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HCF40108BEY 数据表(PDF) 1 Page - STMicroelectronics |
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HCF40108BEY 数据表(HTML) 1 Page - STMicroelectronics |
1 / 14 page HCC40108B HCF40108B September 1988 4 x 4 MULTIPORT REGISTER EY (Plastic Package) DESCRIPTION ORDER CODES : HCC40108BF HCF40108BM1 HCF40108BEY HCF40108BC1 F (Ceramic Package) M1 (Micro Package) C1 (Chip Carrier) PIN CONNECTIONS The HCC40108B (extended temperature range) and HCF40108B (intermediate temperature range) are monolithic integrated circuits, available in 24 lead dual in line plastic or ceramic packageand plas- tic micropackage. The HCC/HCF40108B is a 4 X 4 multiport register containing four 4-bit register, write address decoder, two separate read address decoders, and two 3-state output buses. When the ENABLE input is low, the corresponding output bus is switched, independently of the clock, to a high im- pedance state. The high impedance third state pro- vides the outputs with the capability of being connected to the bus lines in a bus organized sys- tem without the need for interface or pull-up compo- nents. When the WRITE ENABLE input is high, all data input lines are latched on the positive transition of the CLOCK and the data is entered into the word selected by the write address lines. When WRITE ENABLE is low, the CLOCK is inhibited and . FOUR 4-BIT REGISTERS . ONE INPUT AND TWO OUTPUT BUSES . UNLIMITED EXPANSION IN BIT AND WORD DIRECTION . DATA LINES HAVE LATCHED INPUTS . 3-STATE OUTPUTS . SEPARATE CONTROL OF EACH BUS, ALLOWING SIMULTANEOUS INDEPENDET READING AND ANY OF FOUR REGISTERS ON BUS A AND BUS B AND INDEPENDENT WRITING INTO ANY ANY OF THE FOUR REG- ISTERS . 40108B IS PIN COMPATIBLE WITH INDUSTRY TYPE MC14580 . STANDARDIZED, SYMMETRICAL OUTPUT CHARACTERISTICS . QUIESCENT CURRENT SPECIFIED AT 20V FOR HCC DEVICE . 5V, 10V AND 15V PARAMETRIC RATINGS . INPUT CURRENTOF 100 nA AT 18V AND 25oC FOR HCC DEVICE . 100% TESTED FOR QUIESCENT CURRENT . MEETS ALL REQUIREMENTS OF JEDEC TEN- TATIVE STANDARD No 13a, ”STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES” no new data is netered. In either case, the contents of any word may be accessed via the read address lines independent of the state of the CLOCK input. 1/14 |
类似零件编号 - HCF40108BEY |
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类似说明 - HCF40108BEY |
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