ISO1640BDR datasheet(15/46 Pages) TI

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6.12 I2C Switching Characteristics

over recommended operating conditions, unless otherwise noted

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

2.25 V ≤ VCC2 ≤ 2.75 V, 3 V ≤ VCC1 ≤ 3.6 V

tf2

Output signal fall time

(SDA2 and SCL2)

0.7 × VCC2 ≥ VO ≥ 0.3 × VCC2, R2 = 72 Ω,

C2 = 400 pF, see Test Diagram

26.5

0.9 × VCC2 ≥ VO ≥ 400 mV, R2 = 72Ω,

C2 = 400 pF, see Test Diagram

53.3

tpLH1-2

Low-to-high propagation delay, side 1

to side 2

VI = 535 mV, VO = 0.7 × VCC2, R1 = 953 Ω, R2 = 72 Ω, C1

and C2 = 10 pF, VCC1 = 3.3 V, see Test Diagram

tpHL1-2

High-to-low propagation delay, side 1 to

side 2

VI = 550 mV, VO = 0.3 × VCC2, R1 = 953 Ω, R2 = 72 Ω, C1

and C2 = 10 pF, VCC1 = 3.3 V, see Test Diagram

130

tpLH2-1

Low-to-high propagation delay, side 2

to side 1(1)

VI = 0.4 x VCC2, VO = 0.7 x VCC1, R1 = 953 Ω, R2 = 72 Ω, C1

and C2 = 10 pF, VCC1 = 3.3 V, 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 = 953 Ω, R2 = 72 Ω, C1

and C2 = 10 pF, VCC1 = 3.3 V, see Test Diagram

100

PWD1-2

Pulse width distortion

|tpHL1-2 – tpLH1-2|

R1 = 953 Ω, R2 = 72 Ω, C1 and C2 = 10 pF, VCC1 = 3.3 V

see Test Diagram

104

PWD2-1

Pulse width distortion(1)

|tpHL2-1 – tpLH2-1|

R1 = 953 Ω, R2 = 72 Ω, C1 and C2 = 10 pF, VCC1 = 3.3 V

see Test Diagram

tLOOP1

Round-trip propagation delay on side

1(1)

0.4 V ≤ VI ≤ 0.3 × VCC1, R1 = 953 Ω,

C1 = 40 pF, R2 = 72 Ω, C2 = 400 pF, see Test Diagram

3 V ≤ VCC1, VCC2 ≤ 3.6 V

tf1

Output signal fall time

(SDA1 and SCL1)

0.7 × VCC1 ≥ VO ≥ 0.3 × VCC1, R1 = 953 Ω,

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

0.9 × VCC1 ≥ VO ≥ 900 mV, R1 = 953 Ω,

C1 = 40 pF, see Test Diagram

tf2

Output signal fall time

(SDA2 and SCL2)

0.7 × VCC2 ≥ VO ≥ 0.3 × VCC2, R2 = 95.3 Ω,

C2 = 400 pF, see Test Diagram

0.9 × VCC2 ≥ VO ≥ 400 mV, R2 = 95.3 Ω,

C2 = 400 pF, see Test Diagram

100

tpLH1-2

Low-to-high propagation delay, side 1

to side 2

VI = 535 mV, VO = 0.7 × VCC2, R1 = 953 Ω, R2 = 95.3 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 = 953 Ω, R2 = 95.3 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 = 953 Ω, R2 = 95.3 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 = 953 Ω, R2 = 95.3 Ω,

C1 and C2 = 10 pF, see Test Diagram

100

PWD1-2

Pulse width distortion

|tpHL1-2 – tpLH1-2|

R1 = 953 Ω, R2 = 95.3 Ω, C1 and C2 = 10 pF,

see Test Diagram

PWD2-1

Pulse width distortion(1)

|tpHL2-1 – tpLH2-1|

R1 = 953 Ω, R2 = 95.3 Ω, C1 and C2 = 10 pF,

see Test Diagram

tLOOP1

Round-trip propagation delay on side

1(1)

0.4 V ≤ VI ≤ 0.3 × VCC1, R1 = 953 Ω,

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

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ISO1640, ISO1641, ISO1644

SLLSFC2C – MAY 2021 – REVISED JUNE 2021

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