HD74BC245AP 查看數據表（PDF） - Renesas Electronics

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HD74BC245AP

Octal Bus Transceivers With 3 State Outputs

Renesas Electronics 

HD74BC245A

Test Circuit

VCC

Input

Pulse Generator

Zout = 50 Ω

VCC

G

S1

A1

Output

500 Ω

B1

CL=

450 Ω

DiR

50 pF 50 Ω Scope

*4

OPEN

7V

Notes:

1. CL includes probe and jig capacitance.

2. A2-B2, A3-B3, A4-B4, A5-B5, A6-B6, A7-B7, A8-B8 are identical to above load circuit.

3. S1: Input-Output change switch.

4. Open: tPLH, tPHL, tZH, tHZ

7 V: tZL, tLZ

Rev.4.00, Jul.16.2004, page 5 of 8

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