ELM307
Absolute Maximum Ratings
Storage Temperature....................... -65°C to +150°C
Ambient Temperature with
Power Applied....................................-40°C to +85°C
Voltage on V
DD
with respect to V
SS
............ 0 to +7.5V
Voltage on any other pin with
respect to V
SS
........................... -0.6V to (V
DD
+ 0.6V)
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.
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
Supply voltage, V
DD
V
DD
rate of rise
Average supply current, I
DD
Input low voltage
Input high voltage
Internal pullup resistance (pin 4)
Output low voltage
Output high voltage
LED Current
Output PW
pin 3 = L
pin 3 = H
pin 2 = L
pin 2 = H
Minimum
3.0
0.05
Typical
5.0
Maximum Units
5.5
V
V/ms
Conditions
see note 2
see note 3
1.0
V
SS
0.85 V
DD
300
500
2.4
0.15 V
DD
V
DD
600
0.6
mA
V
V
KΩ
V
V
see note 4
Current (sink) = 8.7mA
Current (source) = 5.4mA
no resistor, V
DD
= 3V
see note 4
”
see note 4
”
V
DD
- 0.7
8
0.26
1.05
0.52
5.2
mA
sec
sec
sec
sec
Delay after PW
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. Active current. When powered down, requirements are reduced to much less than 1µA.
4. All internal resistances and oscillators are affected to some extent by both temperature and supply voltage
variations. Timers slow down as voltages are reduced, and speed up as temperatures decrease. The times
shown above will typically be 5% longer for circuits operated at room temperature and a 3V supply.
ELM307DSA
Elm Electronics – Circuits for the Hobbyist
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