ISO6763FDWR datasheet(23/44 Pages) TI

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8.4 Device Functional Modes

Table 8-3 lists the functional modes for the ISO6760L devices.

Table 8-3. Function Table

VCCI (1)

VCCO

INPUT

(INx_H and

INx_L) (3)

OUTPUT

(OUTx_H and

OUTx_L)

COMMENTS

Normal

Normal Operation: A channel output assumes the logic state of its input

noted in ISO6760L Device Truth Table and ISO6760LN (Inverted) Device Truth

Table .

Open

Low

Output Low: When VCCI is unpowered and VCCO is powered up, the output

interlock circuit will set the output to logic low.

When VCCI transitions from unpowered to powered-up, a channel output

assumes the logic state in ISO6760L Device Truth Table and ISO6760LN

(Inverted) Device Truth Table .

When VCCI transitions from powered-up to unpowered, channel output will be

the output low state.

Undetermined

When VCCO is unpowered, a channel output is undetermined(2).

When VCCO transitions from unpowered to powered-up, a channel output

assumes the logic state of its input noted in ISO6760L Device Truth Table

and ISO6760LN (Inverted) Device Truth Table .

(1)

VCCI = Input-side VCC; VCCO = Output-side VCC; PU = Powered up (VCC ≥ 1.71 V); PD = Powered down (VCC ≤ 1.05 V); X = Irrelevant;

H = High level; L = Low level ; Z = High Impedance

(2)

The outputs are in undetermined state when 1.7 V < VCCI, VCCO < 2.25 V and 1.05 V < VCCI, VCCO < 1.71 V

(3)

A strongly driven input signal can weakly power the floating VCC through an internal protection diode and cause undetermined output

8.4.1 Device I/O Schematics

Input (Devices without F suffix)

985

INx

VCCI

Input (Devices with F suffix)

985

INx

VCCI

Output

VCCO

~20

OUTx

VCCI

1.5 M

Figure 8-4. Device I/O Schematics

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ISO6760L

SLLSFO3 – DECEMBER 2021

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