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MC14490DWG PDF预览

MC14490DWG

更新时间: 2024-11-19 04:41:03
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安森美 - ONSEMI /
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描述
Hex Contact Bounce Eliminator

MC14490DWG 数据手册

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MC14490  
Hex Contact Bounce  
Eliminator  
The MC14490 is constructed with complementary MOS enhancement  
mode devices, and is used for the elimination of extraneous level changes  
that result when interfacing with mechanical contacts. The digital contact  
bounce eliminator circuit takes an input signal from a bouncing contact  
and generates a clean digital signal four clock periods after the input has  
stabilized. The bounce eliminator circuit will remove bounce on both the  
“make” and the “break” of a contact closure. The clock for operation of  
the MC14490 is derived from an internal R−C oscillator which requires  
only an external capacitor to adjust for the desired operating frequency  
(bounce delay). The clock may also be driven from an external clock  
source or the oscillator of another MC14490 (see Figure 5).  
http://onsemi.com  
MARKING  
DIAGRAMS  
16  
PDIP−16  
MC14490P  
NOTE: Immediately after powerup, the outputs of the MC14490 are in  
indeterminate states.  
P SUFFIX  
CASE 648  
AWLYYWWG  
1
Features  
1
Diode Protection on All Inputs  
16  
Six Debouncers Per Package  
Internal Pullups on All Data Inputs  
SOIC−16  
DW SUFFIX  
CASE 751G  
14490  
AWLYYWWG  
Can Be Used as a Digital Integrator, System Synchronizer, or Delay Line  
Internal Oscillator (R−C), or External Clock Source  
TTL Compatible Data Inputs/Outputs  
1
1
Single Line Input, Debounces Both “Make” and “Break” Contacts  
Does Not Require “Form C” (Single Pole Double Throw) Input Signal  
Cascadable for Longer Time Delays  
Schmitt Trigger on Clock Input (Pin 7)  
Supply Voltage Range = 3.0 V to 18 V  
Chip Complexity: 546 FETs or 136.5 Equivalent Gates  
Pb−Free Packages are Available*  
16  
SOEIAJ−16  
MC14490  
ALYWG  
F SUFFIX  
CASE 966  
1
1
A
= Assembly Location  
WL, L = Wafer Lot  
YY, Y = Year  
WW, W = Work Week  
MAXIMUM RATINGS (Voltages Referenced to V  
)
SS  
Parameter  
Symbol  
Value  
Unit  
V
DC Supply Voltage Range  
V
0.5 to +18.0  
G
= Pb−Free Package  
DD  
Input or Output Voltage Range  
(DC or Transient)  
V , V  
in out  
0.5 to V  
+ 0.5  
V
DD  
ORDERING INFORMATION  
Input Current (DC or Transient) per Pin  
Power Dissipation, per Package (Note 1)  
Ambient Temperature Range  
I
10  
mA  
mW  
°C  
in  
See detailed ordering and shipping information in the package  
dimensions section on page 9 of this data sheet.  
P
T
500  
D
55 to +125  
65 to +150  
260  
A
Storage Temperature Range  
T
stg  
°C  
Lead Temperature (8−Second Soldering)  
T
°C  
L
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.  
1. Temperature Derating: Plastic “P and D/DW”  
Packages: – 7.0 mW/_C From 65_C To 125_C  
This device contains protection circuitry to guard against damage due to high  
static voltages or electric fields. However, precautions must be taken to avoid  
applications of any voltage higher than maximum rated voltages to this  
high−impedance circuit. For proper operation, V and V should be constrained  
in  
out  
*For additional information on our Pb−Free strategy  
and soldering details, please download the  
ON Semiconductor Soldering and Mounting  
Techniques Reference Manual, SOLDERRM/D.  
to the range V v (V or V ) v V  
.
SS  
in  
out  
DD  
Unused inputs must always be tied to an appropriate logic voltage level  
(e.g., either V or V ). Unused outputs must be left open.  
SS  
DD  
©
Semiconductor Components Industries, LLC, 2006  
1
Publication Order Number:  
June, 2006 − Rev. 7  
MC14490/D  
 

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