HD74HCT540FPEL Просмотр технического описания (PDF) - Renesas Electronics

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HD74HCT540FPEL

Octal Buffers/Line Drivers (with 3-state outputs)

Renesas Electronics 

HD74HCT540, HD74HCT541

Test Circuit

VCC

VCC

Input

Pulse Generator

Zout = 50 Ω

G1, G2

Output

Y1 to Y8

A1 to A8

1 kΩ S1

CL =

50 pF

TEST

tPLH / tPHL

tZH / tHZ

tZL / tLZ

OPEN

GND

VCC

S1

OPEN

GND

VCC

Note : 1. CL includes probe and jig capacitance.

Rev.2.00 Mar 30, 2006 page 4 of 8

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