參數(shù)資料
型號(hào): ADM3488E
廠商: Analog Devices, Inc.
英文描述: 3.3 V, 【15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers
中文描述: 3.3伏特,【15千伏ESD保護(hù),半和全雙工,RS-485/RS-422收發(fā)器
文件頁(yè)數(shù): 10/20頁(yè)
文件大?。?/td> 503K
代理商: ADM3488E
ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E
Rev. A | Page 10 of 20
V
OL
V
CC
0V
3V
0.25V
IN
OUT
1.5V
1.5V
t
PSL
t
PLZ
V
OM
D
OUT
C
L
= 50pF
2
GENERATOR
1
50
S1
0V OR 3V
V
CC
R
L
= 110
1
PPR = 250kHz, 50% DUTY CYCLE,
t
6.0ns, Z
= 50
.
2
C
L
INCLUDES PROBE AND STRAY CAPACITANCE.
0
Figure 13. Driver Enable and Disable Times (t
PZL
, t
PSL
, t
PLZ
)
3V
0V
V
CC
0V
IN
OUT
V
OM
V
OM
1.5V
1.5V
t
RPHL
t
RPLH
GENERATOR
1
50
C
L
= 15pF
2
R
1.5V
0V
V
OM
=
V
CC
2
OUT
V
ID
1
PPR = 250kHz, 50% DUTY CYCLE,
t
6.0ns, Z
= 50
.
2
C
L
INCLUDES PROBE AND STRAY CAPACITANCE.
0
Figure 14. Receiver Propagation Delays
+3V
0V
V
OH
0V
S1 OPEN
S2 CLOSED
S3 = +1.5V
S1 CLOSED
S2 OPEN
S3 = –1.5V
S1 OPEN
S2 CLOSED
S3 = +1.5V
S1 CLOSED
S2 OPEN
S3 = –1.5V
+3V
0V
V
CC
V
OL
+3V
0V
V
CC
V
OL
+3V
0V
V
OH
0V
+1.5V
+1.5V
+1.5V
IN
OUT
IN
OUT
IN
OUT
IN
OUT
t
RPZL
t
RPSL
t
RPLZ
t
RPHZ
+0.25V
+0.25V
+1.5V
+1.5V
+1.5V
t
RPZH
t
RPSH
R
GENERATOR
1
50
C
L2
S3
S1
S2
V
CC
+1.5V
–1.5V
V
ID
1k
1
PPR = 250kHz, 50% DUTY CYCLE,
t
6.0ns, Z
= 50
.
2
C
L
INCLUDES PROBE AND STRAY CAPACITANCE.
0
Figure 15. Receiver Enable and Disable Times
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