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  ON Semiconductor Electronic Components Datasheet  

MC1455D Datasheet

Timers

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MC1455, MC1455B,
NCV1455B
Timers
The MC1455 monolithic timing circuit is a highly stable controller
capable of producing accurate time delays or oscillation. Additional
terminals are provided for triggering or resetting if desired. In the time
delay mode, time is precisely controlled by one external resistor and
capacitor. For astable operation as an oscillator, the freerunning
frequency and the duty cycle are both accurately controlled with two
external resistors and one capacitor. The circuit may be triggered and
reset on falling waveforms, and the output structure can source or sink
up to 200 mA or drive TTL circuits.
Features
Direct Replacement for NE555 Timers
Timing from Microseconds through Hours
Operates in Both Astable and Monostable Modes
Adjustable Duty Cycle
High Current Output Can Source or Sink 200 mA
Output Can Drive TTL
Temperature Stability of 0.005% per °C
Normally ON or Normally OFF Output
PbFree Packages are Available
10 k
0.1 mF
5
0.01 mF
1.0 k
38
4
6R
2 MC1455 7
1 1.0 mF
MT2
20 M G
C
-10 V
Load
MT1
1N4003
http://onsemi.com
MARKING
DIAGRAMS
8
1
SOIC8
D SUFFIX
CASE 751
8
1455x
ALYW
G
1
8
1
PDIP8
P1 SUFFIX
CASE 626
8
MC1455yyy
AWL
YYWWG
1
x
= B or V
yyy = BP1 or P1
A
= Assembly Location
L
= Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G = PbFree Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
t = 1.1; R and C = 22 sec
Time delay (t) is variable by
changing R and C (see Figure 16).
1N4740
3.5 k
-
10
mF
250 V +
Figure 1. 22 Second Solid State Time Delay Relay Circuit
VCC
8
5k
6
Threshold
5
Control Voltage
5k
Trigger
2
5k
+
Comp
-A
+
Comp
-B
1
GND
Flip
R Flop
Q
S Inhibit/
Reset
4
Reset
7
Discharge
3
Output
+
0.01 mF
VO
VR
ICC
VCC
Reset 4 8
700
5
VCC 7
Control
Voltage
Discharge
MC1455
3
Threshold
Output
ISink
ISource
6
Ith
GND Trigger
12
2.0 k VS
Test circuit for measuring DC parameters (to set output and measure
parameters):
a) When VS w 2/3 VCC, VO is low.
b) When VS v 1/3 VCC, VO is high.
c) When VO is low, Pin 7 sinks current. To test for Reset, set VO
c) high, apply Reset voltage, and test for current flowing into Pin 7.
c) When Reset is not in use, it should be tied to VCC.
Figure 2. Representative Block Diagram
Figure 3. General Test Circuit
© Semiconductor Components Industries, LLC, 2009
1
December, 2009 Rev. 10
Publication Order Number:
MC1455/D


  ON Semiconductor Electronic Components Datasheet  

MC1455D Datasheet

Timers

No Preview Available !

MC1455, MC1455B, NCV1455B
MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.)
Rating
Symbol
Value
Unit
Power Supply Voltage
Discharge Current (Pin 7)
Power Dissipation (Package Limitation)
P1 Suffix, Plastic Package
Derate above TA = +25°C
D Suffix, Plastic Package
Derate above TA = +25°C
Operating Temperature Range (Ambient)
MC1455B
MC1455
NCV1455B
VCC
+18
Vdc
I7
200
mA
PD
625
mW
5.0
mW/°C
PD
625
mW
160
°C/W
TA
°C
40 to +85
0 to +70
40 to +125
Maximum Operating Die Junction Temperature
TJ
+150
°C
Storage Temperature Range
Tstg
65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ELECTRICAL CHARACTERISTICS (TA = +25°C, VCC = +5.0 V to +15 V, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Operating Supply Voltage Range
Supply Current
VCC = 5.0 V, RL = R
VCC = 15 V, RL = R, Low State (Note 1)
VCC
4.5
ICC
3.0
10
Timing Error (R = 1.0 kW to 100 kW) (Note 2)
Initial Accuracy C = 0.1 mF
Drift with Temperature
Drift with Supply Voltage
1.0
50
0.1
Threshold Voltage/Supply Voltage
Trigger Voltage
VCC = 15 V
VCC = 5.0 V
Vth/VCC
VT
2/3
5.0
1.67
Trigger Current
Reset Voltage
Reset Current
Threshold Current (Note 3)
Discharge Leakage Current (Pin 7)
Control Voltage Level
VCC = 15 V
VCC = 5.0 V
IT
VR
IR
Ith
Idischg
VCL
0.5
0.4
0.7
0.1
0.1
9.0
10
2.6
3.33
Output Voltage Low
ISink = 10 mA (VCC = 15 V)
ISink = 50 mA (VCC = 15 V)
ISink = 100 mA (VCC = 15 V)
ISink = 200 mA (VCC = 15 V)
ISink = 8.0 mA (VCC = 5.0 V)
ISink = 5.0 mA (VCC = 5.0 V)
VOL
0.1
0.4
2.0
2.5
0.25
Output Voltage High
VCC = 15 V (ISource = 200 mA)
VCC = 15 V (ISource = 100 mA)
VCC = 5.0 V (ISource = 100 mA)
VOH
12.5
12.75 13.3
2.75
3.3
Rise Time Differential Output
tr
100
Fall Time Differential Output
tf
100
1. ‘Supply current when output is high is typically 1.0 mA less.
2. Tested at VCC = 5.0 V and VCC = 15 V Monostable mode.
3. This will determine the maximum value of RA + RB for 15 V operation. The maximum total R = 20 MW .
4. Tlow = 0°C for MC1455, Tlow = 40°C for MC1455B, NCV1455B
Thigh = +70°C for MC1455, Thigh = +85°C for MC1455B, Thigh = +125°C for NCV1455B
5. NCV prefix is for Automotive and other applications requiring site and change control.
Max
Unit
16
V
mA
6.0
15
%
PPM/°C
%/V
V
mA
1.0
V
mA
0.25
mA
100
nA
V
11
4.0
V
0.25
0.75
2.5
0.35
V
ns
ns
http://onsemi.com
2


Part Number MC1455D
Description Timers
Maker ON Semiconductor
PDF Download

MC1455D Datasheet PDF






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