MC3456P ON Semiconductor, MC3456P Datasheet

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MC3456P

Manufacturer Part Number
MC3456P
Description
Manufacturer
ON Semiconductor
Datasheet

Specifications of MC3456P

Lead Free Status / Rohs Status
Not Compliant

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MC3456
Dual Timing Circuit
of producing accurate time delays, or oscillation. Additional terminals
are provided for triggering or resetting if desired. In the time delay
mode of operation, the time is precisely controlled by one external
resistor and capacitor per timer. For astable operation as an oscillator,
the free running frequency and the duty cycle are both accurately
controlled with two external resistors and one capacitor per timer. The
circuit may be triggered and reset on falling waveforms, and the output
structure can source or sink up to 200 mA or drive MTTL circuits.
© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 4
t = 1.1; R and C = 22 sec
Time delay (t) is variable by
changing R and C (see Figure 16).
The MC3456 dual timing circuit is a highly stable controller capable
Direct Replacement for NE556/SE556 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 MTTL
Temperature Stability of 0.005% per °C
Normally “On” or Normally “Off” Output
Dual Version of the Popular MC1455 Timer
Figure 1. 22 Second Solid State Time Delay Relay Circuit
0.1 μF
10 k
0.01 μF
5
4
2
3
MC3456
1/2
8
1
1.0 k
1.0 μF
6
7
R
1N4740
20 M
C
−10 V
MT2
G
3.5 k
250 V
MT1
10 μF
+
Load
1N4003
1
MC3456P
NE556D
Device
Discharge A
Threshold A
DUAL TIMING CIRCUIT
Control A
Trigger A
Output A
Reset A
ORDERING INFORMATION
SEMICONDUCTOR
TECHNICAL DATA
Gnd
PIN CONNECTIONS
Temperature Range
http://onsemi.com
1
2
3
4
5
6
7
0° to +70°C
Operating
(Top View)
PLASTIC PACKAGE
Publication Order Number:
PLASTIC PACKAGE
CASE 751A
D SUFFIX
(SO−14)
CASE 646
P SUFFIX
14
13
12
10
11
9
8
V
Discharge B
Threshold B
Control B
Reset B
Output B
Trigger B
CC
Plastic DIP
Package
SO−14
MC3456/D

Related parts for MC3456P

MC3456P Summary of contents

Page 1

... PLASTIC PACKAGE CASE 751A (SO−14) PIN CONNECTIONS Discharge Threshold A Discharge Control A Threshold Reset A Control Output A Reset Trigger A Output Gnd Trigger (Top View) ORDERING INFORMATION Operating Device Temperature Range Package MC3456P Plastic DIP 0° to +70°C SO−14 NE556D Publication Order Number: MC3456/D ...

Page 2

(12) Threshold + Comp Flip 3 (11 − Flop Control Voltage 5 k Inhibit Comp Reset 6 (8) B Trigger − (10) Gnd Reset Figure 2. ...

Page 3

ELECTRICAL CHARACTERISTICS (T Characteristics Supply Voltage Supply Current ∞ ∞ Low State, (Note Timing Error (Note 2) Monostable Mode (R = 2.0 kΩ; ...

Page 4

V , MINIMUM TRIGGER VOLTAGE ( (min) Figure 4. Trigger Pulse Width 2.0 1.8 1.6 25°C 1.4 1.2 1.0 0.8 0.6 0.4 5.0 V ≤ V ...

Page 5

V , SUPPLY VOLTAGE (Vdc) CC Figure 10. Delay Time versus Supply Voltage 300 250 200 150 100 1.015 1.010 1.005 1.000 0.995 0.990 0.985 15 ...

Page 6

Threshold Comparator V CC 4.7 k Threshold 10 k Trigger Reset Reset Discharge Discharge Gnd Figure 13. 1/2 Representative Circuit Schematic The MC3456 is a dual timing circuit which uses as its timing elements an external resistor/capacitor network. It can ...

Page 7

TIME DELAY (s) d Figure 14. Time Delay μs/ kΩ 0.01 μ ...

Page 8

Astable Mode In the astable mode the timer is connected so that it will retrigger itself and cause the capacitor voltage to oscillate between 1/3 V and 2/3 V (see Figure 17 The external capacitor charges to 2/3 ...

Page 9

Tone Burst Generator For a tone burst generator, the first timer is used as a monostable and determines the tone duration when triggered by a positive pulse at Pin 6. The second timer is enabled by the high output of ...

Page 10

Pulse Width Modulation If the timer is triggered with a continuous pulse train in the monostable mode of operation, the charge time of the capacitor can be varied by changing the control voltage at Pin 3. In this manner, the ...

Page 11

−T− SEATING PLANE 0.13 (0.005) PACKAGE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 646−06 ISSUE http://onsemi.com 11 NOTES: 1. DIMENSIONING AND ...

Page 12

... JAPAN: ON Semiconductor, Japan Customer Focus Center 4−32−1 Nishi−Gotanda, Shinagawa−ku, Tokyo, Japan 141−0031 Phone: 81−3−5740−2700 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 12 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14 ...

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