Which counter IC can be used to design presettable counter?
Synchronous Up/Down-Counter ICs The 74193 is a 4-bit binary up/down synchronous counter. These chips also have parallel data input leads that can be used to preset the counter.
Which IC is used for decoder 74ls?
74LS138 – 3 to 8 Decoder De-Multiplexer IC The 74LS138 is a 3:8 Decoder IC that is commonly used in decoding or de-multiplexing circuits for memory decoding or data routing purposes. It is designed for high-speed operations and has three enable pins to make it easier to cascade with other ICs.
Which is quadrature decoder / counter interface ICs features?
Quadrature Decoder/Counter Interface ICs Technical Data HCTL-2000 HCTL-2016 HCTL-2020 Features • Interfaces Encoder to Microprocessor • 14 MHz Clock Operation • Full 4X Decode • High Noise Immunity: Schmitt Trigger Inputs Digital Noise Filter • 12 or 16-Bit Binary Up/ Down Counter • Latched Outputs • 8-Bit Tristate Interface
How is the Count of the decade counter decoded?
The count is decoded by the inputs of NAND gate X1 and X3. After count 10, the logic gate NAND will trigger its output from 1 to 0, and it resets all flip flops. The state diagram of Decade counter is given below. If we observe the decade counter circuit diagram, there are four stages in it, in which each stage has single flip flop in it.
Which is an example of a 2 to 4 line decoder?
For example, a 2-to-4-line decoder is shown in Fig. 4.4.5, in this circuit the two input lines can be set to any one of four binary values, 00, 01, 10 or 11. Resulting from this input, and provided that the (active high) Enable input is set to logic 1, the output line corresponding to the binary value at inputs A and B changes to logic 1.
What are problems with combinational logic ICs in encoders?
In using combinational logic ICs such as an encoder, problems like switch bounce and race hazards must be allowed for, and one ( though not necessarily the best) solution can be to temporarily make the ENABLE pin high during times when data is likely to change.