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LTC1480IS8 数据表(PDF) 3 Page - Linear Technology

部件名 LTC1480IS8
功能描述  3.3V Ultra-Low Power RS485 Transceiver
PDF  8 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1480IS8 数据表(HTML) 3 Page - Linear Technology

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3
LTC1480
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tPLH
Driver Input to Output
RDIFF = 54Ω, CL1 = CL2 = 100pF,
q
25
50
80
ns
(Figures 3 and 5)
tPHL
Driver Input to Output
q
25
50
80
tSKEW
Driver Output to Output
q
10
20
tR, tF
Driver Rise or Fall Time
q
515
40
tZH
Driver Enable to Output HIGH
CL = 100pF (Figures 4, 6), S2 Closed
q
70
120
ns
tZL
Driver Enable to Output LOW
CL = 100pF (Figures 4, 6), S1 Closed
q
70
120
ns
tLZ
Driver Disable Time from LOW
CL = 15pF (Figures 4, 6), S1 Closed
q
70
120
ns
tHZ
Driver Disable Time from HIGH
CL = 15pF (Figures 4, 6), S2 Closed
q
70
120
ns
tPLH
Receiver Input to Output
RDIFF = 54Ω, CL1 = CL2 = 100pF,
q
30
140
200
ns
(Figure 3, 7)
tPHL
Receiver Input to Output
q
30
140
200
ns
tSKD
tPLH – tPHLDifferential Receiver Skew
13
ns
tZL
Receiver Enable to Output LOW
CRL = 15pF (Figures 2, 8), S1 Closed
q
50
80
ns
tZH
Receiver Enable to Output HIGH
CRL = 15pF (Figures 2, 8), S2 Closed
q
50
80
ns
tLZ
Receiver Disable from LOW
CRL = 15pF (Figures 2, 8), S1 Closed
q
50
80
ns
tHZ
Receiver Disable from HIGH
CRL = 15pF (Figures 2, 8), S2 Closed
q
50
80
ns
fMAX
Maximum Data Rate
q
2.5
Mbits/s
tSHDN
Time to Shutdown
DE = 0, RE =
q
50
200
600
ns
tZH(SHDN)
Driver Enable from Shutdown to Output HIGH
CL = 100pF (Figures 4, 6), S2 Closed
q
70
120
ns
tZL(SHDN)
Driver Enable from Shutdown to Output LOW
CL = 100pF (Figures 4, 6), S1 Closed
q
70
120
ns
tZH(SHDN)
Receiver Enable from Shutdown to Output HIGH
CL = 15pF (Figures 2, 8), S2 Closed
q
4500
ns
tZL(SHDN)
Receiver Enable from Shutdown to Output LOW
CL = 15pF (Figures 2, 8), S1 Closed
q
4500
ns
SWITCHI G CHARACTERISTICS
The q 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 VCC = 3.3V and TA = 25°C.
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 3.3V (Notes 2, 3)
OUTPUT VOLTAGE (V)
0
50
100
150
1.5
2.5
LT1480 • TPC02
0
–50
0.5
1.0
2.0
3.0
3.5
–100
–150
VCC = 3.3V
TA = 25°C
Driver Output Low/High Voltage
vs Output Current
Supply Current vs Temperature
TEMPERATURE (
°C)
–25
200
225
275
300
325
75
425
LT1480 • TPC01
250
25
175
125
–50
50
0
150
100
350
375
400
DRIVER DISABLED
THERMAL SHUTDOWN
WITH DRIVER ENABLED
VCC = 3.3V
Driver Differential Output Voltage
vs Temperature
TEMPERATURE (
°C)
–40
1.9
2.0
2.2
20
60
LTC1480 • TPC03
1.8
1.7
–20
0
40
80
100
1.6
1.5
2.1
RL = 100Ω
RL = 54Ω
VCC = 3.3V



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