LTC1687 LINER [Linear Technology], LTC1687 Datasheet - Page 3

• Manufacturer Part Number: LTC1687
• Description: 52Mbps Precision Delay RS485 Fail-Safe Transceivers
• Manufacturer: LINER [Linear Technology]

DC ELECTRICAL CHARACTERISTICS
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
SYMBOL
V
I
I
C
I
I
I
I
R
C
Fail-Safe
Time
CMRR
SWITCHING CHARACTERISTICS
PLH
SKEW
r
ZH
ZL
LZ
PLH
SQD
ZL
ZH
LZ
PKG-PKG
OZR
OZD
DD
OSD1
OSD2
OSR
HZ
HZ
, t
OL
LOAD
IN
IN
f
, t
, t
PHL
PHL
PARAMETER
Driver Input-to-Output Propagation Delay
Driver Output A-to-Output B Skew
Driver Rise/Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable from Low
Driver Disable from High
Receiver Input-to-Output Propagation Delay C
Receiver Skew t
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
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
Driver Short-Circuit Current, V
Receiver Short-Circuit Current
Input Resistance
Input Capacitance
Open-Circuit Input Voltage
Time to Detect Fail-Safe Condition
Receiver Input Common Mode
Rejection Ratio
U
PLH
– t
PHL
OUT
OUT
= HIGH
= LOW
CONDITIONS
R
Figures 3, 5
R
Figures 3, 5
R
Figures 3, 5
C
C
C
C
C
C
C
C
C
(Note 4)
C
V
V
V
CONDITIONS
I
0.4V V
V
No Load, Pins D, DE, RE = 0V or V
V
V
V
– 7V V
A, B, D, DE, RE Inputs (Note 4)
V
V
L
L
L
L
L
L
L
L
L
L
L
DD
DD
DD
DIFF
DIFF
DIFF
OUT
OUT
OUT
OUT
OUT
DD
CM
= 100pF, S2 Closed, Figures 4, 6
= 100pF, S1 Closed, Figures 4, 6
= 15pF, S1 Closed, Figures 4, 6
= 15pF, S2 Closed, Figures 4, 6
= 15pF, Figures 3, 7
= 15pF, Figures 3, 7
= 15pF, S1 Closed, Figures 2, 8
= 15pF, S2 Closed, Figures 2, 8
= 15pF, S1 Closed, Figures 2, 8
= 15pF, S2 Closed, Figures 2, 8
= 15pF, Same Temperature (Note 4)
= 5V 5% (Note 4)
= 5V 5% (Note 4)
= 5V 5% (Note 4)
= 54 , C
= 54 , C
= 54 , C
= 5V (Note 4), Figure 5
= 4mA, V
= 2.5V, f = 26MHz
= – 7V or 10V (Note 5)
= – 7V or 10V (Note 5)
= 0V or V
= – 7V to 12V
V
CM
OUT
DD
= 5V, unless otherwise noted (Notes 2, 3).
12V
L1
L1
L1
ID
V
2.4V
DD
= C
= C
= C
DD
= – 300mV
(Note 5)
L2
L2
L2
= 5V 5% unless otherwise noted (Notes 2, 3).
= 100pF,
= 100pF,
= 100pF,
DD
– 200
MIN
MIN
3.2
– 1
15
15
52
26
22
LTC1686/LTC1687
18.5
18.5
TYP
TYP
500
500
3.5
1.5
3.3
25
25
25
25
25
25
25
25
17
60
30
45
7
3
2
MAX
2000
MAX
19.2
200
500
0.4
3.4
22
50
50
50
50
22
50
50
50
50
12
20
20
20
1
UNITS
UNITS
Mbps
3
MHz
mA
mA
mA
mA
k
dB
pF
pF
ps
ns
ns
ns
ns
ns
ns
ns
ns
ps
ns
ns
ns
ns
ns
ns
V
A
A
V
s