74HCU04N datasheet(6/7 Pages) PHILIPS

6 / 7 page

September 1993

6

Philips Semiconductors

Product speciﬁcation

Hex inverter

74HCU04

Fig.10 Test set-up for measuring forward

transconductance gfs =dio/dvi at vo is constant

(see also graph Fig.11).

Fig.11 Typical forward transconductance gfs as a

function of the supply voltage VCC at

Tamb =25°C.

APPLICATION INFORMATION

Some applications for the “HCU04” are:

• Linear amplifier (see Fig.12)

• In crystal oscillator designs (see Fig.13)

• Astable multivibrator (see Fig.14)

Fig.12 HCU04 used as a linear amplifier.

ZL > 10 kΩ; AOL = 20 (typ.)

VO max (p-p) ≈ VCC −2 V centered at 1⁄2VCC

3k

Ω≤ R1, R2 ≤ 1 MΩ

Typical unity gain bandwidth product is 5 MHz.

CI (see Fig.15)

AOL = open loop amplification

Au = voltage amplification

A

u

A

OL

1

R1

R2

-------- 1A

OL

+

()

+

---------------------------------------------;

–

=

同様の部品番号 - 74HCU04N

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