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HCS473

Features: Encoder Security• Read protected 64-bit encoder key• 69-bit transmission length• 60-bit, read protected seed for secure learning• Programmable 32-bit serial number• Non-volatile 16/20-bit synchronization counterEncoder Operation• 2.05V to 5.5V operatio...

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SeekIC No. : 004359864 Detail

HCS473: Features: Encoder Security• Read protected 64-bit encoder key• 69-bit transmission length• 60-bit, read protected seed for secure learning• Programmable 32-bit serial number&...

HCS473 Data Sheet

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Part Number:
HCS473
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/3/13

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Product Details

Description



Features:

Encoder Security
• Read protected 64-bit encoder key
• 69-bit transmission length
• 60-bit, read protected seed for secure learning
• Programmable 32-bit serial number
• Non-volatile 16/20-bit synchronization counter
Encoder Operation
• 2.05V to 5.5V operation
• Four switch inputs up to 15 functions codes
• PWM or Manchester modulation
• Selectable Baud Rate (416 - 5,000 bps)
• Transmissions include button queuing information
• PLL interface
Transponder Security
• 2 read protected 64-bit Challenge/Response keys
• Two IFF encryption algorithms
• 16/32-bit Challenge/Response
• Separate Vehicle ID and Token ID
• 2 vehicles supported
• CRC on all communication
Transponder Operation
• Three sensitive transponder inputs
• Bi-directional transponder communication
• Transponder in/RF out operation
• Anticollision of multiple transponders
• Intelligent damping for high Q-factor LC-circuits
• Low battery operation
• Passive proximity activation
• 64-bit secure user EEPROM
• Fast reaction time
Peripherals
• Low Voltage Detector
• On-board RC oscillator with ±10% variation




Application

• Passive entry systems
• Automotive remote entry systems
• Automotive alarm systems
• Automotive immobilizers
• Gate and garage openers
• Electronic door locks (Home/Office/Hotel)
• Burglar alarm systems
• Proximity access control
• Passive proximity authentication




Pinout

Connection Diagram




Specifications

Ambient temperature under bias...................................... -40 to +125
Storage temperature ....................................................... -65 to +150
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).




Description

The HCS473 combines the patented KEELOQ code hopping technology and bi-directional transponder challenge-and-response security into a single chip solution for logical and physical access control.

The three-input transponder interface allows the combination of three orthogonal transponder antennas, eliminating the directionality associated with traditional single antenna transponder systems. When used as a code hopping encoder, the HCS473 is well suited to keyless entry systems; vehicle and garage door access in particular. The same HCS473 can also be used as a secure bi-directional transponder for contactless authentication. These capabilities make the HCS473 ideal for combined secure access control and identification applications, dramatically reducing the cost of hybrid transmitter/transponder solutions.






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