LMC555M/TR

LMC555 CMOS general purpose timer The LMC555 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 LMC555 is stable controller capable of producing accurate time delays of frequencies. • • • • • • • • 8 1 ORDERING INFORMATION ILC555N Plastic IZC555 Chip TA = -20° to 70° C for the package Exact equivalent in most cases for SE/NE555. Low Supply Current. High speed operation – 500 kHz guaranteed. Wide operation supply voltage range – 2 to 18 volts. Timing from microseconds through hours. Operates in both astable and monostable modes. Adjustable duty cycle. High output source/sink driver can drive TTL/CMOS http://www.hgsemi.com.cn N SUFFIX PLASTIC PIN ASSIGNMENT 1 GND 01 08 TRIGGER 02 07 DISCHARGE OUTPUT 03 06 THRESHOLD RESET 04 05 LMC555 VCC CONTROL VOLTAGE 2018 JUN LMC555 TRUTH TABLE THRESHOLD TRIGGER RESET OUTPUT DISCHARGE X X L L ON > 2/3⋅VCC > 1/3⋅VCC H L ON < 2/3⋅VCC > 1/3⋅VCC H STABLE STABLE X < 1/3⋅VCC H H OFF MAXIMUM RATINGS AND RECOMMENDED OPERATING CONDITIONS Parameter, unit Symbol Recommended operating conditions Maximum ratings Value Value min max min max 2.0 18.0 0 18.0 IO - 20 - 100 VTH, VTRIG, VRST - - -0.3 VCC+0.3 Power Dissipation, mW PD - - - 200 Operating Temperature,°С TOPR -20 70 -20 85 Storage Temperature, °С TSTG - - -65 150 Lead Temperature, 1 mm from Case for 10 Seconds, °С TSOLDER - - Supply Voltage, V Output Current, mА Input Voltage, V http://www.hgsemi.com.cn VCC 2 260 2018 JUN LMC555 DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) Parameter, units Symbol Test Conditions IOL, IOH Threshold Voltage, V Trigger voltage, V VTH VCC, В 5.0 VTRIG 5.0 2.0 Reset voltage, V VRST Value Temperature, °С min max 0.65 VCC 0.70 VCC 25±10 0.60 VCC 0.80 VCC -20, 70 0.31 VCC 0.36 VCC 25±10 0.28 VCC 0.40 VCC -20, 70 0.4 1.0 25±10 0.2 1.5 -20, 70 0.65 VCC 0.69 VCC 25±10 0.60 VCC 0.80 VCC -20, 70 25±10 18.0 2.0 18.0 Control Voltage Lead, V Output voltage Low, V Output voltage High, V VCV VOL IOL = 3.2 mА 5.0 0.4 IOL = 20 mА 15.0 1.0 IOL = 3.2 mА 5.0 0.6 IOL = 20 mА 15.0 1.5 VOH IOH = -0.8 mА Supply Current, μA http://www.hgsemi.com.cn ICC 3 5.0 4.0 15.0 14.3 5.0 3.5 15.0 14.0 -20, 70 25±10 -20, 70 2.0 200 18.0 300 2.0 400 18.0 600 25±10 -20, 70 2018 JUN LMC555 AC ELECTRICAL CHARACTERISTICS Parameter, unit Symbol Test Conditions Value RL, CL VCC, V Rise (Fall) Time of Output, ns tTHL, tTLH RL = 10 МΩ, CL = 10 pF Guaranteed Max Osc Freq, kHz fMAX Initial accuracy, % Drift with Temperature, %/°С 5.0 Astable Operation 2.018.0 αf RL = 1 - 100 kΩ, CL = 0.1 μF Drift with Supply Voltage, %/В Δf Min Max Temperature, °С 35 75 25±10 70 500 150 -20, 70 25±10 200 5 -20, 70 5.0 0.02 -20, 70 10.0 15.0 5.0 0.03 0.06 3 6 25±10 -20, 70 TRIGGER COMPARATOR A THRESHOLD COMPARATOR B Figura 1. Block Diagram VCC 0.9 TRIGGER GND 0.1 tHL VCC 0.9 0.9 OUTPUT 0.1 0.1 tTLH GND tTHL Figura 2. Switcing Waveforms http://www.hgsemi.com.cn 4 2018 JUN