X-On Electronics has gained recognition as a prominent supplier of HCS301T/SN Encoders, Decoders, Multiplexers & Demultiplexers across the USA, India, Europe, Australia, and various other global locations. HCS301T/SN Encoders, Decoders, Multiplexers & Demultiplexers are a product manufactured by Microchip. We provide cost-effective solutions for Encoders, Decoders, Multiplexers & Demultiplexers, ensuring timely deliveries around the world.

HCS301T/SN Microchip

HCS301T/SN electronic component of Microchip
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Part No.HCS301T/SN
Manufacturer: Microchip
Category: Encoders, Decoders, Multiplexers & Demultiplexers
Description: Encoders, Decoders, Multiplexers & Demultiplexers 3.5-13V
Datasheet: HCS301T/SN Datasheet (PDF)
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)
1: USD 1.617 ea
Line Total: USD 1.62 
Availability - 3291
Ship by Tue. 26 Nov to Thu. 28 Nov
MOQ: 1  Multiples: 1
Pack Size: 1
Availability Price Quantity
3291
Ship by Tue. 26 Nov to Thu. 28 Nov
MOQ : 1
Multiples : 1
1 : USD 1.617
25 : USD 1.584
100 : USD 1.573
3300 : USD 1.562

   
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We are delighted to provide the HCS301T/SN from our Encoders, Decoders, Multiplexers & Demultiplexers category, at competitive rates not only in the United States, Australia, and India, but also across Europe and beyond. A long established and extensive electronic component distribution network has enhanced our global reach and dependability, ensuring cost savings through prompt deliveries worldwide. Client satisfaction is at the heart of our business, where every component counts and every customer matters. Our technical service team is ready to assist you. From product selection to after-sales support, we strive to deliver a seamless and satisfying experience. Are you ready to experience the best in electronic component distribution? Contact X-ON Electronics today and discover why X-On are a preferred choice for the HCS301T/SN and other electronic components in the Encoders, Decoders, Multiplexers & Demultiplexers category and beyond.

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HCS301 HCS301 KEELOQ Code Hopping Encoder FEATURES DESCRIPTION The HCS301 from Microchip Technology Inc. is a code Security hopping encoder designed for secure Remote Keyless Programmable 28-bit serial number Entry (RKE) systems. The HCS301 utilizes the KEELOQ code hopping technology, which incorporates high Programmable 64-bit encryption key security, a small package outline and low cost, to make Each transmission is unique this device a perfect solution for unidirectional remote 66-bit transmission code length keyless entry systems and access control systems. 32-bit hopping code 34-bit fixed code (28-bit serial number, PACKAGE TYPES 4-bit button code, 2-bit status) PDIP, SOIC Encryption keys are read protected 8 S0 VDD 1 Operating 7 LED 2 3.5V - 13.0V operation S1 Four button inputs 6 PWM 3 S2 No additional circuitry required VSS 15 functions available S3 4 5 Selectable baud rate Automatic code word completion HCS301 BLOCK DIAGRAM Battery low signal transmitted to receiver Oscillator Battery low indication on LED Power latching Non-volatile synchronization data and Controller RESET circuit switching LED Other LED driver Functionally identical to HCS300 Easy-to-use programming interface EEPROM Encoder On-chip EEPROM On-chip oscillator and timing components PWM Button inputs have internal pull-down resistors 32-bit shift register Current limiting on LED output Low external component cost VSS Button input port VDD Typical Applications The HCS301 is ideal for Remote Keyless Entry (RKE) applications. These applications include: S2 S3 S1 S0 Automotive RKE systems The HCS301 combines a 32-bit hopping code, Automotive alarm systems generated by a nonlinear encryption algorithm, with a Automotive immobilizers 28-bit serial number and 6 information bits to create a Gate and garage door openers 66-bit code word. The code word length eliminates the Identity tokens threat of code scanning and the code hopping mecha- nism makes each transmission unique, thus rendering Burglar alarm systems code capture and resend schemes useless. 2001 Microchip Technology Inc. DS21143B-page 1HCS301 The crypt key, serial number and configuration data are Learn Learning involves the receiver calculating stored in an EEPROM array which is not accessible via the transmitters appropriate crypt key, decrypting any external connection. The EEPROM data is pro- the received hopping code and storing the serial grammable but read-protected. The data can be veri- number, synchronization counter value and crypt fied only after an automatic erase and programming key in EEPROM. The KEELOQ product family facil- operation. This protects against attempts to gain itates several learning strategies to be imple- access to keys or manipulate synchronization values. mented on the decoder. The following are The HCS301 provides an easy-to-use serial interface examples of what can be done. for programming the necessary keys, system parame- - Simple Learning ters and configuration data. The receiver uses a fixed crypt key, common to all components of all systems by the same manufacturer, to decrypt the received code 1.0 SYSTEM OVERVIEW words encrypted portion. Key Terms - Normal Learning The receiver uses information transmitted The following is a list of key terms used throughout this during normal operation to derive the crypt data sheet. For additional information on KEELOQ and key and decrypt the received code words Code Hopping, refer to Technical Brief 3 (TB003). encrypted portion. RKE - Remote Keyless Entry - Secure Learn Button Status - Indicates what button input(s) The transmitter is activated through a special activated the transmission. Encompasses the 4 button combination to transmit a stored 60-bit button status bits S3, S2, S1 and S0 (Figure 4-2). seed value used to generate the transmitters Code Hopping - A method by which a code, crypt key. The receiver uses this seed value viewed externally to the system, appears to to derive the same crypt key and decrypt the change unpredictably each time it is transmitted. received code words encrypted portion. Code word - A block of data that is repeatedly Manufacturers code A unique and secret 64- transmitted upon button activation (Figure 4-1). bit number used to generate unique encoder crypt Transmission - A data stream consisting of keys. Each encoder is programmed with a crypt repeating code words (Figure 8-2). key that is a function of the manufacturers code. Crypt key - A unique and secret 64-bit number Each decoder is programmed with the manufac- used to encrypt and decrypt data. In a symmetri- turer code itself. cal block cipher such as the KEELOQ algorithm, The HCS301 code hopping encoder is designed specif- the encryption and decryption keys are equal and ically for keyless entry systems primarily vehicles and will therefore be referred to generally as the crypt home garage door openers. The encoder portion of a key. keyless entry system is integrated into a transmitter, Encoder - A device that generates and encodes carried by the user and operated to gain access to a data. vehicle or restricted area. The HCS301 is meant to be Encryption Algorithm - A recipe whereby data is a cost-effective yet secure solution to such systems, scrambled using a crypt key. The data can only be requiring very few external components (Figure 2-1). interpreted by the respective decryption algorithm Most low-end keyless entry transmitters are given a using the same crypt key. fixed identification code that is transmitted every time a Decoder - A device that decodes data received button is pushed. The number of unique identification from an encoder. codes in a low-end system is usually a relatively small Decryption algorithm - A recipe whereby data number. These shortcomings provide an opportunity scrambled by an encryption algorithm can be for a sophisticated thief to create a device that grabs unscrambled using the same crypt key. a transmission and retransmits it later, or a device that quickly scans all possible identification codes until the correct one is found. The HCS301, on the other hand, employs the KEELOQ code hopping technology coupled with a transmission length of 66 bits to virtually eliminate the use of code grabbing or code scanning. The high security level of the HCS301 is based on the patented KEELOQ technol- ogy. A block cipher based on a block length of 32 bits and a key length of 64 bits is used. The algorithm obscures the information in such a way that even if the transmission information (before coding) differs by only one bit from that of the previous transmission, the next DS21143B-page 2 2001 Microchip Technology Inc.

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