The 74139 decodes two binary weighted address inputs (nA0, nA1) to four mutually exclusive outputs (nY0 to nY3). Each decoder features an enable input (nE). When nE is HIGH all outputs are forced HIGH. The enable input can be used as the data input for a 1-to-4 demultiplexer application. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of? VCC.
سمات
? Input levels:
? For 74HC139: CMOS level
? For 74HCT139: TTL level
? Demultiplexing capability
? 2 independent 2-to-4 decoders
? Multifunction capability
? Suitable for memory decoding, data routing or code conversion
؟ يتوافق مع معيار JEDEC رقم. 7 أ
? Active LOW mutually exclusive outputs
؟ حماية البيئة والتنمية المستدامة:
؟ HBM JESD22-A114F يتجاوز 2000 فولت
؟ MM JESD22-A115-A يتجاوز 200 فولت
؟ خيارات حزمة متعددة
? Specified from ?40 ?C to 85 ?C and from ?40 ?C to 125 ?C
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