參數(shù)資料
型號(hào)： LTC485MJ8
廠商： LINEAR TECHNOLOGY CORP
元件分類： 通用總線功能
英文描述： Low Power RS485 Interface Transceiver
中文描述： LINE TRANSCEIVER, PDIP8
封裝： 0.300 INCH, HERMETIC, CERAMIC, DIP-8
文件頁數(shù)： 3/12頁
文件大?。?/td> 327K
代理商： LTC485MJ8
3
LTC485
SYMBOL
t
PLH
t
PHL
t
SKEW
t
r
, t
f
t
ZH
t
ZL
t
LZ
t
HZ
t
PLH
t
PHL
t
SKD
t
ZL
t
ZH
t
LZ
t
HZ
PARAMETER
Driver Input to Output
Driver Input to Output
Driver Output to Output
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
Receiver Input to Output
CONDITIONS
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 3 and 5)
MIN
10
10
TYP
30
30
5
15
40
40
40
40
90
90
13
20
20
20
20
MAX
50
50
10
25
70
70
70
70
200
200
UNITS
G
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
G
G
G
3
C
L
= 100pF (Figures 4 and 6) S2 Closed
C
L
= 100pF (Figures 4 and 6) S1 Closed
C
L
= 15pF (Figures 4 and 6) S1 Closed
C
L
= 15pF (Figures 4 and 6) S2 Closed
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 3 and 7)
G
G
G
G
G
30
30
G
t
PLH
– t
PHL
Differential Receiver Skew
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
G
C
RL
= 15pF (Figures 2 and 8) S1 Closed
C
RL
= 15pF (Figures 2 and 8) S2 Closed
C
RL
= 15pF (Figures 2 and 8) S1 Closed
C
RL
= 15pF (Figures 2 and 8) S2 Closed
G
50
50
50
50
G
G
G
SWITCHU
V
CC
= 5V
±
5%, unless otherwise noted. (Notes 2 and 3)
3V
DE
A
B
DI
R
DIFF
C
L1
C
L2
RO
15pF
A
B
RE
LTC485 F03
OUTPUT
UNDER TEST
C
L
S1
S2
V
CC
500
LTC485 F02
Figure 3. Driver/Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load #2
RECEIVER
OUTPUT
C
15pF
1k
S1
S2
TEST POINT
V
CC
1k
LTC485 F02
V
OD
A
B
R
R
V
OC
LTC485 F01
Figure 1. Driver DC Test Load
Figure 2. Receiver Timing Test Load
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
Absolute maximum ratings are those beyond which the safety of
the device cannot be guaranteed.
Note 2:
All currents into device pins are positive; all currents out ot device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
Note 3:
All typicals are given for V
CC
= 5V and T
A
= 25
°
C.
Note 4:
The LTC485 is guaranteed by design to be functional over a supply
voltage range of 5V
±
10%. Data sheet parameters are guaranteed over the
tested supply voltage range of 5V
±
5%.
TEST CIRCUITS
相關(guān)PDF資料
PDF描述
LTC486CSW Quad Low Power RS485 Driver
LTC486ISW Quad Low Power RS485 Driver
LTC487CSW Quad Low Power RS485 Driver
LTC487ISW Quad Low Power RS485 Driver
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相關(guān)代理商/技術(shù)參數(shù)
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