参数资料
型号: 74AHCT244
厂商: NXP Semiconductors N.V.
英文描述: Octal buffer/line driver; 3-state
中文描述: 八路缓冲器/线路驱动器,3态
文件页数: 7/16页
文件大小: 80K
代理商: 74AHCT244
1999 Sep 28
7
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state
74AHC244; 74AHCT244
74AHCT family
Over recommended operating conditions; voltages are referenced to GND (ground = 0 V).
SYMBOL
PARAMETER
TEST CONDITIONS
T
amb
(
°
C)
UNIT
OTHER
V
CC
(V)
25
40 to +85
40 to +125
MIN.
TYP.
MAX. MIN. MAX. MIN. MAX.
2.0
V
IH
HIGH-level input
voltage
LOW-level input
voltage
HIGH-level output
voltage; all outputs
HIGH-level output
voltage
LOW-level output
voltage; all outputs
LOW-level output
voltage
input leakage
current
3-state output
OFF current
4.5 to 5.5 2.0
2.0
V
V
IL
4.5 to 5.5
0.8
0.8
0.8
V
V
OH
V
I
= V
IH
or V
IL
;
I
O
=
50
μ
A
V
I
= V
IH
or V
IL
;
I
O
=
8.0 mA
V
I
= V
IH
or V
IL
;
I
O
= 50
μ
A
V
I
= V
IH
or V
IL
;
I
O
= 8 mA
V
I
= V
IH
or V
IL
4.5
4.4
4.5
4.4
4.4
V
4.5
3.94
3.8
3.70
V
V
OL
4.5
0
0.1
0.1
0.1
V
4.5
0.36
0.44
0.55
V
I
I
5.5
0.1
1.0
2.0
μ
A
I
OZ
V
I
= V
IH
or V
IL
;
V
O
= V
CC
or GND
per input pin;
other inputs at
V
CC
or GND;
I
O
= 0
V
I
= V
CC
or GND;
I
O
= 0
V
I
= V
CC
2.1 V
other inputs at
V
CC
or GND;
I
O
= 0
5.5
±
0.25
±
2.5
±
10.0
μ
A
I
CC
quiescent supply
current
additional
quiescent supply
current per input
pin
input capacitance
5.5
4.0
40
80
μ
A
I
CC
4.5 to 5.5
1.35
1.5
1.5
mA
C
I
3
10
10
10
pF
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