The 558 Quad Timers are monolithic timing devices which can be used to produce four independent timing functions. The 558 output sinks current. These highly stable, general purpose controllers can be used in a monostable mode to produce accurate time delays; from microseconds to hours. In the time delay mode of operation, the time is precisely controlled by one external resistor and one capacitor. A stable operation can be achieved by using two of the four timer sections.
D1, N Packages
OUTPUT A
1
TIMING A
2
TRIGGER A
3
CONTROL VOLTAGE
4
OUTPUT STAGE
OUTPUT STAGE ff
ff 15
VR
The four timer sections in the 558 are edge-triggered; therefore, when connected in tandem for sequential timing applications, no coupling capacitors are required. Output current capability of 100mA is provided in both devices.
VCC
FEATURES
• 100mA output current per section • Edge-triggered (no coupling capacitor) • Output independent of trigger conditions • Wide supply voltage range 4.5V to 16V • Timer intervals from microseconds to hours • Time period equals RC • Military qualifications pending
TRIGGER B
14
TRIGGER D
VR
13
RESET
12
GROUND
R1
R2
COMP
COMP
7
8
11
TRIGGER C
10
TIMING C
VR ff
OUTPUT
TIMING D
COMP
5
6
OUTPUT D
VR COMP
VR OUTPUT
16
ff
OUTPUT STAGE
OUTPUT STAGE
9
OUTPUT C
TOP VIEW NOTE: 1. SOL released in large SO package only.
APPLICATIONS
• Sequential timing • Time delay generation • Precision timing • Industrial controls • Quad one-shot ORDERING INFORMATION TEMPERATURE RANGE
ORDER CODE
16-Pin Plastic Small Outline Large (SOL) Package
DESCRIPTION
0 to +70°C
NE558D
DWG # 0171B
16-Pin Plastic Dual In-Line Package (DIP)
0 to +70°C
NE558N
0406C
ABSOLUTE MAXIMUM RATINGS SYMBOL
PARAMETER
VCC
Supply voltage
PD
Maximum power dissipation TA=25°C ambient (still-air)1 N package D package
TA
Operating ambient temperature range
TSTG
Storage temperature range
TSOLD
Lead soldering temperature (10sec max)
RATING
UNIT
+16
V
1450
mW
1090
mW
0 to +70
°C
-65 to +150
°C
+300
°C
NOTES: 1. Derate above 25°C, at the following rates: N package at 11.6mW/°C D package at 8.7mW/°C
August 31, 1994
378
853-0150 13721
Philips Semiconductors Linear Products
Product specification
Quad timer
NE558
DC AND AC ELECTRICAL CHARACTERISTICS TA = 25°C, VCC = +5V to +15V, unless otherwise specified. SYMBOL
PARAMETER
TEST CONDITIONS
VCC
Supply voltage
ICC
Supply current
VCC=Reset=15V
Timing accuracy (t=RC)
R=2kΩ to 100kΩ,
NE558 Min
Typ
4.5 16
Max
UNIT
16
V
36
mA
C=1µF tA
Initial accuracy
±2
5
%
∆tA/∆T
Drift with temperature
30
150
ppm/°C
∆tA/∆VS
Drift with supply voltage
0.1
0.9
%/V
VTRIG
Trigger voltage1
VCC=15V
ITRIG
Trigger current
Trigger=0V
VRESET
Reset voltage2
IRESET
Reset current
VTH
Threshold voltage
0.63
Threshold leakage
15
VOUT
0.8
2.4
V
5
100
µA
2.4
V
50
500
µA
0.8 Reset
Output voltage3
×VCC nA
IL=10mA
0.1
IL=100mA
1.0
2.0
V
10
500
nA
Output leakage
0.4
V
tPD
Propagation delay
1.0
µs
tR
Rise time of output
IL=100mA
100
ns
tF
Fall time of output
IL=100mA
100
ns
NOTES: 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. 2. For reset below 0.8V, outputs set low and trigger inhibited. For reset above 2.4V, trigger enabled. 3. The 558 output structure is open-collector which requires a pull-up resistor to VCC to sink current. The output is normally low sinking current.
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