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MC14490L PDF预览

MC14490L

更新时间: 2024-11-18 22:54:59
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA 逻辑集成电路
页数 文件大小 规格书
9页 268K
描述
Hex Contact Bounce Eliminator

MC14490L 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:DIP包装说明:DIP, DIP16,.3
针数:16Reach Compliance Code:unknown
HTS代码:8542.39.00.01风险等级:5.27
Is Samacsys:N其他特性:CONTACT BOUNCE ELIMINATOR
系列:4000/14000/40000JESD-30 代码:R-GDIP-T16
JESD-609代码:e0长度:19.49 mm
负载电容(CL):50 pF逻辑集成电路类型:LOGIC CIRCUIT
功能数量:6端子数量:16
最高工作温度:125 °C最低工作温度:-55 °C
封装主体材料:CERAMIC, GLASS-SEALED封装代码:DIP
封装等效代码:DIP16,.3封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:5/15 V认证状态:Not Qualified
座面最大高度:5.08 mm子类别:Other Logic ICs
最大供电电压 (Vsup):18 V最小供电电压 (Vsup):3 V
标称供电电压 (Vsup):5 V表面贴装:NO
技术:CMOS温度等级:MILITARY
端子面层:Tin/Lead (Sn/Pb)端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.62 mm
Base Number Matches:1

MC14490L 数据手册

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SEMICONDUCTOR TECHNICAL DATA  
L SUFFIX  
CERAMIC  
CASE 620  
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).  
P SUFFIX  
PLASTIC  
CASE 648  
DW SUFFIX  
SOIC  
CASE 751G  
NOTE: Immediately after power–up, the outputs of the MC14490 are in  
indeterminate states.  
Diode Protection on All Inputs  
Six Debouncers Per Package  
Internal Pullups on All Data Inputs  
Can Be Used as a Digital Integrator, System Synchronizer, or Delay  
Line  
ORDERING INFORMATION  
MC14490P  
MC14490L  
MC14490DW  
Plastic  
Ceramic  
SOIC  
T
= – 55° to 125°C for all packages.  
A
Internal Oscillator (R–C), or External Clock Source  
TTL Compatible Data Inputs/Outputs  
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  
BLOCK DIAGRAM  
+V  
DD  
DATA  
15 A  
out  
1/2–BIT  
DELAY  
A
1
7
4–BIT STATIC SHIFT REGISTER  
in  
SHIFT  
LOAD  
V
V
= PIN 16  
= PIN 8  
OSCILLATOR  
AND  
TWO–PHASE  
CLOCK GENERATOR  
DD  
SS  
φ
1 φ2  
OSC  
φ
φ
1
2
in  
φ
1 φ2  
OSC  
9
out  
φ
1
1
φ
φ
φ
φ
φ
2
B
14  
2
B
IDENTICAL TO ABOVE STAGE  
IDENTICAL TO ABOVE STAGE  
in  
out  
φ
φ
φ
φ
2
C
3
13 C  
in  
out  
1
1
1
2
2
2
D
E
F
12  
5
IDENTICAL TO ABOVE STAGE  
IDENTICAL TO ABOVE STAGE  
IDENTICAL TO ABOVE STAGE  
4
D
in  
in  
in  
out  
out  
out  
11 E  
10  
6
F
REV 3  
1/94  
Motorola, Inc. 1995  

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