Elm Electronics – Circuits for the Hobbyist

< http://www.elmelectronics.com/ >

ELM339

Electrical Characteristics

Absolute Maximum Ratings

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

Ambient Temperature with

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

Voltage on any other pin with

Note:

Stresses beyond those listed here will likely damage

the device. These values are given as a design

guideline only. The ability to operate to these levels

is neither inferred nor recommended.

3 of 4

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

4.5

5.0

5.5

V

0.05

V/ms

1.0

2.4

mA

see note 3

Notes:

1. This integrated circuit is produced with a Microchip Technology Inc.’s PIC12C5XX as the core embedded

microcontroller. For further device specifications, and possibly clarification of those given, please refer to the

appropriate Microchip documentation.

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. Device only. Does not include any LED or drive currents.

4. Pulse timing is affected by both temperature and supply voltage. Times shown are the widest variation that

can normally be expected.

5. The state of Pulse7 is determined after each valid 7 series code is sent. The level need not be set prior to

sending the codes.

Input low voltage

V

Input high voltage

V

Output low voltage

0.6

V

Output high voltage

V

Current (sink) = 8.7mA

Current (source) = 5.4mA

see note 2

ELM339DSA

Out7 Pulse Width

260

msec

Pulse7 Setup Time

0

msec

see note 5

250

275

see note 4