ISO7641FC datasheet(7/31 Pages) TI

7 / 31 page

ISO7631FM, ISO7631FC

ISO7640FC, ISO7641FC

www.ti.com

SLLSEC3A – SEPTEMBER 2012 – REVISED SEPTEMBER 2012

ELECTRICAL CHARACTERISTICS

VCC1 at 5 V ± 10% and VCC2 at 3.3 V ± 10% (over recommended operating conditions unless otherwise noted)

ISO7631F, ISO7640F, ISO7641F

M-Grade

C-Grade

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

IOH = –4 mA; see OUTx on VCC1 (5V) side

VCC1 – 0.8

4.8

VCC1 – 0.8

4.7

Figure 1

OUTx on VCC2 (3.3V) side

VCC2 - 0.4

VCC2 - 0.6

2.9

High-level output

VOH

voltage

IOH = –20 μA;

OUTx on VCC1 (5V) side

VCC1 – 0.1

see Figure 1

OUTx on VCC2 (3.3V) side

VCC2 – 0.1

3.3

VCC2 – 0.1

3.3

IOL = 4 mA; see Figure 1

0.2

0.4

0.3

0.5

Low-level output

VOL

voltage

IOL = 20 μA; see Figure 1

0.1

VI(HYS)

Input threshold voltage

430

hysteresis

IIH

High-level input current

VIH = VCC at INx or ENx

μA

IIL

Low-level input current

VIL = 0 V at INx or ENx

-10

Common-mode

CMTI

VI = VCC or 0 V; see Figure 4

kV/

μs

transient immunity

SWITCHING CHARACTERISTICS

VCC1 at 5 V ± 10% and VCC2 at 3.3 V ± 10% (over recommended operating conditions unless otherwise noted)

ISO7631F, ISO7640F, ISO7641F

M-Grade

C-Grade

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

tPLH, tPHL

Propagation delay time

See Figure 1

PWD(1)

Pulse width distortion |tPHL – tPLH|

3.5

Same-direction Channels

2.5

4.5

tsk(o)

(2)

Channel-to-channel output skew time

Opposite-direction Channels

3.5

5.5

tsk(pp)

(3)

Part-to-part skew time

Output signal rise time

3.6

See Figure 1

Output signal fall time

1.2

3.3

Disable Propagation Delay, high-to-

tPHZ

6.5

high impedance output

Disable Propagation Delay, low-to-

tPLZ

6.5

high impedance output

See Figure 2

Enable Propagation Delay, high

tPZH

5.5

11000

22000(4)

impedance-to-high output

Enable Propagation Delay, high

tPZL

5.5

impedance-to-low output

Fail-safe output delay time from input

tfs

See Figure 3

9.5

8.5

μs

data or power loss

(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.

(4)

The enable signal rate for C-grade devices should be

≤ 45 Kbps.

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