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PARAMETER MEASUREMENT INFORMATION

Waveform 1

(see Note E)

Output Z

Output Y

Input A

(see Notes B

and C)

3 V

Skew

Skew

0 V

PROPAGATION DELAY TIMES AND SKEW

TEST CIRCUIT

Test Point

S1

S2

75

Ω

180

Ω

(see Note A)

From Output

Under Test

≈1.5 V

0 V

3 V

Enable G

Enable G

(see Note D)

S1 Open

S2 Closed

S1 Closed

S2 Open

S1 Closed

S2 Closed

0.5 V

≈0 V

≈4.5 V

S1 Closed

S2 Closed

≈1.5 V

ENABLE AND DISABLE TIME WAVEFORMS

See Note D

B. All input pulses are supplied by generators having the following characteristics: PRR

C. When measuring propagation delay times and skew, switches S1 and S2 are open.

D. Each enable is tested separately.

E. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.

1.3 V

1.3 V

1.5 V

1.5 V

1.5 V

1.5 V

Waveform 2

(see Note E)

0.5 V

1.5 V

1.5 V

AM26LS31C, AM26LS31M

QUADRUPLE DIFFERENTIAL LINE DRIVER

SLLS114I – JANUARY 1979 – REVISED FEBRUARY 2006

Figure 1. Test Circuit and Voltage Waveforms

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