SN74HC74-Q1

DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOP

WITH CLEAR AND PRESET

SCLS577A − MARCH 2004 − REVISED APRIL 2008

5

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

VOLTAGE WAVEFORMS

SETUP AND HOLD AND INPUT RISE AND FALL TIMES

VOLTAGE WAVEFORMS

PULSE DURATIONS

50%

50%

50%

10%

10%

90%

90%

0 V

0 V

Reference

Input

Data

Input

50%

High-Level

Pulse

50%

0 V

50%

50%

0 V

Low-Level

Pulse

VOLTAGE WAVEFORMS

PROPAGATION DELAY AND OUTPUT TRANSITION TIMES

50%

50%

50%

10%

10%

90%

90%

0 V

Input

In-Phase

Output

50%

50%

50%

10%

10%

90%

90%

Out-of-Phase

Output

Test

Point

From Output

Under Test

(see Note A)

LOAD CIRCUIT

B. Phase relationships between waveforms were chosen arbitrarily. 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