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ELM404

Electrical Characteristics

Absolute Maximum Ratings

Storage Temperature....................... -65°C to +150°C

Ambient Temperature with

Voltage Applied..................................-40°C to +85°C

Voltage on any other pin with

Note:

Stresses beyond those listed here will likely

damage this device. These values are given as a

design guideline only. The ability to operate to

these levels is neither inferred nor recommended.

All values are for operation at 25°C and a 5V supply, unless otherwise noted. For further information, refer to note 1 below.

Characteristic

Minimum

Typical

Maximum

Conditions

Units

2.0

5.0

5.5

V

0.05

V/msec

0.6

1.1

mA

Notes:

1. This integrated circuit is based on a Microchip Technology Inc. PIC12F5XX device. For more detailed

specifications, please refer to the Microchip documentation (www.microchip.com).

2. This spec must be met in order to ensure that a correct power on reset occurs. It is quite easily achieved

using most common types of supplies, but may be violated if one uses a slowly varying supply voltage, as

may be obtained through direct connection to solar cells, or some charge pump circuits.

3. The internal reset circuitry stops the ELM404 from doing anything during this period, so that the power

supplies and oscillators have time to stabilize. During this time, all pins behave like inputs.

4. Typical only - the actual period varies with the amount of noise present in the input signal.

5. All filtering, delay, and output timing is based on an internal master oscillator. The frequency of this oscillator

will vary with voltage and temperature. Values shown are typical maximums for 2.0V

temperatures of -40°C to +85°C

Output low current

(sink)

10

mA

mA

5.0

see note 2

ELM404DSA

Elm Electronics – Circuits for the Hobbyist

www.elmelectronics.com

Debounce period

msec

5.5

0.2

0.3

mA

Output high current

(source)

2.5

mA

mA

1.7

see note 4

Power on reset time

9

msec

see note 3

18

30

msec

50

Internal timing variation

%

1

4

see note 5

Startup time delay