參數(shù)資料
型號： LTC1687
廠商： Linear Technology Corporation
英文描述： 52Mbps Precision Delay RS485 Fail-Safe Transceivers
中文描述： 52Mbps的精密延遲485故障安全收發(fā)器
文件頁數(shù)： 3/12頁
文件大?。?/td> 285K
代理商： LTC1687
3
LTC1686/LTC1687
DC ELECTRICAL CHARACTERISTICS
V
DD
= 5V
±
5% unless otherwise noted (Notes 2, 3).
SYMBOL
V
OL
I
OZR
PARAMETER
Receiver Output Low Voltage
Three-State (High Impedance) Output
Current at Receiver
Three-State (High Impedance) Output
Current at Driver
Receiver and Driver Output Load Capacitance (Note 4)
Supply Current
Driver Short-Circuit Current, V
OUT
= HIGH
Driver Short-Circuit Current, V
OUT
= LOW
Receiver Short-Circuit Current
Input Resistance
Input Capacitance
Open-Circuit Input Voltage
Time to Detect Fail-Safe Condition
CONDITIONS
I
OUT
= 4mA, V
ID
= –300mV
0.4V
≤
V
OUT
≤
2.4V
MIN
TYP
MAX
0.4
1
UNITS
G
V
G
–1
μ
A
I
OZD
V
OUT
= –7V to 12V
G
–200
200
μ
A
C
LOAD
I
DD
I
OSD1
I
OSD2
I
OSR
R
IN
C
IN
G
500
12
20
20
20
pF
mA
mA
mA
mA
k
pF
No Load, Pins D, DE, RE = 0V or V
DD
V
OUT
= –7V or 10V (Note 5)
V
OUT
= –7V or 10V (Note 5)
V
OUT
= 0V or V
DD
(Note 5)
–7V
≤
V
CM
≤
12V
A, B, D, DE, RE Inputs (Note 4)
V
DD
= 5V (Note 4), Figure 5
G
7
G
G
G
G
22
3
G
3.2
3.3
2
3.4
V
Fail-Safe
Time
CMRR
μ
s
Receiver Input Common Mode
Rejection Ratio
V
CM
= 2.5V, f = 26MHz
45
dB
SYMBOL
t
PLH
, t
PHL
PARAMETER
Driver Input-to-Output Propagation Delay
CONDITIONS
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
Figures 3, 5
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
Figures 3, 5
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
Figures 3, 5
C
L
= 100pF, S2 Closed, Figures 4, 6
C
L
= 100pF, S1 Closed, Figures 4, 6
C
L
= 15pF, S1 Closed, Figures 4, 6
C
L
= 15pF, S2 Closed, Figures 4, 6
C
L
= 15pF, Figures 3, 7
C
L
= 15pF, Figures 3, 7
C
L
= 15pF, S1 Closed, Figures 2, 8
C
L
= 15pF, S2 Closed, Figures 2, 8
C
L
= 15pF, S1 Closed, Figures 2, 8
C
L
= 15pF, S2 Closed, Figures 2, 8
(Note 4)
MIN
15
TYP
18.5
MAX
22
UNITS
G
ns
t
SKEW
Driver Output A-to-Output B Skew
500
ps
t
r
, t
f
Driver Rise/Fall Time
3.5
ns
t
ZH
t
ZL
t
LZ
t
HZ
t
PLH
, t
PHL
t
SQD
t
ZL
t
ZH
t
LZ
t
HZ
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable from Low
Driver Disable from High
Receiver Input-to-Output Propagation Delay
Receiver Skew
t
PLH
– t
PHL
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
Maximum Receiver Input
Rise/Fall Times
Package-to-Package Skew
Minimum Input Pulse Width
Maximum Data Rate
Maximum Input Frequency
G
25
25
25
25
18.5
500
25
25
25
25
50
50
50
50
22
ns
ns
ns
ns
ns
ps
ns
ns
ns
ns
ns
G
G
G
G
15
G
50
50
50
50
2000
G
G
G
G
t
PKG-PKG
C
L
= 15pF, Same Temperature (Note 4)
V
DD
= 5V
±
5% (Note 4)
V
DD
= 5V
±
5% (Note 4)
V
DD
= 5V
±
5% (Note 4)
1.5
17
60
30
ns
ns
G
19.2
G
52
26
Mbps
MHz
G
SWITCHI
G CHARACTERISTICS
U
V
DD
= 5V, unless otherwise noted (Notes 2, 3).
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LTC1687CS#TRPBF 功能描述:IC TXRX RS485 PREC DELAY 14-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:27 系列:- 類型:收發(fā)器 驅動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件
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