A high on either of the input enables forces the outputs high. This device is ideally suited for high speed bipolar memory chip select address decoding. Each decoder has an activelow enable input which can be used as a data input for a 4output. Dual 1of4 decoder demultiplexer the lsttlmsi sn74ls9 is a high speed dual 1of4 decoderdemultiplexer. General description the 74cbtlv3257 provides a quad 1 of2 highspeed multiplexerdemultiplexer with common select s and output enable oe inputs. A 1 to4 demultiplexer can easily be built from 1 to2 demultiplexers as follows. This device has two decoders with common 2bit address inputs and separate gated enable inputs. Limiting values 1 the input and output voltage ratings may be exceeded if the input and output current ratings are observed. The 1 to4 demultiplexer has 1 input bit, 2 control bit, and 4 output bits. The figure below shows the block diagram of a 1to2 demultiplexer with additional enable input.
Standard demultiplexer ic packages available are the ttl 74ls8 1 to 8output demultiplexer, the ttl 74ls9 dual 1 to 4 output demultiplexer or the cmos cd4514 1 to 16 output demultiplexer. An important notice at the end of this data sheet addresses availability, warranty, changes, use in safetycritical applications, intellectual property matters and other important disclaimers. Dual binary to 1of4 decoderdemultiplexer the mc14555b and mc14556b are constructed with complementary mos cmos enhancement mode devices. This board is useful for students to study and understand the operation of 4 to 1 line multiplexer and 1 to 4 line demultiplexer circuits and verify their truth tables. The enable input can be used as the data input for a 1to4 demultiplexer application. As an example, a device that passes one set of two signals among four signals is a twobit 1 to2 demultiplexer. Msi note to hct types the value of additional quiescent supply current. The m74hc154 is an high speed cmos 4 to 16 line decoder demultiplexer fabricated. And if the outputs are 8 in number it can be termed as 1.
We have already studied the equation in our previous article of multiplexer. Icc for a unit load of 1 is given in the family specifications. Standard demultiplexer ic packages available are the ttl 74ls8 1 to 8output demultiplexer, the ttl 74ls9 dual 1 to4 output demultiplexer or the cmos cd4514 1 to16 output demultiplexer. Gate cmos the mc74hc238a is identical in pinout to the ls238. Sn74lvc1g18 1 of2 noninverting demultiplexer with 3. A 1 to 4 demultiplexer has a single input d, two selection lines s1 and s0 and four outputs y0 to y3. Cd4052 datasheet pdf 1 page fairchild semiconductor. Types of decoder and a demultiplexer decoders are generally categorized into 2to4 decoders, 3to8 decoders, and 4to16 decoders. Features and benefits hef4555b dd, vss, or another input. The device features two input enable e0 and e1 inputs. Few types of demultiplexer are 1 to 2, 1 to 4, 1 to 8 and 1 to 16 demultiplexer. The 1 to 4 demultiplexer has 1 input bit, 2 control bit, and 4 output bits. Sn74cbtlv3257 lowvoltage 4bit 1of2 fet multiplexer.
It accepts three binary weighted address inputs a0, a1 and a2 and, when enabled, provides eight mutually exclusive outputs y0 to y7 that are low when selected. Consider a situation when you have a single source and you need to serve it to multiple users, in this case, we need demultiplexer. See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. The m74hc154 is an high speed cmos 4 to 16 line decoder demultiplexer fabricated with silicon gate c2mos technology. Epic is a trademark of texas instruments incorporated. Mc74ac9d mc74ac9, mc74act9 dual 1of4 decoderdemultiplexer the mc74ac974act9 is a high. This demultiplexer is also called as a 2 to 4 demultiplexer which means that two select lines and 4. Dual 2to4 line decoderdemultiplexer 74hchct9 dc characteristics for hct for the dc characteristics see 74hchcthcuhcmos logic family specifications. Inputs nan, ne to output nyn propagation delay and nyn output transition time. Multiplexer and demultiplexer circuits and apllications.
The device has two independent decoders, each accepting two inputs and providing four mutually. Dual 1of4 decoder demultiplexer general description the acact9 is a highspeed, dual 1of4 decoder demultiplexer. As an example, a device that passes one set of two signals among four signals is a twobit 1to2 demultiplexer. These devices have two decoders with common 2bit address inputs and separate gated enable inputs. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active low outputs. Cd4051bcn datasheet pdf 1 page fairchild semiconductor. Only one device marking contained in parentheses and separated by a will appear on a device. Each decoder has an active low enable input which can be used as a data input for a 4output demultiplexer. Each decoder demultiplexer has two select inputs a and b, an active low enable input e, and four mutually exclusive outputs q0, q1, q2. Scientech db10 multiplexer demultiplexer is a compact, ready to use experiment board for multiplexer and demultiplexer. The selected line decides which ip is connected to the op, and also increases the amount of data that can be sent over an nw within a certain time. Decoderdemultiplexer by tying ea to eb and relabeling the. General description the vsc8162 combines a clock recovery unit cru with a 1. Demultiplexer pin diagram understanding 1 to 4 demultiplexer.
The input data goes to any one of the four outputs at a given time for a particular combination of select lines. Features and benefits hef4555b dd, vss, or another. The device has two independent decoders, each accepting two inputs and providing four mutuallyexclusive activelow outputs. Dual 1of4 decoderdemultiplexer general description the acact9 is a highspeed, dual 1of4 decoder demultiplexer. The multiple input enables allow parallel expansion to a 1 of24 decoder using just three ls8 devices or to a 1 of32. Minor datasheet edits to separate out the descriptions of multiplexer and demultiplexer 1. A multiplexer or mux is a device that has many inputs and a single output. Sn74cbtlv3253 lowvoltage dual 1of4 fet multiplexer.
Thus, demultiplexers play a crucial role in the communication system. Nsc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The device has two independent decoders, each accepting twoinputs and providing four mutually exclusive active low outputs. Mc74hc9ad mc74hc9a dual 1of4 decoder demultiplexer high. Apr 15, 2019 74154 datasheet pdf 4line to 16line decoder demultiplexer, 74154 pdf, 74154 pinout, equivalent, 74154 schematic, dm74154, sn74154, ttl. Dual 2line to 4line decoderdemultiplexer datasheet rev. If the enable functions are satisfied, one output of each decoder will be low as selected by the address inputs. Demultiplexer pin diagram understanding 1 to4 demultiplexer. Philips semiconductors product specification 1 of8 decoderdemultiplexer 74als8 1996 jul 03 4 absolute maximum ratings operation beyond the limit set forth in this table may impair the useful life of the device. The device has two independent decoders, each accepting two. Demultiplexers combinational logic functions electronics. September 1993 5 philips semiconductors product speci.
Philips semiconductors product specification 1of8 decoderdemultiplexer 74f8 february 14, 1991 4 absolute maximum ratings operation beyond the limit set forth in this table may impair the useful life of the device. Cd4052bcmx datasheet, cd4052bcmx pdf, cd4052bcmx data sheet, cd4052bcmx manual, cd4052bcmx pdf, cd4052bcmx, datenblatt, electronics cd4052bcmx, alldatasheet, free. Dual 1of4 decoder demultiplexer the lsttlmsi sn5474ls9 is a high speed dual 1of4 decoderdemultiplexer. A 1to4 demultiplexer can easily be built from 1to2 demultiplexers as follows. Schottky barrier diode process for high speed and is completely compatible with all motorola ttl families.
The signal on the select line helps to switch the input to one of the two outputs. Gnd pins and the exposed center pad must be connected to supply ground for proper device. The hef4555b contains two 1of4 decodersdemultiplexers. Decoder a has an enable gate with one active high and one active low input. General description the 74lvc1g3157 provides one analog multiplexerdemultiplexer with one digital select input s, two independent inputsoutputs y0, y1 and a. Waveforms and test circuit 001aal114 nan, ne input nyn output 90 % 10 % tphl tplh tthl ttlh gnd vdd vm vm voh vol measurement points are given in table 9. Sn74ls155d sn74ls155 dual 1of4 decoder demultiplexer the sn54 74ls156 is a high speed dual 1of4 decoderdemultiplexer. Sn74lvc1g18 sces406l july 2002revised august 2019 sn74lvc1g18 1 of2 noninverting demultiplexer with 3state deselected output 1 1. Each decoder has an activelow enable input which can be used as a data input for a 4output demultiplexer.
Multiplexer and demultiplexer looks same when symbols are flipped. Hef4556bp datasheet24 pages philips dual 1of4 decoder. Cd4051 datasheet, cd4051 pdf, cd4051 data sheet, cd4051 manual, cd4051 pdf, cd4051, datenblatt, electronics cd4051, alldatasheet, free, datasheet, datasheets, data. The number of the output signal is always decided by the number of the control signal and vice versa. The device has two independent decoders, each accepting twoinputs and. A 1to2 demultiplexer consists of one input line, two output lines and one select line. Specify by appending the suffix letter x to the ordering code. Few types of demultiplexer are 1 to 2, 1 to4, 1 to8 and 1 to 16 demultiplexer.
For 16 mm tape width, order cbtl04083abs 9352 941 24518 518 indicates 16 mm wide carrier tape. If the output of the demultiplexer is 4 it can be termed as 1. Its circuit is or by expressing the circuit as shows that it could be two onebit 1 to2 demultiplexers without changing its expected behavior. Gate cmos the mc74hc9a is identical in pinout to the ls9. The 74act119 is composed of two individual 2line to 4line decoders in a. Motorola dual 1of4 decoder demultiplexer,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Sn74ls155d sn74ls155 dual 1of4 decoder demultiplexer the sn54 74ls156 is a high speed dual 1of4 decoder demultiplexer.
For detailed information see the relevant data sheet or data handbook. Fairchild does not recommend operation of fact circuits outside databook specifications. The hef4556b is a dual 1 of 4 decoder demultiplexer. The device inputs are compatible with standard cmos outputs. It decodes four binary weighted address inputs a0 to a3 to sixteen mutually exclusive outputs y0 to y15. Demultiplexers, on the other hand, are classified into 14 demultiplexers, 18 demultiplexers, and 116 demultiplexers. Mc74hc238ad mc74hc238a 1of8 decoder demultiplexer high.
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