6

ML6509

This is a very important characteristic that the terminator

helps overcome by increasing the noise margin and

boosting the step as high as possible. This capability for

the ML6509 implementation is illustrated in the attached

simulation graphs which show the terminator performance

under different cable impedance situations and a

comparison is shown with the standard Boulay terminator,

under identical conditions.

TERMPWR

NC

NC

GND

DISCNKT

LPWR

L1

L2

ML6509

TERMPWR

NC

NC

GND

DISCNKT

LPWR

L1

L2

L9

L8

L7

L6

L5

L4

L3

ML6509

L9

L8

L7

L6

L5

L4

L3

0.1

µF10µF

10

µF

0.1

µF

10

µF

1

50 Pin SCSI Header Connector

Two Position

DIP Switch

2

2.0V

0.8V

V1(2) = 796.9mV

V2(2) = 2.0V

∆V(2) = 1.203V

Figure 4. Transient Response (Actual)

(Approximately 110

W, 10 feet long, ribbon cable stock)

Figure 5. Typical Application Circuit