74ACT11240

OCTAL BUFFER/LINE DRIVER

WITH 3-STATE OUTPUTS

SCAS210A − MAY 1987 − REVISED APRIL 1996

4

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

Output

Input

1.5 V

1.5 V

3 V

0 V

Open

2

GND

TEST

S1

VOLTAGE WAVEFORMS

From Output

Under Test

(see Note A)

LOAD CIRCUIT

S1

2

500

Ω

500

Ω

GND

Open

Output

Control

(low-level

enabling)

Output

Waveform 1

S1 at 2

(see Note B)

Output

Waveform 2

S1 at GND

(see Note B)

1.5 V

1.5 V

0 V

[ 0 V

3 V

VOLTAGE WAVEFORMS

B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

C. All input pulses are supplied by generators having the following characteristics: PRR

D. The outputs are measured one at a time with one input transition per measurement.

Figure 1. Load Circuit and Voltage Waveforms