HCS473 Datasheet, PDF (51/68 Pages) Microchip Technology – Code Hopping Encoder and Transponder

HCS473
7.0 ELECTRICAL CHARACTERISTICS
7.1 Absolute Maximum Ratings †
Ambient temperature under bias.......................................................................................................... -40°C to +125°C
Storage temperature ........................................................................................................................... -65°C to +150°C
Voltage on VDD w/respect to VSS .......................................................................................................... -0.3V to +7.5V
Voltage on LED w/respect to VSS .............................................................................................................-0.3V to +11V
Voltage on all other pins w/respect to VSS .......................................................................................-0.3V to VDD+0.3V
Total power dissipation⁽¹⁾ .................................................................................................................................. 500 mW
Maximum current out of VSS pin ........................................................................................................................ 100 mA
Maximum current into VDD pin ........................................................................................................................... 100 mA
Input clamp current, IIK (VI < 0 or VI > VDD) ....................................................................................................... ±20 mA
Output clamp current, IOK (Vo < 0 or Vo >VDD).................................................................................................. ±20 mA
Maximum output current sunk by any Output pin................................................................................................. 25 mA
Maximum output current sourced by any Output pin ........................................................................................... 25 mA
Note 1: Power dissipation is calculated as follows: PDIS=VDD x {IDD - Â IOH} + Â {(VDD-VOH) x IOH} + Â(VOl x IOL).
† 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.
 2002 Microchip Technology Inc.
Preliminary
DS40035C-page 49