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参数资料
| 型号： | 74ALS138D |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 通用总线功能 |
| 英文描述： | 1-of-8 decoder/demultiplexer |
| 中文描述： | ALS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16 |
| 封装： | PLASTIC, SO-16 |
| 文件页数： | 5/8页 |
| 文件大小： | 76K |
| 代理商： | 74ALS138D |
Philips Semiconductors
Product specification
74ALS138
1-of-8 decoder/demultiplexer
1996 Jul 03
5
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
T
amb
= 0
°
C to +70
°
C
V
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500
UNIT
MIN
MAX
t
PLH
t
PHL
Propagation delay
An
to Qn
Waveform 1, 2
3.0
3.0
22.0
18.0
ns
t
PLH
t
PHL
Propagation delay
E1, E2 to Qn
Waveform 2
3.0
3.0
17.0
17.0
ns
t
PLH
t
PHL
Propagation delay
E2
to Qn
Waveform 1
3.0
3.0
17.0
17.0
ns
AC WAVEFORMS
For all waveforms, V
M
= 1.3V.
V
M
V
M
V
M
V
M
Qn
An, E2
t
PHL
t
PLH
SF00179
Waveform 1.
Propagation Delay for Inverting Outputs
V
M
V
M
V
M
V
M
Qn
An, E0, E1
t
PHL
t
PLH
SF00180
Waveform 2.
Propagation Delay for Non-inverting Outputs
TEST CIRCUIT AND WAVEFORMS
t
w
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
NEGATIVE
PULSE
POSITIVE
PULSE
t
w
AMP (V)
0.3V
0.3V
t
THL (
t
f
f
)
INPUT PULSE REQUIREMENTS
Rep.Rate
t
w
t
TLH
2.0ns
t
THL
2.0ns
1MHz
500ns
Input Pulse Definition
V
CC
Family
74ALS
D.U.T.
PULSE
GENERATOR
R
L
C
L
R
T
V
IN
V
OUT
Test Circuit for Totem-pole Outputs
DEFINITIONS:
R
L
=
Load resistor;
see AC electrical characteristics for value.
Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
Termination resistance should be equal to Z
OUT
of
pulse generators.
C
L
=
R
T
=
t
THL (
t
f
)
t
TLH (
t
r
)
t
TLH (
t
r
)
AMP (V)
Amplitude
3.5V
1.3V
V
M
SC00005
相关PDF资料 |
PDF描述 |
|---|---|
| 74ALS138 | 1-of-8 decoder/demultiplexer(8选1译码器/多路分解器) |
| 74ALS138N | 1-of-8 decoder/demultiplexer |
| 74ALS139D | Dual 1-of-4 decoder/demultiplexer |
| 74ALS139 | Dual 1-of-4 decoder/demultiplexer(两通道4选1译码器/多路分解器) |
| 74ALS139N | Dual 1-of-4 decoder/demultiplexer |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 74ALS138N | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:1-of-8 decoder/demultiplexer |
| 74ALS138NSC93 | 制造商:TI 功能描述:74ALS138 |
| 74ALS139 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Dual 1-of-4 decoder/demultiplexer |
| 74ALS139D | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Dual 1-of-4 decoder/demultiplexer |
| 74ALS139N | 制造商:NXP Semiconductors 功能描述: 制造商:NXP Semiconductors 功能描述:ALS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 |
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