1998 Nov 18

8

Philips Semiconductors

Product specification

Inverter

74HC1GU04

APPLICATION INFORMATION

Some applications for the HC1GU04 are:

• Linear amplifier (see Fig.11)

• In crystal oscillator design (see Fig.12).

Note to the application information.

All values given are typical unless otherwise specified.

handbook, halfpage

U04

R1

R2

VCC

ZL

MNA052

1

µF

GND

Fig.11 HC1GU04 used as a linear amplifier.

;

R1

≥ 3kΩ,R2 ≤ 1MΩ.

Typical unity gain bandwidth product is 5 MHz.

C1 see Fig.13.

A

u

A

OL

1

R1

R2

-------- 1A

+

(

+

------------------------------------------------

–

=

V

O max (p-p)

V

CC

1.5 V centered at

1

2

--- V

CC

–

≈

Fig.12 Crystal oscillator configuration.

C1 = 47 pF (typical).

C2 = 22 pF (typical).

R1 = 1 to 10 M

Ω (typical).

R2 optimum value depends on the frequency and required stability

handbook, halfpage

MNA053

U04

out

R2

R1

C1

C2

External components for resonator (f < 1 MHz)

FREQUENCY

(kHz)

R1 (M

Ω) R2 (kΩ) C1 (pF) C2 (pF)

10 to 15.9

2.2

220

56

20

16 to 24.9

2.2

220

56

10

25 to 54.9

2.2

100

56

10

55 to 129.9

2.2

100

47

5

130 to 199.9

2.2

47

47

5

200 to 349.9

2.2

47

47

5

350 to 600

2.2

47

47

5

Where:

All values given are typical and must be used as an initial

set-up.