RHFLVDS2281 Datasheet, PDF (3/17 Pages) STMicroelectronics – Rad-hard, dual 4x4 crosspoint switch LVDS

RHFLVDS2281
1
Functional description
Functional description
Table 2. Mux truth table
SL1
SL2
SL3
SL4 OUT1 OUT2 OUT3 OUT4
Mode
0
0
0
0
IN1
IN1
IN3
IN3
Splitter
0
0
0
1
IN1
IN1
IN3
IN4 Splitter/repeater
0
0
1
0
IN1
IN1
IN1
IN1
0
0
1
1
IN1
IN1
IN4
IN4
Splitter
0
1
0
0
IN1
IN2
IN3
IN3 Splitter/repeater
0
1
0
1
IN1
IN2
IN3
IN4
Repeater
0
1
1
0
IN1
IN2
IN4
IN3 Repeater/switch
0
1
1
1
IN1
IN2
IN4
IN4 Splitter/repeater
1
0
0
0
IN2
IN2
IN2
IN2
Splitter
1
0
0
1
IN2
IN1
IN3
IN4 Switch/repeater
1
0
1
0
IN2
IN1
IN4
IN3
Switch
1
0
1
1
IN3
IN3
IN3
IN3
1
1
0
0
IN2
IN2
IN3
IN3
Splitter
1
1
0
1
IN2
IN2
IN3
IN4 Splitter/repeater
1
1
1
0
IN4
IN4
IN4
IN4
1
1
1
1
IN2
IN2
IN4
IN4
Splitter
Note: 1 A floating SL pin is equivalent to a low logic level
2 Channels 5, 6, 7, and 8 behave like channels 1, 2, 3 and 4 respectively (see also Figure 2)
Table 3. Enable (EN) truth table
Inputs
Outputs
EN
(IN+) - (IN-)
OUT+
OUT-
L
H or floating
(internal pull-up)
X
Vid  0.1 V
Vid  -0.1 V
-0.1V < Vid < +0.1 V
Full fail-safe open/short or
terminated
Z
Z
H
L
L
H
Unknown
H
L
Note:
Vid = (VIN+)-(VIN-), L = low level, H = high level, X = don’t care, Z = high impedance
DocID027588 Rev 1
3/17
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