MPSA14 Darlington Transistor

512 bits Electrically Programmable Read Only Memory (EPROM) communicates with the economy of one signal plus ground

. Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike

. Built-in multidrop controller ensures compatibility with other MicroLAN products

. EPROM partitioned into two 256-bit pages for randomly accessing packetized data

. Each memory page can be permanently write-protected to prevent tampering

. Device is an “add-only” memory where additional data can be programmed into EPROM without disturbing existing data

. Architecture allows software to patch data by superseding an old page in favor of a newly programmed page

. Reduces control, address, data, power, and programming signals to a single data pin

. Directly connects to a single port pin of a microprocessor and communicates at up to 16.3 kbps

. 8-bit family code specifies DS2501 communications requirements to reader

• Type Designator: 2SC2331
• Material of transistor: Si
• Polarity: NPN
• Maximum collector power dissipation (Pc), W: 1
• Maximum collector-base voltage |Ucb|, V: 80
• Maximum collector-emitter voltage |Uce|, V: 60
• Maximum emitter-base voltage |Ueb|, V: 8
• Maximum collector current |Ic max|, A: 0.7
• Transition frequency (ft), MHz: 30
• Collector capacitance (Cc), pF: 8
• Forward current transfer ratio (hFE), min: 40
• Noise Figure, dB: –
• Package of 2SC2331 transistor: TO92