The MT8870D/MT8870D-1 is a complete DTMF receiver that integrates both the bandsplit filter and digital decoder functions. It uses switched capacitor techniques for high and low group filters and digital counting techniques to detect and decode all 16 DTMF tone pairs into a 4-bit code. The external component count is minimized by the on-chip provision of a differential input amplifier, clock oscillator, and latched three-state bus interface.

• Complies with JEDEC standard no. 7A
• CMOS input levels
• Synchronous reversible counting
• Asynchronous parallel load

Key Features of AUPO Square Thermal Fuse 135°C, 2A 250V

• High-temperature rating: 135°C
• Current capacity: 2A
• Voltage rating: 250V
• Reliable AUPO brand
• Compact square design

• 4K Memory, 512 x 8 bits
• Two-Wire Serial Interface
• Write Protect Pin for Hardware Data Protection
• Wide Supply Voltage 2.7V to 5.5V

The LM393 Dual Differential Comparator is designed for precision voltage comparison applications. It accepts two inputs for comparison, determining which voltage is higher. Key features include:

• Dual differential comparator
• Accurately compares two voltage inputs
• Exploits the principle of voltage comparison

• Output Current: Provides 1A output current for various applications.
• Fixed Output Voltage: Delivers a 15V fixed output voltage.
• Thermal Overload Protection: Features thermal overload protection for safe operation.

• 1K Memory, 128 x 8 bits or 64 x 16 bits
• Three-Wire Serial Interface
• Self-Timed ERASE and WRITE Cycles

• High-Performance Audio Amplifier: Designed for audio applications with high efficiency.
• Class D Technology: Provides efficient power conversion and low heat dissipation.
• Short-Circuit and Thermal Protection: Built-in safety features to protect against damage.

The 6N136 Optocoupler is a high-performance component designed for electrical isolation and signal transmission. With a voltage isolation of 2500Vrms and a current transfer ratio ranging from 19% to 50%, it ensures reliable performance. This optocoupler comes in an 8-DIP package for through hole mounting.

Key Features:

• Part NO.: 6N136V
• Package: 8-DIP (0.300, 7.62mm)
• Number of Channels: 1
• Input Type: DC
• Voltage - Isolation: 2500Vrms
• Current Transfer Ratio (Min): 19% @ 16mA
• Current Transfer Ratio (Max): 50% @ 16mA
• Voltage - Output: -0.5 ~ 20V
• Current - Output / Channel: 8mA
• Current - DC Forward (If): 25mA
• Mounting Type: Through Hole

Supplier: SICSTOCK

• Wide supply voltage range (4V to 36V) for versatile use.
• High output current per channel (40mA).
• Gain Bandwidth Product (GBP) of 4.5 MHz for efficient signal processing.
• Slew rate of 9 V/us for fast response times.

• Triple 3-input NAND gate for digital logic applications
• Operates at a typical voltage of 5V
• TTL-compatible for easy integration
• High-speed CMOS technology

• Zero-Crossing Detection: Provides zero-crossing detection for efficient switching.
• Optoisolator: Acts as an optical isolator to isolate the high-voltage side from the low-voltage side.
• Triac Driver: Specifically designed to drive Triac for AC load switching applications.

• Wide Supply Range: Operates from ±5-V to ±18-V supplies.
• Fast Acquisition Time: Less than 10-µs acquisition time.
• TTL/CMOS Compatible: Logic input is compatible with TTL, PMOS, CMOS.
• Low Hold Step: 0.5-mV typical hold step at Ch = 0.01 µF.

The LM324 is a versatile quad operational amplifier consisting of four independent, high-gain, internally frequency-compensated op-amps. These op-amps are designed to operate from a single power supply over a wide range of voltages, making them suitable for various applications. They can also operate from split power supplies, and the low power supply current drain is independent of the magnitude of the power supply voltage.

• Output Voltage: Fixed at 3.3V
• Output Current: Capable of supplying 1A
• Low Dropout Voltage: Operates with a dropout voltage as low as 1V
• Line Regulation: 0.2% Max

• High-Speed CMOS Decoder/Demultiplexer
• Single Supply Voltage: Operates between 2V to 6V
• 3-to-8 Line Decoder for Address Expansion
• Low Power Consumption with CMOS Technology