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PRECISION TIMERS. USA555 Datasheet

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PRECISION TIMERS. USA555 Datasheet






USA555 TIMERS. Datasheet pdf. Equivalent




USA555 TIMERS. Datasheet pdf. Equivalent





Part

USA555

Description

PRECISION TIMERS



Feature


UNISONIC TECHNOLOGIES CO., LTD USA555 LINEAR INTEGRATED CIRCUIT PRECISION TI MERS  DESCRIPTION The UTC USA555 m onolithic timing circuit is a highly st able controller capable of producing ac curate time delays or oscillation. In t he time-delay or monostable mode of ope ration, the timed interval is controlle d by a single external resistor and cap acitor network. In t.
Manufacture

Unisonic Technologies

Datasheet
Download USA555 Datasheet


Unisonic Technologies USA555

USA555; he astable mode of operation, the freque ncy and duty cycle can be controlled in dependently with two external resistors and a single external capacitor. The t hreshold and trigger levels normally ar e two-thirds and one-third, respectivel y, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, th.


Unisonic Technologies USA555

e 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. Th e reset (RESET) input can override all other inputs and can be used to initiat e a new timing cycle. When RESET goes l ow, the flip-flop is reset, and the out put goes low. When.


Unisonic Technologies USA555

the output is low, a low-impedance path is provided between discharge (DISCH) and ground. The circuit may be triggere d and reset on falling waveforms, and t he output structure can source or sink up to 200mA. Operation is specified for supplies of 5V~15V.  FEATURES * A stable or monostable operation * Low tu rn off time * Operates in both astable and monostable modes.

Part

USA555

Description

PRECISION TIMERS



Feature


UNISONIC TECHNOLOGIES CO., LTD USA555 LINEAR INTEGRATED CIRCUIT PRECISION TI MERS  DESCRIPTION The UTC USA555 m onolithic timing circuit is a highly st able controller capable of producing ac curate time delays or oscillation. In t he time-delay or monostable mode of ope ration, the timed interval is controlle d by a single external resistor and cap acitor network. In t.
Manufacture

Unisonic Technologies

Datasheet
Download USA555 Datasheet




 USA555
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
1 of 8
QW-R106-005.C




 USA555
USA555
MARKING
SOP-8
LINEAR INTEGRATED CIRCUIT
DIP-8
PIN CONFIGURATION
GND 1
TRIG 2
OUT 3
RESET 4
8 VCC
7 DISCH
6 THRES
5 CONT
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
GND
TRIG
OUT
RESET
CONT
THRES
DISCH
VCC
Ground
Trigger signal
Output terminal
Reset terminal
Control voltage
Threshold
Discharge
Power supply
DESCRIPTION
FUNCTION TABLE
RESET
TRIGGER
VOLTAGE (Note)
Low Irrelevant
High
< 1/3 VCC
High
High
> 1/3 VCC
> 1/3 VCC
Note: Voltage levels shown are nominal.
THRESHOLD
VOLTAGE (Note)
Irrelevant
Irrelevant
> 2/3 VCC
< 2/3 VCC
OUTPUT
DISCHARGE
SWITCH
Low On
High
Off
Low On
As previously established
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R106-005.C




 USA555
USA555
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 8
QW-R106-005.C






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