Hi-Speed USB 2.0 Switches

with ±15kV ESD

4

_______________________________________________________________________________________

Test Circuits/Timing Diagrams

SWITCH IS ENABLED.

MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.

OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.

CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.

SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.

CB

NC1

COM1

NO1*

MAX4983E/

MAX4984E

OFF-ISOLATION = 20log

CROSSTALK = 20log

NETWORK

ANALYZER

50

Ω

50

Ω

50

Ω

50

Ω

MEAS

REF

50

Ω

*FOR CROSSTALK THIS PIN IS NO2.

NC2 AND COM2 ARE OPEN.

Figure 1. Off-Isolation and Crosstalk

tR < 5ns

tF < 5ns

50%

LOGIC

INPUT

COM

(

)

0V

NO

OR NC

SWITCH

OUTPUT

LOGIC

INPUT

IN DEPENDS ON SWITCH CONFIGURATION;

INPUT POLARITY DETERMINED BY SENSE OF SWITCH.

MAX4983E/

MAX4984E

EN (EN)

Figure 2. Switching Time