HCMOS Hcmos Family Characteristics. GENERAL These family specifications cover the common electrical ratings and characteristics of the entire HCMOS. HCMOS (“high-speed CMOS”) is the set of specifications for electrical ratings and characteristics, forming the 74HC00 family, a part of the series of. the HCMOS data sheets are guaranteed when the circuits are tested according to the conditions stated in the chapter. ‘Family Characteristics’, section ‘Family.
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The software will choose the simple mode only when all outputs are dedicated combinatorial without OE control.
In simple mode all feedback paths of the output pins are routed via the adjacent pins. Compiler software will transparently set these architecture bits from the pin definitions, so the user should not need to directly manipulate these architecture bits.
All data pins are defined as a three-state type, controlled by the OE pin. VOH HIGH level output voltage; the range of voltages at an output terminal with a specified output loading and supply voltage. The information given on these architecture bits is only to give a characterisrics understanding of the device. VH Hysteresis voltage; difference between the trigger levels, when applying a positive and a negative-going input signal. IS Analog switch leakage current; the current flowing into an analog switch at a specified voltage across the switch and VCC.
These two global and 16 individual architecture bits define all possible configurations in a GAL16V8. The Data bus of the HT is designed as a tri-state type.
HCMOS family characteristics FAMILY SPECIFICATIONS
A read occurs during the overlap of a low CS and a high WE 2. In characterisrics so, the two inner most pins pins 15 and 16 will not have the feedback option as these pins are always configured as dedicated combinatorial output. Documents Flashcards Grammar checker. H stands for high level L stands for low level.
HCMOS – Wikipedia
CPD Power dissipation capacitance; the capacitance used to determine the dynamic power dissipation per logic function, when no extra load is provided to the device. When using compiler software to configure the device, the user must pay special attention to the following restrictions in each mode.
All brand or afmily names are trademarks or registered trademarks of their respective holders. Details of each of these modes are illustrated in the following pages. All combinatorial outputs with OE controlled by the product term will force the software to choose the complex mode. Because of this feedback path usage, pin 19 and pin 12 do not have the feedback option chmos this mode. CS Switch capacitance; the capacitance of a terminal to a switch of an chmos device.
The specifications and information herein are subject to change without notice. Negative current is defined as conventional current flow out of a device.
HCMOS family characteristics FAMILY SPECIFICATIONS
GND Supply voltage; for a device with a single negative power supply, the most negative power supply, used as the reference chaaracteristics for other voltages; typically ground. IIK Input diode current; the current flowing into a device at a specified input voltage.
In these families are included several HEB family circuits which do not have TTL counterparts, and some special circuits. Famliy requiring reversible operation must make the reversing decision while the activating clock is HIGH to avoid erroneous counts.
While in the read cycle, the WE pin is set to high and the Characteristicz pin is set to low to define the data pins as the output state. These device types are listed in the table below.
VOL LOW level output voltage; the range of voltages at an output terminal with a specified output loading and supply voltage. There are three global OLMC configuration modes possible: Multistage counters will not be fully synchronous, since there is a slight delay time difference added for each stage that is added. Functional operation of this device at these or any other conditions above those indicated in the operational sections of this specification is not implied and exposure to absolute maximum rating conditions for extended periods may affect device reliability.
It is operated from a power supply of 2 to 6 V. For further details, refer to the compiler software manuals. The family will have the same pin-out as the 74 series and provide the same circuit functions. Lab 9 in this note.
VCC Supply voltage; the most positive potential on the device. These pins cannot be configured as dedicated inputs in the registered characteristicw. Only one clock input can be held HIGH at any time, or erroneous operation will result.
Analog terms IOK Output diode current; the current flowing into a device at a specified output voltage. It is organized with words of 8 bits in length, and operates with a single 5V power characteirstics. For analog switches, e. IO Output source or sink current: