UTC UTCNE558 Datasheet

UTC NE558 LINEAR INTEGRATED CIRCUIT

UTC UNISONIC TECHNOLOGIES CO., LTD.

1

QW-R106-003,A

QUAD TIMER

DESCRIPTION

The UTC NE558 is a monolithic quad timer which
can be used to produce four entirely independent
timing functions. The highly stable, general purpose
controller can be used in a monostable mode to
produce accurate time delays.

FEATURES

*Wide supply voltage: Vcc= 4.5V~15V
*100mA output current per-section
*Edge trigger without coupling capacitor
*Time period equals RC
*Output independent

DIP-16

SOP-16

APPLICATIONS

*Precision timing
*Quad one-shot
*Timing delay generation
*Sequential timing.

BLOCK DIAGRAM

UTC NE558 LINEAR INTEGRATED CIRCUIT

UTC UNISONIC TECHNOLOGIES CO., LTD.

2

QW-R106-003,A

ABSOLUTE MAXIMUM RATINGS(Ta=25°C )

PARAMETER SYMBOL VALUE UNIT

Supply Voltage Vcc 16 V
Power Dissipation Pd 600 mW
Lead Temperature(soldering 10
sec.)

Tlead 300

°C

Operating Temperature Topr -40~85

°C

Storage Temperature Tstg -65~150

°C

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

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Supply Voltage Vcc 4.5 16 V
Supply Current Icc Vcc=15V,RL=15V 16 36 mA
Timing Error(T=RC)
Initial Accuracy ACCUR

RA=2KΩ to 100KΩ

C=1µF

2 5 %

Drift with Temperature

∆t/∆T

30 150

ppm/°C

Drift with Supply Voltage

∆t/∆Vcc

0.1 0.9 %/V
Threshold Voltage( Note 1) VTH 0.63*Vcc V
Threshold Current ITH 15 Na
Trigger voltage Vtr Vcc=15V 0.8 1.5 2.4 V
Trigger Current Itr Vtr=0 5 100

µA
Reset Voltage(Note 2) Vrst Reset 0.8 1.5 2.4 V
Reset Current Irst Reset 5 100

µA
Output Voltage( Note 3) VOL IL=10mA

IL=100mA

0. 1
1

0. 4
2

V

Rise Time of Output tR IL=100mA 100 nSec
Fall Time of Output tF IL=100mA 100 300 nSec
Discharge Leakage Current ILKG 10 500 nA

Note 1: The trigger functions only on the falling edge of the trigger pulse only after previously being high. After
reset, the trigger must be brought high and then low to implement triggering.
Note 2: For reset below 0.8V, output s set low and trigger inhibited.

Note 3: Output structure is open collector which requires a pull up resistor to Vcc to sink current. The output is
normally low sinking current.