SN65ALS180, SN75ALS180

DIFFERENTIAL DRIVER AND RECEIVER PAIRS

SLLS052G – AUGUST 1987 – REVISED APRIL 2003

8

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

0 V

3 V

tt(OD)

tt(OD)

td(ODH)

Output

Input

TEST CIRCUIT

VOLTAGE WAVEFORMS

td(ODL)

RL = 54 Ω

CL = 50 pF

(see Note A)

Output

3 V

Generator

(see Note B)

50

Ω

≈2.5 V

≈–2.5 V

NOTES: A. CL includes probe and jig capacitance.

B. 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.

1.5 V

1.5 V

50%

90%

50%

10%

10%

Figure 3. Driver Test Circuit and Voltage Waveforms

TEST CIRCUIT

VOLTAGE WAVEFORMS

VOH

tPHZ

tPZH

0 V

3 V

Output

Input

Output

S1

0 V or 3 V

RL = 110 Ω

50

Ω

Voff ≈ 0 V

0.5 V

Generator

(see Note B)

CL = 50 pF

(see Note A)

NOTES: A. CL includes probe and jig capacitance.

B. 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.

1.5 V

1.5 V

2.3 V

Figure 4. Driver Test Circuit and Voltage Waveforms

VOLTAGE WAVEFORMS

VOL

tPLZ

tPZL

5 V

0.5 V

0 V

3 V

Output

Input

NOTES: A. CL includes probe and jig capacitance.

B. 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.

TEST CIRCUIT

Output

S1

0 V or 3 V

RL = 110 Ω

50

Ω

Generator

(see Note B)

CL = 50 pF

(see Note A)

5 V

1.5 V

1.5 V

2.3 V

Figure 5. Driver Test Circuit and Voltage Waveforms