82C79 Datasheet

Transistors (BJT) - Single


The 82C79 is a programmable keyboard/display interface. The keyboard portion can provide a scanned interface up to 64-contact key matrix. Also, the keyboard portion can interface to an array of sensors or a strobed interface keyboard. Key depressions can be 2-key lockout or N-key rollover.The display portion has 16 x 8 bits display RAM which can be treated as dual 16 X 4 bits.Both right entry and left entry display formats are possible. 82C79 Features • Simultaneous Keyboard Display operation.• Scanned Keyboard mode.• Scanned Sensor matrix mode.• Strobed Input Entry mode.• Built-in 8-Character FIFO or 64 bit Sensor RAM.• Programmable 2-key Lockout or N-key Rollover with contact debounce.• Built-in 16 X 8bit Display RAM• Programmable scan timing.• Extend operating temperature range -40 0C to + 85 0C.


[{"Name":"Current - Collector (Ic) (Max) ","Value":"500mA"},{"Name":"Voltage - Collector Emitter Breakdown (Max)","Value":"300V"},{"Name":"Vce Saturation (Max) @ Ib, Ic","Value":"500mV @ 2mA, 20mA"},{"Name":"DC Current Gain (hFE) (Min) @ Ic, Vce","Value":"40 @ 30mA, 10V"},{"Name":"Power - Max","Value":"625mW"},{"Name":"Frequency - Transition","Value":"50MHz"},{"Name":"Package / Case","Value":"TO-226-3, TO-92-3 (TO-226AA) Formed Leads"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information


Littelfuse (NASDAQ: LFUS) - As the worldwide leader in circuit protection, Littelfuse offers POWR-GARD®, Teccor®, Wickmann®, Pudenz®, Hamlin®, PulseGuard® and SIDACtor® branded products, with a wide range of technologies such as Fuses and Accessories, PTCs, GDTs, Varistors, Polymer ESD Suppressors, Surge Protection Modules, TVS Diodes, TVS Diode Arrays (SPA® Diodes), Switching Thyristors, Power Modules, LED Protector, SIDACtor® Protection Thyristor as well as reed switches, relays and Hall Effect sensors. Littelfuse products are backed by more than 88 years of technology innovation, industry leading technical support, design and manufacturing expertise. Littelfuse products are vital components in virtually every product that uses electrical energy, including automobiles, computers, consumer electronics, handheld devices, industrial equipment, and telecom/datacom circuits

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