74HC245 Datasheet – Octal 3-STATE Transceiver – Fairchild

This is transceiver.

Part Number: 74HC245, MM74HC245

Function: Octal 3-STATE Transceiver

Package: DIP 20 Pin Type

Manufacturer: Fairchild Semiconductor

74HC245 datasheet


The 74HC245, 3-STATE bidirectional buffer utilizes advanced silicon-gate CMOS technology, and is intended for two-way asynchronous communication between data buses. It has high drive current outputs which enable high speed operation even when driving large bus capacitances. This circuit possesses the low power consumption and high noise immunity usually associated with CMOS circuitry, yet has speeds comparable to low power Schottky TTL circuits.

Pinout and Truth Table




1. Typical propagation delay : 13 ns
2. Wide power supply range: 2–6V
3. Low quiescent current: 80μA maximum (74 HC)
4. 3-STATE outputs for connection to bus oriented systems

5. High output drive: 6 mA (minimum)



Other data sheets are available within the file: MM74HC245ACW, MM74HC245AMTC, MM74HC245AMTCX, MM74HC245AN

74HC245 Datasheet PDF Download

74HC245 pdf


DMO465R Datasheet – 650V Integrated Power Switch – Fairchild

Part Number: DMO465R, DM0465R

Function: 650V, Integrated Power Switch

Package: TO-220F-6L Type

Manufacturer: Fairchild


DMO465R datasheet



The DMO465R, FSDM0465RE, FSDM0565RE, and FSDM07652RE are an integrated Pulse Width Modulator (PWM) and SenseFET specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

This device is an integrated high-voltage power-switching regulator that combines an avalanche-rugged SenseFET with a current mode PWM control block. The PWM controller includes an integrated fixed-frequency oscillator, under-voltage lockout, leading-edge blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise-current sources for a loop compensation, and self-protection circuitry.

Compared with a discrete MOSFET and PWM controller solution, it can reduce total cost; component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device is a basic platform well suited for cost-effective designs of flyback converters.

DMO465R PDF Datasheet 650V Integrated Power Switch for 48Watt offline flyback converters


1. Internal Avalanche Rugged Sense FET

2. Advanced Burst-Mode Operation Consumes Under 1 Watt at 240VAC&0.5W Load

3. Precision Fixed Operating Frequency (66kHz)

4. Internal Start-up Circuit

5. Improved Pulse-by-Pulse Current Limiting

6. Over Voltage Protection (OVP)

7. Overload Protection (OLP)

8. Internal Thermal Shutdown Function

DMO465R pdf