Input

3 V

1.5 V

1.5 V

0 V

0 V

0 V

1.5 V

3 V

Input

≈ 1.3 V

0.5 V

Output

Output

0 V

1.5 V

3 V

Input

Input

3 V

1.5 V

0 V

Output

1.5 V

Output

≈ 1.3 V

≈ 4.5 V

0.5 V

S1 to 1.5 V

S2 Open

S3 Closed

S3 Open

S2 Closed

S1 to −1.5 V

S1 to 1.5 V

S2 Closed

S3 Closed

S3 Closed

S2 Closed

S1 to −1.5 V

VOLTAGE WAVEFORMS

TEST CIRCUIT

50

Ω

S3

5 V

S2

2 k

Ω

5 k

Ω

S1

−1.5 V

1.5 V

Input

Generator

(see Note A)

(see Note B)

SN65LBC180A

SN75LBC180A

PARAMETER MEASUREMENT INFORMATION (continued)

A.

The input pulse is supplied by a generator having the following characteristics: PRR

B.

Figure 8. Receiver Output Enable and Disable Times

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