參數(shù)資料
型號： 744ALS244A-1D
廠商： NXP Semiconductors N.V.
英文描述： CRYSTAL 9.8304MHZ SERIES SMD
中文描述： 八路緩沖三態(tài)
文件頁數(shù)： 3/9頁
文件大小： 110K
代理商： 744ALS244A-1D
Philips Semiconductors
Product specification
74ALS244A/74ALS244A-1
Octal buffer (3-State)
1991 Feb 08
3
LOGIC DIAGRAM
V
=
Pin 20
GND = Pin 10
Ia0
SF00230
OEa
Ia3
Ia2
Ia1
2
4
6
8
1
Ya0
Ya1
Ya2
Ya3
18
16
14
12
Ib0
Ib1
Ib2
Ib3
OEb
17
15
13
11
19
3
5
7
9
Yb0
Yb1
Yb2
Yb3
FUNCTION TABLE
INPUTS
OUTPUTS
OEa
Ia
OEb
Ib
Ya
Yb
L
L
L
L
L
L
L
H
L
H
H
H
H
X
H
X
Z
Z
H =
L
X =
Z =
High voltage level
Low voltage level
Don’t care
High impedance “off” state
=
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL
PARAMETER
RATING
UNIT
V
CC
V
IN
I
IN
V
OUT
Supply voltage
–0.5 to +7.0
V
Input voltage
–0.5 to +7.0
V
Input current
–30 to +5
mA
Voltage applied to output in High output state
–0.5 to V
CC
48
V
I
OUT
Current applied to output in Low output state
All versions
mA
-1 version
96
mA
T
amb
T
stg
Operating free-air temperature range
0 to +70
°
C
°
C
Storage temperature range
–65 to +150
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
NOM
MAX
V
CC
V
IH
V
IL
I
IK
I
OH
Supply voltage
4.5
5.0
5.5
V
High-level input voltage
2.0
V
Low-level input voltage
0.8
V
Input clamp current
–18
mA
High-level output current
–15
mA
I
OL
Low level output current
Low-level output current
All versions
24
mA
-1 versions
48
1
mA
T
amb
Operating free-air temperature range
0
+70
°
C
NOTES:
1. The 48mA limit applies only under the condition of V
CC
= 5.0V
±
5%.
相關PDF資料
PDF描述
74ALS244A-1DB Octal buffer 3-State
74ALS244A-1N CRYSTAL 9.84375 MHZ PF SMD
74ALS244A Octal buffer (3-State)(八通道緩沖器（三態(tài)）)
74ALS244 Octal buffer 3-State
74ALS244AD Octal buffer 3-State
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