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| UTC NE556 DUAL TIMER DESCRIPTION LINEAR INTEGRATED CIRCUIT The UTC NE556 dual monolithic circuit is a highly stable controller capable of producing accurate delays or oscillation. The UTC NE556 is the dual of UTC NE555; timing is provided an external resistor and capacitor for each function. The two timers operate independently of each other, sharing only Vcc and GND. The circuits may be triggered and reset on falling wave forms. The output structures may sink or source 200mA. SOP-14 FEATURES *High current driver capability(=200mA) *Adjustable duty cycle *Timing from Sec to Hours *Temperature stability of 0.005%/C *TTL compatible *Operates in both Astable and Monostable modes DIP-14 APPLICATIONS *Precision timing. *Pulse generator, shaping. *Time delay generator. *Sequential timing. *Pulse width modulation. *Traffic light control. *Touch tone encoder. *Tone burst generator. BLOCK DIAGRAM UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R106-002,A UTC NE556 PARAMETER Supply Voltage Power Dissipation Lead Temperature(soldering 10 sec.) Operating Temperature Storage Temperature LINEAR INTEGRATED CIRCUIT SYMBOL Vcc Pd Tlead Topr Tstg ABSOLUTE MAXIMUM RATINGS(Ta=25C ) VALUE 16 600 300 -40~85 -65~150 UNIT V mW C C C ELECTRICAL CHARACTERISTICS ( Ta=25C ,Vcc=5 to 15V, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Supply voltage Supply Current(two timers) (low state), (Note 1) Timing Error(monostable) Initial Accuracy(Note 2) Vcc Icc Vcc=5V,RL= Vcc=15V,RL= RA=2K to 100K C=0.1F T=1.1RC MIN 4.5 TYP 5 16 0.75 MAX 16 12 30 UNIT V mA mA % ACCUR Drift with Temperature Drift with Supply Voltage Timing Error(astable) Initial Accuracy(Note 2) t/T t/Vcc ACCUR RA=1K to 100K C=0.1F Vcc=15V 50 0.1 2.25 ppm/C %/V % Drift with Temperature Drift with Supply Voltage Control Voltage Threshold Voltage Threshold Current(Note 3) Trigger Voltage Trigger Current Reset Voltage(Note 4) Reset Current Low Output Voltage t/T t/Vcc Vc VTH ITH Vtr Itr Vrst Irst VOL Vcc=15V Vcc=5V Vcc=15V Vcc=5V Vcc=5V Vcc=15V Vtr=0 9.0 2.6 8.8 2.4 1.1 4.5 0.4 Vcc=15V Isink=10mA Isink=50mA Isink=100mA Isink=200mA 150 0.3 10.0 3.33 10.0 3.33 30 1.6 5 0.01 0.6 0.03 0.1 11.0 4.0 11.2 4.2 250 2.2 5.6 2.0 1.0 0.6 0.25 ppm/C %/V V V V V nA V V A V mA V 0.4 2 2.5 Vcc=5V Isink=5mA Isink=8mA 0.15 0.25 High Output Voltage VOH Vcc=15V Isource=200mA Isource=100mA 0.75 3.2 V V V 0.25 0.35 V V UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R106-002,A UTC NE556 PARAMETER LINEAR INTEGRATED CIRCUIT SYMBOL TEST CONDITIONS MIN 12.75 Vcc=5V Isource=100mA 2.75 3.3 100 100 20 1 V nSec nSec nA % TYP 12.5 13.3 MAX UNIT V V Rise Time of Output Fall Time of Output Discharge Leakage Current Matching Parameter Initial Accuracy(Note 5) tR tF ILKG ACCUR RA, RB=1K to 100K C=0.1F Vcc=15V 300 300 100 2 Drift with Temperature Drift with Supply Voltage t/T t/Vcc 10 0.2 0.5 ppm/C %/V Note 1: Supply current when output is high is typically 1mA less at Vcc 5V. Note 2: Tested at Vcc=5V and Vcc=15V. Note 3: This will determine the maximum value of RA+RB for 15V operation, The maximum total is R=20M, and for 5V operation the maximum total is R=6.6M. Note 4: As reset voltage lower, timing is inhibited and then the output goes low. Note 5: Matching parameters refer to the difference between performance parameters of each timer section in the monostable mode. UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R106-002,A |
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