UTC LM556 LINEAR INTEGRATED CIRCUIT DUAL TIMER DESCRIPTION The UTC LM556 dual monolithic circuit is a highly stable controller capable of producing accurate delays or oscillation. The UTC LM556 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 µSec 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-R106-004,A UTC LM556 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Ta=25°C ) PARAMETER SYMBOL Supply Voltage Power Dissipation Lead Temperature(soldering 10 sec.) Operating Temperature Storage Temperature VALUE UNIT Vcc Pd Tlead 16 600 300 V mW °C Topr Tstg -40~85 -65~150 °C °C ELECTRICAL CHARACTERISTICS ( Ta=25°C ,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) TYP MAX UNIT Vcc=5V,RL=∝ Vcc=15V,RL=∝ 5 16 16 12 30 V mA mA RA=2KΩ to 100KΩ C=0.1µF T=1.1RC 0.75 % 50 0.1 ppm/°C %/V 2.25 % 150 0.3 10.0 3.33 10.0 3.33 30 1.6 5 0.01 0.6 0.03 0.1 ppm/°C %/V V V V V nA V V µA V mA V Vcc Icc ACCUR Drift with Temperature Drift with Supply Voltage Timing Error(astable) Initial Accuracy(Note 2) ∆t/∆T ∆t/∆Vcc Drift with Temperature Drift with Supply Voltage Control Voltage ∆t/∆T ∆t/∆Vcc Vc ACCUR Threshold Voltage VTH Threshold Current(Note 3) Trigger Voltage ITH Vtr Trigger Current Reset Voltage(Note 4) Reset Current Low Output Voltage Itr Vrst Irst VOL MIN 4.5 RA=1KΩ to 100KΩ C=0.1µF Vcc=15V Vcc=15V Vcc=5V Vcc=15V Vcc=5V 9.0 2.6 8.8 2.4 Vcc=5V Vcc=15V Vtr=0 1.1 4.5 0.4 Vcc=15V 11.0 4.0 11.2 4.2 250 2.2 5.6 2.0 1.0 0.6 0.25 Isink=10mA Isink=50mA Isink=100mA Isink=200mA 0.4 2 2.5 0.75 3.2 V V V 0.15 0.25 0.25 0.35 V V Vcc=5V Isink=5mA Isink=8mA UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R106-004,A UTC LM556 PARAMETER High Output Voltage LINEAR INTEGRATED CIRCUIT SYMBOL VOH TEST CONDITIONS MIN TYP 12.75 12.5 13.3 MAX UNIT Vcc=15V Isource=200mA Isource=100mA V V Vcc=5V Isource=100mA 2.75 Rise Time of Output Fall Time of Output Discharge Leakage Current Matching Parameter Initial Accuracy(Note 5) Drift with Temperature Drift with Supply Voltage tR tF ILKG ACCUR ∆t/∆T ∆t/∆Vcc RA, RB=1KΩ to 100KΩ C=0.1µF Vcc=15V 3.3 100 100 20 300 300 100 V nSec nSec nA 1 2 % 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=20MΩ, and for 5V operation the maximum total is R=6.6MΩ. 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-R106-004,A