HD74HC684P 查看數據表（PDF） - Renesas Electronics

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HD74HC684P

8-bit Magnitude Comparator

Renesas Electronics 

HD74HC682, HD74HC684

Test Circuit

VCC

Input

Pulse Generator

Zout = 50 Ω

VCC

Output

P0

P=Q

P7

Output

Q0

P>Q

Q7

CL =

50 pF

CL =

50 pF

Note : 1. CL includes probe and jig capacitance.

Waveforms

tr

tf

90 %

90 %

VCC

Input

50 %

50 %

10 %

10 %

0V

tPLH

tPHL

Same-phase output

50 %

10 %

90 %

tPHL tTLH

90 %

VOH

50 %

10 %

VOL

tPLH

tTHL

Inverse-phase output

90 %

50 %

10 %

90 %

VOH

50 %

10 %

VOL

tTHL

tTLH

Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns

2. The output are measured one at a time with one transition per measurement.

Rev.2.00 Mar 30, 2006 page 5 of 6

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