ST NE556D

555 型，计时器/振荡器（双路）4.5V ~ 16V0°C ~ 70°C14-SOIC（0.154"，3.90mm 宽）表面贴装型

Overview

The NE556D is a dual Precision Timer can be operated in the astable or the monostable mode with external resistor-capacitor (RC) timing control. The basic timing provided by the RC time constant can be controlled actively by modulating the bias of the control-voltage input. The threshold (THRES) and trigger (TRIG) levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by using the control voltage (CONT) terminal. When the trigger input falls below trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset and the output goes low. When the output is low, a low-impedance path is provided between the discharge (DISCH) terminal and ground (GND).

Features

4.5V ~ 16V Voltage - Supply
Operate frequency at 100kHz
Package / Case: Tube
Mounting Type:Surface Mount
Quiescent Current at 30mA

0°C ~ 70°C Operating Temperature

Applications

There are a lot of Texas Instruments
NE556D Programmable Timers & Oscillators applications.

• Intruder Detection
• Tamper Detection
• Home Automation Sensors
• Thermostats
• Consumer Electronics
• Remote Sensors
• White Goods
• Electric Vehicles
• Always On Systems
• Clutch Actuator circuit