SN751177, SN751178

DUAL DIFFERENTIAL DRIVERS AND RECEIVERS

SLLS059D – FEBRUARY 1990 – REVISED MAY 1999

10

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

VOL

VOH

tPHL

tPLH

Output

VOLTAGE WAVEFORMS

TEST CIRCUIT

50

Ω

Output

Input

0 V

3 V

Generator

(see Note B)

CL = 15 pF

(see Note A)

NOTES: A. CL includes probe and jig capacitance.

B. The pulse generator has the following characteristics: PRR

≤ 1 MHz, 50% duty cycle, ZO = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns.

1.5 V

0 V

1.5 V

1.5 V

1.3 V

1.3 V

Figure 7. Receiver Propagation-Time Test Circuit and Voltage Waveforms

VOLTAGE WAVEFORMS

≈ 1.3 V

0.5 V

tPHZ

3 V

0 V

VOH

Input

Output

0 V

3 V

VOL

S1 to –1.5 V

S2 Closed

S3 Open

VOL

1.5 V

≈ 4.5 V

tPZL

3 V

1.5 V

0 V

Output

Input

tPZH

0 V

VOH

0 V

1.5 V

3 V

1.5 V

TEST CIRCUIT

1N916 or Equivalent

2 k

Ω

5 k

Ω

50

Ω

≈ 1.3 V

tPLZ

S1 to –1.5 V

S2 Closed

S3 Closed

S1 to 1.5 V

S2 Closed

S3 Closed

Generator

(see Note B)

CL = 15 pF

(see Note A)

Input

Output

Output

Input

S1 to 1.5 V

S3 Closed

S2 Open

NOTES: A. CL includes probe and jig capacitance.

B. The pulse generator has the following characteristics: PRR

≤ 1 MHz, 50% duty cycle, ZO = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns.

5 V

S3

1.5 V

–1.5 V

S1

S2

0.5 V

1.5 V

1.5 V

Figure 8. Receiver Output Enable- and Disable-Time Test Circuit and Voltage Waveforms