results assume a linear transition between measurement points and are a result of the following equations:

Where:

DS8921, DS8921A, DS8921AT

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SNLS374D – MAY 1998 – REVISED JANUARY 2015

6.5 Receiver Switching Characteristics

MAX

MAX

MAX

TEST CONDITIONS

MIN

TYP

UNIT

8921

8921A

8921AT

14

22.5

20

20

ns

(Figure 3 and Figure 4)

14

22.5

20

20

ns

(Figure 3 and Figure 4)

0.5

5

3.5

5

ns

(Figure 3 and Figure 4)

6.6 Driver Switching Characteristics: Single-Ended Characteristics

MAX

MAX

MAX

TEST CONDITIONS

MIN

TYP

UNIT

8921

8921A

8921AT

10

15

15

15

ns

(Figure 5 and Figure 6)

10

15

15

15

ns

(Figure 5 and Figure 6)

5

8

8

9.5

ns

(Figure 9 and Figure 10)

5

8

8

9.5

ns

(Figure 9 and Figure 10)

Skew

1

5

3.5

3.5

ns

(Figure 5 and Figure 6)

(1)

Difference between complementary outputs at the 50% point.

6.7 Driver Switching Characteristics: Differential Characteristics

(1)

MAX

MAX

MAX

TEST CONDITIONS

MIN

TYP

UNIT

8921

8921A

8921AT

10

15

15

15

ns

(Figure 5, Figure 7, and Figure 8)

10

15

15

15

ns

(Figure 5, Figure 7, and Figure 8)

0.5

6

2.75

2.75

ns

(Figure 5, Figure 7, and Figure 8)

(1)

Differential Delays are defined as calculated results from single ended rise and fall time measurements. This approach in establishing

AC performance specifications has been taken due to limitations of available Automatic Test Equipment (ATE). The calculated ATE

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