74F374 データシートの表示（PDF） - Philips Electronics

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74F374

74F373 Octal transparent latch (3-State) 74F374 Octal D flip-flop (3-State)

Philips Electronics 

Philips Semiconductors

Latch/flip-flop

Product specification

74F373/74F374

AC SETUP REQUIREMENTS

SYMBOL

PARAMETER

TEST

CONDITION

tsu (H)

tsu (L)

th (H)

th (L)

tw (H)

tsu (H)

tsu (L)

th (H)

th (L)

tw (H)

tw (L)

Setup time, high or low level

Dn to E

Hold time, high or low level

Dn to E

E Pulse width, high

Setup time, high or low level

Dn to CP

Hold time, high or low level

Dn to CP

CP Pulse width,

high or low

74F373

74F374

Waveform 4

Waveform 4

Waveform 1

Waveform 5

Waveform 5

Waveform 5

AC WAVEFORMS

For all waveforms, VM = 1.5V.

The shaded areas indicate when the input is permitted to change for

predictable output performance.

LIMITS

Tamb = +25°C

VCC = +5.0V

CL = 50pF, RL = 500Ω

Tamb = 0°C to +70°C

VCC = +5.0V ± 10%

CL= 50pF, RL = 500Ω

MIN TYP MAX

MIN

MAX

0

0

1.0

1.0

3.0

3.0

3.0

3.0

3.5

4.0

2.0

2.0

2.0

2.0

0

0

0

0

3.5

3.5

4.0

4.0

UNIT

ns

ns

ns

ns

ns

ns

CP VM

1/fmax

tw(H)

tPLH

VM

tw(L)

VM

tPHL

Qn

VM

VM

SF00258

Waveform 1. Propagation delay for clock input to output,

clock pulse widths, and maximum clock frequency

tw(H)

E VM

VM

tPHL

Qn

VM

VM

tPLH

VM

SF00259

Waveform 2. Propagation delay for enable to output

and enable pulse width

Dn VM

tPLH

VM

tPHL

Qn

VM

VM

SF00260

Waveform 3. Propagation delay for data to output

Dn

VM

VM

tsu(H) th(H)

E

VM

VM

tsu(L)

VM

th(L)

VM

SF00261

Waveform 4. Data setup time and hold times

December 5, 1994

7

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