LTC1518 Datasheet, PDF (3/12 Pages) Linear Technology – 52Mbps Precision Delay RS485 Quad Line Receivers

DC ELECTRICAL CHARACTERISTICS
V_DD = 5V ±5% (Notes 2, 3) per receiver, unless otherwise noted.
SYMBOL
CMRR
PARAMETER
Max V_ID for Fail-Safe Detection
Min Time to Detect Fault Condition
Common Mode Rejection Ratio
CONDITIONS
–7V ≤ V_CM ≤ 12V
V_CM = 2.5V, f = 26MHz (Note 4)
LTC1518/LTC1519
MIN
TYP
MAX
UNITS
25
mV
2
µs
45
dB
UW
SWITCHI G TI E CHARACTERISTICS
V_DD = 5V ±5% (Notes 2, 3) V_ID = 1.5V, V_CM = 2.5V, unless otherwise noted.
SYMBOL
t_PLH, t_PHL
t_r, t_f
t_SKD
t_ZL
t_ZH
t_LZ
t_HZ
t_CH-CH
t_PKG-PKG
PARAMETER
Input-to-Output Propagation Delay
Rise/Fall Times
t_PLH – t_PHL Skew
Enable to Output Low
Enable to Output High
Disable from Output Low
Disable from Output High
Channel-to-Channel Skew
Package-to-Package Skew
t_r, t_f Input Maximum Input Rise or Fall Time
Minimum Input Pulse Width
f_IN(MAX)
Maximum Input Frequency
Maximum Data Rate
C_L
Load Capacitance
CONDITIONS
MIN
TYP
MAX
C_L = 15pF (Figure 1)
q
15
18.5
22
C_L = 15pF
2.5
C_L = 15pF, Same Receiver (Note 5)
500
C_L = 15pF (Figure 2)
q
10
35
C_L = 15pF (Figure 2)
q
10
35
C_L = 15pF (Figure 2)
q
20
35
C_L = 15pF (Figure 2)
q
20
35
C_L = 15pF (Figure 3, Note 6)
500
C_L = 15pF, Same Temperature
1.5
(Figure 4, Note 4)
(Note 4)
q
2000
(Note 4)
q
12
19.2
Square Wave (Note 4)
q
26
40
(Note 4)
q
52
80
(Note 4)
500
UNITS
ns
ns
ps
ns
ns
ns
ns
ps
ns
ns
ns
MHz
Mbps
pF
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 V_DD = 5V, T_A = 25°C.
Note 4: Guaranteed by design, but not tested.
Note 5: Worst-case t_PLH – t_PHL skew for a single receiver in a package
over the full operating temperature range.
Note 6: Maximum difference between any two t_PLH or t_PHL transitions in a
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.
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