74F253 查看數據表（PDF） - Philips Electronics

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74F253

Dual 4-bit input multiplexer (3-State)

Philips Electronics 

Philips Semiconductors

Dual 4-input multiplexer (3-State)

Product specification

74F253

AC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

TEST

CONDITION

tPLH

tPHL

tPLH

tPHL

tPZH

tPZL

tPHZ

tPLZ

Propagation delay

In to Yn

Propagation delay

Sn to Yn

Output Enable time to

High or Low level

Output Disable time

from High or Low level

AC WAVEFORMS

For all waveforms, VM = 1.5V

Waveform NO TAG

Waveform NO TAG

Waveform 2

Waveform 3

Waveform 2

Waveform 3

LIMITS

VCC = +5V

Tamb = +25°C

CL = 50pF

RL = 500Ω

MIN

TYP MAX

VCC = +5V ± 10%

Tamb = 0°C to +70°C

CL = 50pF

RL = 500Ω

MIN

MAX

3.0

4.5

7.0

3.0

7.5

3.0

5.0

7.0

3.0

8.0

4.5

7.5

10.5

4.5

11.0

5.0

8.5

11.0

4.5

12.0

3.0

6.5

8.0

3.0

9.0

3.0

6.5

8.0

3.0

9.0

2.5

3.5

5.0

2.0

6.0

2.0

3.0

5.0

1.5

6.0

UNIT

ns

ns

ns

ns

In, Sn

Yn

VM

tPLH

VM

tPHL

VM

VM

OEn

Yn

VM

tPZL

VM

tPLZ

VM

VOL +0.3V

SF00802

Waveform 1. Propagation Deley, Data and Select to Output

SF00803

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

Output Disable Time from Low Level

OEn

Yn

VM

tPZH

VM

tPHZ

VM

VOH –0.3V

0V

SF00804

Waveform 2. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

1988 Nov 29

6

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