参数资料
型号: 74ALS139N
厂商: NXP SEMICONDUCTORS
元件分类: 通用总线功能
英文描述: Dual 1-of-4 decoder/demultiplexer
中文描述: ALS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16
封装: PLASTIC, DIP-16
文件页数: 5/8页
文件大小: 97K
代理商: 74ALS139N
Philips Semiconductors
Product specification
74ALS139
Dual 1-of-4 decoder/demultiplexer
1991 Feb 08
5
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
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