SN75179B

DIFFERENTIAL DRIVER AND RECEIVER PAIR

SLLS003E – OCTOBER 1985 – REVISED JUNE 1998

6

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION (CONTINUED)

tt(OD)

tt(OD)

50%

50%

10%

90%

td(OD)

td(OD)

Output

Input

≈ 2.5 V

0 V

3 V

1.5 V

1.5 V

Output

CL = 50 pF

(see Note B)

RL = 54 Ω

50

Ω

≈ – 2.5 V

TEST CIRCUIT

VOLTAGE WAVEFORMS

Generator

(see Note A)

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

≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns,

tf ≤ 6 ns, ZO = 50 Ω.

B. CL includes probe and jig capacitance.

Figure 3. Driver Test Circuit and Voltage Waveforms

VOLTAGE WAVEFORMS

TEST CIRCUIT

VOL

VOH

1.3 V

tPHL

tPLH

1.5 V

50

Ω

Output

Input

0 V

3 V

1.5 V

Output

Generator

(see Note A)

CL = 50 pF

(see Note B)

1.5 V

1.3 V

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

≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns,

tf ≤ 6 ns, ZO = 50 Ω.

B. CL includes probe and jig capacitance.

Figure 4. Receiver Test Circuit and Voltage Waveforms