UTC UTCNE556 Datasheet

UTC NE556 LINEAR INTEGRATED CIRCUIT

DUAL TIMER

DESCRIPTION

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.

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

APPLICATIONS

*Precision timing. *Pulse width modulation.
*Pulse generator, shaping. *Traffic light control.
*Time delay generator. *Touch tone encoder.
*Sequential timing. *Tone burst generator.

SOP-14

DIP-14

BLOCK DIAGRAM

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R106-002,A

1

UTC NE556 LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS(Ta=25°C )

Supply Voltage Vcc 16 V
Power Dissipation Pd 600 mW
Lead Temperature(soldering 10
sec.)
Operating Temperature Topr -40~85
Storage Temperature Tstg -65~150

ELECTRICAL CHARACTERISTICS

( Ta=25°C ,Vcc=5 to 15V, unless otherwise specified)

Supply voltage Vcc 4.5 16 V
Supply Current(two timers) Icc
(low state), (Note 1)
Timing Error(monostable)
Initial Accuracy(Note 2) ACCUR

Drift with Temperature
Drift with Supply Voltage
Timing Error(astable)
Initial Accuracy(Note 2) ACCUR

Drift with Temperature
Drift with Supply Voltage
Control Voltage Vc Vcc=15V 9.0 10.0 11.0 V

Threshold Voltage VTH Vcc=15V 8.8 10.0 11.2 V

Threshold Current(Note 3) ITH 30 250 nA
Trigger Voltage Vtr Vcc=5V 1.1 1.6 2.2 V

Trigger Current Itr Vtr=0 0.01 2.0
Reset Voltage(Note 4) Vrst 0.4 0.6 1.0 V
Reset Current Irst 0.03 0.6 mA
Low Output Voltage VOL Vcc=15V

High Output Voltage VOH Vcc=15V

PARAMETER SYMBOL VALUE UNIT

Tlead 300

°C
°C

°C

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Vcc=5V,RL=∝

Vcc=15V,RL=∝

RA=2KΩ to 100KΩ

C=0.1µF

T=1.1RC

∆t/∆T

∆t/∆Vcc

RA=1KΩ to 100KΩ

C=0.1µF

Vcc=15V

∆t/∆T

∆t/∆Vcc

Vcc=5V 2.6 3.33 4.0 V

Vcc=5V 2.4 3.33 4.2 V

Vcc=15V 4.5 5 5.6 V

Isink=10mA

Isink=50mA
Isink=100mA
Isink=200mA

Vcc=5V

Isink=5mA
Isink=8mA

Isource=200mA
Isource=100mA

5 12 mA

16 30 mA

0.75 %

50

0.1 %/V

2.25 %

150

0.3 %/V

0.1 0.25 V

0.4 0.75 V
2 3.2 V

2.5 V

0.15 0.25 V

0.25 0.35 V

ppm/°C

ppm/°C

µA

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R106-002,A

2