Datasheet
Philips Semiconductors Product specification
74ABT244Octal buffer/line driver (3-State)
1998 Jan 16
4
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
SYMBOL
PARAMETER
Min Max
UNIT
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
to +85°C
UNIT
Min Typ Max Min Max
V
IK
Input clamp voltage V
CC
= 4.5V; I
IK
= –18mA –0.9 –1.2 –1.2 V
V
CC
= 4.5V; I
OH
= –3mA; V
I
= V
IL
or V
IH
2.5 2.9 2.5 V
V
OH
High-level output voltage V
CC
= 5.0V; I
OH
= –3mA; V
I
= V
IL
or V
IH
3.0 3.4 3.0 V
V
CC
= 4.5V; I
OH
= –32mA; V
I
= V
IL
or V
IH
2.0 2.4 2.0 V
V
OL
Low-level output voltage V
CC
= 4.5V; I
OL
= 64mA; V
I
= V
IL
or V
IH
0.42 0.55 0.55 V
I
I
Input leakage current V
CC
= 5.5V; V
I
= GND or 5.5V ±0.01 ±1.0 ±1.0 µA
I
OFF
Power-off leakage current V
CC
= 0.0V; V
O
or V
I
≤
4.5V ±5.0 ±100 ±100 µA
I
PU/PD
Power-up/down 3-State
output current
3
V
CC
= 2.0V; V
O
= 0.5V; V
I
= GND or V
CC
;
V
OE
= Don’t care
±5.0 ±50 ±50 µA
I
OZH
3-State output High current V
CC
= 5.5V; V
O
= 2.7V; V
I
= V
IL
or V
IH
5.0 50 50 µA
I
OZL
3-State output Low current V
CC
= 5.5V; V
O
= 0.5V; V
I
= V
IL
or V
IH
–5.0 –50 –50 µA
I
CEX
Output HIgh leakage current V
CC
= 5.5V; V
O
= 5.5V; V
I
= GND or V
CC
5.0 50 50 µA
I
O
Short-circuit output current
1
V
CC
= 5.5V; V
O
= 2.5V –40 –100 –180 –40 –180 mA
I
CCH
V
CC
= 5.5V; Outputs High, V
I
= GND or V
CC
50 250 250 µA
I
CCL
Quiescent suppl
y
current
V
CC
= 5.5V; Outputs Low, V
I
= GND or V
CC
24 30 30 mA
I
CCZ
Quiescent
su ly
current
V
CC
= 5.5V; Outputs 3-State;
V
I
= GND or V
CC
50 250 250 µA
Outputs enabled, one data input at 3.4V,
other inputs at V
CC
or GND; V
CC
= 5.5V
0.5 1.5 1.5 mA
∆I
CC
Additional supply current per
input pin
2
Outputs 3-State, one data input at 3.4V, other
inputs at V
CC
or GND; V
CC
= 5.5V
50 250 250 µA
Outputs 3-State, one enable input at 3.4V,
other inputs at V
CC
or GND; V
CC
= 5.5V
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 10%, a
transition time of up to 100µsec is permitted.