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Part Number: HCS473
Description: The HCS473 combines the patented KEELOQ code hopping technology and bi-directional transponder challen...
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HCS473
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DataSheet
General Description
HCS473 General 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.
HCS473 Maximum Ratings
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).
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).
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 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
• 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
HCS473 Typical 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
• 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
HCS473 Connection Diagram
HCS473
PDF/DataSheet Download
- Datasheet: HCS473
- File Size: 1669079 KB
- Manufacturer: MICROCHIP [Microchip Technology]
- Click here to Download
- ·HCS00D
- INTERSIL [Intersil Corporation]
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- ·HCS00DMSR
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- ·HCS00HMSR
- INTERSIL [Intersil Corporation]
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- 104076 KB
- ·HCS00K
- INTERSIL [Intersil Corporation]
- Radiation Hardened Quad 2-Input NAND Gate
- 104076 KB
- ·HCS00KMSR
- INTERSIL [Intersil Corporation]
- Radiation Hardened Quad 2-Input NAND Gate
- 104076 KB
- ·HCS00MS
- INTERSIL [Intersil Corporation]
- Radiation Hardened Quad 2-Input NAND Gate
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- INTERSIL [Intersil Corporation]
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- ·HCS02DMSR
- INTERSIL [Intersil Corporation]
- Radiation Hardened Quad 2-Input NOR Gate
- 148238 KB
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