MC14490: Hex 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). NOTE: Immediately after power-up, the outputs of the MC14490 are in indeterminate states.
特性- 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
- 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
- Pb-Free Packages are Available
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数据表 (1)
封装图纸 (1)
| Document Title | Document ID/Size | Revision |
|---|
| SO-16 WB | 751G-03 (56.7kB) | D |
产品订购型号
| 产品 | 状况 | Compliance | 封装 | MSL* | 容器 | 预算价格 (1千个数量的单价） |
|---|
| MC14490DWG | Active | Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tube | 47 | $3.4666 |
| MC14490DWR2G | Active | Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tape and Reel | 1000 | $3.4666 |
| NLV14490DWG | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tube | 47 | $3.8132 |
| NLV14490DWR2G | Active | AEC Qualified
PPAP Capable
Pb-free
Halide free | SOIC-16W | 751G-03 | 3 | Tape and Reel | 1000 | $3.8132 |
订购产品技术参数
| Product | Type | VCC Min (V) | VCC Max (V) | tpd Max (ns) | PD Max (W) | IO Max (mA) |
|---|
| MC14490DWG | Bounce Eliminator | 3 | 18 | 320 | 0.5 | 9 |
| MC14490DWR2G | Bounce Eliminator | 3 | 18 | 320 | 0.5 | 9 |
| NLV14490DWG | Bounce Eliminator | 3 | 18 | 320 | 0.5 | 9 |
| NLV14490DWR2G | Bounce Eliminator | 3 | 18 | 320 | 0.5 | 9 |
