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SHC2242 (Compatible SLE5542)


SHC2242 is compatible with SLE5542. The function is absolutely same! The great advantage is the rather competitive price! Moreover, we are the main distributor of Belling! So we nearly have ten million sale volume every year!

General Description:

BL7442 is a IC Card chip (module) made by 1.2 mCMOS EERPOM process. It has 256 byte EEPROM with logical encryption and function. It can be operated at low voltage.

Technical Features:

  • 256 x 8 bit EEPROM organization
  • Byte-wise addressing
  • Irreversible byte-wise write protection of lowest 32 addresses (Byte 0 ……31)
  • 32 x1 bit organization of protection memory
  • Two-wire link protocol
  • End of processing indicated at data output
  • Answer-to-Reset according to ISO standard 7816-3(B type)
  • EEPROM programming time 2.5 ms per byte for both Erasing and writing
  • Minimum of 100,000 write/erase cycles
  • Data retention time :>10 years
  • Contacts configuration and serial interface according to ISO 7816 standard (synchronous transmission)

Ordering Information

Delivery Terms

  • Samples: It’s free of charge and could be sent within 1-2 working days.
  • <10K pcs: Within 1-2 working days
  • <100K pcs: Within 2-3 working days
  • <1KK pcs: Within 15 working days.
  • >1KK pcs: On request

Payment Terms

  • TT in advance or LC
  • Others on requested

Why buy from us ?

  • Reply you within 12 hours at most time
  • Unsurpassable competitive price
  • Large quantity inventory always
  • No MAQ’s limit for BL7442 chips
  • Strong at customization on request
  • Experience and expertise
  • Fast delivery and strong package
View Package!

Contact Us

Shanghai RealSmart Technologies Co., Ltd.

R201, Bldg E, No. 50, Lane 2080 Lianhua Rd, Minhang Dist, Shanghai 201103, China

Tel: +86 21 6432 6941

Fax: +86 21 6432 6942


Tel: +86 21 6432 6941