HD74LS374

Rev.2.00, Feb.18.2005, page 5 of 7

Waveforms 1

0V

3V

0V

3V

Data

Clock

Q

10%

90%

1.3 V

1.3 V

1.3 V

1.3 V

10%

90%

1.3 V

10%

90%

10%

90%

1.3 V

1.3 V

1.3 V

Notes:

1.

≤ 15 ns, t

THL

≤ 6 ns

Clock input; PRR = 1 MHz, duty cycle 50%

Data input pulse; PRR = 500 kHz, duty cycle 50%

2.

ƒ

≤ 2.5 ns, t

THL

≤ 2.5 ns

Waveforms 2

Output

Control

Waveform A

Waveform B

1.3V

1.3V

1.3V

1.3V

0.5V

0.5V

0V

0V

3V

4.5V

10%

10%

90%

90%

1.5V

1.5V

Notes:

1.

≤ 15 ns, t

THL

≤ 6 ns, PRR = 1 MHz, duty cycle 50%

2.

Waveform A if for an output with internal conditions such that the output is low except when

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

the output is high except when disabled by the output control.