CDCLVD110

PROGRAMMABLE LOW-VOLTAGE 1:10 LVDS CLOCK DRIVER

SCAS684 – SEPTEMBER 2002

7

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

tPLH1

CLKIN

CLKIN

Q0

Q0

tPHL1

tPLH2

Q1

Q1

tPHL2

tPLH3

tPHL3

Q2

Q2

tPLH4

tPHL4

Q3

Q3

tPLH9

tPHL9

Q9

Q9

NOTES: A. Output skew, tsk(o), is calculated as the greater of:

– The difference between the fastest and the slowest tPLHn (n = 1, 2,…10)

– The difference between the fastest and the slowest tPHLn (n = 1, 2,…10)

B. Part–to–part skew, tsk(pp), is calculated as the greater of:

– The difference between the fastest and the slowest tPLHn (n = 1, 2,…10) across multiple devices

– The difference between the fastest and the slowest tPHLn (n = 1, 2,…10) across multiple devices

C. Pulse skew, tsk(p), is calculated as the magnitude of the absolute time difference between the high-to-low (tPHL) and the low-to-high

(tPLH) propagation delays when a single switching input causes one or more outputs to switch, tsk(p) = | tPHL – tPLH |. Pulse skew

is sometimes referred to as pulse width distortion or duty cycle skew.