HD74LVCZ245A Просмотр технического описания (PDF) - Renesas Electronics

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HD74LVCZ245A

Octal Bidirectional Transceivers with 3–state Outputs

Renesas Electronics 

HD74LVCZ245A

Switching Characteristics

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 1.7

—

5.0±0.5 —

—

Between output pin skew *1 tOSLH

2.7

—

—

tOSHL

3.3±0.3 —

—

5.0±0.5 —

—

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

tOSLH = |tPLHm–tPLHn|, tOSHL = |tPHLm–tPHLn|

Test Circuit

VCC

VCC

Max

7.3

6.3

4.8

9.5

8.5

7.0

8.5

7.5

6.5

—

1.0

1.0

Unit

ns

ns

ns

ns

(Ta = –40 to 85°C)

FROM

TO

(Input) (Output)

A or B

B or A

OE

A or B

OE

A or B

OE

Input

Pulse generator

Zout = 50 Ω

T/R

S1

A0

B0

Output

CL =

50 pF

500 Ω S2

450 Ω

50 Ω Scope

OPEN

*1 See

under table

GND

Note: 1. CL includes probe and jig capacitance.

Symbol

tPLH / t PHL

tZH/ t HZ

tZL / t LZ

S2

Vcc=2.7V,

3.3±0.3V

Vcc=5.0±0.5V

OPEN

OPEN

GND

GND

6V

2×VCC

Rev.3.00 Aug. 18, 2004 page 5 of 8

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