0 V

0 V

VOLTAGE WAVEFORMS

SETUP AND HOLD TIMES

Data Input

0 V

Input

Out-of-Phase

Output

In-Phase

Output

Timing Input

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

INVERTING AND NONINVERTING OUTPUTS

Output

Control

Output

Waveform 1

(see Note B)

Output

Waveform 2

S1 at GND

(see Note B)

0 V

≈0 V

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

LOW- AND HIGH-LEVEL ENABLING

Open Drain

Open

GND

TEST

S1

0 V

VOLTAGE WAVEFORMS

PULSE DURATION

Input

From Output

Under Test

(see Note A)

LOAD CIRCUIT FOR

3-STATE AND OPEN-DRAIN OUTPUTS

S1

GND

From Output

Under Test

(see Note A)

Test

Point

LOAD CIRCUIT FOR

TOTEM-POLE OUTPUTS

Open

SN54AHC02

SN74AHC02

www.ti.com

SCLS254L – DECEMBER 1995 – REVISED MAY 2013

PARAMETER MEASUREMENT INFORMATION

A.

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

≤ 3 ns.

D.

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

E.

All parameters and waveforms are not applicable to all devices.

Figure 1. Load Circuit and Voltage Waveforms

Copyright © 1995–2013, Texas Instruments Incorporated

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