hcs473 Microchip Technology Inc., hcs473 Datasheet - Page 51

• Manufacturer Part Number: hcs473
• Description: Code Hopping Encoder And Transponder
• Manufacturer: Microchip Technology Inc.

7.0
7.1
Ambient temperature under bias.......................................................................................................... -40°C to +125°C
Storage temperature ........................................................................................................................... -65°C to +150°C
Voltage on V
Voltage on LED w/respect to V
Voltage on all other pins w/respect to V
Total power dissipation
Maximum current out of V
Maximum current into V
Input clamp current, I
Output clamp current, I
Maximum output current sunk by any Output pin................................................................................................. 25 mA
Maximum output current sourced by any Output pin ........................................................................................... 25 mA
 2002 Microchip Technology Inc.
† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
Note 1: Power dissipation is calculated as follows: P
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
DD
w/respect to V
IK
(1)
OK
(V
DD
.................................................................................................................................. 500 mW
SS
I
(Vo < 0 or Vo >V
< 0 or V
pin ........................................................................................................................... 100 mA
pin ........................................................................................................................ 100 mA
SS
SS
.......................................................................................................... -0.3V to +7.5V
.............................................................................................................-0.3V to +11V
I
> V
SS
DD
) ....................................................................................................... ±20 mA
.......................................................................................-0.3V to V
DD
).................................................................................................. ±20 mA
†
Preliminary
DIS
=V
DD
x {I
DD
- Â I
OH
} + Â {(V
DD
-V
OH
) x I
HCS473
OH
DS40035C-page 49
} + Â(V
DD
O
l x I
+0.3V
OL
).