ISO1640 datasheet(11/28 Pages) TI

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over recommended operating conditions, unless otherwise noted

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

4.5 V ≤ VCC1, VCC2 ≤ 5.5 V

tf1

Output signal fall time

(SDA1 and SCL1)

0.7 × VCC1 ≥ VO ≥ 0.3 × VCC1, R1 = 1430 Ω,

C1 = 40 pF, R2 = 95.3 Ω, C2 = 400 pF, see Test

Diagram

0.9 × VCC1 ≥ VO ≥ 900 mV, R1 = 1430 Ω,

C1 = 40 pF, see Test Diagram

tf2

Output signal fall time

(SDA2 and SCL2)

0.7 × VCC2 ≥ VO ≥ 0.3 × VCC2, R2 = 143 Ω,

C2 = 400 pF, see Test Diagram

0.9 × VCC2 ≥ VO ≥ 400 mV, R2 = 143 Ω,

C2 = 400 pF, see Test Diagram

tpLH1-2

Low-to-high propagation delay,

side 1 to side 2

VI = 535 mV, VO = 0.7 × VCC2, R1 = 1430 Ω, R2 = 143

Ω, C1 and C2 = 10 pF, see Test Diagram

tpHL1-2

High-to-low propagation delay,

side 1 to side 2

VI = 550 mV, VO = 0.3 × VCC2, R1 = 1430 Ω, R2 = 143

Ω, C1 and C2 = 10 pF, see Test Diagram

tpLH2-1

Low-to-high propagation delay,

side 2 to side 1(1)

VI = 0.4 x VCC2, VO = 0.7 x VCC1, R1 = 1430 Ω, R2 =

143 Ω, C1 and C2 = 10 pF, see Test Diagram

tpHL2-1

High-to-low propagation delay,

side 2 to side 1(1)

VI = 0.4 x VCC2, VO = 0.3 × VCC1, R1 = 1430 Ω, R2 =

143 Ω, C1 and C2 = 10 pF, see Test Diagram

PWD1-2

Pulse width distortion

|tpHL1-2 – tpLH1-2|

R1 = 1430 Ω, R2 = 143 Ω, C1 and C2 = 10 pF,

see Test Diagram

PWD2-1

Pulse width distortion(1)

|tpHL2-1 – tpLH2-1|

R1 = 1430 Ω, R2 = 143 Ω, C1 and C2 = 10 pF,

see Test Diagram

tLOOP1

Round-trip propagation delay on

side 1(1)

0.4 V ≤ VI ≤ 0.3 × VCCI, R1 = 1430 Ω,

C1 = 40 pF, R2 = 143 Ω, C2 = 400 pF, see Test

Diagram

(1)

This parameter does not apply to the SCL1 line of the ISO1641 device because it is unidirectional.

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ISO1640-Q1

SLLSFC3 – OCTOBER 2020

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