ISO7831FDWR datasheet(13/37 Pages) TI1

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ISO7831, ISO7831F

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SLLSEP8B – JULY 2015 – REVISED JUNE 2016

Product Folder Links: ISO7831 ISO7831F

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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.

6.17 Switching Characteristics—2.5-V Supply

VCC1 = VCC2 = 2.5 V ±10% (over recommended operating conditions unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH, tPHL

Propagation delay time

See Figure 13

7.5

11.7

17.5

PWD

Pulse width distortion(1) |tPHL – tPLH|

0.66

4.2

tsk(o)

Channel-to-channel output skew time(2)

Same-direction Channels

2.2

tsk(pp)

Part-to-part skew time(3)

4.5

Output signal rise time

See Figure 13

3.5

Output signal fall time

1.2

3.5

tPHZ

Disable propagation delay, high-to-high impedance

output

See Figure 14

tPLZ

Disable propagation delay, low-to-high impedance

output

tPZH

Enable propagation delay, high impedance-to-high

output for ISO7831

Enable propagation delay, high impedance-to-high

output for ISO7831F

2.5

μs

tPZL

Enable propagation delay, high impedance-to-low

output for ISO7831

2.5

μs

Enable propagation delay, high impedance-to-low

output for ISO7831F

tDO

Default output delay time from input power loss

Measured from the time VCC goes

below 1.7 V. See Figure 15

0.2

μs

tie

Time interval error

216 – 1 PRBS data at 100 Mbps

0.91

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