LTC1518 Linear Technology, LTC1518 Datasheet - Page 3

• Manufacturer Part Number: LTC1518
• Description: 52Mbps Precision Delay RS485 Quad Line Receivers
• Manufacturer: Linear Technology

DC ELECTRICAL CHARACTERISTICS
SWITCHI G TI E CHARACTERISTICS
V
V
SYMBOL
t
t
t
t
t
t
t
t
t
t
f
C
SYMBOL
CMRR
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.
Note 3: All typicals are given for V
Note 4: Guaranteed by design, but not tested.
PLH
r
SKD
ZL
ZH
LZ
HZ
CH-CH
PKG-PKG
r
IN(MAX)
, t
, t
L
DD
DD
f
f
, t
Input Maximum Input Rise or Fall Time
= 5V 5% (Notes 2, 3) per receiver, unless otherwise noted.
= 5V 5% (Notes 2, 3) V
PHL
denotes specifications which apply over the full operating
PARAMETER
Input-to-Output Propagation Delay
Rise/Fall Times
Enable to Output Low
Enable to Output High
Disable from Output Low
Disable from Output High
Channel-to-Channel Skew
Package-to-Package Skew
Minimum Input Pulse Width
Maximum Input Frequency
Maximum Data Rate
Load Capacitance
PARAMETER
Max V
Min Time to Detect Fault Condition
Common Mode Rejection Ratio
t
PLH
U
– t
ID
PHL
for Fail-Safe Detection
Skew
W
ID
DD
= 1.5V, V
= 5V, T
A
= 25 C.
CM
= 2.5V, unless otherwise noted.
CONDITIONS
–7V V
V
CONDITIONS
C
C
C
C
C
C
C
C
C
(Figure 4, Note 4)
(Note 4)
(Note 4)
Square Wave (Note 4)
(Note 4)
(Note 4)
L
L
L
L
L
L
L
L
L
CM
= 15pF (Figure 1)
= 15pF
= 15pF, Same Receiver (Note 5)
= 15pF (Figure 2)
= 15pF (Figure 2)
= 15pF (Figure 2)
= 15pF (Figure 2)
= 15pF (Figure 3, Note 6)
= 15pF, Same Temperature
= 2.5V, f = 26MHz (Note 4)
CM
12V
Note 5: Worst-case t
over the full operating temperature range.
Note 6: Maximum difference between any two t
single package over the full operating temperature range.
Note 7: Short-circuit current does not represent output drive capability.
When the output detects a short-circuit condition, output drive current is
significantly reduced until the short is removed.
PLH
– t
PHL
MIN
MIN
15
26
52
LTC1518/LTC1519
skew for a single receiver in a package
18.5
TYP
TYP
500
500
2.5
1.5
25
45
10
10
20
20
12
40
80
2
PLH
or t
MAX
2000
MAX
19.2
PHL
500
22
35
35
35
35
transitions in a
UNITS
UNITS
Mbps
3
MHz
mV
dB
ns
ns
ps
ns
ns
ns
ns
ps
ns
ns
ns
pF
s