What is difference between HC and HCT logic?
The only difference between HCT and HC is the input voltage levels.
What is HC logic?
Compatible CMOS Logic Of course, the letters HC designate high speed CMOS with the same pinouts and functions as the 54LS/74LS se- ries. The sub-family of HC, called HCT, is nearly identical to HC with the exception that its input levels are compatible with TTL logic levels.
What is HCT in CMOS?
HCT stands for high-speed CMOS with transistor–transistor logic voltages. These devices are similar to the HCMOS types except they will operate at standard TTL power supply voltages and logic input levels. This allows for direct pin-to-pin compatible CMOS replacements to reduce power consumption without loss of speed.
What is HC logic family?
The high-speed CMOS HC(T) logic family offers the broadest range of functions in the industry. Nexperia’s provides HC products for use in 2.0 V to 6.0 V CMOS applications and HCT products for use in 4.5 V to 5.5 V TTL applications. HC(T) logic devices are specified over 2.0 V to 6.0 V.
What is IOH and IOL?
IOL = Current Output Low. IOH = Current Output High. Those are the currents when output of the digital device is low or high. That much current can be sourced or sinked by the device.
What is the difference between CMOS and TTL?
CMOS stands for Complimentary Metal-oxide Semicodictor while in TTL stand for Transistor-Transistor Logic. CMOS circuit uses a field-effect transistor by connecting NMOS and PMOS, the TTL circuit uses bipolar junction transistor. The design of the CMOS can be considered to be very simpler as compared to the TTL.
What is TTL and CMOS?
CMOS stands for complementary metal-oxide-semiconductor is also another classification of ICs that uses the Filed effect transistor in the design. TTL stands for Transistor transistor logic. It is a classification of integrated circuits.
What is TTL and ECL?
TTL (Transistor Transistor Logic) IC technology uses bipolar transistor as principal circuit element. ECL (Emitter Coupled Logic) IC technology uses bipolar transistors configured as differential amplifier.
What is hematocrit?
Hematocrit (HCT) is the calculated volume percentage of red blood cells (erythrocytes) in your blood. Hematocrit is also called packed cell volume (PCV) or erythrocyte volume fraction. Human blood contains red blood cells, white blood cells, and platelets suspended in a liquid called plasma.
What is difference between 74LS and 74HC?
difference between 74ls 74hc The 74LS is Transistor to Transistor logic. Uses Shottky transistors to reduce the stored charge and get higher switching speeds then with conventional bipolar transistors. The 74HC uses MOSFET technology. Therefore can operate with wider variety of voltages.
Which logic family is fastest?
Emitter-coupled logic (ECL)
Emitter-coupled logic (ECL) is a BJT-based logic family which is generally considered as the fastest logic available.
Which logic family has very good noise immunity?
Which of the following logic families has the highest noise immunity?…Exercise :: Digital Computer Electronics – Section 1.
| A. | RTL |
|---|---|
| B. | DTL |
| C. | TTL |
| D. | HTL |
| E. | None of the above |
What kind of logic devices are in HC ( T )?
HC (T) logic devices are specified over 2.0 V to 6.0 V. With a balanced output drive of 8 mA and typical propagation delay of 9ns, the HC (T) family includes buffers/line drivers, transceivers, gates, shift registers, analog switches and multiple MSI devices.
Can You Mix AC, ACT, HCT and AHC?
If they are all running on 5V, you can freely mix AC, ACT, HC and HCT. The ‘C’ means CMOS, all these parts have a GND-Rail output swing. The ‘T’ means TTL compatible inputs, that is 0-0.8V = lo, 2V to Rail = hi. This range means they can also be driven with a CMOS rail to rail swing as well.
Which is faster AHC or HCT or AHCT?
The families differ by speed AHC is faster than HC. HCT and AHCT are TTL compatible and HC and AHC are CMOS: Source: http://www.ti.com/lit/sg/sdyu001ab/sdyu001ab.pdf
How are TTL logic levels different from CMOS logic levels?
TTL logic levels are different from those of CMOS – generally a TTL output does not rise high enough to be reliably recognized as a logic 1 by a CMOS input. This problem was solved by the invention of the 74HCT family of devices that uses CMOS technology but TTL input logic levels.