.5V; I
IK
= –18mA
V
CC
= 4.5V; I
OH
= –3mA; V
I
= V
IL
or V
IH
V
CC
= 5.0V; I
OH
= –3mA; V
I
= V
IL
or V
IH
V
CC
= 4.5V; I
OH
= –32mA; V
I
= V
IL
or V
IH
V
CC
= 4.5V; I
OL
= 64mA; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
I
= GND or 5.5V
V
CC
= 0.0V; V
O
or V
I
≤
4.5V
V
CC
= 2.0V; V
O
= 0.5V; V
I
= GND or V
CC
;
V
OE
= Don’t care
V
CC
= 5.5V; V
O
= 2.7V; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
O
= 0.5V; V
I
= V
IL
or V
IH
V
CC
= 5.5V; V
O
= 5.5V; V
I
= GND or V
CC
V
CC
= 5.5V; V
O
= 2.5V
V
CC
= 5.5V; Outputs High, V
I
= GND or V
CC
V
CC
= 5.5V; Outputs Low, V
I
= GND or V
CC
V
CC
= 5.5V; Outputs 3-State;
V
I
CC
Outputs enabled, one data input at 3.4V,
other inputs at V
CC
or GND; V
CC
= 5.5V
Outputs 3-State, one data input at 3.4V, other
inputs at V
CC
or GND; V
CC
= 5.5V
Outputs 3-State, one enable input at 3.4V,
other inputs at V
CC
or GND; V
CC
= 5.5V
–0.9
–1.2
–1.2
V
2.5
2.9
2.5
V
V
OH
High-level output voltage
3.0
3.4
3.0
V
2.0
2.4
2.0
V
V
OL
I
I
I
OFF
Low-level output voltage
0.42
0.55
0.55
V
Input leakage current
Power-off leakage current
±
0.01
±
5.0
±
1.0
±
100
±
1.0
±
100
μ
A
μ
A
I
PU/PD
Power-up/down 3-State
output current
3
±
5.0
±
50
±
50
μ
A
I
OZH
I
OZL
I
CEX
I
O
I
CCH
I
CCL
3-State output High current
5.0
50
50
μ
A
μ
A
μ
A
3-State output Low current
–5.0
–50
–50
Output HIgh leakage current
5.0
50
50
Short-circuit output current
1
–40
–100
–180
–40
–180
mA
50
250
250
μ
A
Quiescent supply current
24
30
30
mA
I
CCZ
50
250
250
μ
A
0.5
1.5
1.5
mA
I
CC
Additional supply current per
input pin
2
50
250
250
μ
A
0.5
1.5
1.5
mA
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4V.
3. This parameter is valid for any V
CC
between 0V and 2.1V with a transition time of up to 10msec. For V
CC
= 2.1V to V
CC
= 5V
transition time of up to 100
μ
sec is permitted.
10%, a