• Low Voltage and Standard-Voltage Operation
• 2-wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bi-directional Data Transfer Protocol
• 100kHz and 400kHz Compatibility
• Write Protect Pin for Hardware Data Protection
• 8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes
• Partial Page Writes are Allowed
• Self-timed Write Cycle (10mS max)

The 4N25 is an optocoupler for general purpose applications. It contains a light emitting diode optically coupled to a photo-transistor.

The 7408 is a QUAD 2-Input AND gates and contains four independent gates each of which performs the logic AND function. It comes in 14-pin DIP package. 7408 AND Gate IC 74HC244 74244 Octal Buffers & Line Driver IC in Pakistan

The 74LS373 consists of eight latches with 3-state outputs for bus organized system applications. The flip-flops appear transparent to the data.

74HC540 is a 20 Pin Octal 3-state Inverting Buffer IC having 2V to 6V Operating Voltage range with 6mA output current. The 3-STATE buffers utilize advanced silicon-gate CMOS technology. They possess high drive current outputs which enable high speed operation even when driving large bus capacitances.

• High Speed Binary Ripple Carry Counter
• Separate Reset Input Pin
• Wide Operating Voltage Range: 2.0 to 6.0 V
• Output Drive up to 10 LS-TTL Loads
• Equivalent to CD4060

• Input levels: CMOS level
• 16-line demultiplexing capability
• Decodes 4 binary-coded inputs into 16 mutually-exclusive outputs
• Complies with JEDEC standard no. 7 A
• ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200V
• Multiple package options
• Specified from -40C to +85C and -40C to +125C

• Dual Input IC with 4 OR Gates with an operating voltage range from 3V to 18V
• Fully Static and Medium Speed Operation: with tPHL, tPLH = 60ns (typ) at 10V
• DC input current: 10mA
• High-Voltage Type (20V Rating)
• Power Dissipation: 500mW
• Maximum propagation delay is 250ns.
• Standard symmetric output
• Minimum logic Low and High voltage @+5V is1.5V and 3.5V
• Maximum Transition Time is 200ns

BT134 Triac – 600V – 4A (BT134-600E) Triac they are used in AC switching and control applications with current ratings from under 1A to 40A rms. Since TRIACs are bi-directional switching devices they are commonly used for switching AC applications. It has Maximum Terminal current: 4A, Max Terminal Voltage is 600 V, Gate trigger current: 25mA & On-state Gate voltage: 1.7V.

• Maximum Terminal current: 4A
• On-state Gate voltage: 1.4V
• Gate trigger current: 10mA
• Max Terminal Voltage is 600 V
• Holding current: 2.2mA
• Latching current: 4mA
• Available in To-220 Package

The BT139 is a TRIAC thyristor, which is a type of semiconductor device that can use to control alternating current (AC) power. TRIAC thyristor BT139 is a four-quadrant device, meaning that it can conduct current in either direction. The BT139 has a peak inverse voltage (PIV) of 800 volts and a current rating of 16 amperes. It is a sensitive gate triac, meaning that it can be triggered with a low gate current. The on-state voltage drop of the BT139 is 1.2 volts. Here are some of the key features of the BT139-800E 4 Quadrant TRIAC:

• Peak inverse voltage (PIV): 800 V
• RMS current: 16 A
• Gate trigger current: 2.5 mA
• Gate trigger voltage: 1.4 V
• On-state voltage drop: 1.2 V
• Thermal resistance: 1.2 K/W (junction to mounting base)
• Operating temperature range: -40 to 125 °C

• Wide supply voltage range 3.0V to 15V
• Low power 10 nW (typ.)
• High noise immunity 0.45 VDD (typ.)
• Buffered Inputs and Outputs
• Standard Symmetrical Output Characteristics
• 100% Tested for Maximum Quiescent Current at 20V
• 5V, 10V and 15V Parametric Ratings
• Maximum Input Current of 1A at 18V Over Full Package-Temperature Range; 100nA at 18V and +25oC

• Dual inputQuad NAND gate operation.
• Input voltage range: -0.5 to VDD +5V
• Power dissipation of 100mW per logic change.
• It is available in different outline packages
• The propagation delay time is 60ns
• All input and output pins are buffered for high throughput
• The output characteristics are standardized symmetric
• CD4011 draws a maximum input current of 1 Ampere at 18 volts
• Offers different noise margin level according to the input voltage level
• Temperature operating range is -55C to +125C

• Asynchronous Set-Reset Capability
• Static Flip-Flop Operation
• Medium-Speed Operation: 16 MHz (Typical) Clock Toggle Rate at 10-V Supply
• Standardized Symmetrical Output Characteristics
• Maximum Input Current Of 1- A at 18 V Over Full Package Temperature Range:
  • 100 nA at 18 V and 25C
• Noise Margin (Over Full Package Temperature Range):
  • 1 V at VDD = 5 V
  • 2 V at VDD = 10 V
  • 2.5 V at VDD = 15 V

• The supply voltage of IC 4017 ranges from 3V to 15V, usually +5V
• This IC is well-matched with Transistor-Transistor Logic or TTL.
• The operational speed/CLK speed of this IC is 5 MHz.
• It provides support to10 outputs that are decoded.
• It is available in different packages like 16-pin GDIP, PDIP & PDSO
• Input high time 30 ns
• Output current is 10 mA
• Noise immunity is high typically 0.45 VDD
• Operation is completely static
• Low power like 10 W
• Speed operation is medium like 5.0 MHz with 10V VDD
• Input Voltage or Vin ranges from 0.5 VDC to VDD +0.5 VDC
• TS or Storage Temperature ranges from 65C to +150C
• VDD or DC Supply Voltage ranges from 0.5 VDC to +18 VDC
• PD or Power Dissipation is Dual-In-Line is 700 mW
• TL or Lead Temperature is 260C

• CD4027 Dual JK Flip Flop Package IC which operates at medium speed of 16 MHz typically with 10V supply
• Voltage range of 3.0V to 15V
• Static Flip-Flop Operation
• High noise immunity of 0.45 VDD(typ.)
• Set and Reset capability
• TTL compatible
• Low power of 50 nW (typ.)
• Input Rise/Fall time at 5V: 45us
• Maximum and minimum Input Voltage is 2 V and 0.8 V

The Exclusive OR gates are monolithic complementary MOS (CMOS) integrated circuits constructed with N-Channel and P-Channel enhancement mode transistors. All inputs are protected against static discharge with diodes to VDD and VSS.

The CD4040 is a 12-stage ripple carry binary counter. The counters are advanced one count on the negative transition of each clock pulse. The counters are reset to the zero state by a logical 1 at the reset input independent of the clock.

The CD4050 hex buffers are monolithic complementary MOS (CMOS) integrated circuits constructed with N- and P-channel enhancement mode transistors. These devices feature logic level conversion using only one supply voltage (VDD). The input signal high level (VIH) can exceed the VDD supply voltage when these devices are used for logic level conversions. These devices are intended for use as hex buffers, CMOS to DTL/ TTL converters, or as CMOS current drivers, and at VDD = 5.0V, they can drive directly two DTL/TTL loads over the full operating temperature range.

• Wide range of digital and analog signal levels: digital 3 – 15V, analog to 15Vp-p
• Low “ON” resistance: 80Ω (typ.) over entire 15Vp-p
  • signal-input range for VDD − VEE = 15V
• High “OFF” resistance:
  • channel leakage of ±10 pA (typ.) at VDD − VEE = 10V
• Logic level conversion for digital addressing signals of
  • 3 – 15V (VDD − VSS = 3 – 15V) to switch analog signals
  • to 15 Vp-p (VDD − VEE = 15V)
• Binary address decoding on chip

The 4077 is a quad 2-input EXCLUSIVE-NOR gate. The outputs are fully buffered for the highest noise immunity and pattern insensitivity to output impedance. The 4077 operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.

The CD4081 quad gate is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement mode transistors. They have equal source and sink current capabilities and conform to standard B series output drive. The devices also have buffered outputs which improve transfer characteristics by providing very high gain. All inputs protected against static discharge with diodes to VDD and VSS.

1. Operating Voltage: 5V, 10V, 15V DC
2. Maximum Input Current: 1uA
3. Hysteresis Voltage Typically 0.9 V at VDD: 5 V and 2.3 V at VDD: 10 V
4. Noise Immunity Greater Than 50%
5. Unlimited input rise and fall times

• High Voltage Type (20V Rating)
• 3-State Parallel Outputs for Connection to Common Bus
• Separate Serial Outputs Synchronous to Both Positive and Negative Clock Edges for Cascading
• Medium Speed Operation – 5MHz at 10V (typ)
• Quiescent Current at 20V
• Maximum Input Current of 1A at 18V Over Full Package Temperature Range; 100nA at 18V and +25oC
• Noise Margin (Over Full Package/Temperature Range) – 1V at VDD = 5V – 2V at VDD = 10V – 2.5V at VDD = 15V
• 5V, 10V and 15V Parametric Ratings

The DS1307 serial real-time clock (RTC) is a lowpower, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.

LM324 Operational Amplifier IC LM-324 consist of four independent high-gain frequency-compensated operational amplifiers that are designed specifically to operate from a single supply or split supply over a wide range of voltages. Wide Supply Ranges Single Supply: 3 V to 32 V (26 V for LM2902) Dual Supplies: 1.5 V to 16 V (13 V for LM2902) Low Supply-Current Drain.

It is an integrated circuit that converts the signals from the RS232 serial port to the proper signal which is used in the TTL compatible digital logic circuits. The MAX232 can convert the signals like RX, TX, CTS, and RTS and it is a dual driver/receiver.

This device is designed for use where the output voltage is a product of an input voltage (signal) and a switching function (carrier). Typical applications include suppressed carrier and amplitude modulation, synchronous detection, FM detection, phase detection, and chopper applications.

The MC34063A Series is a monolithic control circuit containing the primary functions required for dc-to-dc converters. These Buck Boost Inverting Switching Regulators consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. Operation from 3.0 V to 40 V Input. Output Switch Current to 1.5 A.

This IC is a 16-Bit SPI I/O Expander with Serial Interface. This IC has 25mA sink/source capability per I/O.

Optocoupler 817 QUAD contains an IRED optically coupled to a phototransistor. It is packaged in a 4pin DIP, available in wide-lead spacing option and SMT gullwing lead-form option. Input-output isolation voltage(rms) is 5.0kV. Collector-emitter voltage is 80V(*) and CTR is 50% to 600% at input current of 5mA.

• Microcontrollers I/O switching
• VoIP phones
• Signal isolation
• PC communications

• Low-voltage and Standard-voltage Operation
  • 2.7 (VCC = 2.7V to 5.5V)
  • 1.8 (VCC = 1.8V to 5.5V)
• Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K),
• 1024 x 8 (8K) or 2048 x 8 (16K)
• Two-wire Serial Interface
• Schmitt Trigger, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• 100 kHz (1.8V) and 400 kHz (2.7V, 5V) Compatibility
• Write Protect Pin for Hardware Data Protection
• 8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes
• Partial Page Writes Allowed
• Self-timed Write Cycle (5 ms max)
• High-reliability
  • Endurance: 1 Million Write Cycles
  • Data Retention: 100 Years
• Automotive Devices Available
• 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2×3), 5-lead SOT23, 8-lead TSSOP and 8-ball dBGA2 Packages
• Die Sales: Wafer Form, Waffle Pack and Bumped Wafers

• Carries Low input bias current = 50 pA
• Available with Low input noise current = 0.01 pA/Hz
• Comes with Fast settling time to 0.01% = 2us
• Contains internally trimmed offset voltage = 15 mV
• Carries Low input noise voltage = 16nV/Hz
• Exhibits Low supply current = 3.6 mA

• Input Offset Voltage Options of 6.0 mV and 15 mV Max
• Low Input Bias Current: 30 pA
• Low Input Offset Current: 5.0 pA
• Wide Gain Bandwidth: 4.0 MHz
• High Slew Rate: 13 V/s
• Low Supply Current: 1.4 mA per Amplifier
• High Input Impedance: 1012

The TL431 is three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.2 .

The TL494 device incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. The TL494 device contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.The TL494C device is characterized for operation from 0C to 70C. The TL494I device is characterized for operation from 40C to 85C.