SN75161B, SN75162B

OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS005B – OCTOBER 1980 – REVISED MAY 1995

9

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

VOLTAGE WAVEFORMS

LOAD CIRCUIT

480

Ω

200

Ω

(see Note A)

CL = 30 pF

Test Point

5 V

Output

Bus

Input

Terminal

See Note B

VOH

VOH

0 V

3 V

tPHL

2.2 V

1.0 V

1.5 V

tPLH

1.5 V

From (Bus)

Output Under

Test

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.

Figure 1. Terminal-to-Bus Load Circuit and Voltage Waveforms

See Note B

1.5 V

tPLH

1.5 V

1.5 V

1.5 V

tPHL

3 V

0 V

VOH

VOL

Bus

Input

Output

From (Terminal)

Output Under

Test

4.3 V

Test Point

CL = 30 pF

(see Note A)

240

Ω

3 k

Ω

LOAD CIRCUIT

VOLTAGE WAVEFORMS

Terminal

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.

Figure 2. Bus-to-Terminal Load Circuit and Voltage Waveforms