Philips Semiconductors

Product specification

74F1604

Latch

October 4, 1990

5

AC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST

UNIT

CONDITION

MIN

TYP

MAX

MIN

MAX

Propagation delay

SELECT A/B to Qn (non–inverting)

Waveform 2

3.0

3.5

5.5

6.5

8.5

10.0

2.5

3.0

9.0

11.5

ns

Propagation delay

SELECT A/B to Qn (inverting)

Waveform 1

4.0

2.5

7.0

4.5

10.5

7.5

3.5

2.0

12.0

8.0

ns

Propagation delay

LE to Qn

Waveform 3

6.5

6.0

9.5

9.0

13.0

12.5

5.5

5.0

15.0

14.0

ns

Propagation delay

An or Bn to Qn

Waveform 1, 2

4.0

4.0

6.5

7.0

9.5

10.5

3.5

3.5

10.5

12.5

ns

AC SETUP REQUIREMENTS

LIMITS

SYMBOL

PARAMETER

TEST

UNIT

CONDITION

MIN

TYP

MAX

MIN

MAX

Setup time, high or low

An, Bn to LE

Waveform 4

0.0

1.0

0.0

3.5

ns

Hold time, high or low

An, Bn to LE

Waveform 4

1.5

3.0

2.0

3.5

ns

LE Pulse width, low

Waveform 4

6.5

7.5

ns

AC WAVEFORMS

An, Bn,

SELCET A/B

Qn

SF00557

Waveform 1. Propagation delay for SELECT A/B to output

(A register stored data = low) or An. Bn to output

An, Bn,

SELCET A/B

Qn

SF00558

Waveform 2. Propagation delay for SELECT A/B to output

(A register stored data = low) or An. Bn to output

LE

Qn

SF00559

Waveform 3. Propagation delay for latch enable to output

An, Bn

LE

SF00560

Waveform 4. Setup time and hold times and LE pulse width

Note to AC waveforms

The shaded areas indicate when the input is permitted to change for predictable output performance.