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參數(shù)資料
| 型號： | 74ALS244 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路緩沖器和線路驅(qū)動器，三態(tài)輸出 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 110K |
| 代理商： | 74ALS244 |
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(guān)PDF資料 |
PDF描述 |
|---|---|
| 74ALS244 | Octal 3-STATE Bus Driver |
| 74ALS245A-1D | Single 8-bit Bus Transceiver |
| 74ALS251D | 8-input multiplexer 3-State |
| 74ALS251 | 8-input multiplexer (3-State)(8輸入多路復(fù)用器（三態(tài)）) |
| 74ALS251N | 8-input multiplexer 3-State |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74ALS244A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal buffer 3-State |
| 74ALS244A-1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal buffer 3-State |
| 74ALS244A-1D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
| 74ALS244A-1DB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal buffer 3-State |
| 74ALS244A-1N | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal buffer 3-State |
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