The q denotes specifications which apply over the full operating
參數(shù)資料
型號: LTC1687IS
廠商: Linear Technology
文件頁數(shù): 7/12頁
文件大?。?/td> 0K
描述: IC TXRX RS485 PREC DELAY 14-SOIC
標準包裝: 55
類型: 收發(fā)器
驅動器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 14-SOIC
包裝: 管件
4
LTC1686/LTC1687
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into the device pins are positive; all currents out of the
device pins are negative.
Note 3: All typicals are given for VDD = 5V, TA = 25°C.
Note 4: Guaranteed by design, but not tested.
Note 5: Short-circuit current does not represent output drive capability.
When the output detects a short-circuit condition, output drive current is
significantly reduced (from hundreds of mA to 20mA max) until the short
is removed.
TYPICAL PERFORMANCE CHARACTERISTICS
UW
FREQUENCY (Hz)
10
42.0
COMMON
MODE
REJECTION
RATIO
(dB)
42.5
43.5
44.0
44.5
46.5
1686/87 G01
43.0
1k
100k
1M
45.0
45.5
46.0
TA = 25°C
Receiver Input CMRR
TEMPERATURE (
°C)
–25
SUPPLY
CURRENT
(mA)
53
54
55
50
100
1686/87 G03
52
51
50
025
75
56
57
58
BOTH DRIVER AND RECEIVER
ENABLED AND LOADED
25Mbps DATA RATE
DATA RATE (Mbps)
1
50
60
70
40
30
1686/87 G02
40
30
10
20
50
20
10
0
SUPPLY
CURRENT
(mA)
BOTH DRIVER AND RECEIVER
ENABLED AND LOADED
TA = 25°C
Supply Current vs Data Rate
Supply Current vs Temperature
Receiver Propagation Delay
vs Load Capacitance
Receiver Propagation Delay
vs Common Mode
LOAD CAPACITANCE (pF)
5
0
PROPAGATION
DELAY
(ns)
5
10
15
20
30
15
25
35
55
1686/87 G04
105
205
25
TA = 25°C
RECEIVER COMMON MODE (V)
–7
0
PROPAGATION
DELAY
(ns)
5
15
20
25
–2
2
412
1686/87 G05
10
–4
0
6
8
10
TA = 25°C
Receiver Propagation Delay
vs Input Overdrive
RECEIVER INPUT OVERDRIVE (V)
0.3
0.5
0
RECEIVER
PROPAGATION
DELAY
(ns)
10
25
0.7
1.25
1.5
1686/87 G06
5
20
15
1.0
2.0
2.5
TA = 25°C
Minimum Input Pulse Width
VDD = 5V ±5% (Note 4)
LTC1686C/LTC1687C q
17
19.2
ns
LTC1686I/LTC1687I
q
20
25
ns
Maximum Data Rate
VDD = 5V ±5% (Note 4)
LTC1686C/LTC1687C q
52
60
Mbps
LTC1686I/LTC1687I
q
40
50
Mbps
Maximum Input Frequency
VDD = 5V ±5% (Note 4)
LTC1686C/LTC1687C q
26
30
MHz
LTC1686I/LTC1687I
q
20
25
MHz
SWITCHING CHARACTERISTICS
U
VDD = 5V, unless otherwise noted (Notes 2, 3).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
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