參數(shù)資料
型號: 74F243
廠商: NXP Semiconductors N.V.
英文描述: Quad transceiver (3-State)(四收發(fā)器(三態(tài)))
中文描述: 四收發(fā)器(3態(tài))(四收發(fā)器(三態(tài)))
文件頁數(shù): 6/10頁
文件大?。?/td> 84K
代理商: 74F243
Philips Semiconductors
Product specification
74F242/74F243
Transceivers
1990 Aug 30
6
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST
CONDITION
V
CC
= +5V
T
= +25
°
C
C
L
= 50pF, R
L
= 500
V
CC
= +5V
±
10%
T
amb
= 0
°
C to +70
°
C
C
L
L
= 500
UNIT
MIN
TYP
MAX
MIN
MAX
t
PLH
t
PHL
Propagation delay
An, Bn to Bn, An
Waveform
NO TAG
2.5
2.0
3.5
3.0
6.0
4.5
2.5
2.0
7.0
4.5
ns
t
PZH
t
PZL
Output Enable time
to High or Low level
74F242
Waveform 3
Waveform 4
3.0
3.5
4.0
6.5
7.0
9.0
3.0
3.5
8.0
10.5
ns
t
PHZ
t
PLZ
Output Disable time
from High or Low level
Waveform 3
Waveform 4
3.5
3.5
5.5
6.0
8.5
9.5
3.5
3.5
9.0
11.0
ns
t
PLH
t
PHL
Propagation delay
An, Bn to Bn, An
Waveform 2
2.5
2.5
4.0
4.0
5.2
5.2
2.0
2.0
6.2
6.5
ns
t
PZH
t
PZL
Output Enable time
to High or Low level
74F243
Waveform 3
Waveform 4
2.0
2.0
4.5
5.0
5.7
7.5
2.0
2.0
6.7
8.5
ns
t
PHZ
t
PLZ
Output Disable time
from High or Low level
Waveform 3
Waveform 4
2.0
2.0
4.0
4.5
6.0
6.0
2.0
2.0
7.0
7.0
ns
AC WAVEFORMS
For all waveforms, V
M
= 1.5V.
A
n
, B
n
B
n,
A
n
t
PHL
V
M
V
M
V
M
V
M
t
PLH
SF00773
Waveform 1.
For Inverting Outputs
V
M
V
M
V
M
V
M
Bn, An
An, Bn
t
PLH
t
PHL
SF00202
Waveform 2.
For Non-Inverting Outputs
V
M
V
M
V
M
t
PLZ
t
PZH
V
OH
–0.3V
OE
A
OE
B
An, Bn
SF00775
0V
Waveform 3.
3-State Output Enable Time to High Level and
Output Disable Time from High Level
V
M
V
M
V
M
t
PLZ
t
PZL
V
OL
+0.3V
OE
A
OE
B
An, Bn
SF00776
Waveform 4.
3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
相關PDF資料
PDF描述
74F242 Quad transceiver, inverting (3-State)(四收發(fā)器,反向(三態(tài)))
74F244 Octal buffers 3-State
74F244B Octal buffers 3-State
74F244MSA Octal Buffers/Line Drivers with TRI-STATE Outputs
74F244PC Octal Buffers/Line Drivers with TRI-STATE Outputs
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