SN55ALS161, SN75ALS161

OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS019E – JUNE 1986 – REVISED NOVEMBER 1999

10

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

LOAD CIRCUIT

VOLTAGE WAVEFORMS

VOH

VOH

0 V

3 V

1 V

1.5 V

2.2 V

1.5 V

Bus Output

Terminal

Input

(see Note B)

Test Point

CL = 30 pF

= [50 pF]

(see Note A)

200

Ω

[500

Ω]

From (Bus)

Output Under

Test

5 V

tPLH

tPHL

[7 V]

480

Ω

[500

Ω]

[ ] denotes the SN55ALS161 military test conditions.

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