Philips Semiconductors

Product specification

74F604

Dual octal latch (3-State)

1990 Mar 01

6

AC SETUP REQUIREMENTS

SYMBOL

PARAMETER

TEST

LIMITS

UNIT

SYMBOL

PARAMETER

TEST

CONDITION

UNIT

MIN

TYP

MAX

MIN

MAX

Setup time, High or Low

An, Bn to LE

Waveform 3

1.0

2.0

2.0

3.0

ns

Hold time, High or Low

An, Bn to LE

Waveform 3

0

1.0

0

1.5

ns

LE Pulse width, Low

Waveform 3

5.0

6.0

ns

AC WAVEFORMS

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

VM

VM

tPLH

tPHL

SELECT A/B

Qn

VM

SF01119

VM

Waveform 1. Propagation Delay, SELECT A/B To Output

(B latched data=Low. LE=H)

VM

VM

tPLH

tPHL

SELECT A/B

Qn

VM

SF01120

VM

Waveform 2. Propagation Delay, SELECT A/B to Output

(A latched data=Low. LE=H)

SF01121

An, Bn

LE

Waveform 3. Data Setup and Hold Times,

Latch Enable Pulse Width

LE

Qn

0V

SF01122

Waveform 4. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

LE

Qn

SF01123

Waveform 5. 3-State Output Enable Time to Low Level and

Output Disable Time from Low Level