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PARAMETER MEASUREMENT INFORMATION

From Output

Under Test

(see Note A)

LOAD CIRCUIT

S1

Open

GND

Output

Control

(low-level

enabling)

Output

Waveform 1

(see Note B)

Output

Waveform 2

S1 at GND

(see Note B)

0 V

0 V

0 V

0 V

VOLTAGE WAVEFORMS

SETUP AND HOLD TIMES

VOLTAGE WAVEFORMS

PULSE DURATION

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

Timing

Input

Data

Input

Input

Open

GND

TEST

S1

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 transition per measurement.

H. All parameters and waveforms are not applicable to all devices.

0 V

0 V

Input

Output

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

1.8 V

± 0.15 V

2.5 V

± 0.2 V

2.7 V

3.3 V

± 0.3 V

1 k

Ω

500

Ω

500

Ω

500

Ω

2

2

6 V

6 V

30 pF

30 pF

50 pF

50 pF

0.15 V

0.15 V

0.3 V

0.3 V

2.7 V

2.7 V

1.5 V

1.5 V

≤2 ns

≤2 ns

≤2.5 ns

≤2.5 ns

INPUT

SN74ALVC244

OCTAL BUFFER/DRIVER

WITH 3-STATE OUTPUTS

SCES188G – FEBRUARY 1999 – REVISED OCTOBER 2004

Figure 1. Load Circuit and Voltage Waveforms

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