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PARAMETER MEASUREMENT INFORMATION

500

Ω

CL = 25 pF on Yn

From Output

Under Test

1.7 V or 2 V

0.4 V

0.4 V

tPLH

tPHL

50% VDD

50% VDD

VDD

0 V

VOH

VOL

tr

tf

CLK

Yn

50% VDD

50% VDD

VDD

0 V

VOL

VOH

VOL

VOH

CLK

Any Y

Any Y

tsk(o)

tsk(o)

50% VDD

50% VDD

CLK

Yn

tPLH

tPHL

NOTE: tsk(p) = | tPLH − tPHL |

VDD

0 V

VOL

VOH

CDCVF310

SCAS771B – AUGUST 2004 – REVISED JANUARY 2008

A.

CL includes probe and jig capacitance.

B.

All input pulses are supplied by generators having the following characteristics: Clock Frequency

≤ 200 MHz, ZO = 50

Ω,

tr < 1.2 ns, tf < 1.2 ns.

Figure 2. Test Load Circuit

Figure 3. Voltage Waveforms Propagation Delay Times

Figure 4. Output Skew

Figure 5. Pulse Skew

8

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