ISO7741FDW datasheet(18/52 Pages) TI

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ISO7740, ISO7741, ISO7742

SLLSEP4G – MARCH 2016 – REVISED FEBRUARY 2020

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(1)

Also known as pulse skew.

(2)

tsk(o) is the skew between outputs of a single device with all driving inputs connected together and the outputs switching in the same

direction while driving identical loads.

(3)

tsk(pp) is the magnitude of the difference in propagation delay times between any terminals of different devices switching in the same

direction while operating at identical supply voltages, temperature, input signals and loads.

7.15 Switching Characteristics—5-V Supply

VCC1 = VCC2 = 5 V ±10% (over recommended operating conditions unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH, tPHL

Propagation delay time

See Figure 15

10.7

PWD

Pulse width distortion(1) |tPHL – tPLH|

4.9

tsk(o)

Channel-to-channel output skew time(2)

Same-direction channels

tsk(pp)

Part-to-part skew time(3)

4.4

Output signal rise time

See Figure 15

2.4

3.9

Output signal fall time

2.4

3.9

tPHZ

Disable propagation delay, high-to-high impedance output

See Figure 16

tPLZ

Disable propagation delay, low-to-high impedance output

tPZH

Enable propagation delay, high impedance-to-high output

for ISO774x

Enable propagation delay, high impedance-to-high output

for ISO774x with F suffix

8.5

μs

tPZL

Enable propagation delay, high impedance-to-low output for

ISO774x

8.5

μs

Enable propagation delay, high impedance-to-low output for

ISO774x with F suffix

tDO

Default output delay time from input power loss

Measured from the time VCC goes

below 1.7 V. See Figure 18

0.1

0.3

μs

tie

Time interval error

216 – 1 PRBS data at 100 Mbps

0.8

(1)

Also known as pulse skew.

(2)

tsk(o) is the skew between outputs of a single device with all driving inputs connected together and the outputs switching in the same

direction while driving identical loads.

(3)

tsk(pp) is the magnitude of the difference in propagation delay times between any terminals of different devices switching in the same

direction while operating at identical supply voltages, temperature, input signals and loads.

7.16 Switching Characteristics—3.3-V Supply

VCC1 = VCC2 = 3.3 V ±10% (over recommended operating conditions unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH, tPHL

Propagation delay time

See Figure 15

PWD

Pulse width distortion(1) |tPHL – tPLH|

0.1

tsk(o)

Channel-to-channel output skew time(2)

Same-direction channels

4.1

tsk(pp)

Part-to-part skew time(3)

4.5

Output signal rise time

See Figure 15

1.3

Output signal fall time

1.3

tPHZ

Disable propagation delay, high-to-high impedance output

See Figure 16

tPLZ

Disable propagation delay, low-to-high impedance output

tPZH

Enable propagation delay, high impedance-to-high output

for ISO774x

Enable propagation delay, high impedance-to-high output

for ISO774x with F suffix

3.2

8.5

μs

tPZL

Enable propagation delay, high impedance-to-low output

for ISO774x

3.2

8.5

μs

Enable propagation delay, high impedance-to-low output

for ISO774x with F suffix

tDO

Default output delay time from input power loss

Measured from the time VCC goes

below 1.7 V. See Figure 18

0.1

0.3

μs

tie

Time interval error

216 – 1 PRBS data at 100 Mbps

0.9

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