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参数资料
型号： LTC1485IS8#TRPBF
厂商： Linear Technology
文件页数： 6/12页
文件大小： 0K
描述： IC TXRX DIFFERNTIAL BUS 8-SOIC
标准包装： 2,500
类型： 收发器
驱动器/接收器数： 1/1
规程： RS422，RS485
电源电压： 4.75 V ~ 5.25 V
安装类型： 表面贴装
封装/外壳： 8-SOIC（0.154"，3.90mm 宽）
供应商设备封装： 8-SOIC
包装： 带卷 (TR)
3
LTC1485
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tPLH
Driver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
10
30
50
ns
(Figures 2, 5)
tPHL
Driver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
10
30
50
ns
(Figures 2, 5)
tSKEW
Driver Output to Output
RDIFF = 54, CL1 = CL2 = 100pF
q
410
ns
(Figures 2, 5)
tr, tf
Driver Rise or Fall Time
RDIFF = 54, CL1 = CL2 = 100pF
q
515
25
ns
(Figures 2, 5)
tZH
Driver Enable to Output High
CL = 100pF (Figures 4, 6) S2 Closed
q
40
70
ns
tZL
Driver Enable to Output Low
CL = 100pF (Figures 4, 6) S1 Closed
q
40
70
ns
tLZ
Driver Disable Time from Low
CL = 15pF (Figures 4, 6) S1 Closed
q
40
70
ns
tHZ
Driver Disable Time from High
CL = 15pF (Figures 4, 6) S2 Closed
q
40
70
ns
tPLH
Receiver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF (Figures 2, 7)
q
15
25
50
ns
tPHL
Receiver Input to Output
RDIFF = 54, CL1 = CL2 = 100pF (Figures 2, 7)
q
20
30
55
ns
tSKEW
| tPLH – tPHL |RDIFF = 54, CL1 = CL2 = 100pF (Figures 2, 7)
q
515
ns
Differential Receiver Skew
tZL
Receiver Enable to Output Low
CL = 15pF (Figures 3, 8) S1 Closed
q
30
45
ns
tZH
Receiver Enable to Output High
CL = 15pF (Figures 3, 8) S2 Closed
q
30
45
ns
tLZ
Receiver Disable from Low
CL = 15pF (Figures 3, 8) S1 Closed
q
30
45
ns
tHZ
Receiver Disable from High
CL = 15pF (Figures 3, 8) S2 Closed
q
30
45
ns
S
U
GC
C
HARA TERISTICS
WITCHI
VCC = 5V (Notes 2, 3), unless otherwise noted.
The q denotes specifications which apply over the operating temperature
range.
Note 1: Absolute Maximum Ratings are those values beyond which the
safety of the device cannot be guaranteed.
Note 2: 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 3: All typicals are given for VCC = 5V and TA = 25°C.
CC
HARA TERISTICS
UW
A
TYPICALPERFOR
CE
Receiver Output High Voltage vs
Temperature
Receiver Output Low Voltage vs
Output Current
Receiver Output High Voltage vs
Output Current
OUTPUT VOLTAGE (V)
0
OUTPUT
CURRENT
(mA)
16
1.0
1485 G01
8
0.5
1.5
24
32
2.0
4
12
20
28
36
TA = 25°C
OUTPUT VOLTAGE (V)
5
0
OUTPUT
CURRENT
(mA)
–8
1485 G02
–4
43
–12
–16
2
–2
–6
–10
–14
–18
TA = 25°C
TEMPERATURE (
°C)
–50
3.0
OUTPUT
VOLTAGE
(V)
3.8
50
1485 G03
3.4
–25
125
4.2
4.6
0
25
75
100
4.8
4.4
4.0
3.6
3.2
I = 8mA
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