19

• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please review our product specifications or consult the approval sheet for product specifications before ordering.

Application to H-CMOS Inverter

Recently, high-speed C-MOS (H-CMOS) have been used

more frequently for oscillation circuits allowing high

speed and energy saving control for the microprocessor.

There are two types of H-CMOS inverters: the un-

buffered 74HCU series and the 74HC series with

buffers.

oscillation circuit.

Fig. 4-3 shows our standard H-CMOS circuit.

Since H-CMOS has high gain, especially in the high

damping resistor (Rd) should be employed to stabilize

oscillation performance. As a standard circuit, we

recommend Toshiba's TC74CU04, but any 74HCU04

inverter from other manufacturers may be used.

The oscillation frequency for H-CMOS specifications is

adjusted by the circuit in Fig. 4-3.

Fig. 4-3 H-CMOS Standard Circuit

14

12

Rf

34

7

Rd

Output

∗ 60.01—70.00MHz : SN74AHCU04(TI)

4

4

Application to Typical Oscillation Circuits

Item

Part Number

Frequency Rage

Circuit Constant

Rf

Rd

CSTLS□G56

3.40∼10.00MHz

＋ 5V

（47pF）（47pF）

1MΩ

680Ω

CSTLS□X

＋ 3V

（5pF）（5pF）

1MΩ

470Ω

＋ 5V

（15pF）（15pF）

1MΩ

220Ω

＋ 5V

（22pF）（22pF）

1MΩ

0

＋ 5V

（33pF）（33pF）

1MΩ

0

＋ 3V

（5pF）（5pF）

1MΩ

0

＋ 5V

（15pF）（15pF）

1MΩ

0

＋ 5V

（22pF）（22pF）

15KΩ

0

＋ 5V

（33pF）（33pF）

4.7KΩ

0

＋ 5V

（5pF）（5pF）

1MΩ

0

＋ 5V

（15pF）（15pF）

15KΩ

0

＋ 5V

（22pF）（22pF）

4.7KΩ

0

＋ 5V

（33pF）（33pF）

3.3KΩ

0

＋ 5V

（5pF）（5pF）

1MΩ

0

＋ 5V

（15pF）（15pF）

15KΩ

0

P17E.pdf

2012.10.31