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MC12028A from MOT,Motorola

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MC12028A

Manufacturer: MOT, MOTOROLA, MOTO

MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER

Partnumber Manufacturer Quantity Availability
MC12028A MOT, MOTOROLA, MOTO 1720 In Stock

Description and Introduction

MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER The MC12028A is a Motorola (MOTO) integrated circuit (IC) designed for high-speed digital applications. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Manufacturer:**  
Motorola (MOTO)  

### **Part Number:**  
MC12028A  

### **Description:**  
The MC12028A is a high-speed prescaler IC, primarily used in frequency division applications. It is part of Motorola’s high-performance logic family, designed for use in RF and digital systems requiring fast switching and low power consumption.  

### **Key Features:**  
- **Frequency Range:** Operates at high frequencies (exact range not specified in Ic-phoenix technical data files).  
- **Division Ratio:** Programmable or fixed division ratio (specific ratio not detailed).  
- **Logic Family:** Compatible with ECL (Emitter-Coupled Logic) for high-speed operation.  
- **Supply Voltage:** Typically operates with a negative supply voltage (e.g., -5.2V, common for ECL devices).  
- **Low Power Consumption:** Optimized for efficient power usage in high-speed applications.  
- **Package Type:** Likely available in a standard IC package (e.g., DIP, SOIC).  
- **Applications:** Used in frequency synthesizers, phase-locked loops (PLLs), and other RF/digital systems.  

### **Additional Notes:**  
- The MC12028A is an older Motorola part, and datasheets may be limited.  
- For exact electrical characteristics, refer to official Motorola documentation.  

This information is based solely on the available knowledge base. For detailed specifications, consult the original datasheet or manufacturer resources.

Application Scenarios & Design Considerations

MECL PLL COMPONENTS ?4/65, ?28/129 DUAL MODULUS PRESCALER

Alternative Part Number

  • SN74LS628N --: Voltage-controlled oscillator in a similar function class, widely available and pin-compatible in many designs.
  • CD4046BE --: Classic PLL/VCO IC that can replace the oscillator function with minor external component changes.
  • NE566N --: Function generator/VCO IC offering comparable oscillation capability for legacy designs.
  • MC12028AP --: Same MC12028A prescaler family in a DIP package; pin-compatible with the original through-hole version and widely available as a direct drop-in.
  • MC12028AD --: SOIC-packaged variant of the same MC12028A prescaler; electrically equivalent and suitable when a surface-mount footprint is acceptable.
  • MC12028L --: Alternative package option of the same MC12028A divider; same function and specifications, useful when the original package is unavailable.

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