DocID025373 Rev 1

3/16

RHFLVDS228A

Functional description

16

1

Functional description

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 1)

Note:

Vid = (VIN+)-(VIN-), L = low level, H = high level, X = don’t care, Z = high impedance

Table 2. Mux truth table

SL1

SL2

SL3

SL4

OUT1

OUT2

OUT3

OUT4

Mode

0000

IN1

IN1

IN3

IN3

Splitter

0001

IN1

IN1

IN3

IN4

Splitter/repeater

0010

IN1

IN1

IN1

IN1

Splitter

0011

IN1

IN1

IN4

IN4

0100

IN1

IN2

IN3

IN3

Splitter/repeater

0101

IN1

IN2

IN3

IN4

Repeater

0110

IN1

IN2

IN4

IN3

Repeater/switch

0111

IN1

IN2

IN4

IN4

Splitter/repeater

1000

IN2

IN2

IN2

IN2

Splitter

1001

IN2

IN1

IN3

IN4

Switch/repeater

1010

IN2

IN1

IN4

IN3

Switch

1011

IN3

IN3

IN3

IN3

Splitter

1100

IN2

IN2

IN3

IN3

1101

IN2

IN2

IN3

IN4

Splitter/repeater

1110

IN4

IN4

IN4

IN4

Splitter

1111

IN2

IN2

IN4

IN4

Table 3. Enable (EN) truth table

EN

Inputs

Outputs

(IN+) - (IN-)

OUT+

OUT-

LX

Z

Z

H or floating

(internal pull-up)

Vid

≥ 0.1 V

H

L

Vid

≤-0.1 V

L

H

-0.1V < Vid < +0.1 V

Unknown

Full fail-safe open/short or

terminated

HL