ICM7555_2

© NXP B.V. 2009. All rights reserved.

Product data sheet

Rev. 02 — 3 August 2009

4 of 22

NXP Semiconductors

ICM7555

General purpose CMOS timer

8.

Limiting values

[1]

Due to the SCR structure inherent in the CMOS process used to fabricate these devices, connecting any terminal to a voltage greater

external sources not operating from the same power supply be applied to the device before its power supply is established. In multiple

systems, the supply of the ICM7555 must be turned on first.

[2]

Above 25

°C, derate at the following rates:

DIP8 package at 9.3 mW /

°C

SO8 package at 6.2 mW /

°C

[3]

Refer to Section 11.2 “Power supply considerations” section.

9.

Characteristics

Table 4.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol

Parameter

Conditions

Min

Max

Unit

supply voltage

18

V

input voltage

TRIGGER

[1]

−0.3

V

CONTROL_VOLTAGE

−0.3

V

THRESHOLD

−0.3

V

RESET

−0.3

V

output current

-

100

mA

P

power dissipation

[2][3]

DIP8 package

-

1160

mW

SO8 package

-

780

mW

storage temperature

−65

+150

°C

solder point temperature

soldering 60 s

-

300

°C

Table 5.

Characteristics

Sym

bol

Parameter

Conditions

Min

Typ

Max

Unit

supply voltage

3

-

16

V

supply current[1]

-

50

200

µA

-

180

300

µA

Astable mode timing[2][3]

∆f/f

frequency stability

-

1.0

5.0

%

∆f/∆V frequency variation with voltage

-

0.1

3.0

%/V

∆f/∆T frequency variation with

temperature[4]

-

50

-

ppm/

°C

-

75

-

ppm/

°C

-

100

-

ppm/

°C

input voltage

V

V

V

V