SCAN90004 datasheet(5/8 Pages) NSC

5 / 8 page

Electrical Characteristics (Continued)

Over recommended operating supply and temperature ranges unless other specified.

Symbol

Parameter

Conditions

Min

Typ

(Note 4)

Max

Units

SWITCHING CHARACTERISTICS — SCAN FEATURES

MAX

Maximum TCK Clock

Frequency

L = 500

Ω,

L =35pF

25.0

MHz

TDI to TCK, H or L

3.0

TDI to TCK, H or L

0.5

TMS to TCK, H or L

2.5

TMS to TCK, H or L

0.5

TCK Pulse Width, H or L

10.0

TRST Pulse Width, L

2.5

REC

Recovery Time, TRST to TCK

1.0

Note 4: Typical parameters are measured at VDD = 3.3V, TA = 25˚C. They are for reference purposes, and are not production-tested.

Note 5: Differential output voltage VOD is defined as ABS(OUT+–OUT−). Differential input voltage VID is defined as ABS(IN+–IN−).

Note 6: Output offset voltage VOS is defined as the average of the LVDS single-ended output voltages at logic high and logic low states.

Note 7: Jitter is not production tested, but guaranteed through characterization on a sample basis.

Note 8: Random Jitter, or RJ, is measured RMS with a histogram including 1500 histogram window hits. The input voltage = VID = 500mV, 50% duty cycle at

750MHz, tr =tf = 50ps (20% to 80%).

Note 9: Deterministic Jitter, or DJ, is measured to a histogram mean with a sample size of 350 hits. The input voltage = VID = 500mV, K28.5 pattern at 1.5 Gbps,

tr =tf = 50ps (20% to 80%). The K28.5 pattern is repeating bit streams of (0011111010 1100000101).

Note 10: Total Jitter, or TJ, is measured peak to peak with a histogram including 3500 window hits. Stimulus and fixture jitter has been subtracted. The input voltage

=VID = 500mV, 2

23-1 PRBS pattern at 1.5 Gbps, t

r =tf = 50ps (20% to 80%).

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