HD74LVC240AFPEL Просмотр технического описания (PDF) - Renesas Electronics

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HD74LVC240AFPEL

Octal Buffers / Line Drivers with 3-state Outputs

Renesas Electronics 

HD74LVC240A

Switching Characteristics

Ta = –40 to 85°C

Item

Symbol VCC (V) Min

Typ

Propagation delay time tPLH

2.7

—

—

tPHL

3.3±0.3 1.5

—

5.0±0.5 —

—

Output enable time

tZH

2.7

—

—

tZL

3.3±0.3 1.5

—

5.0±0.5 —

—

Output disable time

tHZ

2.7

—

—

tLZ

3.3±0.3 1.5

—

5.0±0.5 —

—

Between output pins skew tOSLH

2.7

—

—

*1

tOSHL

3.3±0.3 —

—

5.0±0.5 —

—

Input capacitance

CIN

2.7

—

3.0

Output capacitance

CO

2.7

—

15.0

Note: 1. This parameter is characterized but not tested.

tosLH = | tPLHm - tPLHn|, tosHL = | tPHLm - tPHLn|

Max

7.5

6.5

5.0

9.0

8.0

6.5

8.0

7.0

6.0

—

1.0

1.0

—

—

Unit

ns

ns

ns

ns

pF

pF

Test Circuit

VCC

VCC

From

(Input)

A

To

(Output)

Y

G

Y

G

Y

Input

Pulse generator

Zout = 50 Ω

1G, 2G

Output

1Y1 to 2Y4

1A1 to 2A4

CL =

50 pF

500 Ω S1

450 Ω

50 Ω Scope

OPEN

*1 See under table

GND

Symbol

tPLH / t PHL

tZH/ t HZ

tZL / t LZ

S1

Vcc=2.7V,

3.3±0.3V

Vcc=5.0±0.5V

OPEN OPEN

GND

GND

6V

2×Vcc

Note: 1. CL includes probe and jig capacitance.

Rev.4.00 Jul. 26, 2004 page 4 of 6

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