DTMF Decoder - GL Decodes DTMF audio signal to 4 bit binary TTL level output with LED indication. It also indicates outputs with LED. Can be used directly with microcontrollers to develop various DTMF related applications like remote monitoring, remote control, Caller ID, Auto Dialer, Remote Triggering etc. read more : DTMF DECODER: MADE IN INDIA Applications: Remote Control systems. Caller ID applications. FM receiver-based remote control. Remote control using a Mobile phone.

Dual 1-of-4 Line Data Selector/Multiplexer IC - 74HC153 The 74HC Series 74HC153 IC's data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the AND-OR-invert gates. Separate strobe inputs are provided for each of the two four-line sections. The 74HC153 features independent enable inputs (n E ) and common data select inputs (S0 and S1). For each multiplexer, the select inputs select one of the four binary inputs and routes it to the multiplexer output (nY). A HIGH on E forces the corresponding multiplexer outputs LOW. Inputs include clamp diodes Pinout: Pinout Of 74HC153 IC

Dual 2-to-4 line Decoder/Demultiplexer IC - 74HC139 The 74HC Series 74HC139 comprises two separate two-line-to-four-line decoders in a single package. The active-low enable input can be used as a data line in demultiplexing applications. All of these decoders/demultiplexers feature fully buffered inputs, presenting only one normalized load to its driving circuit. All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and simplify system design. These Schottky-clamped circuits are designed to be used in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When used with high-speed memories, the delay times of these decoders are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoder is negligible. Pinout: Pinout Of 74HC139 IC Symbol Pin Description 1E, 2E 1, 15 enable input (active LOW) 1A0, 1A1 2, 3 address input 1Y0, 1Y1, 1Y2, 1Y3 4, 5, 6, 7 output (active LOW) GND 8 ground (0 V) 2Y0, 2Y1, 2Y2, 2Y3 12, 11, 10, 9 output (active LOW) 2A0, 2A1 14, 13 address input VCC 16 positive supply voltage Also check 4 Bit D-Latch 74LS75 IC . It's a small, 16-pin integrated circuit (IC) chip that stores 4 bits of digital data. It's commonly used in digital circuits for data storage, timing control, and logic functions.

Dual 4 Input AND Gate IC - CD4082 CD4082 belongs to the CD4XXX IC series. This CD4082 is designed as a monolithic Dual 4 Input AND Gate designed by implementing the complementary MOS technology, integrated with P and N-type enhancement mode transistors.   The CD4082 IC operates at a wide range of working voltage and a wide range of working conditions. And directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it quite easy to function with other TTL devices and microcontrollers. The CD4x Series CD4082 offers features such as ESD barring and high noise immunity. Each output is protected against static damage by using clamping diodes. CD4081 Operates at a supply voltage of range between 3V to 15V. This IC is designed for operation over the full military temperature range of 0°C to 70°C. The IC CD4082 comes as smaller in size and offers much faster speed which makes it highly reliable in every kind of device. CD4082 IC can be soldered directly to the circuit board or easily mounted on a 14-pin IC base. The CD4082 is manufactured in 14-lead hermetic dual-in-line ceramic packages (F3A suffix), 14-lead dual-in-line plastic packages (E suffix), 14-lead small-outline packages (M, MT, M96, and NSR suffixes), and 14-lead thin shrink small-outline packages (PW and PWR suffixes). The AND gate is designed as a basic digital logic gate that implements logical conjunction.  An AND gate operates on logical multiplication rules. If all the inputs to the AND gate are HIGH, then the output will be high. If none or not all inputs to the AND gate are HIGH,  results in LOW output. check out : Dual 4 Input NAND Gate IC - CD4012 Pinout: Pinout Of CD4082 IC Application: Measurement of frequency Enable gate and Inhibit gate

Dual 4 Input NAND Gate IC - CD4012 The CD4x Series CD4012 belongs to the CD4000 IC series. This CD4012 was designed as a monolithic 4-input NAND gate IC designed by implementing the complementary MOS technology, integrated with P and N-type enhancement mode transistors. As a result, provide a symmetrical circuit with output swings essentially equal to the supply voltage. CD4012 is manufactured in a 14-lead dual-in-line plastic or ceramic package and plastic micro package. The CD4012 IC operates at a wide range of working voltage, and a wide range of working conditions. And directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it quite easy to function with other TTL devices and microcontrollers. Moreover, CD4012  features ESD barring and high noise immunity. Each output is protected against static damage by using clamping diodes. CD4012 Operates at a supply voltage of range between 3V to 20V. This IC is designed for operation over the full military temperature range of 0°C to 70°C. CD4012 Dual 4 Input NAND Gate IC feature a Propagation Delay Time of Max 250ns and Power Dissipation of  250mW. NAND gate is defined as a digital logic gate most commonly used in DLD applications. It is also sometimes referred to as a universal logic gate and used to implement any logic gate or expression in existence. In case, if any one of the inputs to the NAND gate switch to high, the output of the gate will always be logical low. On the other hand, a NAND gate yields a logical high only when all of its inputs are set to LOW. check out : Dual 4 Input AND Gate IC - CD4082 Pinout: Pinout of CD4012 IC Application Automotive Alarm system Data terminals Industrial controls Instrumentation Remote metering Medical Electronics Computers

Dual 4-bit Binary Ripple Counter IC - 74HC393 The 74HC Series 74HC393 is a 14 Pin Dual 4-bit Binary Ripple Counter IC having 2V to 6V Operating Voltage range and 50 Mhz Clock Frequency. Each counter features a clock input (nCP), an overriding asynchronous master reset input (nMR), and 4 buffered parallel outputs (nQ0 to nQ3). The counter advances on the HIGH-to-LOW transition of nCP. A HIGH on nMR clears the counter stages and forces the outputs LOW, independent of the state of nCP. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. check out : Dual 4-bit Decade Ripple Counter IC - 74HC390 Pinout: Pinout Of 74HC393 IC

Dual 4-bit Decade Ripple Counter IC - 74HC390 The 74HC Series 74HC390 IC is a 16 Pin Dual 4-bit Decade Ripple Counter IC having a 2V to 6V Operating Voltage range. It has been divided into four separately clocked sections. The counters have two divide-by-2 sections and two divide-by-5 sections. These sections share an asynchronous master reset input (nMR) and can be used in a BCD decade or bi-quinary configuration. If master reset inputs 1MR and 2MR are used to clear all 8 bits of the counter simultaneously, numerous counting configurations are possible within one package. Section clocks nCP0 and nCP1, allow ripple counter or frequency division applications of divide-by-2, 4, 5, 10, 20, 25, 50 or 100. The HIGH-to-LOW transition of the clock inputs nCP0 and nCP1 triggers each section. For BCD decade operation, the nQ0 output is connected to the nCP1 input of the divide-by-5 section. For bi-quinary decade operation, the nQ3 output is connected to the nCP0 input and nQ0 becomes the decade output. A HIGH on the nMR input overrides the clocks and sets the four outputs LOW. Inputs include clamp diodes. It enables the use of current-limiting resistors to interface inputs to voltages in excess of VCC. Pinout: Pinout Of 74HC390 IC Symbol Pin Description 1CP0, 2CP0 1, 15 Clock input divide-by-2 section (HIGH-to-LOW; edge-triggered) 1MR, 2MR 2, 14 Asynchronous master reset input (active HIGH) 1Q0, 1Q1, 1Q2, 1Q3 3, 5, 6, 7 Flip-flop outputs 1CP1, 2CP1 4, 12 Clock input divide-by-5 section (HIGH-to-LOW; edge-triggered) GND 8 Ground (0 V) 2Q0, 2Q1, 2Q2, 2Q3 13, 11, 10, 9 Flip-flop output VCC 16 Supply voltage

Dual 4-input AND Gate IC - 74HC21 The 74HC Series 74HC21 contains two independent 4-input AND gates. The 74HC21 is characterized for operation from 0 °C  to 70 °C. The 74HC21 features is a package Options include Plastic "small outline" packages, ceramic chips carriers and flat packages and plastic and ceramic DIPs. Pinout: Pinout Of 74HC21 IC

Dual 4-Input OR Gate IC - CD4072 The CD4072 Dual 4-Input OR gates IC provides the system designer with direct implementation of the positive-logic OR function and supplements the existing family of CMOS gates. The CD4x Series CD4072 types are supplied in 14-lead hermetic dual-in-line ceramic packages (F3A suffix), 14-lead dual-in-line plastic packages (E suffix), 14-lead small-outline packages (M, MT, M96, and NSR suffixes), and 14-lead thin shrink small-outline packages (PW and PWR suffixes). check out : CD40106 - Hex Schmitt Trigger Inverter IC Pinout: Pinout of CD4072 Dual 4-Input OR gates IC

Dual Complementary Pair with Inverter IC - CD4007 The CD4007 IC is comprised of three n-channel and three p-channel enhancement-type MOS transistors. The transistor elements are accessible through the package terminals to provide a convenient means for constructing the various typical circuits. More complex functions are possible using multiple packages. Numbers shown in parentheses indicate terminals that are connected together to form the various configurations listed. The CD4007 Dual Complementary IC types are supplied in 14-lead hermetic dual-in-line ceramic packages (F3A suffix), 14-lead dual-in-line plastic packages (E suffix), 14-lead small-outline packages (M, MT, M96, and NSR suffixes), and 14-lead thin shrink small-outline packages (PW and PWR suffixes). Applications: Extremely high-input impedance amplifiers Shapers Inverters Threshold detector Linear amplifiers Crystal oscillators