TS556_08 datasheet(1/19 Pages) STMICROELECTRONICS

部件名	TS556

功能描述	Low-power dual CMOS timer

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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October 2008

Rev 2

1/19

19

TS556

Low-power dual CMOS timer

Features

■ Very low power consumption:

220 µA typ at VCC = 5 V

180 µA typ at VCC = 3 V

■ High maximum astable frequency 2.7 MHz

■ Pin-to-pin and functionally compatible with

bipolar NE556

■ Wide voltage range: 2 V to 16 V

■ Supply current spikes reduced during output

transitions

■ High input impedance: 1012

Ω

■ Output compatible with TTL, CMOS and logic

MOS

Description

The TS556 is a dual CMOS timer which offers a

very low consumption:

(Icc(TYP) TS556 = 220 µA at VCC =+5V versus

Icc(TYP) NE556 = 6 mA),

and high frequency:

(f(max.) TS556 = 2.7 MHz versus

f(max.) NE556 = 0.1 MHz).

In both monostable and astable modes, timing

remains very accurate.

The TS556 provides reduced supply current

spikes during output transitions, which enable the

use of lower decoupling capacitors compared to

those required by bipolar NE556.

Due to the high input impedance (1012

Ω), timing

capacitors can also be minimized.

N

DIP14

(Plastic package)

D

SO14

(Plastic micropackage)

Control

Voltage

1

2

3

4

5

6

7

14

13

12

11

10

9

8

Discharge

Threshold

Reset

Output

Trigger

GND

Control

Voltage

+V

Discharge

Threshold

Reset

Output

Trigger

S

Pin connections

(top view)

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类似说明 - TS556_08

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