N74F30244N 查看數據表（PDF） - Philips Electronics

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N74F30244N

Octal 30Ω line driver with enable, non-inverting (open collector)

Philips Electronics 

Philips Semiconductors

30Ω line drivers

Product specification

74F30240*, 74F30244

AC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

TEST

CONDITION

tPLH

Propagation delay

tPHL

Dn to Qn

tPLH

Propagation delay

tPHL

OEn to Qn

tPLH

Propagation delay

tPHL

Dn to Qn

tPLH

Propagation delay

tPHL

OEn to Qn

AC WAVEFORMS

For all waveforms, VM = 1.5V.

74f30240

Waveform 2

Waveform 1, 2

74f30244

Waveform 1

Waveform 1, 2

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

4.0

10.0 14.5

4.0

15.0

1.0

2.0

5.0

1.0

5.5

4.0

10.0 14.0

4.0

14.5

3.5

6.0

9.0

3.5

10.5

4.0

10.5 14.5

4.0

15.0

3.0

5.5

9.0

3.0

9.5

4.0

9.5

14.0

4.0

14.5

3.5

6.0

9.0

3.5

10.5

UNIT

ns

ns

ns

ns

Dn, OEn

VM

VM

tPLH

tPHL

Qn

VM

VM

SF01384

Waveform 1. Propagation Delay for Data to Output

Dn, OEn

VM

VM

tPHL

tPLH

Qn

VM

VM

SF01385

Waveform 2. Propagation Delay for Data to Output

TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS

9

tPLH

8

7

6

5

4

tPHL

3

2

1

0

0

100

200

300

400

500

600

LOAD RESISTOR (Ω)

NOTE:

When using Open-Collector parts, the value of the pull-up resistor greatly affects the value of the tPLH. For example, changing the

specified pull-up resistor value from 500Ω to 100Ω will improve the tPLH up to 50% with only a slight increase in the tPHL. However,

if the value of the pull-up resistor is changed, the user must make certain that the total IOL current through the resistor and the total

IILs of the receivers does not exceed the IOL maximum specification.

SF01386

* Discontinued part. Please see the Discontinued Products List.

1999 Jan 08

6

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