Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

IDDX

Supply current

CL = 20 pF

100 Mbps,

CL = 20 pF

18

20

mA

VIHL

Low level Schmitt trigger

threshold

Logic input falling

Full supply range

0.8

V

VILH

High level Schmitt trigger

threshold

Logic input rising

Full supply range

2

V

VIHyst

Schmitt trigger input hysteresis

0.5

V

VOL

Low level output voltage

IOH = 4 mA

0.4

V

VOH

High level output voltage

IOL = 4 mA

VDDX –

0.3

V

ZO

Output impedance

-40%

50

+40%

Ω

fMAX

Maximum data rate

VIH = 5 V

100

Mbps

tr

Output rise time

CL = 15 pF

2

4

ns

tf

Output fall time

CL = 15 pF

2

4

ns

tDHL

Propagation delay H to L

See Figure 3

25

42

ns

tDLH

Propagation delay L to H

See Figure 3

25

42

ns

tPOWUP

Power-up time

30

µs

tREFRESH

Refresh time

1

2

µs

tWD

Watchdog timeout

2

6

µs

PWD

Pulse width distortion

|tDHL – tDLH|

Full temperature range (1)

3

ns

CMTI

Common mode transient

immunity

(2)

50

65

kV/µs

1. Not tested in production. Limit is guaranteed by characterization on a limited number of samples representing the worst

case of production flow.

2. Not tested in production. Limit is guaranteed by characterization on a limited number of samples and simulations.

Note:

Testing conditions: Typical values are defined at Tamb = 25°C and VDD1 = VDD2 = 5 V, minimum and

maximum limits applies to the full temperature range (Tested in production at Tamb = 25°C and the

limits in the full temperature range are guaranteed by characterization on a limited quantity of samples),

unless otherwise specified.

Table 5. Electrical characteristics at VDD1 = VDD2 = 3V

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

VDDXon

VDDX on threshold

VDDX rising from 0 V

2.8

V

VDDXhyst

VDDX off hysteresis

VDDX falling from 5 V

0.1

V

IDDX

Supply current

DC

1.5

2

mA

10 Mbps,

CL = 20 pF

3

5

mA

100 Mbps,

CL = 20 pF

11

20

mA

STISO621

Electrical caracteristic

DS13394 - Rev 4

page 4/21