USA555 Datasheet PDF - Unisonic Technologies
| Part Number | USA555 | |
| Description | PRECISION TIMERS | |
| Manufacturers | Unisonic Technologies | |
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UNISONIC TECHNOLOGIES CO., LTD
USA555
LINEAR INTEGRATED CIRCUIT
PRECISION TIMERS
DESCRIPTION
The UTC USA555 monolithic timing circuit is a highly stable
controller capable of producing accurate time delays or
oscillation. In the time-delay or monostable mode of operation,
the timed interval is controlled by a single external resistor and
capacitor network.
In the astable mode of operation, the frequency and duty cycle
can be controlled independently with two external resistors and a
single external capacitor.
The threshold and trigger levels normally are two-thirds and
one-third, respectively, of VCC. These levels can be altered by use
of the control-voltage terminal. When the trigger input falls below
the trigger level, the flip-flop is set, and the output goes high. If
the trigger input is above the trigger level and the threshold input
is above the threshold level, the flip-flop is reset and the output is
low. The reset (RESET) input can override all other inputs and
can be used to initiate a new timing cycle. When RESET goes
low, the flip-flop is reset, and the output goes low. When the
output is low, a low-impedance path is provided between
discharge (DISCH) and ground.
The circuit may be triggered and reset on falling waveforms,
and the output structure can source or sink up to 200mA.
Operation is specified for supplies of 5V~15V.
FEATURES
* Astable or monostable operation
* Low turn off time
* Operates in both astable and monostable modes
* Timing from microseconds to hours
* Adjustable duty cycle
* TTL-compatible output can sink or source up to 200mA
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
- USA555G-S08-R
USA555L-D08-T
USA555G-D08-T
Note: xx: Output Voltage, refer to Marking Information.
Package
SOP-8
DIP-8
SOP-8
DIP-8
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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USA555
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Output Low, VCC=15V
10 15 mA
Supply Current
ICC
No Load
Output High,
VCC=5V
VCC=15V
3 6 mA
9 13 mA
No Load
VCC=5V
2 5 mA
Note: This parameter influences the maximum value of the timing resistors RA and RB in the circuit of Figure 2. For
example, when VCC=5V, the maximum value is R=RA+RB≠3.4MΩ, and for VCC=15V, the maximum value is
10MΩ.
OPERATING CHARACTERISTICS (VCC=5V~15V, TA=25°C, unless otherwise noted)
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 1)
MIN
TYP MAX UNIT
Initial Error of
Timing Interval
(Note 2)
Each Timer, Monostable
(Note 3)
Each Timer, Astable
(Note 4)
TA=25°C
13
2.25
%
%
Temperature
Coefficient of
Timing Interval
Each Timer, Monostable
(Note 3)
Each Timer, Astable
(Note 4)
TA=MIN~MAX
50 ppm/°C
150 ppm/°C
Supply-Voltage
Sensitivity of
Timing Interval
Each Timer, Monostable
(Note 3)
Each Timer, Astable
(Note 4)
TA=25°C
0.1 0.5 %/V
0.3 %/V
Output-Pulse Rise Time
Output-Pulse Fall Time
TR CL=15pF, TA=25°C
TF CL=15pF, TA=25°C
100 300
100 300
ns
ns
Notes: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating
conditions.
2. Timing interval error is defined as the difference between the measured value and the average value of a
random sample from each process run.
3. Values specified are for a device in a monostable circuit similar to Figure 1, with the following component
values: RA=2kΩ~100kΩ, C=0.1µF.
4. Values specified are for a device in an astable circuit similar to Figure 2, with the following component
values: RA=1kΩ~100kΩ, C=0.1µF.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for USA555 electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ USA555.PDF Datasheet ] | |
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