HD74LVC540A 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics

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HD74LVC540A

Octal Buffers / Line Drivers with 3-state Outputs

Hitachi -> Renesas Electronics 

HD74LVC540A

Test Circuit

VCC

Input

VCC

G1

Output

Pulse generator

Zout = 50 Ω

A1 Y1

500 Ω S1

CL =

450 Ω

50 pF 50 Ω Scope

OPEN

*1 See under table

GND

Notes:

G2

Symbol

S1

Vcc=2.7V,

3.3±0.3V

Vcc=5.0±0.5V

tPLH / t PHL OPEN

OPEN

tZH/ t HZ

GND

GND

tZL / t LZ

6V

2×Vcc

1. CL includes probe and jig capacitance.

2. A2-Y2 to A8-Y8 are identical to above load circuit.

Waveforms – 1

Input A

Output Y

tf

90 %

Vref

10 %

tPLH

Vref

tr

10 %

90 %

Vref

tPHL

Vref

Notes:

1. tr = 2.5 ns, tf = 2.5 ns

2. Input waveform : PRR = 10 MHz, duty cycle 50%

VIH

GND

VOH

VOL

6

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