ELM303 View Datasheet(PDF) - Elm Electronics
Part Name
Description
Manufacturer
ELM303 Datasheet PDF : 5 Pages
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ELM303
Electrical Characteristics
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 Units
Conditions
Supply voltage, VDD
3.0
5.0
5.5
V
VDD rate of rise
0.05
V/ms see note 2
Average supply current, IDD
1.0
2.4
mA
Input low voltage
VSS
0.15 VDD
V
Input high voltage
0.85 VDD
VDD
V
Internal pullup resistances
(see note 3)
300
500
600
KΩ Pin 4 (I0)
20
30
50
KΩ Pins 6 (Power) and 7 (LANC)
Output low voltage
0.6
V Current (sink) = 8.7mA
Circuit timing
Power Pulse
180
Control L bus
200
9600
220
msec VDD = 5V (see note 4)
baud VDD = 5V (see note 4)
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. The value of the internal pullup resistance is both supply and temperature dependent.
4. Circuit timing is affected by supply and temperature variations as shown in Figure 1 below. Results shown
are average values that can be expected.
ELM303DSA
-6
fast -4
-2
% Error 0
+2
slow +4
+6
-40
0
40
Temperature (°C)
Figure 1. Average Timing Error
VDD = 5V
VDD = 3V
80
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