LTC1687 LINER [Linear Technology], LTC1687 Datasheet - Page 4

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

LTC1686/LTC1687
ELECTRICAL CHARACTERISTICS
The
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.
TYPICAL PERFORMANCE CHARACTERISTICS
4
44.5
44.0
43.0
46.5
46.0
45.5
45.0
43.5
42.0
42.5
30
25
20
15
10
5
0
denotes specifications which apply over the full operating
10
5
Receiver Input CMRR
Receiver Propagation Delay
vs Load Capacitance
T
T
A
A
= 25 C
= 25 C
15
LOAD CAPACITANCE (pF)
1k
FREQUENCY (Hz)
25
35
100k
55
W
105
1686/87 G01
1M
1686/87 G04
U
205
70
60
50
40
30
10
25
20
15
10
20
0
0
5
– 7
1
Supply Current vs Data Rate
Receiver Propagation Delay
vs Common Mode
BOTH DRIVER AND RECEIVER
ENABLED AND LOADED
T
T
A
A
– 4
= 25 C
= 25 C
RECEIVER COMMON MODE (V)
10
– 2
DATA RATE (Mbps)
0
20
2
Note 3: All typicals are given for V
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.
4
30
6
8
40
1686/87 G02
1686/87 G05
10
12
50
25
20
15
10
58
57
56
55
54
53
52
50
51
5
0
– 25
0.3
Supply Current vs Temperature
Receiver Propagation Delay
vs Input Overdrive
DD
T
BOTH DRIVER AND RECEIVER
ENABLED AND LOADED
25Mbps DATA RATE
A
= 5V, T
= 25 C
0.5
RECEIVER INPUT OVERDRIVE (V)
0
0.7
A
TEMPERATURE ( C)
= 25 C.
25
1.0
1.25
50
1.5
75
2.0
1686/87 G06
1686/87 G03
2.5
100