HD74BC540A 查看數據表（PDF） - Renesas Electronics

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HD74BC540A

Octal Buffers/Line Drivers With 3 State Outputs

Renesas Electronics 

HD74BC540A

Test circuit

VCC

Input

Pulse

Generator

Zout = 50Ω

VCC

G1

A1

G2

Output

Y1

CL =

50 pF

500Ω

450Ω

50Ω

Scope

*3

OPEN

7V

Notes:

1. CL includes probe and jig capacitance.

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

3. Open: tPLH, tPHL, tZH, tHZ

7V: tZL, tLZ

Rev.2.00, Jul.16.2004, page 5 of 7

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