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| 型号： | 74ALS157 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | Quad 2-input data selector/multiplexer, non-inverting(四通道2输入数据选择器/多路复用器，同相) |
| 中文描述： | 四2输入数据选择器/多路，非反相（四通道2输入数据选择器/多路复用器，同相） |
| 文件页数： | 4/9页 |
| 文件大小： | 109K |
| 代理商： | 74ALS157 |
Philips Semiconductors
Product specification
74ALS157/74ALS158
Data selector/multiplexer
1991 Feb 08
4
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
Supply voltage
–0.5 to +7.0
V
V
IN
Input voltage
–0.5 to +7.0
V
I
IN
Input current
–30 to +5
mA
V
OUT
Voltage applied to output in High output state
–0.5 to V
CC
V
I
OUT
Current applied to output in Low output state
16
mA
T
amb
Operating free-air temperature range
0 to +70
°
C
T
stg
Storage temperature range
–65 to +150
°
C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
LIMITS
UNIT
MIN
NOM
MAX
V
CC
Supply voltage
4.5
5.0
5.5
V
V
IH
High-level input voltage
2.0
V
V
IL
Low-level input voltage
0.8
V
I
Ik
Input clamp current
–18
mA
I
OH
High-level output current
–0.4
mA
I
OL
Low-level output current
8
mA
T
amb
Operating free-air temperature range
0
+70
°
C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONS
1
LIMITS
UNIT
MIN
TYP
2
MAX
V
OH
High-level output voltage
V
CC
=
±
10%, V
IL
= MAX,
V
IH
= MIN
I
OH
= MAX
V
CC
– 2
V
V
OL
Low level output voltage
Low-level output voltage
V
= MIN, V
= MAX,
CC
V
IH
= MIN
I
OL
= 4mA
0.25
0.40
V
IL
I
OL
= 8mA
0.35
0.50
V
V
IK
Input clamp voltage
V
CC
= MIN, I
I
= I
IK
–0.73
–1.5
V
I
I
Input current at minimum input voltage
V
CC
= MAX, V
I
= 7.0V
0.1
mA
I
IH
High-level input current
V
CC
= MAX, V
I
= 2.7V
20
μ
A
I
IL
Low-level input current
V
CC
= MAX, V
I
= 0.4V
–0.1
mA
I
O
Output current
3
V
CC
= MAX, V
O
= 2.25V
–30
–112
mA
I
CC
Supply current (total)
74ALS157
V
CC
= MAX
6
11
mA
74ALS158
6
10
mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V
CC
= 5V, T
amb
= 25
°
C.
3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
OS
.
相关PDF资料 |
PDF描述 |
|---|---|
| 74ALS158 | Quad 2-input data selector/multiplexer, inverting(四通道2输入数据选择器/多路复用器，反相) |
| 74ALS157N | Data selector/multiplexer |
| 74ALS158D | Data selector/multiplexer |
| 74ALS158N | Data selector/multiplexer |
| 74ALS161B | 4-bit binary counter(4位二进制计数器) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 74ALS157D | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Data selector/multiplexer |
| 74ALS157MX | 制造商:Texas Instruments 功能描述: |
| 74ALS157N | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Data selector/multiplexer |
| 74ALS158 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Data selector/multiplexer |
| 74ALS158D | 制造商: 功能描述: 制造商:undefined 功能描述: |
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