參數(shù)資料
型號(hào)： LTC1484
廠商： Linear Technology Corporation
英文描述： Low Power RS485 Transceiver with Receiver Fail-Safe(低功耗RS485收發(fā)器（帶失效保險(xiǎn)）)
中文描述： 485低功耗收發(fā)器與接收器故障保險(xiǎn)（低功耗485收發(fā)器（帶失效保險(xiǎn)））
文件頁數(shù)： 4/16頁
文件大小： 224K
代理商： LTC1484
4
LTC1484
SYMBOL
t
ZH(SHDN)
PARAMETER
Driver Enable from Shutdown to Output High
CONDITIONS
C
L
= 100pF (Figures 5, 7) S2 Closed,
DI = DE
C
L
= 100pF (Figures 5, 7) S1 Closed,
DI = 0
C
L
= 15pF (Figures 3, 9) S2 Closed,
DE = 0
C
L
= 15pF (Figures 3, 9) S1 Closed,
DE = 0
MIN
TYP
40
MAX
100
UNITS
G
ns
t
ZL(SHDN)
Driver Enable from Shutdown to Output Low
G
40
100
ns
t
ZH(SHDN)
Receiver Enable from Shutdown to Output High
G
10
μ
s
t
ZL(SHDN)
Receiver Enable from Shutdown to Output Low
G
10
μ
s
Note 1:
Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2:
All typicals are given for V
CC
= 5V and T
A
= 25
°
C.
Note 3:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
Note 4:
For higher ambient temperatures, the part may enter thermal
shutdown during short-circuit conditions.
Note 5:
Guaranteed by design.
Note 6:
Time for I
CC
to drop to I
CC
/2 when the receiver is disabled.
SWITCHI
G CHARACTERISTICS
U
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 5V
±
5% (Notes 2 and 3) unless otherwise noted.
The
G
denotes the specifications which apply over the full operating
TYPICAL PERFOR AU
INPUT VOLTAGE (V)
–0.2
–0.16
–0.12
–0.08
–0.04
0
R
1484 G01
6
5
4
3
2
1
0
T
A
= 25
°
C
V
CC
= 5V
V
TH(HIGH)
V
TH(LOW)
TEMPERATURE (
°
C)
–55 –35 –15
5
25
45
65
85 105 125
R
1484 G02
0
–0.05
–0.10
–0.15
–0.20
–0.25
V
CC
= 5V
V
TH(HIGH)
V
CM
= –7V
V
CM
= 12V
V
CM
= 0V
TEMPERATURE (
°
C)
–55 –35 –15
5
25
45
65
85 105 125
R
1484 G03
0
–0.05
–0.10
–0.15
–0.20
–0.25
V
CC
= 5V
V
TH(LOW)
V
CM
= –7V
V
CM
= 12V
V
CM
= 0V
Receiver Output Voltage vs Input
Voltage
Receiver Input Threshold Voltage
(Output High) vs Temperature
Receiver Input Threshold Voltage
(Output Low) vs Temperature
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