http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




  NEC Electronic Components Datasheet  

UPC1555 Datasheet

Timer Circuit

No Preview Available !

UPC1555 pdf
DATA SHEET
MOS INTEGRATED CIRCUIT
Bipolar Analog Integrated Circuit
µPC1555
TIMER CIRCUIT
The µPC1555 is a powerful integrated circuit. Adding a few external parts to it can turn it into various types of
timing signal generators, such as monostable and astable multivibrators. It has trigger, threshold, and control pins.
Inputting a signal to the reset pin can stop the circuit operation easily. In addition, the output can sink current as high
as 200 mA (maximum). So, it can be used to drive relays and lamps.
TYPICAL CHARACTERISTICS
• Supply voltage
: 4.5 to 16 V
• Circuit current (VCC = 5 V) : 3 mA
• Output current capacity : 200 mA
• Temperature stability
: 0.005%/°C
• Rising and falling time : 100 ns
FEATURES
• Monostable and astable oscillation
• Interfacing directly with TTL-level signals
• Variable duty cycle
ORDERING INFORMATION
Part number
Package
µPC1555C 8-pin plastic DIP (300 mil)
µPC1555G2 8-pin plastic SOP (225 mil)
PIN CONFIGURATION (TOP VIEW)
GND 1
8 VCC
Trigger 2 COMP
Flip-flop
Output 3
Output
stage
R 7 Discharge
R
COMP 6 Threshold
R
Reset 4
VREF
5 Control voltage
EQUIVALENT CIRCUIT
8
VCC
R2
1 k
Q6 Q5
Q11
R3
5 k
6
Q1 Q4
Threshold 2 Q2 Q3
5(3VCC)
Control
1
R1
10 k
GND
R4
5 k
Q15 Q16
2
Trigger
Q8 Q9
Q7 Q10
Reset 4
7
Discharge
Q14
Q25
Q12 Q13 R5
5 k
R11
Q22
6.2
k
R6
7.5k
Q21
Q27
R12
3.9
k
Q28
Q17
R7
4.7 k
3
Q24 Output
Q19
Q18
Q20 R10
Q23 120
R8
100
Q26
R9
3.3k
Document No. G10649EJ6V0DS00 (6th edition)
(Previous No. IC-1979)
Date Published November 1995 P
Printed in Japan
©
1986


  NEC Electronic Components Datasheet  

UPC1555 Datasheet

Timer Circuit

No Preview Available !

UPC1555 pdf
µPC1555
ABSOLUTE MAXIMUM RATINGS (TA = 25°C)
Parameter
Supply voltage
Input voltage
(trigger, threshold, reset, control)
Applicable output voltageNote 4
(output and discharge)
Output current
Power dissipation
Operating temperature
Storage temperature
Symbol
VCC
VIN
VO
IO
PT
TA
Tstg
Rated value
µPC1555C
µPC1555G
–0.3 to +18
–0.3 to +18
–0.3 to VCC + 0.3
–0.3 to VCC + 0.3
–0.3 to VCC + 0.3
–0.3 to VCC + 0.3
200Note 1
600Note 2
–20 to +80
–55 to +125
200Note 1
440Note 3
–20 to +80
–55 to +125
Unit
V
V
V
mA
mW
°C
°C
Notes 1. Be sure to use the product within the Power dissipation.
2. For TA 25°C, the total loss is derated at TJ MAX = 125°C and –6 mW/°C.
(See the PT-TA characteristic curve.)
3. For TA 25°C, the total loss is derated at TJ MAX = 125°C and –4.4 mW/°C.
(See the PT-TA characteristic curve.)
4. This is an external voltage that can be applied to the output pin without deteriorating the quality of the
product or causing damage to the product.
Be sure to use the product within the rated value under any conditions where coils are inserted or power
is turned on or off. The output voltage that can be obtained during normal operation is within the output
saturation voltage range.
RECOMMENDED OPERATING CONDITIONS (TA = 25°C)
Parameter
Supply voltage
Oscillation frequency
Output pulse width
Input voltage (trigger, threshold)
Input voltageNote 5 (control)
Reset voltage (high level)
Reset voltage (low level)
Symbol
VCC
f
tW (OUT)
VIN
VIN
Vreset H
Vreset L
Conditions
VCC = 5 to 15 V
VCC = 5 to 15 V
VCC = 5 to 15 V
VCC = 5 to 15 V
MIN.
4.5
0.1
10 µ
0
3.0
1.0
0
MAX.
16
100 k
10
VCC
VCC • 1.5
VCC
0.4
Unit
V
Hz
Sec
V
V
V
V
Note 5.
This parameter defines the voltage that can be applied when a PWM mode application circuit is
configured by applying an external voltage to the control pin. Usually, a capacitance of 0.01 µF is
connected as shown in the application circuit.
2


Part Number UPC1555
Description Timer Circuit
Maker NEC
Total Page 12 Pages
PDF Download
UPC1555 pdf
Download PDF File
UPC1555 pdf
View for Mobile






Related Datasheet

1 UPC1555 Timer Circuit NEC
NEC
UPC1555 pdf




Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components