NES56C LINEAR INTEGRATED CIRCUIT DUAL TIMER 14 DIP The NE556 series dual monolithic timing circuits are a highly stable controller capable of producing accurate time delays or oscillation. The NE556 is a dual NE555. Timing is provided an external resistor and capacitor for each timing function. The two timers operate independently of each other, sharing only Vc and ground. The circuits may be triggered and reset on falling waveforms. The output structures may sink or source 200mA. FEATURES Replaces Two NE555 Timers Operates In Both Astable And Monostable Modes * High Output Current TTL Compatible * Timing From Microsecond To Hours * Adjustable Duty Cycle Temperature Stability Of 0.005% Per C APPLICATIONS * Precision Timing * Pulse Shaping * Pulse Width Modulation Frequency Division Traffic Light Control * Sequential Timing * Pulse Generator * Time Delay Generator * Touch Tone Encoder BLOCK DIAGRAM Control Voltage ORDERING INFORMATION Device | Package Operating Temperature @ Comparata: THRESHOLD R Flip Flop FR z R oR Comparator Comparator fo) Tone Burst Generator NE556CN | 14 DIP O~ +70C V Tri Thresh Tri 2) vec rigger reshotd Gay Control Voltage rigger Comparator Flip Fiop Output VV 4 (7) 13 Reset GND 7 Discharge 9 \* Output 0 a Reset & SAMSUNG Electronics 487 NES56C LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta = 25C) Characteristic Symbol Value Unit Supply Voltage Voc 16 Vv Lead Temperature (soldering 10 sec) Tiead 300 C Power Dissipation _ Po 600 mw Operating Temperature Range Topr Q0~+70_ C Storage Temperature Range Tstg ~65 ~ +150 C ELECTRICAL CHARACTERISTICS (Ta=25C, Vec=5 to 15V, unless otherwise specified) Characteristic Symbol Test Conditions Min Typ Max Unit Supply Voltage Vec 4.5 16 Vv *1 Supply Current (Two timers) \ Voc =5V, Ry = co 5 12 mA (low state) ce Voc =15V, Ry, =00 16 30 mA *2 Timing Error (monostable) MT, Ra =2KQ to 100KQ Initial Accuracy C=0.1 pF 0.75 % Drift with Temperature T=1.1Rc 50 ppm/C Drift with Supply Voltage | 0.1 %N Veco = 15V 9.0 10.0 11.0 Vv Control Voitage Ve Voc = 5V 2.6 3.33 4.0 Vv Veo =15V 8.8 10.0 11.2 Vv Threshold Voltage Vou oe Voc =5V 24 | 333 | 42 v *3 Threshold Current ly 30 250 nA Veco =15V 45 5.0 5.6 Vv Trigger Voltage Vir Voc =5V 1.1 1.6 2.2 Vv Trigger Current irr V;=0V 0.01 2.0 vA | *5 Reset Voltage Vae 0.4 0.6 1.0 v Reset Current Ire 0.03 0.6 mA Voc =15V fsink = 10MA 0.1 0.25 Vv leink =50MA 0.4 0.75 Vv \sink =100mA 2.0 3.2 Vv Output Voltage Low Vo. lene = 200MA 25 Vv Veco = 5V leink = 8MA | 0.25 | 0.35 Vv leink =5MA | 0.15 0.25 Vv & SANISUNG 0 Electronics NE556C LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Ta=25C, Vec=5 to 15V, unless otherwise specified) | Characteristic Symbol Test Conditions Min Typ Max Unit Vec =15V . lsource = 200MA 12.5 Vv Output Voltage (high) Vox leource =100MA [12.75 | 13.3 Vv Veo =5V lsqurce = TOOMA 3.3 Vv Rise Time of Output T, 100 300 nsec DL, 1. na} . ee. , Fall Time of Output | Tr a _ 100 300 nsec Discharge Leakage Current lb 10 100 nA | *4 Matching Characteristics Initial Accuracy Mcu 1.0 2.0 % Drift with Temperature 10 ppm/c Drift with Supply Voltage 0.2 0.5 %IV" ' *2 Timing Error (astable) | Ra, Re =1k0 to 100k2 ) Initial Accuracy ; MT. C=0.1pF 2.25 % Drift with Temperature 2 Veo =15V 150 ppm/c Drift with Supply Voltage 0.3 WIV Notes: 1. Supply current when output is high is typically 1.0mA less at Vcc =5V. *2. Tested at Voc =SV and Veo =16V *3. This will determine the maximum value of Ra +Re for 15V operation. The maximum total R=20MQ, and for 5V operation the maximum total R=6.6MQ. *4, Matching characteristics refer to the difference between performance characteristics of each timer section in the monostable mode. *5. As reset voltage lowers, timing is inhibited and then the output goes low. & SANISUNG Electronics 489