NE555N

CMOS GENERAL PURPOSE TIMER NE555 FEATURES         Exact equivalent in most cases for SE/NE555 Low Supply Current High speed operation – 500KHz guaranteed Wide operation supply voltage range - 2V to 18V Timing from microseconds through hours Operates in both astable and monostable modes Adjustable duty cycle High output source/sink driver can drive TTL/CMOS SOP-8 DIP-8 APPLICATION        Precision timing Pulse generation Sequential timing Time delay generation Pulse width modulation Pulse position modulation Missing Pulse detector ORDERING INFORMATION Device Package NE555D SOP-8 NE555N DIP-8 DESCRIPTION The NE555 is CMOS RC timers providing significantly improved performance over the standard SE/NE555 and 355 timers, while at the same time being direct replacements for those devices in most applications. Improved parameters include low supply current, wide operating supply voltage range, low THRESHOLD, TRIGGER and RESET currents, no crowbarring of the supply current during output transitions, higher frequency performance and no requirement to decouple CONTROL VOLTAGE for stable operation. Specifically, the NE555 is stable controller capable of producing accurate time delays of frequencies. ABSOLUTE MAXIMUM RATINGS (Note 1) CHARACTERISTIC SYMBOL MIN. MAX. UNIT Supply Voltage VCC 0 18 V Output Current IO - 100 mA VTH, VTRIG, VRST -0.3 VCC+0.3 V Storage Temperature Range TSTG -65 150 °C Operating Junction Temperature Range TOPR -20 85 °C SYMBOL MIN. MAX. UNIT Supply Voltage VCC 2 18 V Operating Junction Temperature Range TOPR -20 70 °C Input Voltage RECOMMENDED OPERATING RATINGS (Note 2) CHARACTERISTIC Jul. 2019_R1.0 1 /7 HTC CMOS GENERAL PURPOSE TIMER NE555 ORDERING INFORMATION Order No. Package Description Supplied As Status NE555D SOP-8 General Purpose Timer Reel Active NE555N DIP-8 General Purpose Timer Tube Active NE 555 Package Type D : SOP-8 N : DIP-8 Root Name Product Code Jul. 2019_R1.0 2 /7 HTC CMOS GENERAL PURPOSE TIMER NE555 PIN CONFIGURATION SOP-8 DIP-8 (Top View) (Top View) 1 8 1 8 2 7 2 7 3 6 3 6 4 5 4 5 PIN DESCRIPTION Pin No. Name Function 1 GND Supply ground 2 TRIGGER Start timer input; (Active LOW) 3 OUTPUT Timer logic level output 4 RESET Timer inhibit input; (Active LOW) 5 CONTROL VOLTAGE Timing capacitor upper voltage sense input 6 THRESHOLD Timing capacitor lower voltage sense input 7 DISCHARGE Timing capacitor discharge output 8 VCC Supply voltage Jul. 2019_R1.0 3 /7 HTC CMOS GENERAL PURPOSE TIMER NE555 FUNCTIONAL DIAGRAM VCC RESET TRIGGER R COMPARATOR A THRESHOLD OUTPUT + CONTROL VOLTAGE - DISCHARGE R + TRIGGER COMPARATOR B R SWITCHING WAVEFORMS VCC 0.9 TRIGGER 0.1 GND tHL VCC 0.9 0.9 OUTPUT 0.1 0.1 tTLH GND tTHL TRUTH TABLE THRESHOLD TRIGGER RESET OUTPUT DISCHARGE X X L L ON > 2/3VCC > 1/3VCC H L ON < 2/3VCC > 1/3VCC H STABLE STABLE X < 1/3VCC H H OFF Jul. 2019_R1.0 4 /7 HTC CMOS GENERAL PURPOSE TIMER NE555 ELECTRICAL CHARACTERISTICS (Note 3) Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range. VCC=5V, unless otherwise specified. PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT DC ELECTRICAL CHARACTERISTICS Threshold Voltage Trigger Voltage VRST Control Voltage VCV Output Voltage (High) Supply Current 3.2 3.5 VCC = 15V 9.6 10.5 VCC = 5V 1.55 1.8 VCC = 15V 4.6 5.4 VCC = 2V, 15V, 18V 0.4 1.0 VCC = 5V 3.2 3.5 VCC = 15V 9.6 10.5 V V VTRIG Reset Voltage Output Voltage (Low) VCC = 5V VTH VOL VOH V V VCC = 5V, IOL = 3.2mA 0.4 VCC = 15V, IOL = 20mA 1.0 VCC = 15V, IOL = 50mA 2.0 VCC = 5V, IOH = −0.8mA 4.0 VCC = 15V, IOH = −0.8mA 14.3 VCC = 15V, IOH = −10mA 12.5 V V VCC = 2V 200 VCC = 18V 300 µA ICC AC ELECTRICAL CHARACTERISTICS 35 Rise/ Fall Time of Output tTHL, tTLH ns VCC = 5V, RL = 10MΩ, CL = 10pF 150 Guaranteed Max Osc Freq. fMAX Initial Accuracy Drift with Temperature VCC = 5V, astable mode RL = 1 to 100KΩ, CL = 0.1µF αf 500 kHz 5 % VCC = 5V, RL = 1 to 100KΩ, CL = 0.1µF 0.02 VCC = 10V, RL = 1 to 100KΩ, CL = 0.1µF 0.03 VCC = 15V, RL = 1 to 100KΩ, CL = 0.1µF 0.06 %/°C 3 Drift with Supply Voltage △f %/V VCC = 5V, RL = 1 to 100KΩ, CL = 0.1µF 6 Note 1. Exceeding the absolute maximum ratings may damage the device. Note 2. The device is not guaranteed to function outside its operating ratings. Note 3. Stresses listed as the absolute maximum ratings may cause permanent damage to the device. These are for stress ratings. Functional operating of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibly to affect device reliability. Note 4. Parameters are not 100% tested. Majority of all units meet this specification. Jul. 2019_R1.0 5 /7 HTC CMOS GENERAL PURPOSE TIMER NE555 APPLICATION INFORMATION T.B.D. Jul. 2019_R1.0 6 /7 HTC CMOS GENERAL PURPOSE TIMER NE555 REVISION NOTICE The description in this datasheet is subject to change without notice to describe its electrical characteristics properly. Jul. 2019_R1.0 7 /7 HTC